aries# zfs-stats -a
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ZFS Subsystem Report Thu Sep 13 11:57:30 2012
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System Information:
Kernel Version: 900044 (osreldate)
Hardware Platform: i386
Processor Architecture: i386
ZFS Storage pool Version: 28
ZFS Filesystem Version: 5
FreeBSD 9.0-RELEASE-p3 #0: Tue Jun 12 01:47:53 UTC 2012 root
11:57AM up 21:21, 2 users, load averages: 3.99, 2.17, 0.93
------------------------------------------------------------------------
System Memory:
0.56% 20.19 MiB Active, 5.58% 202.19 MiB Inact
11.97% 433.74 MiB Wired, 0.00% 184.00 KiB Cache
81.88% 2.90 GiB Free, 0.02% 568.00 KiB Gap
Real Installed: 4.00 GiB
Real Available: 90.09% 3.60 GiB
Real Managed: 98.22% 3.54 GiB
Logical Total: 4.00 GiB
Logical Used: 22.61% 925.91 MiB
Logical Free: 77.39% 3.10 GiB
Kernel Memory: 245.58 MiB
Data: 93.40% 229.37 MiB
Text: 6.60% 16.21 MiB
Kernel Memory Map: 466.16 MiB
Size: 75.98% 354.21 MiB
Free: 24.02% 111.95 MiB
------------------------------------------------------------------------
ARC Summary: (HEALTHY)
Memory Throttle Count: 0
ARC Misc:
Deleted: 46.12k
Recycle Misses: 3.31k
Mutex Misses: 1
Evict Skips: 3.42k
ARC Size: 91.46% 234.13 MiB
Target Size: (Adaptive) 91.43% 234.06 MiB
Min Size (Hard Limit): 12.50% 32.00 MiB
Max Size (High Water): 8:1 256.00 MiB
ARC Size Breakdown:
Recently Used Cache Size: 80.88% 189.36 MiB
Frequently Used Cache Size: 19.12% 44.77 MiB
ARC Hash Breakdown:
Elements Max: 9.59k
Elements Current: 100.00% 9.59k
Collisions: 6.94k
Chain Max: 4
Chains: 658
------------------------------------------------------------------------
ARC Efficiency: 157.52k
Cache Hit Ratio: 92.50% 145.71k
Cache Miss Ratio: 7.50% 11.82k
Actual Hit Ratio: 92.49% 145.70k
Data Demand Efficiency: 99.73% 8.44k
CACHE HITS BY CACHE LIST:
Most Recently Used: 39.62% 57.72k
Most Frequently Used: 60.38% 87.97k
Most Recently Used Ghost: 3.54% 5.15k
Most Frequently Used Ghost: 0.35% 512
CACHE HITS BY DATA TYPE:
Demand Data: 5.78% 8.42k
Prefetch Data: 0.00% 0
Demand Metadata: 94.20% 137.26k
Prefetch Metadata: 0.02% 30
CACHE MISSES BY DATA TYPE:
Demand Data: 0.19% 23
Prefetch Data: 0.00% 0
Demand Metadata: 99.66% 11.78k
Prefetch Metadata: 0.14% 17
------------------------------------------------------------------------
L2ARC is disabled
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------------------------------------------------------------------------
VDEV cache is disabled
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ZFS Tunables (sysctl):
kern.maxusers 384
vm.kmem_size 536870912
vm.kmem_size_scale 3
vm.kmem_size_min 0
vm.kmem_size_max 1073741824
vfs.zfs.l2c_only_size 0
vfs.zfs.mfu_ghost_data_lsize 97386496
vfs.zfs.mfu_ghost_metadata_lsize 11758080
vfs.zfs.mfu_ghost_size 109144576
vfs.zfs.mfu_data_lsize 0
vfs.zfs.mfu_metadata_lsize 0
vfs.zfs.mfu_size 7155712
vfs.zfs.mru_ghost_data_lsize 95168000
vfs.zfs.mru_ghost_metadata_lsize 10958848
vfs.zfs.mru_ghost_size 106126848
vfs.zfs.mru_data_lsize 137367552
vfs.zfs.mru_metadata_lsize 950272
vfs.zfs.mru_size 155123712
vfs.zfs.anon_data_lsize 0
vfs.zfs.anon_metadata_lsize 0
vfs.zfs.anon_size 39896064
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 8388608
vfs.zfs.l2arc_write_max 8388608
vfs.zfs.arc_meta_limit 67108864
vfs.zfs.arc_meta_used 68315340
vfs.zfs.arc_min 33554432
vfs.zfs.arc_max 268435456
vfs.zfs.dedup.prefetch 1
vfs.zfs.mdcomp_disable 0
vfs.zfs.write_limit_override 0
vfs.zfs.write_limit_inflated 11608596480
vfs.zfs.write_limit_max 483691520
vfs.zfs.write_limit_min 33554432
vfs.zfs.write_limit_shift 3
vfs.zfs.no_write_throttle 0
vfs.zfs.zfetch.array_rd_sz 1048576
vfs.zfs.zfetch.block_cap 256
vfs.zfs.zfetch.min_sec_reap 2
vfs.zfs.zfetch.max_streams 8
vfs.zfs.prefetch_disable 1
vfs.zfs.mg_alloc_failures 8
vfs.zfs.check_hostid 1
vfs.zfs.recover 0
vfs.zfs.txg.synctime_ms 1000
vfs.zfs.txg.timeout 5
vfs.zfs.scrub_limit 10
vfs.zfs.vdev.cache.bshift 16
vfs.zfs.vdev.cache.size 0
vfs.zfs.vdev.cache.max 16384
vfs.zfs.vdev.write_gap_limit 4096
vfs.zfs.vdev.read_gap_limit 32768
vfs.zfs.vdev.aggregation_limit 131072
vfs.zfs.vdev.ramp_rate 2
vfs.zfs.vdev.time_shift 6
vfs.zfs.vdev.min_pending 4
vfs.zfs.vdev.max_pending 10
vfs.zfs.vdev.bio_flush_disable 0
vfs.zfs.cache_flush_disable 0
vfs.zfs.zil_replay_disable 0
vfs.zfs.zio.use_uma 0
vfs.zfs.version.zpl 5
vfs.zfs.version.spa 28
vfs.zfs.version.acl 1
vfs.zfs.debug 0
vfs.zfs.super_owner 0
------------------------------------------------------------------------
aries#
dougs said:/etc/sysctl.conf:
Code:aries# less /etc/sysctl.conf # $FreeBSD: release/9.0.0/etc/sysctl.conf 112200 2003-03-13 18:43:50Z mux $ # # This file is read when going to multi-user and its contents piped thru # ``sysctl'' to adjust kernel values. ``man 5 sysctl.conf'' for details. # # Uncomment this to prevent users from seeing information about processes that # are being run under another UID. #security.bsd.see_other_uids=0 kern.maxvnodes=400000 vfs.zfs.write_limit_override=268435456
/boot/loader.conf:
Code:aries# less /boot/loader.conf vfs.zfs.prefetch_disable="1" vm.kmem_size="512M" vm.kmem_size_max="1G" vfs.zfs.arc_max="256M" #vfs.zfs.vdev.cache.size="10M" zfs_load="YES" #vfs.zfs.txg.timeout="5"
vm.kmem_size_max="512M"
# ZFS settings
#vm.kmem_size="1G"
vm.kmem_size_max=1G
vm.kmem_size_scale=1
vfs.zfs.arc_max="768M"
vfs.zfs.arc_min="128M"
vfs.zfs.prefetch_disable="1"
vfs.zfs.zil_disable="0"
#vfs.zfs.vdev.max_pending="4"
#vfs.zfs.txg.timeout="7"
$ zpool status
pool: newpool
state: ONLINE
scan: resilvered 330G in 2h4m with 0 errors on Sat Aug 18 23:29:52 2012
config:
NAME STATE READ WRITE CKSUM
newpool ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
gpt/disk3 ONLINE 0 0 0
gpt/disk1 ONLINE 0 0 0
mirror-1 ONLINE 0 0 0
gpt/disk4 ONLINE 0 0 0
gpt/disk2 ONLINE 0 0 0
errors: No known data errors
$ zpool list
$ uname -a
FreeBSD rogue.ashesofthe.net 9.0-STABLE FreeBSD 9.0-STABLE #0 r236880: Mon Jun 11 05:49:06 PDT 2012 root@rogue.ashesofthe.net:/usr/obj/usr/src-9/sys/ROGUE90 i386
ada1: <WDC WD2500YD-01NVB1 10.02E01> ATA-7 SATA 2.x device
ada1: 300.000MB/s transfers (SATA 2.x, UDMA5, PIO 8192bytes)
ada1: 239372MB (490234752 512 byte sectors: 16H 63S/T 16383C)
ada1: Previously was known as ad5
ada2 at ata3 bus 0 scbus2 target 0 lun 0
ada2: <WDC WD2500KS-00MJB0 02.01C03> ATA-7 SATA 2.x device
ada2: 300.000MB/s transfers (SATA 2.x, UDMA5, PIO 8192bytes)
ada2: 238474MB (488395055 512 byte sectors: 16H 63S/T 16383C)
ada2: Previously was known as ad6
ada3 at ata3 bus 0 scbus2 target 1 lun 0
ada3: <WDC WD2500YS-01SHB0 20.06C03> ATA-7 SATA 2.x device
ada3: 300.000MB/s transfers (SATA 2.x, UDMA5, PIO 8192bytes)
ada3: 239372MB (490234752 512 byte sectors: 16H 63S/T 16383C)
ada3: Previously was known as ad7