From b485aab7e71c1625cfc27e0f92c9509f42378458 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 5 May 2024 13:19:16 +0200 Subject: Adding upstream version 1.45.3+dfsg. Signed-off-by: Daniel Baumann --- collectors/proc.plugin/sys_block_zram.c | 285 -------------------------------- 1 file changed, 285 deletions(-) delete mode 100644 collectors/proc.plugin/sys_block_zram.c (limited to 'collectors/proc.plugin/sys_block_zram.c') 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 -- cgit v1.2.3