-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
#include "common.h"
-#include "log.h"
-#include "appconfig.h"
-#include "procfile.h"
-#include "rrd.h"
-#include "plugin_proc.h"
-typedef struct name_value {
- char filename[FILENAME_MAX + 1];
- unsigned long long value;
-} NAME_VALUE;
+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_VOLATILE 3
#define PAGES_TO_SCAN 4
-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 },
+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, unsigned long long 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 long page_size = -1;
-
- if(dt) {};
-
- if(page_size == -1)
- page_size = sysconf(_SC_PAGESIZE);
-
- if(!ff_pages_shared) {
- snprintf(values[PAGES_SHARED].filename, FILENAME_MAX, "%s%s", global_host_prefix, "/sys/kernel/mm/ksm/pages_shared");
- snprintf(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(!ff_pages_sharing) {
- snprintf(values[PAGES_SHARING].filename, FILENAME_MAX, "%s%s", global_host_prefix, "/sys/kernel/mm/ksm/pages_sharing");
- snprintf(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(!ff_pages_unshared) {
- snprintf(values[PAGES_UNSHARED].filename, FILENAME_MAX, "%s%s", global_host_prefix, "/sys/kernel/mm/ksm/pages_unshared");
- snprintf(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(!ff_pages_volatile) {
- snprintf(values[PAGES_VOLATILE].filename, FILENAME_MAX, "%s%s", global_host_prefix, "/sys/kernel/mm/ksm/pages_volatile");
- snprintf(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(!ff_pages_to_scan) {
- snprintf(values[PAGES_TO_SCAN].filename, FILENAME_MAX, "%s%s", global_host_prefix, "/sys/kernel/mm/ksm/pages_to_scan");
- snprintf(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(!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(!ff_pages_shared) return 0; // we return 0, so that we will retry to open it next time
- pages_shared = strtoull(procfile_lineword(ff_pages_shared, 0, 0), NULL, 10);
-
- ff_pages_sharing = procfile_readall(ff_pages_sharing);
- if(!ff_pages_sharing) return 0; // we return 0, so that we will retry to open it next time
- pages_sharing = strtoull(procfile_lineword(ff_pages_sharing, 0, 0), NULL, 10);
-
- ff_pages_unshared = procfile_readall(ff_pages_unshared);
- if(!ff_pages_unshared) return 0; // we return 0, so that we will retry to open it next time
- pages_unshared = strtoull(procfile_lineword(ff_pages_unshared, 0, 0), NULL, 10);
-
- ff_pages_volatile = procfile_readall(ff_pages_volatile);
- if(!ff_pages_volatile) return 0; // we return 0, so that we will retry to open it next time
- pages_volatile = strtoull(procfile_lineword(ff_pages_volatile, 0, 0), NULL, 10);
-
- ff_pages_to_scan = procfile_readall(ff_pages_to_scan);
- if(!ff_pages_to_scan) return 0; // we return 0, so that we will retry to open it next time
- pages_to_scan = strtoull(procfile_lineword(ff_pages_to_scan, 0, 0), NULL, 10);
-
- offered = pages_sharing + pages_unshared + pages_volatile;
- saved = pages_sharing - pages_shared;
-
- if(!offered || !pages_to_scan) return 0;
-
- RRDSET *st;
-
- // --------------------------------------------------------------------
-
- st = rrdset_find("mem.ksm");
- if(!st) {
- st = rrdset_create("mem", "ksm", NULL, "ksm", "Kernel Same Page Merging", "MB", 5000, update_every, RRDSET_TYPE_AREA);
-
- rrddim_add(st, "shared", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
- rrddim_add(st, "unshared", NULL, -1, 1024 * 1024, RRDDIM_ABSOLUTE);
- rrddim_add(st, "sharing", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
- rrddim_add(st, "volatile", NULL, -1, 1024 * 1024, RRDDIM_ABSOLUTE);
- rrddim_add(st, "to_scan", "to scan", -1, 1024 * 1024, RRDDIM_ABSOLUTE);
- }
- else rrdset_next(st);
-
- rrddim_set(st, "shared", pages_shared * page_size);
- rrddim_set(st, "unshared", pages_unshared * page_size);
- rrddim_set(st, "sharing", pages_sharing * page_size);
- rrddim_set(st, "volatile", pages_volatile * page_size);
- rrddim_set(st, "to_scan", pages_to_scan * page_size);
- rrdset_done(st);
-
- st = rrdset_find("mem.ksm_savings");
- if(!st) {
- st = rrdset_create("mem", "ksm_savings", NULL, "ksm", "Kernel Same Page Merging Savings", "MB", 5001, update_every, RRDSET_TYPE_AREA);
-
- rrddim_add(st, "savings", NULL, -1, 1024 * 1024, RRDDIM_ABSOLUTE);
- rrddim_add(st, "offered", NULL, 1, 1024 * 1024, RRDDIM_ABSOLUTE);
- }
- else rrdset_next(st);
-
- rrddim_set(st, "savings", saved * page_size);
- rrddim_set(st, "offered", offered * page_size);
- rrdset_done(st);
-
- st = rrdset_find("mem.ksm_ratios");
- if(!st) {
- st = rrdset_create("mem", "ksm_ratios", NULL, "ksm", "Kernel Same Page Merging Effectiveness", "percentage", 5002, update_every, RRDSET_TYPE_LINE);
-
- rrddim_add(st, "savings", NULL, 1, 10000, RRDDIM_ABSOLUTE);
- }
- else rrdset_next(st);
-
- rrddim_set(st, "savings", (saved * 1000000) / offered);
- rrdset_done(st);
-
- return 0;
+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 long page_size = -1;
+
+ if(page_size == -1)
+ page_size = sysconf(_SC_PAGESIZE);
+
+ if(!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(!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(!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(!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(!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(!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(!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(!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(!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(!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(!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 - pages_shared;
+
+ if(!offered || !pages_to_scan) return 0;
+
+ RRDSET *st;
+
+ // --------------------------------------------------------------------
+
+ st = rrdset_find_localhost("mem.ksm");
+ if(!st) {
+ st = rrdset_create_localhost("mem", "ksm", NULL, "ksm", NULL, "Kernel Same Page Merging", "MB", 5000
+ , update_every, RRDSET_TYPE_AREA);
+
+ rrddim_add(st, "shared", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+ rrddim_add(st, "unshared", NULL, -1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+ rrddim_add(st, "sharing", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+ rrddim_add(st, "volatile", NULL, -1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+ rrddim_add(st, "to_scan", "to scan", -1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(st);
+
+ rrddim_set(st, "shared", pages_shared * page_size);
+ rrddim_set(st, "unshared", pages_unshared * page_size);
+ rrddim_set(st, "sharing", pages_sharing * page_size);
+ rrddim_set(st, "volatile", pages_volatile * page_size);
+ rrddim_set(st, "to_scan", pages_to_scan * page_size);
+ rrdset_done(st);
+
+ st = rrdset_find_localhost("mem.ksm_savings");
+ if(!st) {
+ st = rrdset_create_localhost("mem", "ksm_savings", NULL, "ksm", NULL, "Kernel Same Page Merging Savings", "MB"
+ , 5001, update_every, RRDSET_TYPE_AREA);
+
+ rrddim_add(st, "savings", NULL, -1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+ rrddim_add(st, "offered", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(st);
+
+ rrddim_set(st, "savings", saved * page_size);
+ rrddim_set(st, "offered", offered * page_size);
+ rrdset_done(st);
+
+ st = rrdset_find_localhost("mem.ksm_ratios");
+ if(!st) {
+ st = rrdset_create_localhost("mem", "ksm_ratios", NULL, "ksm", NULL, "Kernel Same Page Merging Effectiveness"
+ , "percentage", 5002, update_every, RRDSET_TYPE_LINE);
+
+ rrddim_add(st, "savings", NULL, 1, 10000, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(st);
+
+ rrddim_set(st, "savings", (saved * 1000000) / offered);
+ rrdset_done(st);
+
+ return 0;
}
projects / netdata.git / blobdiff