garywongwmfreenas
Cadet
- Joined
- May 17, 2012
- Messages
- 1
I have my computer installed 16GB RAM and 120GB SSD, and hope use the most for ARC ( I understand it reserve 1GB for other programs). It is just for fun and home use.
With reference to this link, http://www.zfsbuild.com/2012/04/18/let-zfs-use-all-of-your-ram/
I don't know how to config FreeNas 8.0.4 to use more ram then 14.25gb (high-water) as shown on the arcstat. E.g. can it use 15GB? Or should it increase 11.82 (adaptive)?
Any idea?
For ARC
For L2 ARC
Quote Detail Setting:
With reference to this link, http://www.zfsbuild.com/2012/04/18/let-zfs-use-all-of-your-ram/
I don't know how to config FreeNas 8.0.4 to use more ram then 14.25gb (high-water) as shown on the arcstat. E.g. can it use 15GB? Or should it increase 11.82 (adaptive)?
Any idea?
For ARC
Code:
ARC Size: 82.92% 11.82 GiB <<< 2. can it reach 14.25GB? gap of ~2GB RAM
Target Size: (Adaptive) 82.92% 11.82 GiB
Min Size (Hard Limit): 12.50% 1.78 GiB
Max Size (High Water): 8:1 14.25 GiB <<<< 1. always 14.25GB, should it increase to 15GB?
For L2 ARC
Code:
L2 ARC Size: (Adaptive) 111.75 GiB <<< 3. similar case for L2_ARC, while I have 120g SSD
Header Size: 0.16% 187.96 MiB
Quote Detail Setting:
Code:
System Memory:
0.61% 94.90 MiB Active, 0.35% 54.04 MiB Inact
85.20% 12.99 GiB Wired, 0.00% 740.00 KiB Cache
13.83% 2.11 GiB Free, 0.00% 696.00 KiB Gap
Real Installed: 16.00 GiB
Real Available: 98.34% 15.73 GiB
Real Managed: 96.92% 15.25 GiB
Logical Total: 16.00 GiB
Logical Used: 86.48% 13.84 GiB
Logical Free: 13.52% 2.16 GiB
Kernel Memory: 11.65 GiB
Data: 99.88% 11.63 GiB
Text: 0.12% 14.33 MiB
Kernel Memory Map: 14.96 GiB
Size: 75.93% 11.36 GiB
Free: 24.07% 3.60 GiB
Page: 1
------------------------------------------------------------------------
ARC Summary: (THROTTLED)
Storage pool Version: 15
Filesystem Version: 4
Memory Throttle Count: 6.42k
ARC Misc:
Deleted: 20.44m
Recycle Misses: 412.74k
Mutex Misses: 12.47k
Evict Skips: 12.47k
ARC Size: 82.92% 11.82 GiB
Target Size: (Adaptive) 82.92% 11.82 GiB
Min Size (Hard Limit): 12.50% 1.78 GiB
Max Size (High Water): 8:1 14.25 GiB
ARC Size Breakdown:
Recently Used Cache Size: 93.75% 11.08 GiB
Frequently Used Cache Size: 6.25% 756.40 MiB
ARC Hash Breakdown:
Elements Max: 1.38m
Elements Current: 85.29% 1.18m
Collisions: 18.87m
Chain Max: 28
Chains: 239.43k
Page: 2
------------------------------------------------------------------------
ARC Efficiency: 182.10m
Cache Hit Ratio: 94.19% 171.53m
Cache Miss Ratio: 5.81% 10.58m
Actual Hit Ratio: 91.73% 167.05m
Data Demand Efficiency: 99.55% 154.39m
Data Prefetch Efficiency: 50.37% 18.82m
CACHE HITS BY CACHE LIST:
Anonymously Used: 1.20% 2.05m
Most Recently Used: 85.80% 147.17m
Most Frequently Used: 11.59% 19.87m
Most Recently Used Ghost: 0.79% 1.35m
Most Frequently Used Ghost: 0.63% 1.08m
CACHE HITS BY DATA TYPE:
Demand Data: 89.60% 153.69m
Prefetch Data: 5.53% 9.48m
Demand Metadata: 4.60% 7.89m
Prefetch Metadata: 0.27% 466.44k
CACHE MISSES BY DATA TYPE:
Demand Data: 6.63% 700.92k
Prefetch Data: 88.32% 9.34m
Demand Metadata: 3.86% 408.70k
Prefetch Metadata: 1.19% 125.79k
Page: 3
------------------------------------------------------------------------
L2 ARC Summary: (HEALTHY)
Passed Headroom: 30.10m
Tried Lock Failures: 176.29k
IO In Progress: 3.63k
Low Memory Aborts: 114
Free on Write: 92.39k
Writes While Full: 132.34k
R/W Clashes: 97
Bad Checksums: 0
IO Errors: 0
SPA Mismatch: 0
L2 ARC Size: (Adaptive) 111.75 GiB
Header Size: 0.16% 187.96 MiB
L2 ARC Evicts:
Lock Retries: 248
Upon Reading: 5
L2 ARC Breakdown: 10.58m
Hit Ratio: 22.46% 2.38m
Miss Ratio: 77.54% 8.20m
Feeds: 826.59k
L2 ARC Buffer:
Bytes Scanned: 510.72 TiB
Buffer Iterations: 826.59k
List Iterations: 51.53m
NULL List Iterations: 1.91m
L2 ARC Writes:
Writes Sent: 100.00% 186.92k
Page: 4
------------------------------------------------------------------------
File-Level Prefetch: (HEALTHY)
DMU Efficiency: 440.06m
Hit Ratio: 97.00% 426.86m
Miss Ratio: 3.00% 13.20m
Colinear: 13.20m
Hit Ratio: 0.06% 7.77k
Miss Ratio: 99.94% 13.19m
Stride: 414.94m
Hit Ratio: 99.98% 414.85m
Miss Ratio: 0.02% 90.27k
DMU Misc:
Reclaim: 13.19m
Successes: 5.36% 707.00k
Failures: 94.64% 12.49m
Streams: 12.00m
+Resets: 0.03% 4.01k
-Resets: 99.97% 12.00m
Bogus: 0
Page: 5
------------------------------------------------------------------------
VDEV Cache Summary: 584.79k
Hit Ratio: 42.00% 245.60k
Miss Ratio: 47.61% 278.42k
Delegations: 10.39% 60.77k
Page: 6
------------------------------------------------------------------------
ZFS Tunable (sysctl):
kern.maxusers 384
vm.kmem_size 16374902784
vm.kmem_size_scale 1
vm.kmem_size_min 0
vm.kmem_size_max 329853485875
vfs.zfs.l2c_only_size 114782318080
vfs.zfs.mfu_ghost_data_lsize 10384087552
vfs.zfs.mfu_ghost_metadata_lsize 263436800
vfs.zfs.mfu_ghost_size 10647524352
vfs.zfs.mfu_data_lsize 1461041664
vfs.zfs.mfu_metadata_lsize 24438272
vfs.zfs.mfu_size 1494446080
vfs.zfs.mru_ghost_data_lsize 1607044608
vfs.zfs.mru_ghost_metadata_lsize 85804032
vfs.zfs.mru_ghost_size 1692848640
vfs.zfs.mru_data_lsize 10170377216
vfs.zfs.mru_metadata_lsize 307450880
vfs.zfs.mru_size 10607134720
vfs.zfs.anon_data_lsize 0
vfs.zfs.anon_metadata_lsize 0
vfs.zfs.anon_size 0
vfs.zfs.l2arc_norw 1
vfs.zfs.l2arc_feed_again 1
vfs.zfs.l2arc_noprefetch 0
vfs.zfs.l2arc_feed_min_ms 200
vfs.zfs.l2arc_feed_secs 1
vfs.zfs.l2arc_headroom 2
vfs.zfs.l2arc_write_boost 52428800
vfs.zfs.l2arc_write_max 26214400
vfs.zfs.arc_meta_limit 3825290240
vfs.zfs.arc_meta_used 1055754608
vfs.zfs.mdcomp_disable 0
vfs.zfs.arc_min 1912645120
vfs.zfs.arc_max 15301160960
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 0
vfs.zfs.check_hostid 1
vfs.zfs.recover 0
vfs.zfs.txg.write_limit_override 0
vfs.zfs.txg.synctime 5
vfs.zfs.txg.timeout 30
vfs.zfs.scrub_limit 10
vfs.zfs.vdev.cache.bshift 16
vfs.zfs.vdev.cache.size 10485760
vfs.zfs.vdev.cache.max 16384
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.cache_flush_disable 0
vfs.zfs.zil_disable 0
vfs.zfs.zio.use_uma 0
vfs.zfs.version.zpl 4
vfs.zfs.version.spa 15
vfs.zfs.version.dmu_backup_stream 1
vfs.zfs.version.dmu_backup_header 2
vfs.zfs.version.acl 1
vfs.zfs.debug 0
vfs.zfs.super_owner 0
