Merging upstream version 1.15.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

13 files changed, 695 insertions, 913 deletions

diff --git a/daemon/Makefile.am b/daemon/Makefile.am
index 9611f223..e020e517 100644
--- a/daemon/Makefile.am
+++ b/daemon/Makefile.am
@@ -17,4 +17,5 @@ dist_noinst_DATA = \
 
 dist_plugins_SCRIPTS = \
 	anonymous-statistics.sh \
+	system-info.sh \
 	$(NULL)
diff --git a/daemon/Makefile.in b/daemon/Makefile.in
deleted file mode 100644
index 7bec7f3f..00000000
--- a/daemon/Makefile.in
+++ /dev/null
@@ -1,571 +0,0 @@
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-install-pdf-am:
-
-install-ps: install-ps-am
-
-install-ps-am:
-
-installcheck-am:
-
-maintainer-clean: maintainer-clean-am
-	-rm -f Makefile
-maintainer-clean-am: distclean-am maintainer-clean-generic
-
-mostlyclean: mostlyclean-am
-
-mostlyclean-am: mostlyclean-generic
-
-pdf: pdf-am
-
-pdf-am:
-
-ps: ps-am
-
-ps-am:
-
-uninstall-am: uninstall-dist_pluginsSCRIPTS
-
-.MAKE: install-am install-strip
-
-.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
-	ctags-am distclean distclean-generic distdir dvi dvi-am html \
-	html-am info info-am install install-am install-data \
-	install-data-am install-dist_pluginsSCRIPTS install-dvi \
-	install-dvi-am install-exec install-exec-am install-html \
-	install-html-am install-info install-info-am install-man \
-	install-pdf install-pdf-am install-ps install-ps-am \
-	install-strip installcheck installcheck-am installdirs \
-	maintainer-clean maintainer-clean-generic mostlyclean \
-	mostlyclean-generic pdf pdf-am ps ps-am tags-am uninstall \
-	uninstall-am uninstall-dist_pluginsSCRIPTS
-
-.in:
-	if sed \
-		-e 's#[@]localstatedir_POST@#$(localstatedir)#g' \
-		-e 's#[@]sbindir_POST@#$(sbindir)#g' \
-		-e 's#[@]configdir_POST@#$(configdir)#g' \
-		-e 's#[@]libconfigdir_POST@#$(libconfigdir)#g' \
-		-e 's#[@]cachedir_POST@#$(cachedir)#g' \
-		-e 's#[@]registrydir_POST@#$(registrydir)#g' \
-		-e 's#[@]varlibdir_POST@#$(varlibdir)#g' \
-		$< > $@.tmp; then \
-		mv "$@.tmp" "$@"; \
-	else \
-		rm -f "$@.tmp"; \
-		false; \
-	fi
-
-# Tell versions [3.59,3.63) of GNU make to not export all variables.
-# Otherwise a system limit (for SysV at least) may be exceeded.
-.NOEXPORT:
diff --git a/daemon/README.md b/daemon/README.md
index 858394c7..62cc8c3b 100644
--- a/daemon/README.md
+++ b/daemon/README.md
@@ -164,6 +164,8 @@ The command line options of the netdata 1.10.0 version are the following:
 
   -W unittest              Run internal unittests and exit.
 
+  -W createdataset=N       Create a DB engine dataset of N seconds and exit.
+
   -W set section option value
                            set netdata.conf option from the command line.
 
diff --git a/daemon/anonymous-statistics.sh b/daemon/anonymous-statistics.sh
deleted file mode 100644
index daedc47b..00000000
--- a/daemon/anonymous-statistics.sh
+++ /dev/null
@@ -1,198 +0,0 @@
-#!/usr/bin/env sh
-
-# Valid actions:
-
-# - FATAL       - netdata exited due to a fatal condition
-#      ACTION_RESULT  -- program name and thread tag
-#      ACTION_DATA    -- fmt, args passed to fatal
-# - START       - netdata started
-#      ACTION_DATA     -- nan
-# - EXIT     - installation action
-#      ACTION_DATA    -- ret value of
-
-ACTION="${1}"
-ACTION_RESULT="${2}"
-ACTION_DATA="${3}"
-ACTION_DATA=$(echo "${ACTION_DATA}" | tr '"' "'")
-
-# -------------------------------------------------------------------------------------------------
-# check opt-out
-
-if [ -f "/etc/netdata/.opt-out-from-anonymous-statistics" ]; then
-	exit 0
-fi
-
-# -------------------------------------------------------------------------------------------------
-# detect the operating system
-
-OS_DETECTION="unknown"
-NAME="unknown"
-VERSION="unknown"
-VERSION_ID="unknown"
-ID="unknown"
-ID_LIKE="unknown"
-
-if [ -f "/etc/os-release" ]; then
-	OS_DETECTION="/etc/os-release"
-	eval "$(grep -E "^(NAME|ID|ID_LIKE|VERSION|VERSION_ID)=" </etc/os-release)"
-fi
-
-if [ "${NAME}" = "unknown" ] || [ "${VERSION}" = "unknown" ] || [ "${ID}" = "unknown" ]; then
-	if [ -f "/etc/lsb-release" ]; then
-		if [ "${OS_DETECTION}" = "unknown" ]; then OS_DETECTION="/etc/lsb-release"; else OS_DETECTION="Mixed"; fi
-		DISTRIB_ID="unknown"
-		DISTRIB_RELEASE="unknown"
-		DISTRIB_CODENAME="unknown"
-		eval "$(grep -E "^(DISTRIB_ID|DISTRIB_RELEASE|DISTRIB_CODENAME)=" </etc/lsb-release)"
-		if [ "${NAME}" = "unknown" ]; then NAME="${DISTRIB_ID}"; fi
-		if [ "${VERSION}" = "unknown" ]; then VERSION="${DISTRIB_RELEASE}"; fi
-		if [ "${ID}" = "unknown" ]; then ID="${DISTRIB_CODENAME}"; fi
-	elif [ -n "$(command -v lsb_release 2>/dev/null)" ]; then
-		if [ "${OS_DETECTION}" = "unknown" ]; then OS_DETECTION="lsb_release"; else OS_DETECTION="Mixed"; fi
-		if [ "${NAME}" = "unknown" ]; then NAME="$(lsb_release -is 2>/dev/null)"; fi
-		if [ "${VERSION}" = "unknown" ]; then VERSION="$(lsb_release -rs 2>/dev/null)"; fi
-		if [ "${ID}" = "unknown" ]; then ID="$(lsb_release -cs 2>/dev/null)"; fi
-	fi
-fi
-
-# -------------------------------------------------------------------------------------------------
-# detect the kernel
-
-KERNEL_NAME="$(uname -s)"
-KERNEL_VERSION="$(uname -r)"
-ARCHITECTURE="$(uname -m)"
-
-# -------------------------------------------------------------------------------------------------
-# detect the virtualization
-
-VIRTUALIZATION="unknown"
-VIRT_DETECTION="none"
-CONTAINER="unknown"
-CONT_DETECTION="none"
-
-if [ -n "$(command -v systemd-detect-virt 2>/dev/null)" ]; then
-	VIRTUALIZATION="$(systemd-detect-virt -v)"
-	VIRT_DETECTION="systemd-detect-virt"
-	CONTAINER="$(systemd-detect-virt -c)"
-	CONT_DETECTION="systemd-detect-virt"
-else
-	if grep -q "^flags.*hypervisor" /proc/cpuinfo 2>/dev/null; then
-		VIRTUALIZATION="hypervisor"
-		VIRT_DETECTION="/proc/cpuinfo"
-	fi
-fi
-
-# -------------------------------------------------------------------------------------------------
-# detect containers with heuristics
-
-if [ "${CONTAINER}" = "unknown" ]; then
-	if [ -f /proc/1/sched ] ; then
-		IFS='(, ' read -r process _ </proc/1/sched
-		if [ "${process}" = "netdata" ]; then
-			CONTAINER="container"
-			CONT_DETECTION="process"
-		fi
-	fi
-	# ubuntu and debian supply /bin/running-in-container
-	# https://www.apt-browse.org/browse/ubuntu/trusty/main/i386/upstart/1.12.1-0ubuntu4/file/bin/running-in-container
-	if /bin/running-in-container >/dev/null 2>&1; then
-		CONTAINER="container"
-		CONT_DETECTION="/bin/running-in-container"
-	fi
-
-	# lxc sets environment variable 'container'
-	#shellcheck disable=SC2154
-	if [ -n "${container}" ]; then
-		CONTAINER="lxc"
-		CONT_DETECTION="containerenv"
-	fi
-
-	# docker creates /.dockerenv
-	# http://stackoverflow.com/a/25518345
-	if [ -f "/.dockerenv" ]; then
-		CONTAINER="docker"
-		CONT_DETECTION="dockerenv"
-	fi
-fi
-
-# -------------------------------------------------------------------------------------------------
-# check netdata version
-
-if [ -z "${NETDATA_VERSION}" ]; then
-	NETDATA_VERSION="uknown"
-	netdata -V >/dev/null 2>&1 && NETDATA_VERSION="$(netdata -V 2>&1 | cut -d ' ' -f 2)"
-fi
-
-# -------------------------------------------------------------------------------------------------
-# check netdata unique id
-if [ -z "${NETDATA_REGISTRY_UNIQUE_ID}" ] ; then
-	if [ -f "/var/lib/netdata/registry/netdata.public.unique.id" ]; then
-		NETDATA_REGISTRY_UNIQUE_ID="$(cat "/var/lib/netdata/registry/netdata.public.unique.id")"
-	else
-		NETDATA_REGISTRY_UNIQUE_ID="unknown"
-	fi
-fi
-
-
-# -------------------------------------------------------------------------------------------------
-# send the anonymous statistics to GA
-# https://developers.google.com/analytics/devguides/collection/protocol/v1/parameters
-if [ -n "$(command -v curl 2>/dev/null)" ]; then
-	curl -X POST -Ss --max-time 2 \
-		--data "v=1" \
-		--data "tid=UA-64295674-3" \
-		--data "aip=1" \
-		--data "ds=shell" \
-		--data-urlencode "cid=${NETDATA_REGISTRY_UNIQUE_ID}" \
-		--data-urlencode "cs=${NETDATA_REGISTRY_UNIQUE_ID}" \
-		--data "t=event" \
-		--data "ni=1" \
-		--data "an=anonymous-statistics" \
-		--data-urlencode "av=${NETDATA_VERSION}" \
-		--data-urlencode "ec=${ACTION}" \
-		--data-urlencode "ea=${ACTION_RESULT}" \
-		--data-urlencode "el=${ACTION_DATA}" \
-		--data-urlencode "cd1=${NAME}" \
-		--data-urlencode "cd2=${ID}" \
-		--data-urlencode "cd3=${ID_LIKE}" \
-		--data-urlencode "cd4=${VERSION}" \
-		--data-urlencode "cd5=${VERSION_ID}" \
-		--data-urlencode "cd6=${OS_DETECTION}" \
-		--data-urlencode "cd7=${KERNEL_NAME}" \
-		--data-urlencode "cd8=${KERNEL_VERSION}" \
-		--data-urlencode "cd9=${ARCHITECTURE}" \
-		--data-urlencode "cd10=${VIRTUALIZATION}" \
-		--data-urlencode "cd11=${VIRT_DETECTION}" \
-		--data-urlencode "cd12=${CONTAINER}" \
-		--data-urlencode "cd13=${CONT_DETECTION}" \
-		"https://www.google-analytics.com/collect" >/dev/null 2>&1
-else
-	wget -q -O - --timeout=1 "https://www.google-analytics.com/collect?\
-&v=1\
-&tid=UA-64295674-3\
-&aip=1\
-&ds=shell\
-&cid=${NETDATA_REGISTRY_UNIQUE_ID}\
-&cs=${NETDATA_REGISTRY_UNIQUE_ID}\
-&t=event\
-&ni=1\
-&an=anonymous-statistics\
-&av=${NETDATA_VERSION}\
-&ec=${ACTION}\
-&ea=${ACTION_RESULT}\
-&el=${ACTION_DATA}\
-&cd1=${NAME}\
-&cd2=${ID}\
-&cd3=${ID_LIKE}\
-&cd4=${VERSION}\
-&cd5=${VERSION_ID}\
-&cd6=${OS_DETECTION}\
-&cd7=${KERNEL_NAME}\
-&cd8=${KERNEL_VERSION}\
-&cd9=${ARCHITECTURE}\
-&cd10=${VIRTUALIZATION}\
-&cd11=${VIRT_DETECTION}\
-&cd12=${CONTAINER}\
-&cd13=${CONT_DETECTION}\
-" > /dev/null 2>&1
-fi
diff --git a/daemon/anonymous-statistics.sh.in b/daemon/anonymous-statistics.sh.in
index d4622c6d..9f548ce9 100755
--- a/daemon/anonymous-statistics.sh.in
+++ b/daemon/anonymous-statistics.sh.in
@@ -22,117 +22,23 @@ if [ -f "@configdir_POST@/.opt-out-from-anonymous-statistics" ]; then
 	exit 0
 fi
 
-# -------------------------------------------------------------------------------------------------
-# detect the operating system
-
-OS_DETECTION="unknown"
-NAME="unknown"
-VERSION="unknown"
-VERSION_ID="unknown"
-ID="unknown"
-ID_LIKE="unknown"
-
-if [ -f "/etc/os-release" ]; then
-	OS_DETECTION="/etc/os-release"
-	eval "$(grep -E "^(NAME|ID|ID_LIKE|VERSION|VERSION_ID)=" </etc/os-release)"
-fi
-
-if [ "${NAME}" = "unknown" ] || [ "${VERSION}" = "unknown" ] || [ "${ID}" = "unknown" ]; then
-	if [ -f "/etc/lsb-release" ]; then
-		if [ "${OS_DETECTION}" = "unknown" ]; then OS_DETECTION="/etc/lsb-release"; else OS_DETECTION="Mixed"; fi
-		DISTRIB_ID="unknown"
-		DISTRIB_RELEASE="unknown"
-		DISTRIB_CODENAME="unknown"
-		eval "$(grep -E "^(DISTRIB_ID|DISTRIB_RELEASE|DISTRIB_CODENAME)=" </etc/lsb-release)"
-		if [ "${NAME}" = "unknown" ]; then NAME="${DISTRIB_ID}"; fi
-		if [ "${VERSION}" = "unknown" ]; then VERSION="${DISTRIB_RELEASE}"; fi
-		if [ "${ID}" = "unknown" ]; then ID="${DISTRIB_CODENAME}"; fi
-	elif [ -n "$(command -v lsb_release 2>/dev/null)" ]; then
-		if [ "${OS_DETECTION}" = "unknown" ]; then OS_DETECTION="lsb_release"; else OS_DETECTION="Mixed"; fi
-		if [ "${NAME}" = "unknown" ]; then NAME="$(lsb_release -is 2>/dev/null)"; fi
-		if [ "${VERSION}" = "unknown" ]; then VERSION="$(lsb_release -rs 2>/dev/null)"; fi
-		if [ "${ID}" = "unknown" ]; then ID="$(lsb_release -cs 2>/dev/null)"; fi
-	fi
-fi
-
-# -------------------------------------------------------------------------------------------------
-# detect the kernel
-
-KERNEL_NAME="$(uname -s)"
-KERNEL_VERSION="$(uname -r)"
-ARCHITECTURE="$(uname -m)"
-
-# -------------------------------------------------------------------------------------------------
-# detect the virtualization
-
-VIRTUALIZATION="unknown"
-VIRT_DETECTION="none"
-CONTAINER="unknown"
-CONT_DETECTION="none"
-
-if [ -n "$(command -v systemd-detect-virt 2>/dev/null)" ]; then
-	VIRTUALIZATION="$(systemd-detect-virt -v)"
-	VIRT_DETECTION="systemd-detect-virt"
-	CONTAINER="$(systemd-detect-virt -c)"
-	CONT_DETECTION="systemd-detect-virt"
-else
-	if grep -q "^flags.*hypervisor" /proc/cpuinfo 2>/dev/null; then
-		VIRTUALIZATION="hypervisor"
-		VIRT_DETECTION="/proc/cpuinfo"
-	fi
-fi
-
-# -------------------------------------------------------------------------------------------------
-# detect containers with heuristics
-
-if [ "${CONTAINER}" = "unknown" ]; then
-	if [ -f /proc/1/sched ] ; then
-		IFS='(, ' read -r process _ </proc/1/sched
-		if [ "${process}" = "netdata" ]; then
-			CONTAINER="container"
-			CONT_DETECTION="process"
-		fi
-	fi
-	# ubuntu and debian supply /bin/running-in-container
-	# https://www.apt-browse.org/browse/ubuntu/trusty/main/i386/upstart/1.12.1-0ubuntu4/file/bin/running-in-container
-	if /bin/running-in-container >/dev/null 2>&1; then
-		CONTAINER="container"
-		CONT_DETECTION="/bin/running-in-container"
-	fi
-
-	# lxc sets environment variable 'container'
-	#shellcheck disable=SC2154
-	if [ -n "${container}" ]; then
-		CONTAINER="lxc"
-		CONT_DETECTION="containerenv"
-	fi
-
-	# docker creates /.dockerenv
-	# http://stackoverflow.com/a/25518345
-	if [ -f "/.dockerenv" ]; then
-		CONTAINER="docker"
-		CONT_DETECTION="dockerenv"
-	fi
-fi
-
-# -------------------------------------------------------------------------------------------------
-# check netdata version
-
-if [ -z "${NETDATA_VERSION}" ]; then
-	NETDATA_VERSION="uknown"
-	netdata -V >/dev/null 2>&1 && NETDATA_VERSION="$(netdata -V 2>&1 | cut -d ' ' -f 2)"
-fi
-
-# -------------------------------------------------------------------------------------------------
-# check netdata unique id
-if [ -z "${NETDATA_REGISTRY_UNIQUE_ID}" ] ; then
-	if [ -f "@registrydir_POST@/netdata.public.unique.id" ]; then
-		NETDATA_REGISTRY_UNIQUE_ID="$(cat "@registrydir_POST@/netdata.public.unique.id")"
-	else
-		NETDATA_REGISTRY_UNIQUE_ID="unknown"
-	fi
-fi
-
+echo "&av=${NETDATA_VERSION}\
+&ec=${ACTION}\
+&ea=${ACTION_RESULT}\
+&el=${ACTION_DATA}\
+&cd1=${NETDATA_SYSTEM_OS_NAME}\
+&cd2=${NETDATA_SYSTEM_OS_ID}\
+&cd3=${NETDATA_SYSTEM_OS_ID_LIKE}\
+&cd4=${NETDATA_SYSTEM_OS_VERSION}\
+&cd5=${NETDATA_SYSTEM_OS_VERSION_ID}\
+&cd6=${NETDATA_SYSTEM_OS_DETECTION}\
+&cd7=${NETDATA_SYSTEM_KERNEL_NAME}\
+&cd8=${NETDATA_SYSTEM_KERNEL_VERSION}\
+&cd9=${NETDATA_SYSTEM_ARCHITECTURE}\
+&cd10=${NETDATA_SYSTEM_VIRTUALIZATION}\
+&cd11=${NETDATA_SYSTEM_VIRT_DETECTION}\
+&cd12=${NETDATA_SYSTEM_CONTAINER}\
+&cd13=${NETDATA_SYSTEM_CONTAINER_DETECTION}" >> /tmp/as.log
 
 # -------------------------------------------------------------------------------------------------
 # send the anonymous statistics to GA
@@ -152,19 +58,19 @@ if [ -n "$(command -v curl 2>/dev/null)" ]; then
 		--data-urlencode "ec=${ACTION}" \
 		--data-urlencode "ea=${ACTION_RESULT}" \
 		--data-urlencode "el=${ACTION_DATA}" \
-		--data-urlencode "cd1=${NAME}" \
-		--data-urlencode "cd2=${ID}" \
-		--data-urlencode "cd3=${ID_LIKE}" \
-		--data-urlencode "cd4=${VERSION}" \
-		--data-urlencode "cd5=${VERSION_ID}" \
-		--data-urlencode "cd6=${OS_DETECTION}" \
-		--data-urlencode "cd7=${KERNEL_NAME}" \
-		--data-urlencode "cd8=${KERNEL_VERSION}" \
-		--data-urlencode "cd9=${ARCHITECTURE}" \
-		--data-urlencode "cd10=${VIRTUALIZATION}" \
-		--data-urlencode "cd11=${VIRT_DETECTION}" \
-		--data-urlencode "cd12=${CONTAINER}" \
-		--data-urlencode "cd13=${CONT_DETECTION}" \
+		--data-urlencode "cd1=${NETDATA_SYSTEM_OS_NAME}" \
+		--data-urlencode "cd2=${NETDATA_SYSTEM_OS_ID}" \
+		--data-urlencode "cd3=${NETDATA_SYSTEM_OS_ID_LIKE}" \
+		--data-urlencode "cd4=${NETDATA_SYSTEM_OS_VERSION}" \
+		--data-urlencode "cd5=${NETDATA_SYSTEM_OS_DETECTION}" \
+		--data-urlencode "cd6=${NETDATA_SYSTEM_OS_DETECTION}" \
+		--data-urlencode "cd7=${NETDATA_SYSTEM_KERNEL_NAME}" \
+		--data-urlencode "cd8=${NETDATA_SYSTEM_KERNEL_VERSION}" \
+		--data-urlencode "cd9=${NETDATA_SYSTEM_ARCHITECTURE}" \
+		--data-urlencode "cd10=${NETDATA_SYSTEM_VIRTUALIZATION}" \
+		--data-urlencode "cd11=${NETDATA_SYSTEM_VIRT_DETECTION}" \
+		--data-urlencode "cd12=${NETDATA_SYSTEM_CONTAINER}" \
+		--data-urlencode "cd13=${NETDATA_SYSTEM_CONTAINER_DETECTION}" \
 		"https://www.google-analytics.com/collect" >/dev/null 2>&1
 else
 	wget -q -O - --timeout=1 "https://www.google-analytics.com/collect?\
@@ -181,18 +87,18 @@ else
 &ec=${ACTION}\
 &ea=${ACTION_RESULT}\
 &el=${ACTION_DATA}\
-&cd1=${NAME}\
-&cd2=${ID}\
-&cd3=${ID_LIKE}\
-&cd4=${VERSION}\
-&cd5=${VERSION_ID}\
-&cd6=${OS_DETECTION}\
-&cd7=${KERNEL_NAME}\
-&cd8=${KERNEL_VERSION}\
-&cd9=${ARCHITECTURE}\
-&cd10=${VIRTUALIZATION}\
-&cd11=${VIRT_DETECTION}\
-&cd12=${CONTAINER}\
-&cd13=${CONT_DETECTION}\
+&cd1=${NETDATA_SYSTEM_OS_NAME}\
+&cd2=${NETDATA_SYSTEM_OS_ID}\
+&cd3=${NETDATA_SYSTEM_OS_ID_LIKE}\
+&cd4=${NETDATA_SYSTEM_OS_VERSION}\
+&cd5=${NETDATA_SYSTEM_OS_VERSION_ID}\
+&cd6=${NETDATA_SYSTEM_OS_DETECTION}\
+&cd7=${NETDATA_SYSTEM_KERNEL_NAME}\
+&cd8=${NETDATA_SYSTEM_KERNEL_VERSION}\
+&cd9=${NETDATA_SYSTEM_ARCHITECTURE}\
+&cd10=${NETDATA_SYSTEM_VIRTUALIZATION}\
+&cd11=${NETDATA_SYSTEM_VIRT_DETECTION}\
+&cd12=${NETDATA_SYSTEM_CONTAINER}\
+&cd13=${NETDATA_SYSTEM_CONTAINER_DETECTION}\
 " > /dev/null 2>&1
 fi
diff --git a/daemon/common.h b/daemon/common.h
index d688d282..9a55fa3a 100644
--- a/daemon/common.h
+++ b/daemon/common.h
@@ -79,4 +79,6 @@ extern char *netdata_configured_host_prefix;
 extern char *netdata_configured_timezone;
 extern int netdata_anonymous_statistics_enabled;
 
+int netdata_ready;
+
 #endif /* NETDATA_COMMON_H */
diff --git a/daemon/config/README.md b/daemon/config/README.md
index 44bca2b2..0508a19d 100644
--- a/daemon/config/README.md
+++ b/daemon/config/README.md
@@ -57,7 +57,7 @@ cache directory | `/var/cache/netdata` | The directory the memory database will
 lib directory | `/var/lib/netdata` | Contains the alarm log and the netdata instance guid.
 home directory | `/var/cache/netdata` | Contains the db files for the collected metrics
 plugins directory | `"/usr/libexec/netdata/plugins.d" "/etc/netdata/custom-plugins.d"` | The directory plugin programs are kept. This setting supports multiple directories, space separated. If any directory path contains spaces, enclose it in single or double quotes.
-memory mode | `save` | When set to `save` netdata will save its round robin database on exit and load it on startup. When set to `map` the cache files will be updated in real time (check `man mmap` - do not set this on systems with heavy load or slow disks - the disks will continuously sync the in-memory database of netdata). When set to `ram` the round robin database will be temporary and it will be lost when netdata exits. `none` disables the database at this host. This also disables health monitoring (there cannot be health monitoring without a database). host access prefix | | This is used in docker environments where /proc, /sys, etc have to be accessed via another path. You may also have to set SYS_PTRACE capability on the docker for this work. Check [issue 43](https://github.com/netdata/netdata/issues/43).
+memory mode | `save` | When set to `save` netdata will save its round robin database on exit and load it on startup. When set to `map` the cache files will be updated in real time (check `man mmap` - do not set this on systems with heavy load or slow disks - the disks will continuously sync the in-memory database of netdata). When set to `dbengine` it behaves similarly to `map` but with much better disk and memory efficiency, however, with higher overhead. When set to `ram` the round robin database will be temporary and it will be lost when netdata exits. `none` disables the database at this host. This also disables health monitoring (there cannot be health monitoring without a database). host access prefix | | This is used in docker environments where /proc, /sys, etc have to be accessed via another path. You may also have to set SYS_PTRACE capability on the docker for this work. Check [issue 43](https://github.com/netdata/netdata/issues/43).
 memory deduplication (ksm) | `yes` | When set to `yes`, netdata will offer its in-memory round robin database to kernel same page merging (KSM) for deduplication. For more information check [Memory Deduplication - Kernel Same Page Merging - KSM](../../database/#ksm)
 TZ environment variable | `:/etc/localtime` | Where to find the timezone
 timezone | auto-detected | The timezone retrieved from the environment variable
diff --git a/daemon/daemon.h b/daemon/daemon.h
index b65d2daa..5d176341 100644
--- a/daemon/daemon.h
+++ b/daemon/daemon.h
@@ -12,4 +12,5 @@ extern void send_statistics(const char *action, const char *action_result, const
 
 extern char pidfile[];
 
+
 #endif /* NETDATA_DAEMON_H */
diff --git a/daemon/global_statistics.c b/daemon/global_statistics.c
index 9933d0df..9cc05abb 100644
--- a/daemon/global_statistics.c
+++ b/daemon/global_statistics.c
@@ -530,4 +530,223 @@ void global_statistics_charts(void) {
 
         rrdset_done(st_rrdr_points);
     }
+
+    // ----------------------------------------------------------------
+
+#ifdef ENABLE_DBENGINE
+    if (localhost->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE) {
+        unsigned long long stats_array[27];
+
+        /* get localhost's DB engine's statistics */
+        rrdeng_get_27_statistics(localhost->rrdeng_ctx, stats_array);
+
+        // ----------------------------------------------------------------
+
+        {
+            static RRDSET *st_compression = NULL;
+            static RRDDIM *rd_savings = NULL;
+
+            if (unlikely(!st_compression)) {
+                st_compression = rrdset_create_localhost(
+                        "netdata"
+                        , "dbengine_compression_ratio"
+                        , NULL
+                        , "dbengine"
+                        , NULL
+                        , "NetData DB engine data extents' compression savings ratio"
+                        , "percentage"
+                        , "netdata"
+                        , "stats"
+                        , 130502
+                        , localhost->rrd_update_every
+                        , RRDSET_TYPE_LINE
+                );
+
+                rd_savings = rrddim_add(st_compression, "savings", NULL, 1, 1000, RRD_ALGORITHM_ABSOLUTE);
+            }
+            else
+                rrdset_next(st_compression);
+
+            unsigned long long ratio;
+            unsigned long long compressed_content_size = stats_array[12];
+            unsigned long long content_size = stats_array[11];
+
+            if (content_size) {
+                // allow negative savings
+                ratio = ((content_size - compressed_content_size) * 100 * 1000) / content_size;
+            } else {
+                ratio = 0;
+            }
+            rrddim_set_by_pointer(st_compression, rd_savings, ratio);
+
+            rrdset_done(st_compression);
+        }
+
+        // ----------------------------------------------------------------
+
+        {
+            static RRDSET *st_pg_cache_hit_ratio = NULL;
+            static RRDDIM *rd_hit_ratio = NULL;
+
+            if (unlikely(!st_pg_cache_hit_ratio)) {
+                st_pg_cache_hit_ratio = rrdset_create_localhost(
+                        "netdata"
+                        , "page_cache_hit_ratio"
+                        , NULL
+                        , "dbengine"
+                        , NULL
+                        , "NetData DB engine page cache hit ratio"
+                        , "percentage"
+                        , "netdata"
+                        , "stats"
+                        , 130503
+                        , localhost->rrd_update_every
+                        , RRDSET_TYPE_LINE
+                );
+
+                rd_hit_ratio = rrddim_add(st_pg_cache_hit_ratio, "ratio", NULL, 1, 1000, RRD_ALGORITHM_ABSOLUTE);
+            }
+            else
+                rrdset_next(st_pg_cache_hit_ratio);
+
+            static unsigned long long old_hits = 0;
+            static unsigned long long old_misses = 0;
+            unsigned long long hits = stats_array[7];
+            unsigned long long misses = stats_array[8];
+            unsigned long long hits_delta;
+            unsigned long long misses_delta;
+            unsigned long long ratio;
+
+            hits_delta = hits - old_hits;
+            misses_delta = misses - old_misses;
+            old_hits = hits;
+            old_misses = misses;
+
+            if (hits_delta + misses_delta) {
+                // allow negative savings
+                ratio = (hits_delta * 100 * 1000) / (hits_delta + misses_delta);
+            } else {
+                ratio = 0;
+            }
+            rrddim_set_by_pointer(st_pg_cache_hit_ratio, rd_hit_ratio, ratio);
+
+            rrdset_done(st_pg_cache_hit_ratio);
+        }
+
+        // ----------------------------------------------------------------
+
+        {
+            static RRDSET *st_pg_cache_pages = NULL;
+            static RRDDIM *rd_populated = NULL;
+            static RRDDIM *rd_commited = NULL;
+            static RRDDIM *rd_insertions = NULL;
+            static RRDDIM *rd_deletions = NULL;
+            static RRDDIM *rd_backfills = NULL;
+            static RRDDIM *rd_evictions = NULL;
+
+            if (unlikely(!st_pg_cache_pages)) {
+                st_pg_cache_pages = rrdset_create_localhost(
+                        "netdata"
+                        , "page_cache_stats"
+                        , NULL
+                        , "dbengine"
+                        , NULL
+                        , "NetData DB engine page statistics"
+                        , "pages"
+                        , "netdata"
+                        , "stats"
+                        , 130504
+                        , localhost->rrd_update_every
+                        , RRDSET_TYPE_LINE
+                );
+
+                rd_populated = rrddim_add(st_pg_cache_pages, "populated", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+                rd_commited = rrddim_add(st_pg_cache_pages, "commited", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+                rd_insertions = rrddim_add(st_pg_cache_pages, "insertions", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+                rd_deletions = rrddim_add(st_pg_cache_pages, "deletions", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+                rd_backfills = rrddim_add(st_pg_cache_pages, "backfills", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+                rd_evictions = rrddim_add(st_pg_cache_pages, "evictions", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+            }
+            else
+                rrdset_next(st_pg_cache_pages);
+
+            rrddim_set_by_pointer(st_pg_cache_pages, rd_populated, (collected_number)stats_array[3]);
+            rrddim_set_by_pointer(st_pg_cache_pages, rd_commited, (collected_number)stats_array[4]);
+            rrddim_set_by_pointer(st_pg_cache_pages, rd_insertions, (collected_number)stats_array[5]);
+            rrddim_set_by_pointer(st_pg_cache_pages, rd_deletions, (collected_number)stats_array[6]);
+            rrddim_set_by_pointer(st_pg_cache_pages, rd_backfills, (collected_number)stats_array[9]);
+            rrddim_set_by_pointer(st_pg_cache_pages, rd_evictions, (collected_number)stats_array[10]);
+            rrdset_done(st_pg_cache_pages);
+        }
+
+        // ----------------------------------------------------------------
+
+        {
+            static RRDSET *st_io_stats = NULL;
+            static RRDDIM *rd_reads = NULL;
+            static RRDDIM *rd_writes = NULL;
+
+            if (unlikely(!st_io_stats)) {
+                st_io_stats = rrdset_create_localhost(
+                "netdata"
+                , "dbengine_io_throughput"
+                , NULL
+                , "dbengine"
+                , NULL
+                , "NetData DB engine I/O throughput"
+                , "MiB/s"
+                , "netdata"
+                , "stats"
+                , 130505
+                , localhost->rrd_update_every
+                , RRDSET_TYPE_LINE
+                );
+
+                rd_reads = rrddim_add(st_io_stats, "reads", NULL, 1, 1024 * 1024, RRD_ALGORITHM_INCREMENTAL);
+                rd_writes = rrddim_add(st_io_stats, "writes", NULL, -1, 1024 * 1024, RRD_ALGORITHM_INCREMENTAL);
+            }
+            else
+                rrdset_next(st_io_stats);
+
+            rrddim_set_by_pointer(st_io_stats, rd_reads, (collected_number)stats_array[17]);
+            rrddim_set_by_pointer(st_io_stats, rd_writes, (collected_number)stats_array[15]);
+            rrdset_done(st_io_stats);
+        }
+
+        // ----------------------------------------------------------------
+
+        {
+            static RRDSET *st_io_stats = NULL;
+            static RRDDIM *rd_reads = NULL;
+            static RRDDIM *rd_writes = NULL;
+
+            if (unlikely(!st_io_stats)) {
+                st_io_stats = rrdset_create_localhost(
+                        "netdata"
+                        , "dbengine_io_operations"
+                        , NULL
+                        , "dbengine"
+                        , NULL
+                        , "NetData DB engine I/O operations"
+                        , "operations/s"
+                        , "netdata"
+                        , "stats"
+                        , 130506
+                        , localhost->rrd_update_every
+                        , RRDSET_TYPE_LINE
+                );
+
+                rd_reads = rrddim_add(st_io_stats, "reads", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+                rd_writes = rrddim_add(st_io_stats, "writes", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+            }
+            else
+                rrdset_next(st_io_stats);
+
+            rrddim_set_by_pointer(st_io_stats, rd_reads, (collected_number)stats_array[18]);
+            rrddim_set_by_pointer(st_io_stats, rd_writes, (collected_number)stats_array[16]);
+            rrdset_done(st_io_stats);
+        }
+    }
+#endif
+
 }
diff --git a/daemon/main.c b/daemon/main.c
index ba8d4b4e..a1577fb9 100644
--- a/daemon/main.c
+++ b/daemon/main.c
@@ -301,6 +301,7 @@ int help(int exitcode) {
             "  -W stacksize=N           Set the stacksize (in bytes).\n\n"
             "  -W debug_flags=N         Set runtime tracing to debug.log.\n\n"
             "  -W unittest              Run internal unittests and exit.\n\n"
+            "  -W createdataset=N       Create a DB engine dataset of N seconds and exit.\n\n"
             "  -W set section option value\n"
             "                           set netdata.conf option from the command line.\n\n"
             "  -W simple-pattern pattern string\n"
@@ -471,6 +472,25 @@ static void get_netdata_configured_variables() {
 
     default_rrd_memory_mode = rrd_memory_mode_id(config_get(CONFIG_SECTION_GLOBAL, "memory mode", rrd_memory_mode_name(default_rrd_memory_mode)));
 
+#ifdef ENABLE_DBENGINE
+    // ------------------------------------------------------------------------
+    // get default Database Engine page cache size in MiB
+
+    default_rrdeng_page_cache_mb = (int) config_get_number(CONFIG_SECTION_GLOBAL, "page cache size", default_rrdeng_page_cache_mb);
+    if(default_rrdeng_page_cache_mb < RRDENG_MIN_PAGE_CACHE_SIZE_MB) {
+        error("Invalid page cache size %d given. Defaulting to %d.", default_rrdeng_page_cache_mb, RRDENG_MIN_PAGE_CACHE_SIZE_MB);
+        default_rrdeng_page_cache_mb = RRDENG_MIN_PAGE_CACHE_SIZE_MB;
+    }
+
+    // ------------------------------------------------------------------------
+    // get default Database Engine disk space quota in MiB
+
+    default_rrdeng_disk_quota_mb = (int) config_get_number(CONFIG_SECTION_GLOBAL, "dbengine disk space", default_rrdeng_disk_quota_mb);
+    if(default_rrdeng_disk_quota_mb < RRDENG_MIN_DISK_SPACE_MB) {
+        error("Invalid dbengine disk space %d given. Defaulting to %d.", default_rrdeng_disk_quota_mb, RRDENG_MIN_DISK_SPACE_MB);
+        default_rrdeng_disk_quota_mb = RRDENG_MIN_DISK_SPACE_MB;
+    }
+#endif
     // ------------------------------------------------------------------------
 
     netdata_configured_host_prefix = config_get(CONFIG_SECTION_GLOBAL, "host access prefix", "");
@@ -650,6 +670,51 @@ static int load_netdata_conf(char *filename, char overwrite_used) {
     return ret;
 }
 
+int get_system_info(struct rrdhost_system_info *system_info) {
+    char *script;
+    script = mallocz(sizeof(char) * (strlen(netdata_configured_primary_plugins_dir) + strlen("system-info.sh") + 2));
+    sprintf(script, "%s/%s", netdata_configured_primary_plugins_dir, "system-info.sh");
+    if (unlikely(access(script, R_OK) != 0)) {
+        info("System info script %s not found.",script);
+        freez(script);
+        return 1;
+    }
+
+    pid_t command_pid;
+
+    info("Executing %s", script);
+
+    FILE *fp = mypopen(script, &command_pid);
+    if(fp) {
+        char buffer[200 + 1];
+        while (fgets(buffer, 200, fp) != NULL) {
+            char *name=buffer;
+            char *value=buffer;
+            while (*value && *value != '=') value++;
+            if (*value=='=') {
+                *value='\0';
+                value++;
+                if (strlen(value)>1) {
+                    char *newline = value + strlen(value) - 1;
+                    (*newline) = '\0';
+                }
+                char n[51], v[101];
+                snprintfz(n, 50,"%s",name);
+                snprintfz(v, 101,"%s",value);
+                if(unlikely(rrdhost_set_system_info_variable(system_info, n, v))) {
+                    info("Unexpected environment variable %s=%s", n, v);
+                }
+                else {
+                    info("%s=%s", n, v);
+                    setenv(n, v, 1);
+                }
+            }
+        }
+        mypclose(fp, command_pid);
+    }
+    freez(script);
+    return 0;
+}
 
 void send_statistics( const char *action, const char *action_result, const char *action_data) {
     static char *as_script;
@@ -697,6 +762,7 @@ int main(int argc, char **argv) {
     int dont_fork = 0;
     size_t default_stacksize;
 
+    netdata_ready=0;
     // set the name for logging
     program_name = "netdata";
 
@@ -795,6 +861,7 @@ int main(int argc, char **argv) {
                     {
                         char* stacksize_string = "stacksize=";
                         char* debug_flags_string = "debug_flags=";
+                        char* createdataset_string = "createdataset=";
 
                         if(strcmp(optarg, "unittest") == 0) {
                             if(unit_test_buffer()) return 1;
@@ -803,13 +870,27 @@ int main(int argc, char **argv) {
                             default_rrd_update_every = 1;
                             default_rrd_memory_mode = RRD_MEMORY_MODE_RAM;
                             default_health_enabled = 0;
-                            rrd_init("unittest");
+                            rrd_init("unittest", NULL);
                             default_rrdpush_enabled = 0;
                             if(run_all_mockup_tests()) return 1;
                             if(unit_test_storage()) return 1;
+#ifdef ENABLE_DBENGINE
+                            if(test_dbengine()) return 1;
+#endif
                             fprintf(stderr, "\n\nALL TESTS PASSED\n\n");
                             return 0;
                         }
+                        else if(strncmp(optarg, createdataset_string, strlen(createdataset_string)) == 0) {
+                            unsigned history_seconds;
+
+                            optarg += strlen(createdataset_string);
+                            history_seconds = (unsigned )strtoull(optarg, NULL, 0);
+
+#ifdef ENABLE_DBENGINE
+                            generate_dbengine_dataset(history_seconds);
+#endif
+                            return 0;
+                        }
                         else if(strcmp(optarg, "simple-pattern") == 0) {
                             if(optind + 2 > argc) {
                                 fprintf(stderr, "%s", "\nUSAGE: -W simple-pattern 'pattern' 'string'\n\n"
@@ -1052,8 +1133,10 @@ int main(int argc, char **argv) {
 
     // initialize the log files
     open_all_log_files();
+
 	netdata_anonymous_statistics_enabled=-1;
-	send_statistics("START","-", "-");
+    struct rrdhost_system_info *system_info = calloc(1, sizeof(struct rrdhost_system_info));
+    if (get_system_info(system_info) == 0) send_statistics("START","-", "-");
 
 #ifdef NETDATA_INTERNAL_CHECKS
     if(debug_flags != 0) {
@@ -1088,14 +1171,13 @@ int main(int argc, char **argv) {
     // ------------------------------------------------------------------------
     // initialize rrd, registry, health, rrdpush, etc.
 
-    rrd_init(netdata_configured_hostname);
-
+    rrd_init(netdata_configured_hostname, system_info);
+    rrdhost_system_info_free(system_info);
     // ------------------------------------------------------------------------
     // enable log flood protection
 
     error_log_limit_reset();
 
-
     // ------------------------------------------------------------------------
     // spawn the threads
 
@@ -1113,7 +1195,7 @@ int main(int argc, char **argv) {
     }
 
     info("netdata initialization completed. Enjoy real-time performance monitoring!");
-
+    netdata_ready = 1;
 
     // ------------------------------------------------------------------------
     // unblock signals
diff --git a/daemon/system-info.sh b/daemon/system-info.sh
new file mode 100755
index 00000000..1f5bc52b
--- /dev/null
+++ b/daemon/system-info.sh
@@ -0,0 +1,122 @@
+#!/usr/bin/env sh
+
+# -------------------------------------------------------------------------------------------------
+# detect the kernel
+
+KERNEL_NAME="$(uname -s)"
+KERNEL_VERSION="$(uname -r)"
+ARCHITECTURE="$(uname -m)"
+
+# -------------------------------------------------------------------------------------------------
+# detect the operating system
+
+OS_DETECTION="unknown"
+NAME="unknown"
+VERSION="unknown"
+VERSION_ID="unknown"
+ID="unknown"
+ID_LIKE="unknown"
+
+if [ "${KERNEL_NAME}" = "Darwin" ]; then
+	# Mac OS
+	OIFS="$IFS"
+	IFS=$'\n'
+	set $(sw_vers) > /dev/null
+	NAME=$(echo $1 | tr "\n" ' ' | sed 's/ProductName:[ ]*//')
+	VERSION=$(echo $2 | tr "\n" ' ' | sed 's/ProductVersion:[ ]*//')
+	ID="mac"
+	ID_LIKE="mac"
+	OS_DETECTION="sw_vers"
+	IFS="$OIFS"
+else
+	if [ -f "/etc/os-release" ]; then
+		OS_DETECTION="/etc/os-release"
+		eval "$(grep -E "^(NAME|ID|ID_LIKE|VERSION|VERSION_ID)=" </etc/os-release)"
+	fi
+
+	if [ "${NAME}" = "unknown" ] || [ "${VERSION}" = "unknown" ] || [ "${ID}" = "unknown" ]; then
+		if [ -f "/etc/lsb-release" ]; then
+			if [ "${OS_DETECTION}" = "unknown" ]; then OS_DETECTION="/etc/lsb-release"; else OS_DETECTION="Mixed"; fi
+			DISTRIB_ID="unknown"
+			DISTRIB_RELEASE="unknown"
+			DISTRIB_CODENAME="unknown"
+			eval "$(grep -E "^(DISTRIB_ID|DISTRIB_RELEASE|DISTRIB_CODENAME)=" </etc/lsb-release)"
+			if [ "${NAME}" = "unknown" ]; then NAME="${DISTRIB_ID}"; fi
+			if [ "${VERSION}" = "unknown" ]; then VERSION="${DISTRIB_RELEASE}"; fi
+			if [ "${ID}" = "unknown" ]; then ID="${DISTRIB_CODENAME}"; fi
+		elif [ -n "$(command -v lsb_release 2>/dev/null)" ]; then
+			if [ "${OS_DETECTION}" = "unknown" ]; then OS_DETECTION="lsb_release"; else OS_DETECTION="Mixed"; fi
+			if [ "${NAME}" = "unknown" ]; then NAME="$(lsb_release -is 2>/dev/null)"; fi
+			if [ "${VERSION}" = "unknown" ]; then VERSION="$(lsb_release -rs 2>/dev/null)"; fi
+			if [ "${ID}" = "unknown" ]; then ID="$(lsb_release -cs 2>/dev/null)"; fi
+		fi
+	fi
+fi
+
+# -------------------------------------------------------------------------------------------------
+# detect the virtualization
+
+VIRTUALIZATION="unknown"
+VIRT_DETECTION="none"
+CONTAINER="unknown"
+CONT_DETECTION="none"
+
+if [ -n "$(command -v systemd-detect-virt 2>/dev/null)" ]; then
+	VIRTUALIZATION="$(systemd-detect-virt -v)"
+	VIRT_DETECTION="systemd-detect-virt"
+	CONTAINER="$(systemd-detect-virt -c)"
+	CONT_DETECTION="systemd-detect-virt"
+else
+	if grep -q "^flags.*hypervisor" /proc/cpuinfo 2>/dev/null; then
+		VIRTUALIZATION="hypervisor"
+		VIRT_DETECTION="/proc/cpuinfo"
+	fi
+fi
+
+# -------------------------------------------------------------------------------------------------
+# detect containers with heuristics
+
+if [ "${CONTAINER}" = "unknown" ]; then
+	if [ -f /proc/1/sched ] ; then
+		IFS='(, ' read -r process _ </proc/1/sched
+		if [ "${process}" = "netdata" ]; then
+			CONTAINER="container"
+			CONT_DETECTION="process"
+		fi
+	fi
+	# ubuntu and debian supply /bin/running-in-container
+	# https://www.apt-browse.org/browse/ubuntu/trusty/main/i386/upstart/1.12.1-0ubuntu4/file/bin/running-in-container
+	if /bin/running-in-container >/dev/null 2>&1; then
+		CONTAINER="container"
+		CONT_DETECTION="/bin/running-in-container"
+	fi
+
+	# lxc sets environment variable 'container'
+	#shellcheck disable=SC2154
+	if [ -n "${container}" ]; then
+		CONTAINER="lxc"
+		CONT_DETECTION="containerenv"
+	fi
+
+	# docker creates /.dockerenv
+	# http://stackoverflow.com/a/25518345
+	if [ -f "/.dockerenv" ]; then
+		CONTAINER="docker"
+		CONT_DETECTION="dockerenv"
+	fi
+fi
+
+echo "NETDATA_SYSTEM_OS_NAME=\"${NAME}\""
+echo "NETDATA_SYSTEM_OS_ID=${ID}"
+echo "NETDATA_SYSTEM_OS_ID_LIKE=${ID_LIKE}"
+echo "NETDATA_SYSTEM_OS_VERSION=${VERSION}"
+echo "NETDATA_SYSTEM_OS_VERSION_ID=${VERSION_ID}"
+echo "NETDATA_SYSTEM_OS_DETECTION=${OS_DETECTION}"
+echo "NETDATA_SYSTEM_KERNEL_NAME=${KERNEL_NAME}"
+echo "NETDATA_SYSTEM_KERNEL_VERSION=${KERNEL_VERSION}"
+echo "NETDATA_SYSTEM_ARCHITECTURE=${ARCHITECTURE}"
+echo "NETDATA_SYSTEM_VIRTUALIZATION=${VIRTUALIZATION}"
+echo "NETDATA_SYSTEM_VIRT_DETECTION=${VIRT_DETECTION}"
+echo "NETDATA_SYSTEM_CONTAINER=${CONTAINER}"
+echo "NETDATA_SYSTEM_CONTAINER_DETECTION=${CONT_DETECTION}"
+
diff --git a/daemon/unit_test.c b/daemon/unit_test.c
index a92a50a1..f9b58ce6 100644
--- a/daemon/unit_test.c
+++ b/daemon/unit_test.c
@@ -1566,3 +1566,215 @@ int unit_test(long delay, long shift)
 
     return ret;
 }
+
+#ifdef ENABLE_DBENGINE
+static inline void rrddim_set_by_pointer_fake_time(RRDDIM *rd, collected_number value, time_t now)
+{
+    rd->last_collected_time.tv_sec = now;
+    rd->last_collected_time.tv_usec = 0;
+    rd->collected_value = value;
+    rd->updated = 1;
+
+    rd->collections_counter++;
+
+    collected_number v = (value >= 0) ? value : -value;
+    if(unlikely(v > rd->collected_value_max)) rd->collected_value_max = v;
+}
+
+int test_dbengine(void)
+{
+    const int CHARTS = 128;
+    const int DIMS = 16; /* That gives us 2048 metrics */
+    const int POINTS = 16384; /* This produces 128MiB of metric data */
+    const int QUERY_BATCH = 4096;
+    uint8_t same;
+    int i, j, k, c, errors;
+    RRDHOST *host = NULL;
+    RRDSET *st[CHARTS];
+    RRDDIM *rd[CHARTS][DIMS];
+    char name[101];
+    time_t time_now;
+    collected_number last;
+    struct rrddim_query_handle handle;
+    calculated_number value, expected;
+    storage_number n;
+
+    error_log_limit_unlimited();
+    fprintf(stderr, "\nRunning DB-engine test\n");
+
+    default_rrd_memory_mode = RRD_MEMORY_MODE_DBENGINE;
+
+    debug(D_RRDHOST, "Initializing localhost with hostname 'unittest-dbengine'");
+    host = rrdhost_find_or_create(
+            "unittest-dbengine"
+            , "unittest-dbengine"
+            , "unittest-dbengine"
+            , os_type
+            , netdata_configured_timezone
+            , config_get(CONFIG_SECTION_BACKEND, "host tags", "")
+            , program_name
+            , program_version
+            , default_rrd_update_every
+            , default_rrd_history_entries
+            , RRD_MEMORY_MODE_DBENGINE
+            , default_health_enabled
+            , default_rrdpush_enabled
+            , default_rrdpush_destination
+            , default_rrdpush_api_key
+            , default_rrdpush_send_charts_matching
+            , NULL
+    );
+    if (NULL == host)
+        return 1;
+
+    for (i = 0 ; i < CHARTS ; ++i) {
+        snprintfz(name, 100, "dbengine-chart-%d", i);
+
+        // create the chart
+        st[i] = rrdset_create(host, "netdata", name, name, "netdata", NULL, "Unit Testing", "a value", "unittest",
+                NULL, 1, 1, RRDSET_TYPE_LINE);
+        rrdset_flag_set(st[i], RRDSET_FLAG_DEBUG);
+        rrdset_flag_set(st[i], RRDSET_FLAG_STORE_FIRST);
+        for (j = 0 ; j < DIMS ; ++j) {
+            snprintfz(name, 100, "dim-%d", j);
+
+            rd[i][j] = rrddim_add(st[i], name, NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+        }
+    }
+
+    // feed it with the test data
+    time_now = 1;
+    last = 0;
+    for (i = 0 ; i < CHARTS ; ++i) {
+        for (j = 0 ; j < DIMS ; ++j) {
+            rd[i][j]->last_collected_time.tv_sec =
+            st[i]->last_collected_time.tv_sec = st[i]->last_updated.tv_sec = time_now;
+            rd[i][j]->last_collected_time.tv_usec =
+                    st[i]->last_collected_time.tv_usec = st[i]->last_updated.tv_usec = 0;
+        }
+    }
+    for(c = 0; c < POINTS ; ++c) {
+        ++time_now; // time_now = c + 2
+        for (i = 0 ; i < CHARTS ; ++i) {
+            st[i]->usec_since_last_update = USEC_PER_SEC;
+
+            for (j = 0; j < DIMS; ++j) {
+                last = i * DIMS * POINTS + j * POINTS + c;
+                rrddim_set_by_pointer_fake_time(rd[i][j], last, time_now);
+            }
+            rrdset_done(st[i]);
+        }
+    }
+
+    // check the result
+    errors = 0;
+
+    for(c = 0; c < POINTS ; c += QUERY_BATCH) {
+        time_now = c + 2;
+        for (i = 0 ; i < CHARTS ; ++i) {
+            for (j = 0; j < DIMS; ++j) {
+                rd[i][j]->state->query_ops.init(rd[i][j], &handle, time_now, time_now + QUERY_BATCH);
+                for (k = 0; k < QUERY_BATCH; ++k) {
+                    last = i * DIMS * POINTS + j * POINTS + c + k;
+                    expected = unpack_storage_number(pack_storage_number((calculated_number)last, SN_EXISTS));
+
+                    n = rd[i][j]->state->query_ops.next_metric(&handle);
+                    value = unpack_storage_number(n);
+
+                    same = (calculated_number_round(value * 10000000.0) == calculated_number_round(expected * 10000000.0)) ? 1 : 0;
+                    if(!same) {
+                        fprintf(stderr, "    DB-engine unittest %s/%s: at %lu secs, expecting value "
+                                        CALCULATED_NUMBER_FORMAT ", found " CALCULATED_NUMBER_FORMAT ", ### E R R O R ###\n",
+                                st[i]->name, rd[i][j]->name, (unsigned long)time_now + k, expected, value);
+                        errors++;
+                    }
+                }
+                rd[i][j]->state->query_ops.finalize(&handle);
+            }
+        }
+    }
+
+    rrdeng_exit(host->rrdeng_ctx);
+    rrd_wrlock();
+    rrdhost_delete_charts(host);
+    rrd_unlock();
+
+    return errors;
+}
+
+void generate_dbengine_dataset(unsigned history_seconds)
+{
+    const int DIMS = 128;
+    const uint64_t EXPECTED_COMPRESSION_RATIO = 94;
+    int j;
+    RRDHOST *host = NULL;
+    RRDSET *st;
+    RRDDIM *rd[DIMS];
+    char name[101];
+    time_t time_current, time_present;
+
+    default_rrd_memory_mode = RRD_MEMORY_MODE_DBENGINE;
+    default_rrdeng_page_cache_mb = 128;
+    /* Worst case for uncompressible data */
+    default_rrdeng_disk_quota_mb = (((uint64_t)DIMS) * sizeof(storage_number) * history_seconds) / (1024 * 1024);
+    default_rrdeng_disk_quota_mb -= default_rrdeng_disk_quota_mb * EXPECTED_COMPRESSION_RATIO / 100;
+
+    error_log_limit_unlimited();
+    debug(D_RRDHOST, "Initializing localhost with hostname 'dbengine-dataset'");
+
+    host = rrdhost_find_or_create(
+            "dbengine-dataset"
+            , "dbengine-dataset"
+            , "dbengine-dataset"
+            , os_type
+            , netdata_configured_timezone
+            , config_get(CONFIG_SECTION_BACKEND, "host tags", "")
+            , program_name
+            , program_version
+            , default_rrd_update_every
+            , default_rrd_history_entries
+            , RRD_MEMORY_MODE_DBENGINE
+            , default_health_enabled
+            , default_rrdpush_enabled
+            , default_rrdpush_destination
+            , default_rrdpush_api_key
+            , default_rrdpush_send_charts_matching
+            , NULL
+    );
+    if (NULL == host)
+        return;
+
+    fprintf(stderr, "\nRunning DB-engine workload generator\n");
+
+    // create the chart
+    st = rrdset_create(host, "example", "random", "random", "example", NULL, "random", "random", "random",
+                          NULL, 1, 1, RRDSET_TYPE_LINE);
+    for (j = 0 ; j < DIMS ; ++j) {
+        snprintfz(name, 100, "random%d", j);
+
+        rd[j] = rrddim_add(st, name, NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+    }
+
+    time_present = now_realtime_sec();
+    // feed it with the test data
+    time_current = time_present - history_seconds;
+    for (j = 0 ; j < DIMS ; ++j) {
+        rd[j]->last_collected_time.tv_sec =
+        st->last_collected_time.tv_sec = st->last_updated.tv_sec = time_current;
+        rd[j]->last_collected_time.tv_usec =
+        st->last_collected_time.tv_usec = st->last_updated.tv_usec = 0;
+    }
+    for( ; time_current < time_present; ++time_current) {
+        st->usec_since_last_update = USEC_PER_SEC;
+
+        for (j = 0; j < DIMS; ++j) {
+            rrddim_set_by_pointer_fake_time(rd[j], (time_current + j) % 128, time_current);
+        }
+        rrdset_done(st);
+    }
+    rrd_wrlock();
+    rrdhost_free(host);
+    rrd_unlock();
+
+}
+#endif
\ No newline at end of file
diff --git a/daemon/unit_test.h b/daemon/unit_test.h
index 0023c8de..fd3e8017 100644
--- a/daemon/unit_test.h
+++ b/daemon/unit_test.h
@@ -8,5 +8,9 @@ extern int unit_test(long delay, long shift);
 extern int run_all_mockup_tests(void);
 extern int unit_test_str2ld(void);
 extern int unit_test_buffer(void);
+#ifdef ENABLE_DBENGINE
+extern int test_dbengine(void);
+extern void generate_dbengine_dataset(unsigned history_seconds);
+#endif
 
 #endif /* NETDATA_UNIT_TEST_H */