On 2021-10-26 10:24 AM, Shawn Heisey wrote:
...
I don't think swap is the problem. Disabling swap entirely would be a
good test to confirm. For general server use cases, I would not
recommend that action, but for dedicated systems with plenty of memory
like what is described in this thread, running without swap space seems
like a very good idea.
But check your /etc/fstab first and make sure nothing is mounted as tmpfs.
You really should stick in an SSD and have a 64G swap partition on it:
it won't hurt and it costs nothing. You should also check `iostat -dmx`
when your system's "slow", e.g. seeing > 100% utilization on disk writes
usually means a non-TLER disk going bad and not telling the OS about it
(and slowing everything down to a crawl).
Dima
