('binary' encoding is not supported, stored as-is) [:~]# zfs-stats -a ------------------------------------------------------------------------ ZFS Subsystem Report Tue Oct 15 16:48:43 2013 ------------------------------------------------------------------------ System Information: Kernel Version: 1000051 (osreldate) Hardware Platform: amd64 Processor Architecture: amd64 ZFS Storage pool Version: 5000 ZFS Filesystem Version: 5 FreeBSD 10.0-CURRENT #3 r255173: Fri Oct 11 17:15:50 EEST 2013 root 16:48 up 16:27, 1 user, load averages: 12,58 12,51 14,44 ------------------------------------------------------------------------ System Memory: 15.05% 18.76 GiB Active, 0.05% 61.38 MiB Inact 83.42% 103.98 GiB Wired, 0.55% 702.44 MiB Cache 0.92% 1.14 GiB Free, 0.01% 16.93 MiB Gap Real Installed: 128.00 GiB Real Available: 99.96% 127.95 GiB Real Managed: 97.41% 124.65 GiB Logical Total: 128.00 GiB Logical Used: 98.52% 126.11 GiB Logical Free: 1.48% 1.89 GiB Kernel Memory: 91.00 GiB Data: 99.99% 90.99 GiB Text: 0.01% 13.06 MiB Kernel Memory Map: 124.65 GiB Size: 69.88% 87.11 GiB Free: 30.12% 37.54 GiB ------------------------------------------------------------------------ ARC Summary: (HEALTHY) Memory Throttle Count: 0 ARC Misc: Deleted: 30.38m Recycle Misses: 25.16m Mutex Misses: 7.45m Evict Skips: 444.42m ARC Size: 100.00% 90.00 GiB Target Size: (Adaptive) 100.00% 90.00 GiB Min Size (Hard Limit): 44.44% 40.00 GiB Max Size (High Water): 2:1 90.00 GiB ARC Size Breakdown: Recently Used Cache Size: 92.69% 83.42 GiB Frequently Used Cache Size: 7.31% 6.58 GiB ARC Hash Breakdown: Elements Max: 14.59m Elements Current: 99.70% 14.54m Collisions: 71.31m Chain Max: 25 Chains: 2.08m ------------------------------------------------------------------------ ARC Efficiency: 1.11b Cache Hit Ratio: 93.89% 1.04b Cache Miss Ratio: 6.11% 67.70m Actual Hit Ratio: 91.73% 1.02b Data Demand Efficiency: 90.56% 294.97m Data Prefetch Efficiency: 9.64% 7.07m CACHE HITS BY CACHE LIST: Most Recently Used: 8.80% 91.66m Most Frequently Used: 88.89% 925.41m Most Recently Used Ghost: 0.50% 5.16m Most Frequently Used Ghost: 2.97% 30.95m CACHE HITS BY DATA TYPE: Demand Data: 25.66% 267.11m Prefetch Data: 0.07% 681.36k Demand Metadata: 72.04% 749.94m Prefetch Metadata: 2.24% 23.31m CACHE MISSES BY DATA TYPE: Demand Data: 41.15% 27.86m Prefetch Data: 9.43% 6.38m Demand Metadata: 48.71% 32.98m Prefetch Metadata: 0.71% 478.11k ------------------------------------------------------------------------ L2 ARC Summary: (HEALTHY) Passed Headroom: 1.38m Tried Lock Failures: 403.24m IO In Progress: 1.19k Low Memory Aborts: 6 Free on Write: 1.69m Writes While Full: 3.48k R/W Clashes: 608.58k Bad Checksums: 0 IO Errors: 0 SPA Mismatch: 321.48m L2 ARC Size: (Adaptive) 268.26 GiB Header Size: 0.85% 2.27 GiB L2 ARC Breakdown: 67.70m Hit Ratio: 54.97% 37.21m Miss Ratio: 45.03% 30.48m Feeds: 62.45k L2 ARC Buffer: Bytes Scanned: 531.83 TiB Buffer Iterations: 62.45k List Iterations: 3.96m NULL List Iterations: 334.83k L2 ARC Writes: Writes Sent: 100.00% 61.84k ------------------------------------------------------------------------ File-Level Prefetch: (HEALTHY) DMU Efficiency: 1.66b Hit Ratio: 52.82% 874.41m Miss Ratio: 47.18% 780.96m Colinear: 780.96m Hit Ratio: 0.00% 9.21k Miss Ratio: 100.00% 780.95m Stride: 871.48m Hit Ratio: 99.63% 868.25m Miss Ratio: 0.37% 3.22m DMU Misc: Reclaim: 780.95m Successes: 0.42% 3.27m Failures: 99.58% 777.68m Streams: 6.12m +Resets: 0.87% 53.59k -Resets: 99.13% 6.07m Bogus: 0 ------------------------------------------------------------------------ VDEV Cache Summary: 8.17m Hit Ratio: 25.98% 2.12m Miss Ratio: 73.37% 6.00m Delegations: 0.66% 53.76k ------------------------------------------------------------------------ ZFS Tunables (sysctl): kern.maxusers 8525 vm.kmem_size 133836881920 vm.kmem_size_scale 1 vm.kmem_size_min 0 vm.kmem_size_max 1319413950874 vfs.zfs.arc_max 96636764160 vfs.zfs.arc_min 42949672960 vfs.zfs.arc_meta_used 17673106536 vfs.zfs.arc_meta_limit 5368709120 vfs.zfs.l2arc_write_max 25000000 vfs.zfs.l2arc_write_boost 50000000 vfs.zfs.l2arc_headroom 2 vfs.zfs.l2arc_feed_secs 1 vfs.zfs.l2arc_feed_min_ms 200 vfs.zfs.l2arc_noprefetch 1 vfs.zfs.l2arc_feed_again 1 vfs.zfs.l2arc_norw 1 vfs.zfs.anon_size 99774976 vfs.zfs.anon_metadata_lsize 0 vfs.zfs.anon_data_lsize 0 vfs.zfs.mru_size 87902746112 vfs.zfs.mru_metadata_lsize 1672704 vfs.zfs.mru_data_lsize 78890405888 vfs.zfs.mru_ghost_size 8778126848 vfs.zfs.mru_ghost_metadata_lsize 8681146368 vfs.zfs.mru_ghost_data_lsize 96980480 vfs.zfs.mfu_size 1736881152 vfs.zfs.mfu_metadata_lsize 10414592 vfs.zfs.mfu_data_lsize 2311168 vfs.zfs.mfu_ghost_size 87868106240 vfs.zfs.mfu_ghost_metadata_lsize 11637033472 vfs.zfs.mfu_ghost_data_lsize 76230990848 vfs.zfs.l2c_only_size 254670908416 vfs.zfs.dedup.prefetch 1 vfs.zfs.nopwrite_enabled 1 vfs.zfs.mdcomp_disable 0 vfs.zfs.no_write_throttle 0 vfs.zfs.write_limit_shift 3 vfs.zfs.write_limit_min 134217728 vfs.zfs.write_limit_max 17173743104 vfs.zfs.write_limit_inflated 412169834496 vfs.zfs.write_limit_override 8589934592 vfs.zfs.prefetch_disable 1 vfs.zfs.zfetch.max_streams 8 vfs.zfs.zfetch.min_sec_reap 2 vfs.zfs.zfetch.block_cap 256 vfs.zfs.zfetch.array_rd_sz 1048576 vfs.zfs.top_maxinflight 32 vfs.zfs.resilver_delay 2 vfs.zfs.scrub_delay 4 vfs.zfs.scan_idle 50 vfs.zfs.scan_min_time_ms 1000 vfs.zfs.free_min_time_ms 1000 vfs.zfs.resilver_min_time_ms 3000 vfs.zfs.no_scrub_io 0 vfs.zfs.no_scrub_prefetch 0 vfs.zfs.mg_alloc_failures 18 vfs.zfs.write_to_degraded 0 vfs.zfs.check_hostid 1 vfs.zfs.recover 0 vfs.zfs.deadman_synctime 1000 vfs.zfs.deadman_enabled 1 vfs.zfs.space_map_last_hope 0 vfs.zfs.txg.synctime_ms 1000 vfs.zfs.txg.timeout 5 vfs.zfs.vdev.cache.max 16384 vfs.zfs.vdev.cache.size 16777216 vfs.zfs.vdev.cache.bshift 14 vfs.zfs.vdev.trim_on_init 1 vfs.zfs.vdev.max_pending 200 vfs.zfs.vdev.min_pending 4 vfs.zfs.vdev.time_shift 29 vfs.zfs.vdev.ramp_rate 2 vfs.zfs.vdev.aggregation_limit 268435456 vfs.zfs.vdev.read_gap_limit 32768 vfs.zfs.vdev.write_gap_limit 4096 vfs.zfs.vdev.bio_flush_disable 0 vfs.zfs.vdev.bio_delete_disable 0 vfs.zfs.vdev.trim_max_bytes 2147483648 vfs.zfs.vdev.trim_max_pending 64 vfs.zfs.max_auto_ashift 13 vfs.zfs.zil_replay_disable 0 vfs.zfs.cache_flush_disable 0 vfs.zfs.zio.use_uma 0 vfs.zfs.zio.exclude_metadata 0 vfs.zfs.sync_pass_deferred_free 2 vfs.zfs.sync_pass_dont_compress 5 vfs.zfs.sync_pass_rewrite 2 vfs.zfs.snapshot_list_prefetch 0 vfs.zfs.super_owner 0 vfs.zfs.debug 0 vfs.zfs.version.ioctl 3 vfs.zfs.version.acl 1 vfs.zfs.version.spa 5000 vfs.zfs.version.zpl 5 vfs.zfs.trim.enabled 1 vfs.zfs.trim.txg_delay 32 vfs.zfs.trim.timeout 30 vfs.zfs.trim.max_interval 1 ------------------------------------------------------------------------ > On 2013-10-15 07:53, Dmitriy Makarov wrote: > > Please, any idea, thougth, help! > > Maybe what information can be useful for diggin - anything... > > > > System what I'm talkin about has a huge problem: performance degradation in short time period (day-two). Don't know can we somehow relate this vmstat fails with degradation. > > > > > > > >> Hi all > >> > >> On CURRENT r255173 we have some interesting values from vmstat -z : REQ = FAIL > >> > >> [server]# vmstat -z > >> ITEM SIZE LIMIT USED FREE REQ FAIL SLEEP > >> ....... skipped.... > >> NCLNODE: 528, 0, 0, 0, 0, 0, 0 > >> space_seg_cache: 64, 0, 289198, 299554,25932081,25932081, 0 > >> zio_cache: 944, 0, 37512, 50124,1638254119,1638254119, 0 > >> zio_link_cache: 48, 0, 50955, 38104,1306418638,1306418638, 0 > >> sa_cache: 80, 0, 63694, 56, 198643,198643, 0 > >> dnode_t: 864, 0, 128813, 3, 184863,184863, 0 > >> dmu_buf_impl_t: 224, 0, 1610024, 314631,157119686,157119686, 0 > >> arc_buf_hdr_t: 216, 0,82949975, 56107,156352659,156352659, 0 > >> arc_buf_t: 72, 0, 1586866, 314374,158076670,158076670, 0 > >> zil_lwb_cache: 192, 0, 6354, 7526, 2486242,2486242, 0 > >> zfs_znode_cache: 368, 0, 63694, 16, 198643,198643, 0 > >> ..... skipped ...... > >> > >> Can anybody explain this strange failures in zfs related parameters in vmstat, can we do something with this and is this really bad signal? > >> > >> Thanks! > > > > _______________________________________________ > > freebsd-current at freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-current > > To unsubscribe, send any mail to "freebsd-current-unsubscribe at freebsd.org" > I am guessing those 'failures' are failures to allocate memory. I'd > recommend you install sysutils/zfs-stats and send the list the output of > 'zfs-stats -a' > > -- > Allan Jude Received on Tue Oct 15 2013 - 11:52:22 UTC
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