diff options
Diffstat (limited to 'collectors/proc.plugin/proc_spl_kstat_zfs.c')
| -rw-r--r-- | collectors/proc.plugin/proc_spl_kstat_zfs.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/collectors/proc.plugin/proc_spl_kstat_zfs.c b/collectors/proc.plugin/proc_spl_kstat_zfs.c new file mode 100644 index 000000000..a96b236cb --- /dev/null +++ b/collectors/proc.plugin/proc_spl_kstat_zfs.c @@ -0,0 +1,155 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#include "plugin_proc.h" +#include "zfs_common.h" + +#define ZFS_PROC_ARCSTATS "/proc/spl/kstat/zfs/arcstats" + +extern struct arcstats arcstats; + +int do_proc_spl_kstat_zfs_arcstats(int update_every, usec_t dt) { + (void)dt; + + static procfile *ff = NULL; + static ARL_BASE *arl_base = NULL; + + arcstats.l2exist = -1; + + if(unlikely(!arl_base)) { + arl_base = arl_create("arcstats", NULL, 60); + + arl_expect(arl_base, "hits", &arcstats.hits); + arl_expect(arl_base, "misses", &arcstats.misses); + arl_expect(arl_base, "demand_data_hits", &arcstats.demand_data_hits); + arl_expect(arl_base, "demand_data_misses", &arcstats.demand_data_misses); + arl_expect(arl_base, "demand_metadata_hits", &arcstats.demand_metadata_hits); + arl_expect(arl_base, "demand_metadata_misses", &arcstats.demand_metadata_misses); + arl_expect(arl_base, "prefetch_data_hits", &arcstats.prefetch_data_hits); + arl_expect(arl_base, "prefetch_data_misses", &arcstats.prefetch_data_misses); + arl_expect(arl_base, "prefetch_metadata_hits", &arcstats.prefetch_metadata_hits); + arl_expect(arl_base, "prefetch_metadata_misses", &arcstats.prefetch_metadata_misses); + arl_expect(arl_base, "mru_hits", &arcstats.mru_hits); + arl_expect(arl_base, "mru_ghost_hits", &arcstats.mru_ghost_hits); + arl_expect(arl_base, "mfu_hits", &arcstats.mfu_hits); + arl_expect(arl_base, "mfu_ghost_hits", &arcstats.mfu_ghost_hits); + arl_expect(arl_base, "deleted", &arcstats.deleted); + arl_expect(arl_base, "mutex_miss", &arcstats.mutex_miss); + arl_expect(arl_base, "evict_skip", &arcstats.evict_skip); + arl_expect(arl_base, "evict_not_enough", &arcstats.evict_not_enough); + arl_expect(arl_base, "evict_l2_cached", &arcstats.evict_l2_cached); + arl_expect(arl_base, "evict_l2_eligible", &arcstats.evict_l2_eligible); + arl_expect(arl_base, "evict_l2_ineligible", &arcstats.evict_l2_ineligible); + arl_expect(arl_base, "evict_l2_skip", &arcstats.evict_l2_skip); + arl_expect(arl_base, "hash_elements", &arcstats.hash_elements); + arl_expect(arl_base, "hash_elements_max", &arcstats.hash_elements_max); + arl_expect(arl_base, "hash_collisions", &arcstats.hash_collisions); + arl_expect(arl_base, "hash_chains", &arcstats.hash_chains); + arl_expect(arl_base, "hash_chain_max", &arcstats.hash_chain_max); + arl_expect(arl_base, "p", &arcstats.p); + arl_expect(arl_base, "c", &arcstats.c); + arl_expect(arl_base, "c_min", &arcstats.c_min); + arl_expect(arl_base, "c_max", &arcstats.c_max); + arl_expect(arl_base, "size", &arcstats.size); + arl_expect(arl_base, "hdr_size", &arcstats.hdr_size); + arl_expect(arl_base, "data_size", &arcstats.data_size); + arl_expect(arl_base, "metadata_size", &arcstats.metadata_size); + arl_expect(arl_base, "other_size", &arcstats.other_size); + arl_expect(arl_base, "anon_size", &arcstats.anon_size); + arl_expect(arl_base, "anon_evictable_data", &arcstats.anon_evictable_data); + arl_expect(arl_base, "anon_evictable_metadata", &arcstats.anon_evictable_metadata); + arl_expect(arl_base, "mru_size", &arcstats.mru_size); + arl_expect(arl_base, "mru_evictable_data", &arcstats.mru_evictable_data); + arl_expect(arl_base, "mru_evictable_metadata", &arcstats.mru_evictable_metadata); + arl_expect(arl_base, "mru_ghost_size", &arcstats.mru_ghost_size); + arl_expect(arl_base, "mru_ghost_evictable_data", &arcstats.mru_ghost_evictable_data); + arl_expect(arl_base, "mru_ghost_evictable_metadata", &arcstats.mru_ghost_evictable_metadata); + arl_expect(arl_base, "mfu_size", &arcstats.mfu_size); + arl_expect(arl_base, "mfu_evictable_data", &arcstats.mfu_evictable_data); + arl_expect(arl_base, "mfu_evictable_metadata", &arcstats.mfu_evictable_metadata); + arl_expect(arl_base, "mfu_ghost_size", &arcstats.mfu_ghost_size); + arl_expect(arl_base, "mfu_ghost_evictable_data", &arcstats.mfu_ghost_evictable_data); + arl_expect(arl_base, "mfu_ghost_evictable_metadata", &arcstats.mfu_ghost_evictable_metadata); + arl_expect(arl_base, "l2_hits", &arcstats.l2_hits); + arl_expect(arl_base, "l2_misses", &arcstats.l2_misses); + arl_expect(arl_base, "l2_feeds", &arcstats.l2_feeds); + arl_expect(arl_base, "l2_rw_clash", &arcstats.l2_rw_clash); + arl_expect(arl_base, "l2_read_bytes", &arcstats.l2_read_bytes); + arl_expect(arl_base, "l2_write_bytes", &arcstats.l2_write_bytes); + arl_expect(arl_base, "l2_writes_sent", &arcstats.l2_writes_sent); + arl_expect(arl_base, "l2_writes_done", &arcstats.l2_writes_done); + arl_expect(arl_base, "l2_writes_error", &arcstats.l2_writes_error); + arl_expect(arl_base, "l2_writes_lock_retry", &arcstats.l2_writes_lock_retry); + arl_expect(arl_base, "l2_evict_lock_retry", &arcstats.l2_evict_lock_retry); + arl_expect(arl_base, "l2_evict_reading", &arcstats.l2_evict_reading); + arl_expect(arl_base, "l2_evict_l1cached", &arcstats.l2_evict_l1cached); + arl_expect(arl_base, "l2_free_on_write", &arcstats.l2_free_on_write); + arl_expect(arl_base, "l2_cdata_free_on_write", &arcstats.l2_cdata_free_on_write); + arl_expect(arl_base, "l2_abort_lowmem", &arcstats.l2_abort_lowmem); + arl_expect(arl_base, "l2_cksum_bad", &arcstats.l2_cksum_bad); + arl_expect(arl_base, "l2_io_error", &arcstats.l2_io_error); + arl_expect(arl_base, "l2_size", &arcstats.l2_size); + arl_expect(arl_base, "l2_asize", &arcstats.l2_asize); + arl_expect(arl_base, "l2_hdr_size", &arcstats.l2_hdr_size); + arl_expect(arl_base, "l2_compress_successes", &arcstats.l2_compress_successes); + arl_expect(arl_base, "l2_compress_zeros", &arcstats.l2_compress_zeros); + arl_expect(arl_base, "l2_compress_failures", &arcstats.l2_compress_failures); + arl_expect(arl_base, "memory_throttle_count", &arcstats.memory_throttle_count); + arl_expect(arl_base, "duplicate_buffers", &arcstats.duplicate_buffers); + arl_expect(arl_base, "duplicate_buffers_size", &arcstats.duplicate_buffers_size); + arl_expect(arl_base, "duplicate_reads", &arcstats.duplicate_reads); + arl_expect(arl_base, "memory_direct_count", &arcstats.memory_direct_count); + arl_expect(arl_base, "memory_indirect_count", &arcstats.memory_indirect_count); + arl_expect(arl_base, "arc_no_grow", &arcstats.arc_no_grow); + arl_expect(arl_base, "arc_tempreserve", &arcstats.arc_tempreserve); + arl_expect(arl_base, "arc_loaned_bytes", &arcstats.arc_loaned_bytes); + arl_expect(arl_base, "arc_prune", &arcstats.arc_prune); + arl_expect(arl_base, "arc_meta_used", &arcstats.arc_meta_used); + arl_expect(arl_base, "arc_meta_limit", &arcstats.arc_meta_limit); + arl_expect(arl_base, "arc_meta_max", &arcstats.arc_meta_max); + arl_expect(arl_base, "arc_meta_min", &arcstats.arc_meta_min); + arl_expect(arl_base, "arc_need_free", &arcstats.arc_need_free); + arl_expect(arl_base, "arc_sys_free", &arcstats.arc_sys_free); + } + + if(unlikely(!ff)) { + char filename[FILENAME_MAX + 1]; + snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, ZFS_PROC_ARCSTATS); + ff = procfile_open(config_get("plugin:proc:" ZFS_PROC_ARCSTATS, "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT); + if(unlikely(!ff)) + return 1; + } + + ff = procfile_readall(ff); + if(unlikely(!ff)) + return 0; // we return 0, so that we will retry to open it next time + + size_t lines = procfile_lines(ff), l; + + arl_begin(arl_base); + + for(l = 0; l < lines ;l++) { + size_t words = procfile_linewords(ff, l); + if(unlikely(words < 3)) { + if(unlikely(words)) error("Cannot read " ZFS_PROC_ARCSTATS " line %zu. Expected 3 params, read %zu.", l, words); + continue; + } + + const char *key = procfile_lineword(ff, l, 0); + const char *value = procfile_lineword(ff, l, 2); + + if(unlikely(arcstats.l2exist == -1)) { + if(key[0] == 'l' && key[1] == '2' && key[2] == '_') + arcstats.l2exist = 1; + } + + if(unlikely(arl_check(arl_base, key, value))) break; + } + + if(unlikely(arcstats.l2exist == -1)) + arcstats.l2exist = 0; + + generate_charts_arcstats(PLUGIN_PROC_NAME, ZFS_PROC_ARCSTATS, update_every); + generate_charts_arc_summary(PLUGIN_PROC_NAME, ZFS_PROC_ARCSTATS, update_every); + + return 0; +} |