[PATCH] Simple ARC stats in top
Ronald Klop
ronald-freebsd8 at klop.yi.org
Tue Jun 26 15:34:19 UTC 2012
Nr. of page vs. KB size?
Ronald.
On Tue, 26 Jun 2012 17:25:40 +0200, Mark Felder <feld at feld.me> wrote:
> On Tue, 26 Jun 2012 09:49:36 -0500, Andriy Gapon <avg at freebsd.org> wrote:
>
>>
>> Please also reproduce the zfs-stats lines preceding the quoted output.
>
> zfs2# zfs-stats -A
>
> ------------------------------------------------------------------------
> ZFS Subsystem Report Tue Jun 26 10:24:40 2012
> ------------------------------------------------------------------------
>
> ARC Summary: (HEALTHY)
> Memory Throttle Count: 0
>
> ARC Misc:
> Deleted: 87.09m
> Recycle Misses: 50.58m
> Mutex Misses: 299.09k
> Evict Skips: 5.28m
>
> ARC Size: 941.88% 5.89 GiB
> Target Size: (Adaptive) 100.00% 640.00 MiB
> Min Size (Hard Limit): 12.50% 80.00 MiB
> Max Size (High Water): 8:1 640.00 MiB
>
> ARC Size Breakdown:
> Recently Used Cache Size: 0.66% 40.00 MiB
> Frequently Used Cache Size: 99.34% 5.85 GiB
>
> ARC Hash Breakdown:
> Elements Max: 29.25m
> Elements Current: 100.00% 29.25m
> Collisions: 89.81m
> Chain Max: 131
> Chains: 524.29k
>
> ------------------------------------------------------------------------
>
>> Additionally, please run this script
>> http://people.freebsd.org/~avg/arc-sizes.sh
>>
>
>
> zfs2# sh arc-sizes.sh
> ARC top-level breakdown:
> size: 6319074560
> hdr_size: 10166488
> data_size: 1513472
> other_size: 245576
>
> ARC size vs hdr_size + data_size + other_size:
> 6319074560 vs 11925536
>
> ARC Data breakdown:
> mfu_size: 212992
> mru_size: 1251328
> anon_size: 49152
>
> Data size vs mfu_size + mru_size + anon_size:
> 1513472 vs 1513472
>
> mfu breakdown:
> data_lsize: 0
> metadata_lsize: 0
>
> other (overhead? ghost entries?): 212992
>
> mru breakdown:
> data_lsize: 0
> metadata_lsize: 49152
>
> other (overhead? ghost entries?): 1202176
>
> anon breakdown:
> data_lsize: 0
> metadata_lsize: 0
>
> other (overhead? ghost entries?): 49152
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