Adding upstream version 1.44.3.upstream/1.44.3upstream

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

1 files changed, 960 insertions, 0 deletions

diff --git a/collectors/proc.plugin/zfs_common.c b/collectors/proc.plugin/zfs_common.c
new file mode 100644
index 00000000..cca0ae0e
--- /dev/null
+++ b/collectors/proc.plugin/zfs_common.c
@@ -0,0 +1,960 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "zfs_common.h"
+
+struct arcstats arcstats = { 0 };
+
+void generate_charts_arcstats(const char *plugin, const char *module, int show_zero_charts, int update_every) {
+    static int do_arc_size = -1, do_l2_size = -1, do_reads = -1, do_l2bytes = -1, do_ahits = -1, do_dhits = -1, \
+               do_phits = -1, do_mhits = -1, do_l2hits = -1, do_list_hits = -1;
+
+    if(unlikely(do_arc_size == -1))
+        do_arc_size = do_l2_size = do_reads = do_l2bytes = do_ahits = do_dhits = do_phits = do_mhits \
+        = do_l2hits = do_list_hits = show_zero_charts;
+
+    // ARC reads
+    unsigned long long aread = arcstats.hits + arcstats.misses;
+
+    // Demand reads
+    unsigned long long dhit = arcstats.demand_data_hits + arcstats.demand_metadata_hits;
+    unsigned long long dmiss = arcstats.demand_data_misses + arcstats.demand_metadata_misses;
+    unsigned long long dread = dhit + dmiss;
+
+    // Prefetch reads
+    unsigned long long phit = arcstats.prefetch_data_hits + arcstats.prefetch_metadata_hits;
+    unsigned long long pmiss = arcstats.prefetch_data_misses + arcstats.prefetch_metadata_misses;
+    unsigned long long pread = phit + pmiss;
+
+    // Metadata reads
+    unsigned long long mhit = arcstats.prefetch_metadata_hits + arcstats.demand_metadata_hits;
+    unsigned long long mmiss = arcstats.prefetch_metadata_misses + arcstats.demand_metadata_misses;
+    unsigned long long mread = mhit + mmiss;
+
+    // l2 reads
+    unsigned long long l2hit = arcstats.l2_hits;
+    unsigned long long l2miss = arcstats.l2_misses;
+    unsigned long long l2read = l2hit + l2miss;
+
+    // --------------------------------------------------------------------
+
+    if(do_arc_size == CONFIG_BOOLEAN_YES || arcstats.size || arcstats.c || arcstats.c_min || arcstats.c_max) {
+        do_arc_size = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_arc_size = NULL;
+        static RRDDIM *rd_arc_size = NULL;
+        static RRDDIM *rd_arc_target_size = NULL;
+        static RRDDIM *rd_arc_target_min_size = NULL;
+        static RRDDIM *rd_arc_target_max_size = NULL;
+
+        if (unlikely(!st_arc_size)) {
+            st_arc_size = rrdset_create_localhost(
+                    "zfs"
+                    , "arc_size"
+                    , NULL
+                    , ZFS_FAMILY_SIZE
+                    , NULL
+                    , "ZFS ARC Size"
+                    , "MiB"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_ARC_SIZE
+                    , update_every
+                    , RRDSET_TYPE_AREA
+            );
+
+            rd_arc_size            = rrddim_add(st_arc_size, "size",   "arcsz", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+            rd_arc_target_size     = rrddim_add(st_arc_size, "target", NULL,    1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+            rd_arc_target_min_size = rrddim_add(st_arc_size, "min",    "min (hard limit)", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+            rd_arc_target_max_size = rrddim_add(st_arc_size, "max",    "max (high water)", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+        }
+
+        rrddim_set_by_pointer(st_arc_size, rd_arc_size,            arcstats.size);
+        rrddim_set_by_pointer(st_arc_size, rd_arc_target_size,     arcstats.c);
+        rrddim_set_by_pointer(st_arc_size, rd_arc_target_min_size, arcstats.c_min);
+        rrddim_set_by_pointer(st_arc_size, rd_arc_target_max_size, arcstats.c_max);
+        rrdset_done(st_arc_size);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(likely(arcstats.l2exist) && (do_l2_size == CONFIG_BOOLEAN_YES || arcstats.l2_size || arcstats.l2_asize)) {
+        do_l2_size = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_l2_size = NULL;
+        static RRDDIM *rd_l2_size = NULL;
+        static RRDDIM *rd_l2_asize = NULL;
+
+        if (unlikely(!st_l2_size)) {
+            st_l2_size = rrdset_create_localhost(
+                    "zfs"
+                    , "l2_size"
+                    , NULL
+                    , ZFS_FAMILY_SIZE
+                    , NULL
+                    , "ZFS L2 ARC Size"
+                    , "MiB"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_L2_SIZE
+                    , update_every
+                    , RRDSET_TYPE_AREA
+            );
+
+            rd_l2_asize = rrddim_add(st_l2_size, "actual", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+            rd_l2_size  = rrddim_add(st_l2_size, "size",   NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+        }
+
+        rrddim_set_by_pointer(st_l2_size, rd_l2_size,  arcstats.l2_size);
+        rrddim_set_by_pointer(st_l2_size, rd_l2_asize, arcstats.l2_asize);
+        rrdset_done(st_l2_size);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(likely(do_reads == CONFIG_BOOLEAN_YES || aread || dread || pread || mread || l2read)) {
+        do_reads = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_reads = NULL;
+        static RRDDIM *rd_aread = NULL;
+        static RRDDIM *rd_dread = NULL;
+        static RRDDIM *rd_pread = NULL;
+        static RRDDIM *rd_mread = NULL;
+        static RRDDIM *rd_l2read = NULL;
+
+        if (unlikely(!st_reads)) {
+            st_reads = rrdset_create_localhost(
+                    "zfs"
+                    , "reads"
+                    , NULL
+                    , ZFS_FAMILY_ACCESSES
+                    , NULL
+                    , "ZFS Reads"
+                    , "reads/s"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_READS
+                    , update_every
+                    , RRDSET_TYPE_AREA
+            );
+
+            rd_aread  = rrddim_add(st_reads, "areads",  "arc",      1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_dread  = rrddim_add(st_reads, "dreads",  "demand",   1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_pread  = rrddim_add(st_reads, "preads",  "prefetch", 1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_mread  = rrddim_add(st_reads, "mreads",  "metadata", 1, 1, RRD_ALGORITHM_INCREMENTAL);
+
+            if(arcstats.l2exist)
+                rd_l2read = rrddim_add(st_reads, "l2reads", "l2",       1, 1, RRD_ALGORITHM_INCREMENTAL);
+        }
+
+        rrddim_set_by_pointer(st_reads, rd_aread,  aread);
+        rrddim_set_by_pointer(st_reads, rd_dread,  dread);
+        rrddim_set_by_pointer(st_reads, rd_pread,  pread);
+        rrddim_set_by_pointer(st_reads, rd_mread,  mread);
+
+        if(arcstats.l2exist)
+            rrddim_set_by_pointer(st_reads, rd_l2read, l2read);
+
+        rrdset_done(st_reads);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(likely(arcstats.l2exist && (do_l2bytes == CONFIG_BOOLEAN_YES || arcstats.l2_read_bytes || arcstats.l2_write_bytes))) {
+        do_l2bytes = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_l2bytes = NULL;
+        static RRDDIM *rd_l2_read_bytes = NULL;
+        static RRDDIM *rd_l2_write_bytes = NULL;
+
+        if (unlikely(!st_l2bytes)) {
+            st_l2bytes = rrdset_create_localhost(
+                    "zfs"
+                    , "bytes"
+                    , NULL
+                    , ZFS_FAMILY_ACCESSES
+                    , NULL
+                    , "ZFS ARC L2 Read/Write Rate"
+                    , "KiB/s"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_IO
+                    , update_every
+                    , RRDSET_TYPE_AREA
+            );
+
+            rd_l2_read_bytes  = rrddim_add(st_l2bytes, "read",  NULL,  1, 1024, RRD_ALGORITHM_INCREMENTAL);
+            rd_l2_write_bytes = rrddim_add(st_l2bytes, "write", NULL, -1, 1024, RRD_ALGORITHM_INCREMENTAL);
+        }
+
+        rrddim_set_by_pointer(st_l2bytes, rd_l2_read_bytes, arcstats.l2_read_bytes);
+        rrddim_set_by_pointer(st_l2bytes, rd_l2_write_bytes, arcstats.l2_write_bytes);
+        rrdset_done(st_l2bytes);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(likely(do_ahits == CONFIG_BOOLEAN_YES || arcstats.hits || arcstats.misses)) {
+        do_ahits = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_ahits = NULL;
+        static RRDDIM *rd_ahits = NULL;
+        static RRDDIM *rd_amisses = NULL;
+
+        if (unlikely(!st_ahits)) {
+            st_ahits = rrdset_create_localhost(
+                    "zfs"
+                    , "hits"
+                    , NULL
+                    , ZFS_FAMILY_EFFICIENCY
+                    , NULL
+                    , "ZFS ARC Hits"
+                    , "percentage"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_HITS
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rd_ahits   = rrddim_add(st_ahits, "hits", NULL,   1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+            rd_amisses = rrddim_add(st_ahits, "misses", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+        }
+
+        rrddim_set_by_pointer(st_ahits, rd_ahits,   arcstats.hits);
+        rrddim_set_by_pointer(st_ahits, rd_amisses, arcstats.misses);
+        rrdset_done(st_ahits);
+
+        static RRDSET *st_ahits_rate = NULL;
+        static RRDDIM *rd_ahits_rate = NULL;
+        static RRDDIM *rd_amisses_rate = NULL;
+
+        if (unlikely(!st_ahits_rate)) {
+            st_ahits_rate = rrdset_create_localhost(
+                    "zfs"
+                    , "hits_rate"
+                    , NULL
+                    , ZFS_FAMILY_EFFICIENCY
+                    , NULL
+                    , "ZFS ARC Hits Rate"
+                    , "events/s"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_HITS + 1
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rd_ahits_rate   = rrddim_add(st_ahits_rate, "hits", NULL,   1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_amisses_rate = rrddim_add(st_ahits_rate, "misses", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+        }
+
+        rrddim_set_by_pointer(st_ahits_rate, rd_ahits_rate,   arcstats.hits);
+        rrddim_set_by_pointer(st_ahits_rate, rd_amisses_rate, arcstats.misses);
+        rrdset_done(st_ahits_rate);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(likely(do_dhits == CONFIG_BOOLEAN_YES || dhit || dmiss)) {
+        do_dhits = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_dhits = NULL;
+        static RRDDIM *rd_dhits = NULL;
+        static RRDDIM *rd_dmisses = NULL;
+
+        if (unlikely(!st_dhits)) {
+            st_dhits = rrdset_create_localhost(
+                    "zfs"
+                    , "dhits"
+                    , NULL
+                    , ZFS_FAMILY_EFFICIENCY
+                    , NULL
+                    , "ZFS Demand Hits"
+                    , "percentage"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_DHITS
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rd_dhits   = rrddim_add(st_dhits, "hits",   NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+            rd_dmisses = rrddim_add(st_dhits, "misses", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+        }
+
+        rrddim_set_by_pointer(st_dhits, rd_dhits,   dhit);
+        rrddim_set_by_pointer(st_dhits, rd_dmisses, dmiss);
+        rrdset_done(st_dhits);
+
+        static RRDSET *st_dhits_rate = NULL;
+        static RRDDIM *rd_dhits_rate = NULL;
+        static RRDDIM *rd_dmisses_rate = NULL;
+
+        if (unlikely(!st_dhits_rate)) {
+            st_dhits_rate = rrdset_create_localhost(
+                    "zfs"
+                    , "dhits_rate"
+                    , NULL
+                    , ZFS_FAMILY_EFFICIENCY
+                    , NULL
+                    , "ZFS Demand Hits Rate"
+                    , "events/s"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_DHITS + 1
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rd_dhits_rate   = rrddim_add(st_dhits_rate, "hits",   NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_dmisses_rate = rrddim_add(st_dhits_rate, "misses", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+        }
+
+        rrddim_set_by_pointer(st_dhits_rate, rd_dhits_rate,   dhit);
+        rrddim_set_by_pointer(st_dhits_rate, rd_dmisses_rate, dmiss);
+        rrdset_done(st_dhits_rate);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(likely(do_phits == CONFIG_BOOLEAN_YES || phit || pmiss)) {
+        do_phits = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_phits = NULL;
+        static RRDDIM *rd_phits = NULL;
+        static RRDDIM *rd_pmisses = NULL;
+
+        if (unlikely(!st_phits)) {
+            st_phits = rrdset_create_localhost(
+                    "zfs"
+                    , "phits"
+                    , NULL
+                    , ZFS_FAMILY_EFFICIENCY
+                    , NULL
+                    , "ZFS Prefetch Hits"
+                    , "percentage"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_PHITS
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rd_phits   = rrddim_add(st_phits, "hits",   NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+            rd_pmisses = rrddim_add(st_phits, "misses", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+        }
+
+        rrddim_set_by_pointer(st_phits, rd_phits,   phit);
+        rrddim_set_by_pointer(st_phits, rd_pmisses, pmiss);
+        rrdset_done(st_phits);
+
+        static RRDSET *st_phits_rate = NULL;
+        static RRDDIM *rd_phits_rate = NULL;
+        static RRDDIM *rd_pmisses_rate = NULL;
+
+        if (unlikely(!st_phits_rate)) {
+            st_phits_rate = rrdset_create_localhost(
+                    "zfs"
+                    , "phits_rate"
+                    , NULL
+                    , ZFS_FAMILY_EFFICIENCY
+                    , NULL
+                    , "ZFS Prefetch Hits Rate"
+                    , "events/s"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_PHITS + 1
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rd_phits_rate   = rrddim_add(st_phits_rate, "hits",   NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_pmisses_rate = rrddim_add(st_phits_rate, "misses", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+        }
+
+        rrddim_set_by_pointer(st_phits_rate, rd_phits_rate,   phit);
+        rrddim_set_by_pointer(st_phits_rate, rd_pmisses_rate, pmiss);
+        rrdset_done(st_phits_rate);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(likely(do_mhits == CONFIG_BOOLEAN_YES || mhit || mmiss)) {
+        do_mhits = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_mhits = NULL;
+        static RRDDIM *rd_mhits = NULL;
+        static RRDDIM *rd_mmisses = NULL;
+
+        if (unlikely(!st_mhits)) {
+            st_mhits = rrdset_create_localhost(
+                    "zfs"
+                    , "mhits"
+                    , NULL
+                    , ZFS_FAMILY_EFFICIENCY
+                    , NULL
+                    , "ZFS Metadata Hits"
+                    , "percentage"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_MHITS
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rd_mhits   = rrddim_add(st_mhits, "hits",   NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+            rd_mmisses = rrddim_add(st_mhits, "misses", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+        }
+
+        rrddim_set_by_pointer(st_mhits, rd_mhits,   mhit);
+        rrddim_set_by_pointer(st_mhits, rd_mmisses, mmiss);
+        rrdset_done(st_mhits);
+
+        static RRDSET *st_mhits_rate = NULL;
+        static RRDDIM *rd_mhits_rate = NULL;
+        static RRDDIM *rd_mmisses_rate = NULL;
+
+        if (unlikely(!st_mhits_rate)) {
+            st_mhits_rate = rrdset_create_localhost(
+                    "zfs"
+                    , "mhits_rate"
+                    , NULL
+                    , ZFS_FAMILY_EFFICIENCY
+                    , NULL
+                    , "ZFS Metadata Hits Rate"
+                    , "events/s"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_MHITS + 1
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rd_mhits_rate   = rrddim_add(st_mhits_rate, "hits",   NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_mmisses_rate = rrddim_add(st_mhits_rate, "misses", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+        }
+
+        rrddim_set_by_pointer(st_mhits_rate, rd_mhits_rate,   mhit);
+        rrddim_set_by_pointer(st_mhits_rate, rd_mmisses_rate, mmiss);
+        rrdset_done(st_mhits_rate);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(likely(arcstats.l2exist && (do_l2hits == CONFIG_BOOLEAN_YES || l2hit || l2miss))) {
+        do_l2hits = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_l2hits = NULL;
+        static RRDDIM *rd_l2hits = NULL;
+        static RRDDIM *rd_l2misses = NULL;
+
+        if (unlikely(!st_l2hits)) {
+            st_l2hits = rrdset_create_localhost(
+                    "zfs"
+                    , "l2hits"
+                    , NULL
+                    , ZFS_FAMILY_EFFICIENCY
+                    , NULL
+                    , "ZFS L2 Hits"
+                    , "percentage"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_L2HITS
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rd_l2hits   = rrddim_add(st_l2hits, "hits",   NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+            rd_l2misses = rrddim_add(st_l2hits, "misses", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+        }
+
+        rrddim_set_by_pointer(st_l2hits, rd_l2hits,   l2hit);
+        rrddim_set_by_pointer(st_l2hits, rd_l2misses, l2miss);
+        rrdset_done(st_l2hits);
+
+        static RRDSET *st_l2hits_rate = NULL;
+        static RRDDIM *rd_l2hits_rate = NULL;
+        static RRDDIM *rd_l2misses_rate = NULL;
+
+        if (unlikely(!st_l2hits_rate)) {
+            st_l2hits_rate = rrdset_create_localhost(
+                    "zfs"
+                    , "l2hits_rate"
+                    , NULL
+                    , ZFS_FAMILY_EFFICIENCY
+                    , NULL
+                    , "ZFS L2 Hits Rate"
+                    , "events/s"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_L2HITS + 1
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rd_l2hits_rate   = rrddim_add(st_l2hits_rate, "hits",   NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_l2misses_rate = rrddim_add(st_l2hits_rate, "misses", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+        }
+
+        rrddim_set_by_pointer(st_l2hits_rate, rd_l2hits_rate, l2hit);
+        rrddim_set_by_pointer(st_l2hits_rate, rd_l2misses_rate, l2miss);
+        rrdset_done(st_l2hits_rate);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(likely(do_list_hits == CONFIG_BOOLEAN_YES || arcstats.mfu_hits \
+                                                 || arcstats.mru_hits \
+                                                 || arcstats.mfu_ghost_hits \
+                                                 || arcstats.mru_ghost_hits)) {
+        do_list_hits = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_list_hits = NULL;
+        static RRDDIM *rd_mfu = NULL;
+        static RRDDIM *rd_mru = NULL;
+        static RRDDIM *rd_mfug = NULL;
+        static RRDDIM *rd_mrug = NULL;
+
+        if (unlikely(!st_list_hits)) {
+            st_list_hits = rrdset_create_localhost(
+                    "zfs"
+                    , "list_hits"
+                    , NULL
+                    , ZFS_FAMILY_EFFICIENCY
+                    , NULL
+                    , "ZFS List Hits"
+                    , "hits/s"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_LIST_HITS
+                    , update_every
+                    , RRDSET_TYPE_AREA
+            );
+
+            rd_mfu = rrddim_add(st_list_hits,  "mfu",  NULL,        1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_mfug = rrddim_add(st_list_hits, "mfug", "mfu ghost", 1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_mru = rrddim_add(st_list_hits,  "mru",  NULL,        1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_mrug = rrddim_add(st_list_hits, "mrug", "mru ghost", 1, 1, RRD_ALGORITHM_INCREMENTAL);
+        }
+
+        rrddim_set_by_pointer(st_list_hits, rd_mfu, arcstats.mfu_hits);
+        rrddim_set_by_pointer(st_list_hits, rd_mru, arcstats.mru_hits);
+        rrddim_set_by_pointer(st_list_hits, rd_mfug, arcstats.mfu_ghost_hits);
+        rrddim_set_by_pointer(st_list_hits, rd_mrug, arcstats.mru_ghost_hits);
+        rrdset_done(st_list_hits);
+    }
+}
+
+void generate_charts_arc_summary(const char *plugin, const char *module, int show_zero_charts, int update_every) {
+    static int do_arc_size_breakdown = -1, do_memory = -1, do_important_ops = -1, do_actual_hits = -1, \
+               do_demand_data_hits = -1, do_prefetch_data_hits = -1, do_hash_elements = -1, do_hash_chains = -1;
+
+    if(unlikely(do_arc_size_breakdown == -1))
+        do_arc_size_breakdown = do_memory = do_important_ops = do_actual_hits = do_demand_data_hits \
+        = do_prefetch_data_hits = do_hash_elements = do_hash_chains = show_zero_charts;
+
+    unsigned long long arc_accesses_total = arcstats.hits + arcstats.misses;
+    unsigned long long real_hits = arcstats.mfu_hits + arcstats.mru_hits;
+    unsigned long long real_misses = arc_accesses_total - real_hits;
+
+    //unsigned long long anon_hits = arcstats.hits - (arcstats.mfu_hits + arcstats.mru_hits + arcstats.mfu_ghost_hits + arcstats.mru_ghost_hits);
+
+    unsigned long long arc_size = arcstats.size;
+    unsigned long long mru_size = arcstats.p;
+    //unsigned long long target_min_size = arcstats.c_min;
+    //unsigned long long target_max_size = arcstats.c_max;
+    unsigned long long target_size = arcstats.c;
+    //unsigned long long target_size_ratio = (target_max_size / target_min_size);
+
+    unsigned long long mfu_size;
+    if(arc_size > target_size)
+        mfu_size = arc_size - mru_size;
+    else
+        mfu_size = target_size - mru_size;
+
+    // --------------------------------------------------------------------
+
+    if(likely(do_arc_size_breakdown == CONFIG_BOOLEAN_YES || mru_size || mfu_size)) {
+        do_arc_size_breakdown = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_arc_size_breakdown = NULL;
+        static RRDDIM *rd_most_recent = NULL;
+        static RRDDIM *rd_most_frequent = NULL;
+
+        if (unlikely(!st_arc_size_breakdown)) {
+            st_arc_size_breakdown = rrdset_create_localhost(
+                    "zfs"
+                    , "arc_size_breakdown"
+                    , NULL
+                    , ZFS_FAMILY_EFFICIENCY
+                    , NULL
+                    , "ZFS ARC Size Breakdown"
+                    , "percentage"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_ARC_SIZE_BREAKDOWN
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rd_most_recent   = rrddim_add(st_arc_size_breakdown, "recent", NULL,   1, 1, RRD_ALGORITHM_PCENT_OVER_ROW_TOTAL);
+            rd_most_frequent = rrddim_add(st_arc_size_breakdown, "frequent", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_ROW_TOTAL);
+        }
+
+        rrddim_set_by_pointer(st_arc_size_breakdown, rd_most_recent,   mru_size);
+        rrddim_set_by_pointer(st_arc_size_breakdown, rd_most_frequent, mfu_size);
+        rrdset_done(st_arc_size_breakdown);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(likely(do_memory == CONFIG_BOOLEAN_YES || arcstats.memory_direct_count \
+                                              || arcstats.memory_throttle_count \
+                                              || arcstats.memory_indirect_count)) {
+        do_memory = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_memory = NULL;
+#ifndef __FreeBSD__
+        static RRDDIM *rd_direct = NULL;
+#endif
+        static RRDDIM *rd_throttled = NULL;
+#ifndef __FreeBSD__
+        static RRDDIM *rd_indirect = NULL;
+#endif
+
+        if (unlikely(!st_memory)) {
+            st_memory = rrdset_create_localhost(
+                    "zfs"
+                    , "memory_ops"
+                    , NULL
+                    , ZFS_FAMILY_OPERATIONS
+                    , NULL
+                    , "ZFS Memory Operations"
+                    , "operations/s"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_MEMORY_OPS
+                    , update_every
+                    , RRDSET_TYPE_LINE
+            );
+
+#ifndef __FreeBSD__
+            rd_direct    = rrddim_add(st_memory, "direct",    NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+#endif
+            rd_throttled = rrddim_add(st_memory, "throttled", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+#ifndef __FreeBSD__
+            rd_indirect  = rrddim_add(st_memory, "indirect",  NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+#endif
+        }
+
+#ifndef __FreeBSD__
+        rrddim_set_by_pointer(st_memory, rd_direct,    arcstats.memory_direct_count);
+#endif
+        rrddim_set_by_pointer(st_memory, rd_throttled, arcstats.memory_throttle_count);
+#ifndef __FreeBSD__
+        rrddim_set_by_pointer(st_memory, rd_indirect,  arcstats.memory_indirect_count);
+#endif
+        rrdset_done(st_memory);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(likely(do_important_ops == CONFIG_BOOLEAN_YES || arcstats.deleted \
+                                                     || arcstats.evict_skip \
+                                                     || arcstats.mutex_miss \
+                                                     || arcstats.hash_collisions)) {
+        do_important_ops = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_important_ops = NULL;
+        static RRDDIM *rd_deleted = NULL;
+        static RRDDIM *rd_mutex_misses = NULL;
+        static RRDDIM *rd_evict_skips = NULL;
+        static RRDDIM *rd_hash_collisions = NULL;
+
+        if (unlikely(!st_important_ops)) {
+            st_important_ops = rrdset_create_localhost(
+                    "zfs"
+                    , "important_ops"
+                    , NULL
+                    , ZFS_FAMILY_OPERATIONS
+                    , NULL
+                    , "ZFS Important Operations"
+                    , "operations/s"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_IMPORTANT_OPS
+                    , update_every
+                    , RRDSET_TYPE_LINE
+            );
+
+            rd_evict_skips     = rrddim_add(st_important_ops, "eskip",   "evict skip", 1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_deleted         = rrddim_add(st_important_ops, "deleted", NULL,         1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_mutex_misses    = rrddim_add(st_important_ops, "mtxmis",  "mutex miss", 1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_hash_collisions = rrddim_add(st_important_ops, "hash_collisions", "hash collisions", 1, 1, RRD_ALGORITHM_INCREMENTAL);
+        }
+
+        rrddim_set_by_pointer(st_important_ops, rd_deleted,      arcstats.deleted);
+        rrddim_set_by_pointer(st_important_ops, rd_evict_skips,  arcstats.evict_skip);
+        rrddim_set_by_pointer(st_important_ops, rd_mutex_misses, arcstats.mutex_miss);
+        rrddim_set_by_pointer(st_important_ops, rd_hash_collisions, arcstats.hash_collisions);
+        rrdset_done(st_important_ops);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(likely(do_actual_hits == CONFIG_BOOLEAN_YES || real_hits || real_misses)) {
+        do_actual_hits = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_actual_hits = NULL;
+        static RRDDIM *rd_actual_hits = NULL;
+        static RRDDIM *rd_actual_misses = NULL;
+
+        if (unlikely(!st_actual_hits)) {
+            st_actual_hits = rrdset_create_localhost(
+                    "zfs"
+                    , "actual_hits"
+                    , NULL
+                    , ZFS_FAMILY_EFFICIENCY
+                    , NULL
+                    , "ZFS Actual Cache Hits"
+                    , "percentage"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_ACTUAL_HITS
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rd_actual_hits   = rrddim_add(st_actual_hits, "hits", NULL,   1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+            rd_actual_misses = rrddim_add(st_actual_hits, "misses", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+        }
+
+        rrddim_set_by_pointer(st_actual_hits, rd_actual_hits,   real_hits);
+        rrddim_set_by_pointer(st_actual_hits, rd_actual_misses, real_misses);
+        rrdset_done(st_actual_hits);
+
+        static RRDSET *st_actual_hits_rate = NULL;
+        static RRDDIM *rd_actual_hits_rate = NULL;
+        static RRDDIM *rd_actual_misses_rate = NULL;
+
+        if (unlikely(!st_actual_hits_rate)) {
+            st_actual_hits_rate = rrdset_create_localhost(
+                    "zfs"
+                    , "actual_hits_rate"
+                    , NULL
+                    , ZFS_FAMILY_EFFICIENCY
+                    , NULL
+                    , "ZFS Actual Cache Hits Rate"
+                    , "events/s"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_ACTUAL_HITS + 1
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rd_actual_hits_rate   = rrddim_add(st_actual_hits_rate, "hits", NULL,   1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_actual_misses_rate = rrddim_add(st_actual_hits_rate, "misses", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+        }
+
+        rrddim_set_by_pointer(st_actual_hits_rate, rd_actual_hits_rate,   real_hits);
+        rrddim_set_by_pointer(st_actual_hits_rate, rd_actual_misses_rate, real_misses);
+        rrdset_done(st_actual_hits_rate);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(likely(do_demand_data_hits == CONFIG_BOOLEAN_YES || arcstats.demand_data_hits || arcstats.demand_data_misses)) {
+        do_demand_data_hits = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_demand_data_hits = NULL;
+        static RRDDIM *rd_demand_data_hits = NULL;
+        static RRDDIM *rd_demand_data_misses = NULL;
+
+        if (unlikely(!st_demand_data_hits)) {
+            st_demand_data_hits = rrdset_create_localhost(
+                    "zfs"
+                    , "demand_data_hits"
+                    , NULL
+                    , ZFS_FAMILY_EFFICIENCY
+                    , NULL
+                    , "ZFS Data Demand Efficiency"
+                    , "percentage"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_DEMAND_DATA_HITS
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rd_demand_data_hits   = rrddim_add(st_demand_data_hits, "hits", NULL,   1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+            rd_demand_data_misses = rrddim_add(st_demand_data_hits, "misses", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+        }
+
+        rrddim_set_by_pointer(st_demand_data_hits, rd_demand_data_hits,   arcstats.demand_data_hits);
+        rrddim_set_by_pointer(st_demand_data_hits, rd_demand_data_misses, arcstats.demand_data_misses);
+        rrdset_done(st_demand_data_hits);
+
+        static RRDSET *st_demand_data_hits_rate = NULL;
+        static RRDDIM *rd_demand_data_hits_rate = NULL;
+        static RRDDIM *rd_demand_data_misses_rate = NULL;
+
+        if (unlikely(!st_demand_data_hits_rate)) {
+            st_demand_data_hits_rate = rrdset_create_localhost(
+                    "zfs"
+                    , "demand_data_hits_rate"
+                    , NULL
+                    , ZFS_FAMILY_EFFICIENCY
+                    , NULL
+                    , "ZFS Data Demand Efficiency Rate"
+                    , "events/s"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_DEMAND_DATA_HITS + 1
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rd_demand_data_hits_rate   = rrddim_add(st_demand_data_hits_rate, "hits", NULL,   1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_demand_data_misses_rate = rrddim_add(st_demand_data_hits_rate, "misses", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+        }
+
+        rrddim_set_by_pointer(st_demand_data_hits_rate, rd_demand_data_hits_rate,   arcstats.demand_data_hits);
+        rrddim_set_by_pointer(st_demand_data_hits_rate, rd_demand_data_misses_rate, arcstats.demand_data_misses);
+        rrdset_done(st_demand_data_hits_rate);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(likely(do_prefetch_data_hits == CONFIG_BOOLEAN_YES || arcstats.prefetch_data_hits \
+                                                          || arcstats.prefetch_data_misses)) {
+        do_prefetch_data_hits = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_prefetch_data_hits = NULL;
+        static RRDDIM *rd_prefetch_data_hits = NULL;
+        static RRDDIM *rd_prefetch_data_misses = NULL;
+
+        if (unlikely(!st_prefetch_data_hits)) {
+            st_prefetch_data_hits = rrdset_create_localhost(
+                    "zfs"
+                    , "prefetch_data_hits"
+                    , NULL
+                    , ZFS_FAMILY_EFFICIENCY
+                    , NULL
+                    , "ZFS Data Prefetch Efficiency"
+                    , "percentage"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_PREFETCH_DATA_HITS
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rd_prefetch_data_hits   = rrddim_add(st_prefetch_data_hits, "hits", NULL,   1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+            rd_prefetch_data_misses = rrddim_add(st_prefetch_data_hits, "misses", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+        }
+
+        rrddim_set_by_pointer(st_prefetch_data_hits, rd_prefetch_data_hits,   arcstats.prefetch_data_hits);
+        rrddim_set_by_pointer(st_prefetch_data_hits, rd_prefetch_data_misses, arcstats.prefetch_data_misses);
+        rrdset_done(st_prefetch_data_hits);
+
+        static RRDSET *st_prefetch_data_hits_rate = NULL;
+        static RRDDIM *rd_prefetch_data_hits_rate = NULL;
+        static RRDDIM *rd_prefetch_data_misses_rate = NULL;
+
+        if (unlikely(!st_prefetch_data_hits_rate)) {
+            st_prefetch_data_hits_rate = rrdset_create_localhost(
+                    "zfs"
+                    , "prefetch_data_hits_rate"
+                    , NULL
+                    , ZFS_FAMILY_EFFICIENCY
+                    , NULL
+                    , "ZFS Data Prefetch Efficiency Rate"
+                    , "events/s"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_PREFETCH_DATA_HITS + 1
+                    , update_every
+                    , RRDSET_TYPE_STACKED
+            );
+
+            rd_prefetch_data_hits_rate   = rrddim_add(st_prefetch_data_hits_rate, "hits", NULL,   1, 1, RRD_ALGORITHM_INCREMENTAL);
+            rd_prefetch_data_misses_rate = rrddim_add(st_prefetch_data_hits_rate, "misses", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+        }
+
+        rrddim_set_by_pointer(st_prefetch_data_hits_rate, rd_prefetch_data_hits_rate,   arcstats.prefetch_data_hits);
+        rrddim_set_by_pointer(st_prefetch_data_hits_rate, rd_prefetch_data_misses_rate, arcstats.prefetch_data_misses);
+        rrdset_done(st_prefetch_data_hits_rate);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(likely(do_hash_elements == CONFIG_BOOLEAN_YES || arcstats.hash_elements || arcstats.hash_elements_max)) {
+        do_hash_elements = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_hash_elements = NULL;
+        static RRDDIM *rd_hash_elements_current = NULL;
+        static RRDDIM *rd_hash_elements_max = NULL;
+
+        if (unlikely(!st_hash_elements)) {
+            st_hash_elements = rrdset_create_localhost(
+                    "zfs"
+                    , "hash_elements"
+                    , NULL
+                    , ZFS_FAMILY_HASH
+                    , NULL
+                    , "ZFS ARC Hash Elements"
+                    , "elements"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_HASH_ELEMENTS
+                    , update_every
+                    , RRDSET_TYPE_LINE
+            );
+
+            rd_hash_elements_current = rrddim_add(st_hash_elements, "current", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+            rd_hash_elements_max     = rrddim_add(st_hash_elements, "max",     NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+        }
+
+        rrddim_set_by_pointer(st_hash_elements, rd_hash_elements_current, arcstats.hash_elements);
+        rrddim_set_by_pointer(st_hash_elements, rd_hash_elements_max, arcstats.hash_elements_max);
+        rrdset_done(st_hash_elements);
+    }
+
+    // --------------------------------------------------------------------
+
+    if(likely(do_hash_chains == CONFIG_BOOLEAN_YES || arcstats.hash_chains || arcstats.hash_chain_max)) {
+        do_hash_chains = CONFIG_BOOLEAN_YES;
+
+        static RRDSET *st_hash_chains = NULL;
+        static RRDDIM *rd_hash_chains_current = NULL;
+        static RRDDIM *rd_hash_chains_max = NULL;
+
+        if (unlikely(!st_hash_chains)) {
+            st_hash_chains = rrdset_create_localhost(
+                    "zfs"
+                    , "hash_chains"
+                    , NULL
+                    , ZFS_FAMILY_HASH
+                    , NULL
+                    , "ZFS ARC Hash Chains"
+                    , "chains"
+                    , plugin
+                    , module
+                    , NETDATA_CHART_PRIO_ZFS_HASH_CHAINS
+                    , update_every
+                    , RRDSET_TYPE_LINE
+            );
+
+            rd_hash_chains_current = rrddim_add(st_hash_chains, "current", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+            rd_hash_chains_max     = rrddim_add(st_hash_chains, "max",     NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+        }
+
+        rrddim_set_by_pointer(st_hash_chains, rd_hash_chains_current, arcstats.hash_chains);
+        rrddim_set_by_pointer(st_hash_chains, rd_hash_chains_max, arcstats.hash_chain_max);
+        rrdset_done(st_hash_chains);
+    }
+
+    // --------------------------------------------------------------------
+
+}