diff options
Diffstat (limited to 'collectors/proc.plugin/sys_kernel_mm_ksm.c')
| -rw-r--r-- | collectors/proc.plugin/sys_kernel_mm_ksm.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/collectors/proc.plugin/sys_kernel_mm_ksm.c b/collectors/proc.plugin/sys_kernel_mm_ksm.c deleted file mode 100644 index 45f1ac330..000000000 --- a/collectors/proc.plugin/sys_kernel_mm_ksm.c +++ /dev/null @@ -1,194 +0,0 @@ -// SPDX-License-Identifier: GPL-3.0-or-later - -#include "plugin_proc.h" - -#define PLUGIN_PROC_MODULE_KSM_NAME "/sys/kernel/mm/ksm" - -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), NULL); - - 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), NULL); - - 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), NULL); - - 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), NULL); - - //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*/ && netdata_zero_metrics_enabled == CONFIG_BOOLEAN_NO)) 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" - , "MiB" - , PLUGIN_PROC_NAME - , PLUGIN_PROC_MODULE_KSM_NAME - , NETDATA_CHART_PRIO_MEM_KSM - , update_every - , RRDSET_TYPE_STACKED - ); - - 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); - } - - 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" - , "MiB" - , PLUGIN_PROC_NAME - , PLUGIN_PROC_MODULE_KSM_NAME - , NETDATA_CHART_PRIO_MEM_KSM_SAVINGS - , 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); - } - - 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" - , PLUGIN_PROC_NAME - , PLUGIN_PROC_MODULE_KSM_NAME - , NETDATA_CHART_PRIO_MEM_KSM_RATIOS - , update_every - , RRDSET_TYPE_LINE - ); - - rd_savings = rrddim_add(st_mem_ksm_ratios, "savings", NULL, 1, 10000, RRD_ALGORITHM_ABSOLUTE); - } - - rrddim_set_by_pointer(st_mem_ksm_ratios, rd_savings, offered ? (saved * 1000000) / offered : 0); - rrdset_done(st_mem_ksm_ratios); - } - - return 0; -} |