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Diffstat (limited to 'collectors/proc.plugin/sys_block_zram.c')
-rw-r--r--collectors/proc.plugin/sys_block_zram.c285
1 files changed, 0 insertions, 285 deletions
diff --git a/collectors/proc.plugin/sys_block_zram.c b/collectors/proc.plugin/sys_block_zram.c
deleted file mode 100644
index dac7cac0f..000000000
--- a/collectors/proc.plugin/sys_block_zram.c
+++ /dev/null
@@ -1,285 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "plugin_proc.h"
-
-#define PLUGIN_PROC_MODULE_ZRAM_NAME "/sys/block/zram"
-#define rrdset_obsolete_and_pointer_null(st) do { if(st) { rrdset_is_obsolete___safe_from_collector_thread(st); (st) = NULL; } } while(st)
-
-typedef struct mm_stat {
- unsigned long long orig_data_size;
- unsigned long long compr_data_size;
- unsigned long long mem_used_total;
- unsigned long long mem_limit;
- unsigned long long mem_used_max;
- unsigned long long same_pages;
- unsigned long long pages_compacted;
-} MM_STAT;
-
-typedef struct zram_device {
- procfile *file;
-
- RRDSET *st_usage;
- RRDDIM *rd_compr_data_size;
- RRDDIM *rd_metadata_size;
-
- RRDSET *st_savings;
- RRDDIM *rd_original_size;
- RRDDIM *rd_savings_size;
-
- RRDSET *st_comp_ratio;
- RRDDIM *rd_comp_ratio;
-
- RRDSET *st_alloc_efficiency;
- RRDDIM *rd_alloc_efficiency;
-} ZRAM_DEVICE;
-
-static int try_get_zram_major_number(procfile *file) {
- size_t i;
- unsigned int lines = procfile_lines(file);
- int id = -1;
- char *name = NULL;
- for (i = 0; i < lines; i++)
- {
- if (procfile_linewords(file, i) < 2)
- continue;
- name = procfile_lineword(file, i, 1);
- if (strcmp(name, "zram") == 0)
- {
- id = str2i(procfile_lineword(file, i, 0));
- if (id == 0)
- return -1;
- return id;
- }
- }
- return -1;
-}
-
-static inline void init_rrd(const char *name, ZRAM_DEVICE *d, int update_every) {
- char chart_name[RRD_ID_LENGTH_MAX + 1];
-
- snprintfz(chart_name, RRD_ID_LENGTH_MAX, "zram_usage.%s", name);
- d->st_usage = rrdset_create_localhost(
- "mem"
- , chart_name
- , chart_name
- , name
- , "mem.zram_usage"
- , "ZRAM Memory Usage"
- , "MiB"
- , PLUGIN_PROC_NAME
- , PLUGIN_PROC_MODULE_ZRAM_NAME
- , NETDATA_CHART_PRIO_MEM_ZRAM
- , update_every
- , RRDSET_TYPE_AREA);
- d->rd_compr_data_size = rrddim_add(d->st_usage, "compressed", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
- d->rd_metadata_size = rrddim_add(d->st_usage, "metadata", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
- rrdlabels_add(d->st_usage->rrdlabels, "device", name, RRDLABEL_SRC_AUTO);
-
- snprintfz(chart_name, RRD_ID_LENGTH_MAX, "zram_savings.%s", name);
- d->st_savings = rrdset_create_localhost(
- "mem"
- , chart_name
- , chart_name
- , name
- , "mem.zram_savings"
- , "ZRAM Memory Savings"
- , "MiB"
- , PLUGIN_PROC_NAME
- , PLUGIN_PROC_MODULE_ZRAM_NAME
- , NETDATA_CHART_PRIO_MEM_ZRAM_SAVINGS
- , update_every
- , RRDSET_TYPE_AREA);
- d->rd_savings_size = rrddim_add(d->st_savings, "savings", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
- d->rd_original_size = rrddim_add(d->st_savings, "original", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
- rrdlabels_add(d->st_savings->rrdlabels, "device", name, RRDLABEL_SRC_AUTO);
-
- snprintfz(chart_name, RRD_ID_LENGTH_MAX, "zram_ratio.%s", name);
- d->st_comp_ratio = rrdset_create_localhost(
- "mem"
- , chart_name
- , chart_name
- , name
- , "mem.zram_ratio"
- , "ZRAM Compression Ratio (original to compressed)"
- , "ratio"
- , PLUGIN_PROC_NAME
- , PLUGIN_PROC_MODULE_ZRAM_NAME
- , NETDATA_CHART_PRIO_MEM_ZRAM_RATIO
- , update_every
- , RRDSET_TYPE_LINE);
- d->rd_comp_ratio = rrddim_add(d->st_comp_ratio, "ratio", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
- rrdlabels_add(d->st_comp_ratio->rrdlabels, "device", name, RRDLABEL_SRC_AUTO);
-
- snprintfz(chart_name, RRD_ID_LENGTH_MAX, "zram_efficiency.%s", name);
- d->st_alloc_efficiency = rrdset_create_localhost(
- "mem"
- , chart_name
- , chart_name
- , name
- , "mem.zram_efficiency"
- , "ZRAM Efficiency"
- , "percentage"
- , PLUGIN_PROC_NAME
- , PLUGIN_PROC_MODULE_ZRAM_NAME
- , NETDATA_CHART_PRIO_MEM_ZRAM_EFFICIENCY
- , update_every
- , RRDSET_TYPE_LINE);
- d->rd_alloc_efficiency = rrddim_add(d->st_alloc_efficiency, "percent", NULL, 1, 10000, RRD_ALGORITHM_ABSOLUTE);
- rrdlabels_add(d->st_alloc_efficiency->rrdlabels, "device", name, RRDLABEL_SRC_AUTO);
-}
-
-static int init_devices(DICTIONARY *devices, unsigned int zram_id, int update_every) {
- int count = 0;
- struct dirent *de;
- struct stat st;
- procfile *ff = NULL;
- ZRAM_DEVICE device;
- char filename[FILENAME_MAX + 1];
-
- snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/dev");
- DIR *dir = opendir(filename);
-
- if (unlikely(!dir))
- return 0;
- while ((de = readdir(dir)))
- {
- snprintfz(filename, FILENAME_MAX, "%s/dev/%s", netdata_configured_host_prefix, de->d_name);
- if (unlikely(stat(filename, &st) != 0))
- {
- collector_error("ZRAM : Unable to stat %s: %s", filename, strerror(errno));
- continue;
- }
- if (major(st.st_rdev) == zram_id)
- {
- collector_info("ZRAM : Found device %s", filename);
- snprintfz(filename, FILENAME_MAX, "%s/sys/block/%s/mm_stat", netdata_configured_host_prefix, de->d_name);
- ff = procfile_open(filename, " \t:", PROCFILE_FLAG_DEFAULT);
- if (ff == NULL)
- {
- collector_error("ZRAM : Failed to open %s: %s", filename, strerror(errno));
- continue;
- }
- device.file = ff;
- init_rrd(de->d_name, &device, update_every);
- dictionary_set(devices, de->d_name, &device, sizeof(ZRAM_DEVICE));
- count++;
- }
- }
- closedir(dir);
- return count;
-}
-
-static void free_device(DICTIONARY *dict, const char *name)
-{
- ZRAM_DEVICE *d = (ZRAM_DEVICE*)dictionary_get(dict, name);
- collector_info("ZRAM : Disabling monitoring of device %s", name);
- rrdset_obsolete_and_pointer_null(d->st_usage);
- rrdset_obsolete_and_pointer_null(d->st_savings);
- rrdset_obsolete_and_pointer_null(d->st_alloc_efficiency);
- rrdset_obsolete_and_pointer_null(d->st_comp_ratio);
- dictionary_del(dict, name);
-}
-
-static inline int read_mm_stat(procfile *ff, MM_STAT *stats) {
- ff = procfile_readall(ff);
- if (!ff)
- return -1;
- if (procfile_lines(ff) < 1) {
- procfile_close(ff);
- return -1;
- }
- if (procfile_linewords(ff, 0) < 7) {
- procfile_close(ff);
- return -1;
- }
-
- stats->orig_data_size = str2ull(procfile_word(ff, 0), NULL);
- stats->compr_data_size = str2ull(procfile_word(ff, 1), NULL);
- stats->mem_used_total = str2ull(procfile_word(ff, 2), NULL);
- stats->mem_limit = str2ull(procfile_word(ff, 3), NULL);
- stats->mem_used_max = str2ull(procfile_word(ff, 4), NULL);
- stats->same_pages = str2ull(procfile_word(ff, 5), NULL);
- stats->pages_compacted = str2ull(procfile_word(ff, 6), NULL);
- return 0;
-}
-
-static int collect_zram_metrics(const DICTIONARY_ITEM *item, void *entry, void *data) {
- const char *name = dictionary_acquired_item_name(item);
- ZRAM_DEVICE *dev = entry;
- DICTIONARY *dict = data;
-
- MM_STAT mm;
- int value;
-
- if (unlikely(read_mm_stat(dev->file, &mm) < 0)) {
- free_device(dict, name);
- return -1;
- }
-
- // zram_usage
- rrddim_set_by_pointer(dev->st_usage, dev->rd_compr_data_size, mm.compr_data_size);
- rrddim_set_by_pointer(dev->st_usage, dev->rd_metadata_size, mm.mem_used_total - mm.compr_data_size);
- rrdset_done(dev->st_usage);
-
- // zram_savings
- rrddim_set_by_pointer(dev->st_savings, dev->rd_savings_size, mm.compr_data_size - mm.orig_data_size);
- rrddim_set_by_pointer(dev->st_savings, dev->rd_original_size, mm.orig_data_size);
- rrdset_done(dev->st_savings);
-
- // zram_ratio
- value = mm.compr_data_size == 0 ? 1 : mm.orig_data_size * 100 / mm.compr_data_size;
- rrddim_set_by_pointer(dev->st_comp_ratio, dev->rd_comp_ratio, value);
- rrdset_done(dev->st_comp_ratio);
-
- // zram_efficiency
- value = mm.mem_used_total == 0 ? 100 : (mm.compr_data_size * 1000000 / mm.mem_used_total);
- rrddim_set_by_pointer(dev->st_alloc_efficiency, dev->rd_alloc_efficiency, value);
- rrdset_done(dev->st_alloc_efficiency);
-
- return 0;
-}
-
-int do_sys_block_zram(int update_every, usec_t dt) {
- static procfile *ff = NULL;
- static DICTIONARY *devices = NULL;
- static int initialized = 0;
- static int device_count = 0;
- int zram_id = -1;
-
- (void)dt;
-
- if (unlikely(!initialized))
- {
- initialized = 1;
-
- char filename[FILENAME_MAX + 1];
- snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/devices");
-
- ff = procfile_open(filename, " \t:", PROCFILE_FLAG_DEFAULT);
- if (ff == NULL)
- {
- collector_error("Cannot read %s", filename);
- return 1;
- }
- ff = procfile_readall(ff);
- if (!ff)
- return 1;
- zram_id = try_get_zram_major_number(ff);
- if (zram_id == -1)
- {
- if (ff != NULL)
- procfile_close(ff);
- return 1;
- }
- procfile_close(ff);
-
- devices = dictionary_create_advanced(DICT_OPTION_SINGLE_THREADED, &dictionary_stats_category_collectors, 0);
- device_count = init_devices(devices, (unsigned int)zram_id, update_every);
- }
-
- if (unlikely(device_count < 1))
- return 1;
-
- dictionary_walkthrough_write(devices, collect_zram_metrics, devices);
- return 0;
-} \ No newline at end of file
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-30 08:24:23 +0000