Today I even saw up to 400k context switches for around 30 minutes on my two
nodes replica... Does anyone else have so high context switches on their
GlusterFS nodes?
I am wondering what is "normal" and if I should be worried...
-------- Original Message --------
Subject: 120k context switches on GlsuterFS nodes
Local Time: May 11, 2017 9:18 PM
UTC Time: May 11, 2017 7:18 PM
From: [email protected]
To: Gluster Users <[email protected]>
Hi,
Today I noticed that for around 50 minutes my two GlusterFS 3.8.11 nodes had a
very high amount of context switches, around 120k. Usually the average is more
around 1k-2k. So I checked what was happening and there where just more users
accessing (downloading) their files at the same time. These are directories
with typical cloud files, which means files of any sizes ranging from a few kB
to MB and a lot of course.
Now I never saw such a high number in context switches in my entire life so I
wanted to ask if this is normal or to be expected? I do not find any signs of
errors or warnings in any log files.
My volume is a replicated volume on two nodes with ZFS as filesystem behind and
the volume is mounted using FUSE on the client (the cloud server). On that
cloud server the glusterfs process was using quite a lot of system CPU but that
server (VM) only has 2 vCPUs so maybe I should increase the number of vCPUs...
Any ideas or recommendations?
Regards,
M.
_______________________________________________
Gluster-users mailing list
[email protected]
http://lists.gluster.org/mailman/listinfo/gluster-users
