Re: vmstat

[Lars Reichardt <lars%paradoxon.info@localhost>]

On Tue, 10 Nov 2020 12:12:14 +0000
Patrick Welche <prlw1%cam.ac.uk@localhost> wrote:

> # vmstat -C
> Pool cache statistics.
> Name          Spin GrpSz Full Emty PoolLayer CacheLayer  Hit%
> CpuLayer  Hit% amappl           8    63   66    0    496221
> 1592973  68.8   563372236  99.7 anonpl       60772    63 11400   0
> 55980901  177419830  68.4  9594977028  98.2 ...
> xhcixfer         0    15    0    0         5          8  37.5
>  77  89.6 xhcixfer         0    15    0    0         5         11
> 54.5         193  94.3 zfs_znode_cache 2906   15   51    0   4258698
>  17474551  75.6   215763165  91.9 ©ÿÿ          2368    15   53
> 0   4471316   17390812  74.3   305275419  94.3 ©ÿÿ             0
>  15    0    0    258353     259551   0.5      277790   6.6 ©ÿÿ
>         0    15    0    0    117290     117459   0.1      119696
> 1.9 ©ÿÿ             0    15    0    0     74991      75197   0.3
>     79474   5.4 ©ÿÿ             2    15    0    0     36643
> 36739   0.3       37986   3.3 ...
> 
> 
> interesting "Pool" name... (10G wired memory box)
> 
> 

Those pool names seem clearly broken.
It seems the box is running with a zfs pool which has it's own cache
(ARC) which memory is entirely wired and might grow quite large.
What does vmstat -vmC show for those pools?

para  


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