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zfs-arc-max

3567225Mar 23 2018 — edited Mar 24 2018

hi,

if i have 2 projects and i like to calculate zfs_arc_max then :

physical memory - (rss_proj1+rss_proj2) =zfs_arc_max.right? where rss_proj is the rss value from prstat -J of the project.

prstat -J

   PID USERNAME  SIZE   RSS STATE   PRI NICE      TIME  CPU PROCESS/NLWP

   629 root       31M 8192K sleep    59    0   0:00:39 0.3% pkg.depotd/64

  1140 root       11M 3760K cpu0     59    0   0:00:01 0.3% prstat/1

  1135 root       19M 5940K sleep    59    0   0:00:00 0.0% sshd/1

     5 root        0K    0K sleep    99  -20   0:00:02 0.0% zpool-rpool/147

   415 root       16M 3944K sleep    59    0   0:00:00 0.0% nscd/34

    78 daemon     10M 1436K sleep    60  -20   0:00:00 0.0% kcfd/3

   137 root     3392K 1436K sleep    59    0   0:00:00 0.0% vbiosd/3

   110 root     2708K 1460K sleep    59    0   0:00:00 0.0% pfexecd/3

    37 netcfg   3748K 2480K sleep    59    0   0:00:00 0.0% netcfgd/4

   502 root     8996K 1348K sleep    59    0   0:00:00 0.0% cron/1

    67 netadm   5000K 3208K sleep    59    0   0:00:00 0.0% ipmgmtd/6

    15 root       21M   19M sleep    59    0   0:00:14 0.0% svc.configd/30

    13 root       25M   17M sleep    59    0   0:00:03 0.0% svc.startd/15

    45 netadm     11M 2272K sleep    59    0   0:00:00 0.0% ibmgmtd/4

     9 root        0K    0K sleep    99  -20   0:00:00 0.0% postwaittq/1

PROJID    NPROC  SWAP   RSS MEMORY      TIME  CPU PROJECT

     0       72  203M  138M   6.8%   0:01:00 0.3% system

     1        7 8704K   19M   0.9%   0:00:01 0.3% user.root

     3        2 2660K 4396K   0.2%   0:00:00 0.0% default

i have 2 g RAM so zfs-arc-max=2g -(138m+19m+4396k).right?

tnx

This post has been answered by Andris Perkons-Oracle on Mar 23 2018
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