zfs arc and amount of wired memory

[Eugene M. Zheganin]

Hi.

On 07.02.2012 16:46, Andriy Gapon wrote:
> on 07/02/2012 10:36 Eugene M. Zheganin said the following:
>> If I use the script from http://wiki.freebsd.org/ZFSTuningGuide , it says:
>>
>> ===Cut===
>> ARC Size:                               12.50%  363.14  MiB
>>          Target Size: (Adaptive)         12.50%  363.18  MiB
>>          Min Size (Hard Limit):          12.50%  363.18  MiB
>>          Max Size (High Water):          8:1     2.84    GiB
>> ===Cut===
>>
>> At the same time I have 3500 megs in wired state:
>>
>>
>> Please try sysutils/zfs-stats; zfs-stats -a output should provide a good
>> overview of the state and configuration of the system.
>>
Thanks.  But it seems to be the same script. Anyway, it reports the same 
amount of memory:

[emz at taiga:~]# zfs-stats -A

------------------------------------------------------------------------
ZFS Subsystem Report                            Tue Feb  7 17:32:34 2012
------------------------------------------------------------------------

ARC Summary: (THROTTLED)
         Memory Throttle Count:                  2.62k

ARC Misc:
         Deleted:                                10.17m
         Recycle Misses:                         1.47m
         Mutex Misses:                           7.69k
         Evict Skips:                            7.69k

ARC Size:                               12.50%  363.24  MiB
         Target Size: (Adaptive)         12.50%  363.18  MiB
         Min Size (Hard Limit):          12.50%  363.18  MiB
         Max Size (High Water):          8:1     2.84    GiB

ARC Size Breakdown:
         Recently Used Cache Size:       57.54%  209.01  MiB
         Frequently Used Cache Size:     42.46%  154.22  MiB

ARC Hash Breakdown:
         Elements Max:                           191.41k
         Elements Current:               33.76%  64.63k
         Collisions:                             27.09m
         Chain Max:                              17
         Chains:                                 13.56k

------------------------------------------------------------------------

I still don't get why I have 3/5 Gigs in wired state.

Thanks.

Eugene.