I agree with Alex.
Also, most of the kernel tunables proposed in that thread are also available in the tuned
profiles provided by the redhat-storage-server source rpm available
at ftp://ftp.redhat.com/redhat/linux/enterprise/7Server/en/RHS/SRPMS/
Usually the alignment of XFS ontop the HW raid is quite important and missed.
Best Regards,
Strahil Nikolov
В сряда, 21 октомври 2020 г., 22:35:21 Гринуич+3, Alex McWhirter <alex(a)triadic.us>
написа:
In my experience, the ovirt optimized defaults are fairly sane. I may change a few things
like enabling read ahead or increasing the shard size, but these are minor performance
bumps if anything.
The most important thing is the underlying storage, RAID 10 is ideal performance wise,
large stripe sizes are preferable for VM workloads, etc... You want the underlying storage
to be as fast as possible, dedicated cache devices are a plus. IOPS and latency are often
more important that throughput.
Network throughput and latency are also very important. I don't think i would attempt
a gluster setup on anything slower than 10GbE, jumbo frames are a huge help, switches with
large buffers are nice as well. Do not L3 route gluster (at least not inter-server links)
unless you have a switch that can do line rate routing. High or inconsistent network
latency will bring gluster to it's knees.
Kernel tuning / gluster volume options do help, but they are not groundbreaking
performance improvements. Usually just little speed boosts here and there.
On 2020-10-21 12:30, eevans(a)digitaldatatechs.com wrote:
>
>
>
Here is the post link:
https://lists.ovirt.org/archives/list/users@ovirt.org/thread/I62VBDYPQIWP...
Here is the actual link:
https://docs.gluster.org/en/latest/Administrator%20Guide/Linux%20Kernel%2...
Eric Evans
Digital Data Services LLC.
304.660.9080
From: suporte(a)logicworks.pt <suporte(a)logicworks.pt>
Sent: Wednesday, October 21, 2020 11:47 AM
To: eevans(a)digitaldatatechs.com
Cc: users <users(a)ovirt.org>
Subject: Re: [ovirt-users] Improve glusterfs performance
Thanks.
This is what I found from you related to glusterfs:
https://lists.ovirt.org/archives/list/users@ovirt.org/message/DN47OTYUUCO...
But I don't find anything on how to imporve gluster.
José
________________________________
De: eevans(a)digitaldatatechs.comPara: suporte(a)logicworks.pt, "users"
<users(a)ovirt.org>Enviadas: Quarta-feira, 21 De Outubro de 2020 15:53:00Assunto: RE:
[ovirt-users] Improve glusterfs performance
I posted a link in the users list that details how to improve gluster and improve
performance. Search gluster.
Eric Evans
Digital Data Services LLC.
304.660.9080
From: suporte(a)logicworks.pt <suporte(a)logicworks.pt> Sent: Wednesday, October 21,
2020 9:42 AMTo: users <users(a)ovirt.org>Subject: [ovirt-users] Improve glusterfs
performance
Hello,
Can anyone help me in how can I improve the performance of glusterfs to work with oVirt?
Thanks
--
________________________________
Jose Ferradeirahttp://www.logicworks.pt
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