High IO delay

haiopaii

Active Member
Jul 16, 2019
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Hey guys,

haven´t found anything on the forum, which helps.

I recently bought a new server, but IO delay is a bit too high.

Hardware:
  • AMD EPYC 9124 (3,00 GHz, 16-Core, 64 MB)
  • 128GB ECC Registered (RDIMM) DDR5 5600 RAM
  • 2x 960 GB ATP A650Sc Superior M.2 SATA SSD, running ZFS
Memoery usage is about 40%

/etc/modprobe.d/zfs.conf ist set to:
Code:
options zfs zfs_arc_max=34359738368

arcstat output:
Code:
    time  read  ddread  ddh%  dmread  dmh%  pread  ph%   size      c  avail
14:41:22     0       0     0       0     0      0    0    15G    15G    73G

IO delay:
1722256947692.png


What should be the average IO delay with this Hardware?