Date: Sun, 19 Jun 2016 22:47:20 +0100 From: Steven Hartland <killing@multiplay.co.uk> To: freebsd-fs@freebsd.org Subject: Re: High CPU Interrupt using ZFS Message-ID: <48d498c8-ef9c-355b-ed5e-43ae003e8925@multiplay.co.uk> In-Reply-To: <57cfcda4-6ff7-0c2e-4f58-ad09ce7cab28@gmail.com> References: <57cfcda4-6ff7-0c2e-4f58-ad09ce7cab28@gmail.com>
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You usage levels are really high I would recommend keeping things below 80% otherwise when new data is written its much more costly to locate free space. On 19/06/2016 20:38, Kaya Saman wrote: > Hi, > > > I have a strange problem and I'm not sure if anyone has ever > experienced this to help give me some advice on how to tackle it. > > > Basically I run ZFS as root FS mirrored over two drives which are > directly connected to the SATA connectors on a SuperMicro Xeon E5 > server based MB. > > > Then I have an LSI HBA connected to the remaining disks with various > ZPOOLs. The main pool has ZIL and L2ARC enabled. > > > As the majority of data is A/V content I disabled Prefetch as > instructed in the FreeBSD tuning tips guide. > > > https://www.freebsd.org/doc/handbook/zfs.html > > > For some reason after a period of time the CPU interrupt will just got > sky high and the system will totally bog down. My home drive is > running off the "Main Pool" too and when this happens it becomes > inaccessible. > > > The system runs FBSD 10.3: 10.3-RELEASE FreeBSD 10.3-RELEASE #0 > r297264: Fri Mar 25 02:10:02 UTC 2016 > > > ZPOOL List output: > > > # zpool list > NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH > ALTROOT > ZPOOL_2 27.2T 26.3T 884G - 41% 96% 1.00x ONLINE - > ZPOOL_3 298G 248G 50.2G - 34% 83% 1.00x ONLINE - > ZPOOL_4 1.81T 1.75T 66.4G - 25% 96% 1.00x ONLINE - > ZPOOL_5 186G 171G 14.9G - 62% 92% 1.00x ONLINE - > workspaces 119G 77.7G 41.3G - 56% 65% 1.00x ONLINE - > zroot 111G 88.9G 22.1G - 70% 80% 1.00x ONLINE - > > > The system has a Xeon E5 with 24GB RAM and 16GB of Swap space. > > > I also run 5x jails on this box. > > 1x for network based monitoring (munin, zabbix etc) > > 1x DB jail which runs Postgresql and Mysql > > > + some others; they are all run off the ZRoot > > > Boot Loader info: > > > zfs_load="YES" > > kern.ipc.semmni=6000000 > kern.ipc.semmns=6000000 > kern.ipc.semmnu=256 > > net.isr.numthreads=4 > net.isr.maxthreads=4 > net.isr.bindthreads=1 > > vfs.zfs.l2arc_noprefetch=1 > > > Other information: > > > # camcontrol devlist > <ATA WDC WD20NPVX-00E 1A01> at scbus0 target 8 lun 0 (pass0,da0) > <ATA WDC WD20NPVX-00E 1A01> at scbus0 target 10 lun 0 (pass1,da1) > <ATA WDC WD20NPVX-00E 1A01> at scbus0 target 11 lun 0 (pass2,da2) > <ATA WDC WD20NPVX-00E 1A01> at scbus0 target 12 lun 0 (pass3,da3) > <LSI SAS2X36 0e12> at scbus0 target 13 lun 0 (pass4,ses0) > <ATA Corsair Force GS 5.20> at scbus0 target 14 lun 0 (pass5,da4) > <ATA Corsair Force GS 5.20> at scbus0 target 15 lun 0 (pass6,da5) > <ATA WDC WD20NPVX-00E 1A01> at scbus0 target 17 lun 0 (pass7,da6) > <ATA WDC WD20NPVX-00E 1A01> at scbus0 target 18 lun 0 (pass8,da7) > <ATA WDC WD20NPVX-00E 1A01> at scbus0 target 19 lun 0 (pass9,da8) > <ATA WDC WD20NPVX-00E 1A01> at scbus0 target 20 lun 0 (pass10,da9) > <ATA WDC WD20NPVX-00E 1A01> at scbus0 target 21 lun 0 > (pass11,da10) > <ATA WDC WD20NPVX-00E 1A01> at scbus0 target 22 lun 0 > (pass12,da11) > <ATA OCZ-VERTEX4 1.5> at scbus0 target 29 lun 0 > (pass13,da12) > <ATA ST9320423AS SDM1> at scbus0 target 30 lun 0 > (pass14,da13) > <ATA ST9200420AS A> at scbus0 target 31 lun 0 > (pass15,da14) > <ATA WDC WD20NPVX-00E 1A01> at scbus0 target 34 lun 0 > (pass16,da15) > <ATA WDC WD20NPVX-00E 1A01> at scbus0 target 35 lun 0 > (pass17,da16) > <ATA WDC WD20NPVX-00E 1A01> at scbus0 target 36 lun 0 > (pass18,da17) > <ATA WDC WD20NPVX-00E 1A01> at scbus0 target 37 lun 0 > (pass19,da18) > <ATA WDC WD20NPVX-00E 1A01> at scbus0 target 38 lun 0 > (pass20,da19) > <ATA WDC WD20NPVX-00E 1A01> at scbus0 target 40 lun 0 > (pass21,da20) > <ATA WDC WD20NPVX-00E 1A01> at scbus0 target 41 lun 0 > (pass22,da21) > <Corsair Force GS 5.41> at scbus2 target 0 lun 0 (pass23,ada0) > <Corsair Force GS 5.20> at scbus3 target 0 lun 0 (pass24,ada1) > <AHCI SGPIO Enclosure 1.00 0001> at scbus8 target 0 lun 0 (pass25,ses1) > > > Sysctl output for ZFS: > > > # sysctl -a |grep zfs > 2 PART diskid/DISK-1350790500009986007Fp2 229319956992 512 i 2 o > 10737435648 ty freebsd-zfs xs GPT xt 516e7cba-6ecf-11d6-8ff8-00022d09712b > 2 PART diskid/DISK-1350790500009986007Fp1 10737418240 512 i 1 o 17408 > ty freebsd-zfs xs GPT xt 516e7cba-6ecf-11d6-8ff8-00022d09712b > 2 PART diskid/DISK-13507905000099860071p2 229319956992 512 i 2 o > 10737435648 ty freebsd-zfs xs GPT xt 516e7cba-6ecf-11d6-8ff8-00022d09712b > 2 PART diskid/DISK-13507905000099860071p1 10735321088 512 i 1 o > 2097152 ty freebsd-zfs xs GPT xt 516e7cba-6ecf-11d6-8ff8-00022d09712b > 2 PART diskid/DISK-14067903000097960BD7p3 119445590016 512 i 3 o > 8590065664 ty freebsd-zfs xs GPT xt 516e7cba-6ecf-11d6-8ff8-00022d09712b > 1 PART ada0p3 119445590016 512 i 3 o 8590065664 ty freebsd-zfs xs GPT > xt 516e7cba-6ecf-11d6-8ff8-00022d09712b > z0xfffff80012422d00 [shape=box,label="ZFS::VDEV\nzfs::vdev\nr#4"]; > <name>zfs::vdev</name> > <type>freebsd-zfs</type> > <type>freebsd-zfs</type> > <type>freebsd-zfs</type> > <type>freebsd-zfs</type> > <type>freebsd-zfs</type> > <type>freebsd-zfs</type> > vfs.zfs.trim.max_interval: 1 > vfs.zfs.trim.timeout: 30 > vfs.zfs.trim.txg_delay: 32 > vfs.zfs.trim.enabled: 1 > vfs.zfs.vol.unmap_enabled: 1 > vfs.zfs.vol.mode: 1 > vfs.zfs.version.zpl: 5 > vfs.zfs.version.spa: 5000 > vfs.zfs.version.acl: 1 > vfs.zfs.version.ioctl: 5 > vfs.zfs.debug: 0 > vfs.zfs.super_owner: 0 > vfs.zfs.sync_pass_rewrite: 2 > vfs.zfs.sync_pass_dont_compress: 5 > vfs.zfs.sync_pass_deferred_free: 2 > vfs.zfs.zio.exclude_metadata: 0 > vfs.zfs.zio.use_uma: 1 > vfs.zfs.cache_flush_disable: 0 > vfs.zfs.zil_replay_disable: 0 > vfs.zfs.min_auto_ashift: 9 > vfs.zfs.max_auto_ashift: 13 > vfs.zfs.vdev.trim_max_pending: 10000 > vfs.zfs.vdev.bio_delete_disable: 0 > vfs.zfs.vdev.bio_flush_disable: 0 > vfs.zfs.vdev.write_gap_limit: 4096 > vfs.zfs.vdev.read_gap_limit: 32768 > vfs.zfs.vdev.aggregation_limit: 131072 > vfs.zfs.vdev.trim_max_active: 64 > vfs.zfs.vdev.trim_min_active: 1 > vfs.zfs.vdev.scrub_max_active: 2 > vfs.zfs.vdev.scrub_min_active: 1 > vfs.zfs.vdev.async_write_max_active: 10 > vfs.zfs.vdev.async_write_min_active: 1 > vfs.zfs.vdev.async_read_max_active: 3 > vfs.zfs.vdev.async_read_min_active: 1 > vfs.zfs.vdev.sync_write_max_active: 10 > vfs.zfs.vdev.sync_write_min_active: 10 > vfs.zfs.vdev.sync_read_max_active: 10 > vfs.zfs.vdev.sync_read_min_active: 10 > vfs.zfs.vdev.max_active: 1000 > vfs.zfs.vdev.async_write_active_max_dirty_percent: 60 > vfs.zfs.vdev.async_write_active_min_dirty_percent: 30 > vfs.zfs.vdev.mirror.non_rotating_seek_inc: 1 > vfs.zfs.vdev.mirror.non_rotating_inc: 0 > vfs.zfs.vdev.mirror.rotating_seek_offset: 1048576 > vfs.zfs.vdev.mirror.rotating_seek_inc: 5 > vfs.zfs.vdev.mirror.rotating_inc: 0 > vfs.zfs.vdev.trim_on_init: 1 > vfs.zfs.vdev.cache.bshift: 16 > vfs.zfs.vdev.cache.size: 0 > vfs.zfs.vdev.cache.max: 16384 > vfs.zfs.vdev.metaslabs_per_vdev: 200 > vfs.zfs.txg.timeout: 5 > vfs.zfs.space_map_blksz: 4096 > vfs.zfs.spa_slop_shift: 5 > vfs.zfs.spa_asize_inflation: 24 > vfs.zfs.deadman_enabled: 1 > vfs.zfs.deadman_checktime_ms: 5000 > vfs.zfs.deadman_synctime_ms: 1000000 > vfs.zfs.recover: 0 > vfs.zfs.spa_load_verify_data: 1 > vfs.zfs.spa_load_verify_metadata: 1 > vfs.zfs.spa_load_verify_maxinflight: 10000 > vfs.zfs.check_hostid: 1 > vfs.zfs.mg_fragmentation_threshold: 85 > vfs.zfs.mg_noalloc_threshold: 0 > vfs.zfs.condense_pct: 200 > vfs.zfs.metaslab.bias_enabled: 1 > vfs.zfs.metaslab.lba_weighting_enabled: 1 > vfs.zfs.metaslab.fragmentation_factor_enabled: 1 > vfs.zfs.metaslab.preload_enabled: 1 > vfs.zfs.metaslab.preload_limit: 3 > vfs.zfs.metaslab.unload_delay: 8 > vfs.zfs.metaslab.load_pct: 50 > vfs.zfs.metaslab.min_alloc_size: 33554432 > vfs.zfs.metaslab.df_free_pct: 4 > vfs.zfs.metaslab.df_alloc_threshold: 131072 > vfs.zfs.metaslab.debug_unload: 0 > vfs.zfs.metaslab.debug_load: 0 > vfs.zfs.metaslab.fragmentation_threshold: 70 > vfs.zfs.metaslab.gang_bang: 16777217 > vfs.zfs.free_bpobj_enabled: 1 > vfs.zfs.free_max_blocks: 18446744073709551615 > vfs.zfs.no_scrub_prefetch: 0 > vfs.zfs.no_scrub_io: 0 > vfs.zfs.resilver_min_time_ms: 3000 > vfs.zfs.free_min_time_ms: 1000 > vfs.zfs.scan_min_time_ms: 1000 > vfs.zfs.scan_idle: 50 > vfs.zfs.scrub_delay: 4 > vfs.zfs.resilver_delay: 2 > vfs.zfs.top_maxinflight: 32 > vfs.zfs.zfetch.array_rd_sz: 1048576 > vfs.zfs.zfetch.max_distance: 8388608 > vfs.zfs.zfetch.min_sec_reap: 2 > vfs.zfs.zfetch.max_streams: 8 > vfs.zfs.prefetch_disable: 0 > vfs.zfs.delay_scale: 500000 > vfs.zfs.delay_min_dirty_percent: 60 > vfs.zfs.dirty_data_sync: 67108864 > vfs.zfs.dirty_data_max_percent: 10 > vfs.zfs.dirty_data_max_max: 4294967296 > vfs.zfs.dirty_data_max: 2570453401 > vfs.zfs.max_recordsize: 1048576 > vfs.zfs.mdcomp_disable: 0 > vfs.zfs.nopwrite_enabled: 1 > vfs.zfs.dedup.prefetch: 1 > vfs.zfs.l2c_only_size: 0 > vfs.zfs.mfu_ghost_data_lsize: 3288968704 > vfs.zfs.mfu_ghost_metadata_lsize: 5136092672 > vfs.zfs.mfu_ghost_size: 8425061376 > vfs.zfs.mfu_data_lsize: 8574981632 > vfs.zfs.mfu_metadata_lsize: 68123648 > vfs.zfs.mfu_size: 8745474560 > vfs.zfs.mru_ghost_data_lsize: 5324684800 > vfs.zfs.mru_ghost_metadata_lsize: 923847680 > vfs.zfs.mru_ghost_size: 6248532480 > vfs.zfs.mru_data_lsize: 1456756224 > vfs.zfs.mru_metadata_lsize: 1278004224 > vfs.zfs.mru_size: 2862586368 > vfs.zfs.anon_data_lsize: 0 > vfs.zfs.anon_metadata_lsize: 0 > vfs.zfs.anon_size: 2841088 > vfs.zfs.l2arc_norw: 1 > vfs.zfs.l2arc_feed_again: 1 > vfs.zfs.l2arc_noprefetch: 1 > vfs.zfs.l2arc_feed_min_ms: 200 > vfs.zfs.l2arc_feed_secs: 1 > vfs.zfs.l2arc_headroom: 2 > vfs.zfs.l2arc_write_boost: 134217728 > vfs.zfs.l2arc_write_max: 67108864 > vfs.zfs.arc_meta_limit: 5979973632 > vfs.zfs.arc_free_target: 42350 > vfs.zfs.arc_shrink_shift: 7 > vfs.zfs.arc_average_blocksize: 8192 > vfs.zfs.arc_min: 2989986816 > vfs.zfs.arc_max: 23919894528 > debug.zfs_flags: 0 > kstat.zfs.misc.vdev_cache_stats.misses: 0 > kstat.zfs.misc.vdev_cache_stats.hits: 0 > kstat.zfs.misc.vdev_cache_stats.delegations: 0 > kstat.zfs.misc.arcstats.demand_hit_predictive_prefetch: 3034069 > kstat.zfs.misc.arcstats.sync_wait_for_async: 1779944 > kstat.zfs.misc.arcstats.arc_meta_min: 1494993408 > kstat.zfs.misc.arcstats.arc_meta_max: 12233249160 > kstat.zfs.misc.arcstats.arc_meta_limit: 5979973632 > kstat.zfs.misc.arcstats.arc_meta_used: 4638138472 > kstat.zfs.misc.arcstats.duplicate_reads: 1709068 > kstat.zfs.misc.arcstats.duplicate_buffers_size: 0 > kstat.zfs.misc.arcstats.duplicate_buffers: 0 > kstat.zfs.misc.arcstats.memory_throttle_count: 0 > kstat.zfs.misc.arcstats.l2_write_buffer_list_null_iter: 2200 > kstat.zfs.misc.arcstats.l2_write_buffer_list_iter: 4772510 > kstat.zfs.misc.arcstats.l2_write_buffer_bytes_scanned: 561679501832704 > kstat.zfs.misc.arcstats.l2_write_pios: 377935 > kstat.zfs.misc.arcstats.l2_write_buffer_iter: 1193136 > kstat.zfs.misc.arcstats.l2_write_full: 148 > kstat.zfs.misc.arcstats.l2_write_not_cacheable: 264598116 > kstat.zfs.misc.arcstats.l2_write_io_in_progress: 83 > kstat.zfs.misc.arcstats.l2_write_in_l2: 5284665382 > kstat.zfs.misc.arcstats.l2_write_spa_mismatch: 14626890890 > kstat.zfs.misc.arcstats.l2_write_passed_headroom: 3318575 > kstat.zfs.misc.arcstats.l2_write_trylock_fail: 6328431 > kstat.zfs.misc.arcstats.l2_compress_failures: 655251 > kstat.zfs.misc.arcstats.l2_compress_zeros: 0 > kstat.zfs.misc.arcstats.l2_compress_successes: 1205377 > kstat.zfs.misc.arcstats.l2_hdr_size: 63556704 > kstat.zfs.misc.arcstats.l2_asize: 84595239936 > kstat.zfs.misc.arcstats.l2_size: 93178570752 > kstat.zfs.misc.arcstats.l2_io_error: 0 > kstat.zfs.misc.arcstats.l2_cksum_bad: 0 > kstat.zfs.misc.arcstats.l2_abort_lowmem: 42 > kstat.zfs.misc.arcstats.l2_cdata_free_on_write: 41 > kstat.zfs.misc.arcstats.l2_free_on_write: 722 > kstat.zfs.misc.arcstats.l2_evict_l1cached: 0 > kstat.zfs.misc.arcstats.l2_evict_reading: 0 > kstat.zfs.misc.arcstats.l2_evict_lock_retry: 0 > kstat.zfs.misc.arcstats.l2_writes_lock_retry: 63 > kstat.zfs.misc.arcstats.l2_writes_error: 0 > kstat.zfs.misc.arcstats.l2_writes_done: 377935 > kstat.zfs.misc.arcstats.l2_writes_sent: 377935 > kstat.zfs.misc.arcstats.l2_write_bytes: 101118255104 > kstat.zfs.misc.arcstats.l2_read_bytes: 59571878912 > kstat.zfs.misc.arcstats.l2_rw_clash: 0 > kstat.zfs.misc.arcstats.l2_feeds: 1193136 > kstat.zfs.misc.arcstats.l2_misses: 137818470 > kstat.zfs.misc.arcstats.l2_hits: 3613135 > kstat.zfs.misc.arcstats.mfu_ghost_evictable_metadata: 5136092672 > kstat.zfs.misc.arcstats.mfu_ghost_evictable_data: 3722561024 > kstat.zfs.misc.arcstats.mfu_ghost_size: 8858653696 > kstat.zfs.misc.arcstats.mfu_evictable_metadata: 68123648 > kstat.zfs.misc.arcstats.mfu_evictable_data: 8575112704 > kstat.zfs.misc.arcstats.mfu_size: 8745605632 > kstat.zfs.misc.arcstats.mru_ghost_evictable_metadata: 923847680 > kstat.zfs.misc.arcstats.mru_ghost_evictable_data: 5324684800 > kstat.zfs.misc.arcstats.mru_ghost_size: 6248532480 > kstat.zfs.misc.arcstats.mru_evictable_metadata: 1278004224 > kstat.zfs.misc.arcstats.mru_evictable_data: 1457411584 > kstat.zfs.misc.arcstats.mru_size: 2863241728 > kstat.zfs.misc.arcstats.anon_evictable_metadata: 0 > kstat.zfs.misc.arcstats.anon_evictable_data: 0 > kstat.zfs.misc.arcstats.anon_size: 2038272 > kstat.zfs.misc.arcstats.other_size: 2797801256 > kstat.zfs.misc.arcstats.metadata_size: 1576374272 > kstat.zfs.misc.arcstats.data_size: 10034527744 > kstat.zfs.misc.arcstats.hdr_size: 200406240 > kstat.zfs.misc.arcstats.size: 14672666216 > kstat.zfs.misc.arcstats.c_max: 23919894528 > kstat.zfs.misc.arcstats.c_min: 2989986816 > kstat.zfs.misc.arcstats.c: 14673666683 > kstat.zfs.misc.arcstats.p: 8668447917 > kstat.zfs.misc.arcstats.hash_chain_max: 7 > kstat.zfs.misc.arcstats.hash_chains: 219061 > kstat.zfs.misc.arcstats.hash_collisions: 33107789 > kstat.zfs.misc.arcstats.hash_elements_max: 1529284 > kstat.zfs.misc.arcstats.hash_elements: 1529163 > kstat.zfs.misc.arcstats.evict_l2_skip: 0 > kstat.zfs.misc.arcstats.evict_l2_ineligible: 353901531136 > kstat.zfs.misc.arcstats.evict_l2_eligible: 611148992512 > kstat.zfs.misc.arcstats.evict_l2_cached: 471776311808 > kstat.zfs.misc.arcstats.evict_not_enough: 2164 > kstat.zfs.misc.arcstats.evict_skip: 232562 > kstat.zfs.misc.arcstats.mutex_miss: 17547 > kstat.zfs.misc.arcstats.deleted: 10350064 > kstat.zfs.misc.arcstats.allocated: 172235521 > kstat.zfs.misc.arcstats.mfu_ghost_hits: 8494679 > kstat.zfs.misc.arcstats.mfu_hits: 1457647309 > kstat.zfs.misc.arcstats.mru_ghost_hits: 5765227 > kstat.zfs.misc.arcstats.mru_hits: 90829356 > kstat.zfs.misc.arcstats.prefetch_metadata_misses: 4657105 > kstat.zfs.misc.arcstats.prefetch_metadata_hits: 14515029 > kstat.zfs.misc.arcstats.prefetch_data_misses: 6610395 > kstat.zfs.misc.arcstats.prefetch_data_hits: 6837739 > kstat.zfs.misc.arcstats.demand_metadata_misses: 127929204 > kstat.zfs.misc.arcstats.demand_metadata_hits: 404655615 > kstat.zfs.misc.arcstats.demand_data_misses: 2235496 > kstat.zfs.misc.arcstats.demand_data_hits: 1138662563 > kstat.zfs.misc.arcstats.misses: 141432200 > kstat.zfs.misc.arcstats.hits: 1564670946 > kstat.zfs.misc.zcompstats.skipped_insufficient_gain: 4581339 > kstat.zfs.misc.zcompstats.empty: 842987 > kstat.zfs.misc.zcompstats.attempts: 121463608 > kstat.zfs.misc.zfetchstats.max_streams: 2029717049 > kstat.zfs.misc.zfetchstats.misses: 2043239863 > kstat.zfs.misc.zfetchstats.hits: 15544425 > kstat.zfs.misc.xuio_stats.write_buf_nocopy: 1453761 > kstat.zfs.misc.xuio_stats.write_buf_copied: 0 > kstat.zfs.misc.xuio_stats.read_buf_nocopy: 0 > kstat.zfs.misc.xuio_stats.read_buf_copied: 0 > kstat.zfs.misc.xuio_stats.onloan_write_buf: 0 > kstat.zfs.misc.xuio_stats.onloan_read_buf: 0 > kstat.zfs.misc.zio_trim.failed: 0 > kstat.zfs.misc.zio_trim.unsupported: 867 > kstat.zfs.misc.zio_trim.success: 165333478 > kstat.zfs.misc.zio_trim.bytes: 9734294003712 > security.jail.param.allow.mount.zfs: 0 > security.jail.mount_zfs_allowed: 0 > > > I really don't know but could it be a conflict between the MB SATA > ports and LSI HBA?? As upon startup there do seem to be some ATA Error > messages in dmesg... > > So more of a physical HW issue then FS based? > > Or is it due to the term "bursty IO" that happens with ZFS... either > way I have been looking at this for months trying to figure things out > but other then a reboot nothing I do makes things better! Turning off > my monitoring jail does help on occasion but outside of that I'm lost. > > > I have another NAS based system with UFS root on SSD also yet ZPOOLs > over the various large mechanical drives but never run into this > particular issue! > > > Would anyone be able to help??? > > > Many thanks. > > > Kaya > > _______________________________________________ > freebsd-fs@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org"
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