[ovirt-users] Re: i/o wait and slow system
See below:
On Aug 27, 2020, at 3:19 PM, info--- via Users
<users(a)ovirt.org> wrote:
Thank you. Reboot of the engine and afterwards the backup server helped :-)
Good deal.
Should I revert some of my previous changes? Reduce the write window
size?
- gluster volume set vmstore performance.read-ahead on
- gluster volume set vmstore performance.stat-prefetch on
- gluster volume set vmstore performance.write-behind-window-size 64MB
- gluster volume set vmstore performance.flush-behind on
- gluster volume set vmstore cluster.choose-local on
I find these tend to be workload & system dependent, you’re best bet is to benchmark
and test yourself on your system.
I’m using these on my volumes:
performance.stat-prefetch: on
performance.read-ahead: off
performance.write-behind-window-size: 64MB
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