summaryrefslogtreecommitdiffstats
path: root/src/sys_kernel_mm_ksm.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/sys_kernel_mm_ksm.c')
-rw-r--r--src/sys_kernel_mm_ksm.c197
1 files changed, 0 insertions, 197 deletions
diff --git a/src/sys_kernel_mm_ksm.c b/src/sys_kernel_mm_ksm.c
deleted file mode 100644
index 7ca1366b..00000000
--- a/src/sys_kernel_mm_ksm.c
+++ /dev/null
@@ -1,197 +0,0 @@
-#include "common.h"
-
-typedef struct ksm_name_value {
- char filename[FILENAME_MAX + 1];
- unsigned long long value;
-} KSM_NAME_VALUE;
-
-#define PAGES_SHARED 0
-#define PAGES_SHARING 1
-#define PAGES_UNSHARED 2
-#define PAGES_VOLATILE 3
-#define PAGES_TO_SCAN 4
-
-KSM_NAME_VALUE values[] = {
- [PAGES_SHARED] = { "/sys/kernel/mm/ksm/pages_shared", 0ULL },
- [PAGES_SHARING] = { "/sys/kernel/mm/ksm/pages_sharing", 0ULL },
- [PAGES_UNSHARED] = { "/sys/kernel/mm/ksm/pages_unshared", 0ULL },
- [PAGES_VOLATILE] = { "/sys/kernel/mm/ksm/pages_volatile", 0ULL },
- // [PAGES_TO_SCAN] = { "/sys/kernel/mm/ksm/pages_to_scan", 0ULL },
-};
-
-int do_sys_kernel_mm_ksm(int update_every, usec_t dt) {
- (void)dt;
- static procfile *ff_pages_shared = NULL, *ff_pages_sharing = NULL, *ff_pages_unshared = NULL, *ff_pages_volatile = NULL/*, *ff_pages_to_scan = NULL*/;
- static unsigned long page_size = 0;
-
- if(unlikely(page_size == 0))
- page_size = (unsigned long)sysconf(_SC_PAGESIZE);
-
- if(unlikely(!ff_pages_shared)) {
- snprintfz(values[PAGES_SHARED].filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/kernel/mm/ksm/pages_shared");
- snprintfz(values[PAGES_SHARED].filename, FILENAME_MAX, "%s", config_get("plugin:proc:/sys/kernel/mm/ksm", "/sys/kernel/mm/ksm/pages_shared", values[PAGES_SHARED].filename));
- ff_pages_shared = procfile_open(values[PAGES_SHARED].filename, " \t:", PROCFILE_FLAG_DEFAULT);
- }
-
- if(unlikely(!ff_pages_sharing)) {
- snprintfz(values[PAGES_SHARING].filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/kernel/mm/ksm/pages_sharing");
- snprintfz(values[PAGES_SHARING].filename, FILENAME_MAX, "%s", config_get("plugin:proc:/sys/kernel/mm/ksm", "/sys/kernel/mm/ksm/pages_sharing", values[PAGES_SHARING].filename));
- ff_pages_sharing = procfile_open(values[PAGES_SHARING].filename, " \t:", PROCFILE_FLAG_DEFAULT);
- }
-
- if(unlikely(!ff_pages_unshared)) {
- snprintfz(values[PAGES_UNSHARED].filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/kernel/mm/ksm/pages_unshared");
- snprintfz(values[PAGES_UNSHARED].filename, FILENAME_MAX, "%s", config_get("plugin:proc:/sys/kernel/mm/ksm", "/sys/kernel/mm/ksm/pages_unshared", values[PAGES_UNSHARED].filename));
- ff_pages_unshared = procfile_open(values[PAGES_UNSHARED].filename, " \t:", PROCFILE_FLAG_DEFAULT);
- }
-
- if(unlikely(!ff_pages_volatile)) {
- snprintfz(values[PAGES_VOLATILE].filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/kernel/mm/ksm/pages_volatile");
- snprintfz(values[PAGES_VOLATILE].filename, FILENAME_MAX, "%s", config_get("plugin:proc:/sys/kernel/mm/ksm", "/sys/kernel/mm/ksm/pages_volatile", values[PAGES_VOLATILE].filename));
- ff_pages_volatile = procfile_open(values[PAGES_VOLATILE].filename, " \t:", PROCFILE_FLAG_DEFAULT);
- }
-
- //if(unlikely(!ff_pages_to_scan)) {
- // snprintfz(values[PAGES_TO_SCAN].filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/kernel/mm/ksm/pages_to_scan");
- // snprintfz(values[PAGES_TO_SCAN].filename, FILENAME_MAX, "%s", config_get("plugin:proc:/sys/kernel/mm/ksm", "/sys/kernel/mm/ksm/pages_to_scan", values[PAGES_TO_SCAN].filename));
- // ff_pages_to_scan = procfile_open(values[PAGES_TO_SCAN].filename, " \t:", PROCFILE_FLAG_DEFAULT);
- //}
-
- if(unlikely(!ff_pages_shared || !ff_pages_sharing || !ff_pages_unshared || !ff_pages_volatile /*|| !ff_pages_to_scan */))
- return 1;
-
- unsigned long long pages_shared = 0, pages_sharing = 0, pages_unshared = 0, pages_volatile = 0, /*pages_to_scan = 0,*/ offered = 0, saved = 0;
-
- ff_pages_shared = procfile_readall(ff_pages_shared);
- if(unlikely(!ff_pages_shared)) return 0; // we return 0, so that we will retry to open it next time
- pages_shared = str2ull(procfile_lineword(ff_pages_shared, 0, 0));
-
- ff_pages_sharing = procfile_readall(ff_pages_sharing);
- if(unlikely(!ff_pages_sharing)) return 0; // we return 0, so that we will retry to open it next time
- pages_sharing = str2ull(procfile_lineword(ff_pages_sharing, 0, 0));
-
- ff_pages_unshared = procfile_readall(ff_pages_unshared);
- if(unlikely(!ff_pages_unshared)) return 0; // we return 0, so that we will retry to open it next time
- pages_unshared = str2ull(procfile_lineword(ff_pages_unshared, 0, 0));
-
- ff_pages_volatile = procfile_readall(ff_pages_volatile);
- if(unlikely(!ff_pages_volatile)) return 0; // we return 0, so that we will retry to open it next time
- pages_volatile = str2ull(procfile_lineword(ff_pages_volatile, 0, 0));
-
- //ff_pages_to_scan = procfile_readall(ff_pages_to_scan);
- //if(unlikely(!ff_pages_to_scan)) return 0; // we return 0, so that we will retry to open it next time
- //pages_to_scan = str2ull(procfile_lineword(ff_pages_to_scan, 0, 0));
-
- offered = pages_sharing + pages_shared + pages_unshared + pages_volatile;
- saved = pages_sharing;
-
- if(unlikely(!offered /*|| !pages_to_scan*/)) return 0;
-
- // --------------------------------------------------------------------
-
- {
- static RRDSET *st_mem_ksm = NULL;
- static RRDDIM *rd_shared = NULL, *rd_unshared = NULL, *rd_sharing = NULL, *rd_volatile = NULL/*, *rd_to_scan = NULL*/;
-
- if (unlikely(!st_mem_ksm)) {
- st_mem_ksm = rrdset_create_localhost(
- "mem"
- , "ksm"
- , NULL
- , "ksm"
- , NULL
- , "Kernel Same Page Merging"
- , "MB"
- , "proc"
- , "/sys/kernel/mm/ksm"
- , NETDATA_CHART_PRIO_MEM_KSM
- , update_every
- , RRDSET_TYPE_AREA
- );
-
- rd_shared = rrddim_add(st_mem_ksm, "shared", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
- rd_unshared = rrddim_add(st_mem_ksm, "unshared", NULL, -1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
- rd_sharing = rrddim_add(st_mem_ksm, "sharing", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
- rd_volatile = rrddim_add(st_mem_ksm, "volatile", NULL, -1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
- //rd_to_scan = rrddim_add(st_mem_ksm, "to_scan", "to scan", -1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
- }
- else
- rrdset_next(st_mem_ksm);
-
- rrddim_set_by_pointer(st_mem_ksm, rd_shared, pages_shared * page_size);
- rrddim_set_by_pointer(st_mem_ksm, rd_unshared, pages_unshared * page_size);
- rrddim_set_by_pointer(st_mem_ksm, rd_sharing, pages_sharing * page_size);
- rrddim_set_by_pointer(st_mem_ksm, rd_volatile, pages_volatile * page_size);
- //rrddim_set_by_pointer(st_mem_ksm, rd_to_scan, pages_to_scan * page_size);
-
- rrdset_done(st_mem_ksm);
- }
-
- // --------------------------------------------------------------------
-
- {
- static RRDSET *st_mem_ksm_savings = NULL;
- static RRDDIM *rd_savings = NULL, *rd_offered = NULL;
-
- if (unlikely(!st_mem_ksm_savings)) {
- st_mem_ksm_savings = rrdset_create_localhost(
- "mem"
- , "ksm_savings"
- , NULL
- , "ksm"
- , NULL
- , "Kernel Same Page Merging Savings"
- , "MB"
- , "proc"
- , "/sys/kernel/mm/ksm"
- , NETDATA_CHART_PRIO_MEM_KSM + 1
- , update_every
- , RRDSET_TYPE_AREA
- );
-
- rd_savings = rrddim_add(st_mem_ksm_savings, "savings", NULL, -1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
- rd_offered = rrddim_add(st_mem_ksm_savings, "offered", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
- }
- else
- rrdset_next(st_mem_ksm_savings);
-
- rrddim_set_by_pointer(st_mem_ksm_savings, rd_savings, saved * page_size);
- rrddim_set_by_pointer(st_mem_ksm_savings, rd_offered, offered * page_size);
-
- rrdset_done(st_mem_ksm_savings);
- }
-
- // --------------------------------------------------------------------
-
- {
- static RRDSET *st_mem_ksm_ratios = NULL;
- static RRDDIM *rd_savings = NULL;
-
- if (unlikely(!st_mem_ksm_ratios)) {
- st_mem_ksm_ratios = rrdset_create_localhost(
- "mem"
- , "ksm_ratios"
- , NULL
- , "ksm"
- , NULL
- , "Kernel Same Page Merging Effectiveness"
- , "percentage"
- , "proc"
- , "/sys/kernel/mm/ksm"
- , NETDATA_CHART_PRIO_MEM_KSM + 2
- , update_every
- , RRDSET_TYPE_LINE
- );
-
- rd_savings = rrddim_add(st_mem_ksm_ratios, "savings", NULL, 1, 10000, RRD_ALGORITHM_ABSOLUTE);
- }
- else
- rrdset_next(st_mem_ksm_ratios);
-
- rrddim_set_by_pointer(st_mem_ksm_ratios, rd_savings, (saved * 1000000) / offered);
-
- rrdset_done(st_mem_ksm_ratios);
- }
-
- return 0;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-19 00:12:32 +0000