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zfs_common.c
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// SPDX-License-Identifier: GPL-3.0-or-later
#include "zfs_common.h"
struct arcstats arcstats = { 0 };
void generate_charts_arcstats(const char *plugin, const char *module, int update_every) {
// ARC reads
unsigned long long aread = arcstats.hits + arcstats.misses;
// Demand reads
unsigned long long dhit = arcstats.demand_data_hits + arcstats.demand_metadata_hits;
unsigned long long dmiss = arcstats.demand_data_misses + arcstats.demand_metadata_misses;
unsigned long long dread = dhit + dmiss;
// Prefetch reads
unsigned long long phit = arcstats.prefetch_data_hits + arcstats.prefetch_metadata_hits;
unsigned long long pmiss = arcstats.prefetch_data_misses + arcstats.prefetch_metadata_misses;
unsigned long long pread = phit + pmiss;
// Metadata reads
unsigned long long mhit = arcstats.prefetch_metadata_hits + arcstats.demand_metadata_hits;
unsigned long long mmiss = arcstats.prefetch_metadata_misses + arcstats.demand_metadata_misses;
unsigned long long mread = mhit + mmiss;
// l2 reads
unsigned long long l2hit = arcstats.l2_hits;
unsigned long long l2miss = arcstats.l2_misses;
unsigned long long l2read = l2hit + l2miss;
// --------------------------------------------------------------------
{
static RRDSET *st_arc_size = NULL;
static RRDDIM *rd_arc_size = NULL;
static RRDDIM *rd_arc_target_size = NULL;
static RRDDIM *rd_arc_target_min_size = NULL;
static RRDDIM *rd_arc_target_max_size = NULL;
if (unlikely(!st_arc_size)) {
st_arc_size = rrdset_create_localhost(
"zfs"
, "arc_size"
, NULL
, ZFS_FAMILY_SIZE
, NULL
, "ZFS ARC Size"
, "MiB"
, plugin
, module
, NETDATA_CHART_PRIO_ZFS_ARC_SIZE
, update_every
, RRDSET_TYPE_AREA
);
rd_arc_size = rrddim_add(st_arc_size, "size", "arcsz", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
rd_arc_target_size = rrddim_add(st_arc_size, "target", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
rd_arc_target_min_size = rrddim_add(st_arc_size, "min", "min (hard limit)", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
rd_arc_target_max_size = rrddim_add(st_arc_size, "max", "max (high water)", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
}
else
rrdset_next(st_arc_size);
rrddim_set_by_pointer(st_arc_size, rd_arc_size, arcstats.size);
rrddim_set_by_pointer(st_arc_size, rd_arc_target_size, arcstats.c);
rrddim_set_by_pointer(st_arc_size, rd_arc_target_min_size, arcstats.c_min);
rrddim_set_by_pointer(st_arc_size, rd_arc_target_max_size, arcstats.c_max);
rrdset_done(st_arc_size);
}
// --------------------------------------------------------------------
if(likely(arcstats.l2exist)) {
static RRDSET *st_l2_size = NULL;
static RRDDIM *rd_l2_size = NULL;
static RRDDIM *rd_l2_asize = NULL;
if (unlikely(!st_l2_size)) {
st_l2_size = rrdset_create_localhost(
"zfs"
, "l2_size"
, NULL
, ZFS_FAMILY_SIZE
, NULL
, "ZFS L2 ARC Size"
, "MiB"
, plugin
, module
, NETDATA_CHART_PRIO_ZFS_L2_SIZE
, update_every
, RRDSET_TYPE_AREA
);
rd_l2_asize = rrddim_add(st_l2_size, "actual", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
rd_l2_size = rrddim_add(st_l2_size, "size", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
}
else
rrdset_next(st_l2_size);
rrddim_set_by_pointer(st_l2_size, rd_l2_size, arcstats.l2_size);
rrddim_set_by_pointer(st_l2_size, rd_l2_asize, arcstats.l2_asize);
rrdset_done(st_l2_size);
}
// --------------------------------------------------------------------
{
static RRDSET *st_reads = NULL;
static RRDDIM *rd_aread = NULL;
static RRDDIM *rd_dread = NULL;
static RRDDIM *rd_pread = NULL;
static RRDDIM *rd_mread = NULL;
static RRDDIM *rd_l2read = NULL;
if (unlikely(!st_reads)) {
st_reads = rrdset_create_localhost(
"zfs"
, "reads"
, NULL
, ZFS_FAMILY_ACCESSES
, NULL
, "ZFS Reads"
, "reads/s"
, plugin
, module
, NETDATA_CHART_PRIO_ZFS_READS
, update_every
, RRDSET_TYPE_AREA
);
rd_aread = rrddim_add(st_reads, "areads", "arc", 1, 1, RRD_ALGORITHM_INCREMENTAL);
rd_dread = rrddim_add(st_reads, "dreads", "demand", 1, 1, RRD_ALGORITHM_INCREMENTAL);
rd_pread = rrddim_add(st_reads, "preads", "prefetch", 1, 1, RRD_ALGORITHM_INCREMENTAL);
rd_mread = rrddim_add(st_reads, "mreads", "metadata", 1, 1, RRD_ALGORITHM_INCREMENTAL);
if(arcstats.l2exist)
rd_l2read = rrddim_add(st_reads, "l2reads", "l2", 1, 1, RRD_ALGORITHM_INCREMENTAL);
}
else
rrdset_next(st_reads);
rrddim_set_by_pointer(st_reads, rd_aread, aread);
rrddim_set_by_pointer(st_reads, rd_dread, dread);
rrddim_set_by_pointer(st_reads, rd_pread, pread);
rrddim_set_by_pointer(st_reads, rd_mread, mread);
if(arcstats.l2exist)
rrddim_set_by_pointer(st_reads, rd_l2read, l2read);
rrdset_done(st_reads);
}
// --------------------------------------------------------------------
if(likely(arcstats.l2exist)) {
static RRDSET *st_l2bytes = NULL;
static RRDDIM *rd_l2_read_bytes = NULL;
static RRDDIM *rd_l2_write_bytes = NULL;
if (unlikely(!st_l2bytes)) {
st_l2bytes = rrdset_create_localhost(
"zfs"
, "bytes"
, NULL
, ZFS_FAMILY_ACCESSES
, NULL
, "ZFS ARC L2 Read/Write Rate"
, "KiB/s"
, plugin
, module
, NETDATA_CHART_PRIO_ZFS_IO
, update_every
, RRDSET_TYPE_AREA
);
rd_l2_read_bytes = rrddim_add(st_l2bytes, "read", NULL, 1, 1024, RRD_ALGORITHM_INCREMENTAL);
rd_l2_write_bytes = rrddim_add(st_l2bytes, "write", NULL, -1, 1024, RRD_ALGORITHM_INCREMENTAL);
}
else
rrdset_next(st_l2bytes);
rrddim_set_by_pointer(st_l2bytes, rd_l2_read_bytes, arcstats.l2_read_bytes);
rrddim_set_by_pointer(st_l2bytes, rd_l2_write_bytes, arcstats.l2_write_bytes);
rrdset_done(st_l2bytes);
}
// --------------------------------------------------------------------
{
static RRDSET *st_ahits = NULL;
static RRDDIM *rd_ahits = NULL;
static RRDDIM *rd_amisses = NULL;
if (unlikely(!st_ahits)) {
st_ahits = rrdset_create_localhost(
"zfs"
, "hits"
, NULL
, ZFS_FAMILY_EFFICIENCY
, NULL
, "ZFS ARC Hits"
, "percentage"
, plugin
, module
, NETDATA_CHART_PRIO_ZFS_HITS
, update_every
, RRDSET_TYPE_STACKED
);
rd_ahits = rrddim_add(st_ahits, "hits", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
rd_amisses = rrddim_add(st_ahits, "misses", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
}
else
rrdset_next(st_ahits);
rrddim_set_by_pointer(st_ahits, rd_ahits, arcstats.hits);
rrddim_set_by_pointer(st_ahits, rd_amisses, arcstats.misses);
rrdset_done(st_ahits);
}
// --------------------------------------------------------------------
{
static RRDSET *st_dhits = NULL;
static RRDDIM *rd_dhits = NULL;
static RRDDIM *rd_dmisses = NULL;
if (unlikely(!st_dhits)) {
st_dhits = rrdset_create_localhost(
"zfs"
, "dhits"
, NULL
, ZFS_FAMILY_EFFICIENCY
, NULL
, "ZFS Demand Hits"
, "percentage"
, plugin
, module
, NETDATA_CHART_PRIO_ZFS_DHITS
, update_every
, RRDSET_TYPE_STACKED
);
rd_dhits = rrddim_add(st_dhits, "hits", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
rd_dmisses = rrddim_add(st_dhits, "misses", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
}
else
rrdset_next(st_dhits);
rrddim_set_by_pointer(st_dhits, rd_dhits, dhit);
rrddim_set_by_pointer(st_dhits, rd_dmisses, dmiss);
rrdset_done(st_dhits);
}
// --------------------------------------------------------------------
{
static RRDSET *st_phits = NULL;
static RRDDIM *rd_phits = NULL;
static RRDDIM *rd_pmisses = NULL;
if (unlikely(!st_phits)) {
st_phits = rrdset_create_localhost(
"zfs"
, "phits"
, NULL
, ZFS_FAMILY_EFFICIENCY
, NULL
, "ZFS Prefetch Hits"
, "percentage"
, plugin
, module
, NETDATA_CHART_PRIO_ZFS_PHITS
, update_every
, RRDSET_TYPE_STACKED
);
rd_phits = rrddim_add(st_phits, "hits", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
rd_pmisses = rrddim_add(st_phits, "misses", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
}
else
rrdset_next(st_phits);
rrddim_set_by_pointer(st_phits, rd_phits, phit);
rrddim_set_by_pointer(st_phits, rd_pmisses, pmiss);
rrdset_done(st_phits);
}
// --------------------------------------------------------------------
{
static RRDSET *st_mhits = NULL;
static RRDDIM *rd_mhits = NULL;
static RRDDIM *rd_mmisses = NULL;
if (unlikely(!st_mhits)) {
st_mhits = rrdset_create_localhost(
"zfs"
, "mhits"
, NULL
, ZFS_FAMILY_EFFICIENCY
, NULL
, "ZFS Metadata Hits"
, "percentage"
, plugin
, module
, NETDATA_CHART_PRIO_ZFS_MHITS
, update_every
, RRDSET_TYPE_STACKED
);
rd_mhits = rrddim_add(st_mhits, "hits", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
rd_mmisses = rrddim_add(st_mhits, "misses", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
}
else
rrdset_next(st_mhits);
rrddim_set_by_pointer(st_mhits, rd_mhits, mhit);
rrddim_set_by_pointer(st_mhits, rd_mmisses, mmiss);
rrdset_done(st_mhits);
}
// --------------------------------------------------------------------
if(likely(arcstats.l2exist)) {
static RRDSET *st_l2hits = NULL;
static RRDDIM *rd_l2hits = NULL;
static RRDDIM *rd_l2misses = NULL;
if (unlikely(!st_l2hits)) {
st_l2hits = rrdset_create_localhost(
"zfs"
, "l2hits"
, NULL
, ZFS_FAMILY_EFFICIENCY
, NULL
, "ZFS L2 Hits"
, "percentage"
, plugin
, module
, NETDATA_CHART_PRIO_ZFS_L2HITS
, update_every
, RRDSET_TYPE_STACKED
);
rd_l2hits = rrddim_add(st_l2hits, "hits", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
rd_l2misses = rrddim_add(st_l2hits, "misses", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
}
else
rrdset_next(st_l2hits);
rrddim_set_by_pointer(st_l2hits, rd_l2hits, l2hit);
rrddim_set_by_pointer(st_l2hits, rd_l2misses, l2miss);
rrdset_done(st_l2hits);
}
// --------------------------------------------------------------------
{
static RRDSET *st_list_hits = NULL;
static RRDDIM *rd_mfu = NULL;
static RRDDIM *rd_mru = NULL;
static RRDDIM *rd_mfug = NULL;
static RRDDIM *rd_mrug = NULL;
if (unlikely(!st_list_hits)) {
st_list_hits = rrdset_create_localhost(
"zfs"
, "list_hits"
, NULL
, ZFS_FAMILY_EFFICIENCY
, NULL
, "ZFS List Hits"
, "hits/s"
, plugin
, module
, NETDATA_CHART_PRIO_ZFS_LIST_HITS
, update_every
, RRDSET_TYPE_AREA
);
rd_mfu = rrddim_add(st_list_hits, "mfu", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
rd_mfug = rrddim_add(st_list_hits, "mfug", "mfu ghost", 1, 1, RRD_ALGORITHM_INCREMENTAL);
rd_mru = rrddim_add(st_list_hits, "mru", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
rd_mrug = rrddim_add(st_list_hits, "mrug", "mru ghost", 1, 1, RRD_ALGORITHM_INCREMENTAL);
}
else
rrdset_next(st_list_hits);
rrddim_set_by_pointer(st_list_hits, rd_mfu, arcstats.mfu_hits);
rrddim_set_by_pointer(st_list_hits, rd_mru, arcstats.mru_hits);
rrddim_set_by_pointer(st_list_hits, rd_mfug, arcstats.mfu_ghost_hits);
rrddim_set_by_pointer(st_list_hits, rd_mrug, arcstats.mru_ghost_hits);
rrdset_done(st_list_hits);
}
}
void generate_charts_arc_summary(const char *plugin, const char *module, int update_every) {
unsigned long long arc_accesses_total = arcstats.hits + arcstats.misses;
unsigned long long real_hits = arcstats.mfu_hits + arcstats.mru_hits;
unsigned long long real_misses = arc_accesses_total - real_hits;
//unsigned long long anon_hits = arcstats.hits - (arcstats.mfu_hits + arcstats.mru_hits + arcstats.mfu_ghost_hits + arcstats.mru_ghost_hits);
unsigned long long arc_size = arcstats.size;
unsigned long long mru_size = arcstats.p;
//unsigned long long target_min_size = arcstats.c_min;
//unsigned long long target_max_size = arcstats.c_max;
unsigned long long target_size = arcstats.c;
//unsigned long long target_size_ratio = (target_max_size / target_min_size);
unsigned long long mfu_size;
if(arc_size > target_size)
mfu_size = arc_size - mru_size;
else
mfu_size = target_size - mru_size;
// --------------------------------------------------------------------
{
static RRDSET *st_arc_size_breakdown = NULL;
static RRDDIM *rd_most_recent = NULL;
static RRDDIM *rd_most_frequent = NULL;
if (unlikely(!st_arc_size_breakdown)) {
st_arc_size_breakdown = rrdset_create_localhost(
"zfs"
, "arc_size_breakdown"
, NULL
, ZFS_FAMILY_EFFICIENCY
, NULL
, "ZFS ARC Size Breakdown"
, "percentage"
, plugin
, module
, NETDATA_CHART_PRIO_ZFS_ARC_SIZE_BREAKDOWN
, update_every
, RRDSET_TYPE_STACKED
);
rd_most_recent = rrddim_add(st_arc_size_breakdown, "recent", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_ROW_TOTAL);
rd_most_frequent = rrddim_add(st_arc_size_breakdown, "frequent", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_ROW_TOTAL);
}
else
rrdset_next(st_arc_size_breakdown);
rrddim_set_by_pointer(st_arc_size_breakdown, rd_most_recent, mru_size);
rrddim_set_by_pointer(st_arc_size_breakdown, rd_most_frequent, mfu_size);
rrdset_done(st_arc_size_breakdown);
}
// --------------------------------------------------------------------
{
static RRDSET *st_memory = NULL;
#ifndef __FreeBSD__
static RRDDIM *rd_direct = NULL;
#endif
static RRDDIM *rd_throttled = NULL;
#ifndef __FreeBSD__
static RRDDIM *rd_indirect = NULL;
#endif
if (unlikely(!st_memory)) {
st_memory = rrdset_create_localhost(
"zfs"
, "memory_ops"
, NULL
, ZFS_FAMILY_OPERATIONS
, NULL
, "ZFS Memory Operations"
, "operations/s"
, plugin
, module
, NETDATA_CHART_PRIO_ZFS_MEMORY_OPS
, update_every
, RRDSET_TYPE_LINE
);
#ifndef __FreeBSD__
rd_direct = rrddim_add(st_memory, "direct", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
#endif
rd_throttled = rrddim_add(st_memory, "throttled", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
#ifndef __FreeBSD__
rd_indirect = rrddim_add(st_memory, "indirect", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
#endif
}
else
rrdset_next(st_memory);
#ifndef __FreeBSD__
rrddim_set_by_pointer(st_memory, rd_direct, arcstats.memory_direct_count);
#endif
rrddim_set_by_pointer(st_memory, rd_throttled, arcstats.memory_throttle_count);
#ifndef __FreeBSD__
rrddim_set_by_pointer(st_memory, rd_indirect, arcstats.memory_indirect_count);
#endif
rrdset_done(st_memory);
}
// --------------------------------------------------------------------
{
static RRDSET *st_important_ops = NULL;
static RRDDIM *rd_deleted = NULL;
static RRDDIM *rd_mutex_misses = NULL;
static RRDDIM *rd_evict_skips = NULL;
static RRDDIM *rd_hash_collisions = NULL;
if (unlikely(!st_important_ops)) {
st_important_ops = rrdset_create_localhost(
"zfs"
, "important_ops"
, NULL
, ZFS_FAMILY_OPERATIONS
, NULL
, "ZFS Important Operations"
, "operations/s"
, plugin
, module
, NETDATA_CHART_PRIO_ZFS_IMPORTANT_OPS
, update_every
, RRDSET_TYPE_LINE
);
rd_evict_skips = rrddim_add(st_important_ops, "eskip", "evict skip", 1, 1, RRD_ALGORITHM_INCREMENTAL);
rd_deleted = rrddim_add(st_important_ops, "deleted", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
rd_mutex_misses = rrddim_add(st_important_ops, "mtxmis", "mutex miss", 1, 1, RRD_ALGORITHM_INCREMENTAL);
rd_hash_collisions = rrddim_add(st_important_ops, "hash_collisions", "hash collisions", 1, 1, RRD_ALGORITHM_INCREMENTAL);
}
else
rrdset_next(st_important_ops);
rrddim_set_by_pointer(st_important_ops, rd_deleted, arcstats.deleted);
rrddim_set_by_pointer(st_important_ops, rd_evict_skips, arcstats.evict_skip);
rrddim_set_by_pointer(st_important_ops, rd_mutex_misses, arcstats.mutex_miss);
rrddim_set_by_pointer(st_important_ops, rd_hash_collisions, arcstats.hash_collisions);
rrdset_done(st_important_ops);
}
// --------------------------------------------------------------------
{
static RRDSET *st_actual_hits = NULL;
static RRDDIM *rd_actual_hits = NULL;
static RRDDIM *rd_actual_misses = NULL;
if (unlikely(!st_actual_hits)) {
st_actual_hits = rrdset_create_localhost(
"zfs"
, "actual_hits"
, NULL
, ZFS_FAMILY_EFFICIENCY
, NULL
, "ZFS Actual Cache Hits"
, "percentage"
, plugin
, module
, NETDATA_CHART_PRIO_ZFS_ACTUAL_HITS
, update_every
, RRDSET_TYPE_STACKED
);
rd_actual_hits = rrddim_add(st_actual_hits, "hits", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
rd_actual_misses = rrddim_add(st_actual_hits, "misses", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
}
else
rrdset_next(st_actual_hits);
rrddim_set_by_pointer(st_actual_hits, rd_actual_hits, real_hits);
rrddim_set_by_pointer(st_actual_hits, rd_actual_misses, real_misses);
rrdset_done(st_actual_hits);
}
// --------------------------------------------------------------------
{
static RRDSET *st_demand_data_hits = NULL;
static RRDDIM *rd_demand_data_hits = NULL;
static RRDDIM *rd_demand_data_misses = NULL;
if (unlikely(!st_demand_data_hits)) {
st_demand_data_hits = rrdset_create_localhost(
"zfs"
, "demand_data_hits"
, NULL
, ZFS_FAMILY_EFFICIENCY
, NULL
, "ZFS Data Demand Efficiency"
, "percentage"
, plugin
, module
, NETDATA_CHART_PRIO_ZFS_DEMAND_DATA_HITS
, update_every
, RRDSET_TYPE_STACKED
);
rd_demand_data_hits = rrddim_add(st_demand_data_hits, "hits", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
rd_demand_data_misses = rrddim_add(st_demand_data_hits, "misses", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
}
else
rrdset_next(st_demand_data_hits);
rrddim_set_by_pointer(st_demand_data_hits, rd_demand_data_hits, arcstats.demand_data_hits);
rrddim_set_by_pointer(st_demand_data_hits, rd_demand_data_misses, arcstats.demand_data_misses);
rrdset_done(st_demand_data_hits);
}
// --------------------------------------------------------------------
{
static RRDSET *st_prefetch_data_hits = NULL;
static RRDDIM *rd_prefetch_data_hits = NULL;
static RRDDIM *rd_prefetch_data_misses = NULL;
if (unlikely(!st_prefetch_data_hits)) {
st_prefetch_data_hits = rrdset_create_localhost(
"zfs"
, "prefetch_data_hits"
, NULL
, ZFS_FAMILY_EFFICIENCY
, NULL
, "ZFS Data Prefetch Efficiency"
, "percentage"
, plugin
, module
, NETDATA_CHART_PRIO_ZFS_PREFETCH_DATA_HITS
, update_every
, RRDSET_TYPE_STACKED
);
rd_prefetch_data_hits = rrddim_add(st_prefetch_data_hits, "hits", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
rd_prefetch_data_misses = rrddim_add(st_prefetch_data_hits, "misses", NULL, 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
}
else
rrdset_next(st_prefetch_data_hits);
rrddim_set_by_pointer(st_prefetch_data_hits, rd_prefetch_data_hits, arcstats.prefetch_data_hits);
rrddim_set_by_pointer(st_prefetch_data_hits, rd_prefetch_data_misses, arcstats.prefetch_data_misses);
rrdset_done(st_prefetch_data_hits);
}
// --------------------------------------------------------------------
{
static RRDSET *st_hash_elements = NULL;
static RRDDIM *rd_hash_elements_current = NULL;
static RRDDIM *rd_hash_elements_max = NULL;
if (unlikely(!st_hash_elements)) {
st_hash_elements = rrdset_create_localhost(
"zfs"
, "hash_elements"
, NULL
, ZFS_FAMILY_HASH
, NULL
, "ZFS ARC Hash Elements"
, "elements"
, plugin
, module
, NETDATA_CHART_PRIO_ZFS_HASH_ELEMENTS
, update_every
, RRDSET_TYPE_LINE
);
rd_hash_elements_current = rrddim_add(st_hash_elements, "current", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
rd_hash_elements_max = rrddim_add(st_hash_elements, "max", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
}
else
rrdset_next(st_hash_elements);
rrddim_set_by_pointer(st_hash_elements, rd_hash_elements_current, arcstats.hash_elements);
rrddim_set_by_pointer(st_hash_elements, rd_hash_elements_max, arcstats.hash_elements_max);
rrdset_done(st_hash_elements);
}
// --------------------------------------------------------------------
{
static RRDSET *st_hash_chains = NULL;
static RRDDIM *rd_hash_chains_current = NULL;
static RRDDIM *rd_hash_chains_max = NULL;
if (unlikely(!st_hash_chains)) {
st_hash_chains = rrdset_create_localhost(
"zfs"
, "hash_chains"
, NULL
, ZFS_FAMILY_HASH
, NULL
, "ZFS ARC Hash Chains"
, "chains"
, plugin
, module
, NETDATA_CHART_PRIO_ZFS_HASH_CHAINS
, update_every
, RRDSET_TYPE_LINE
);
rd_hash_chains_current = rrddim_add(st_hash_chains, "current", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
rd_hash_chains_max = rrddim_add(st_hash_chains, "max", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
}
else
rrdset_next(st_hash_chains);
rrddim_set_by_pointer(st_hash_chains, rd_hash_chains_current, arcstats.hash_chains);
rrddim_set_by_pointer(st_hash_chains, rd_hash_chains_max, arcstats.hash_chain_max);
rrdset_done(st_hash_chains);
}
// --------------------------------------------------------------------
}