Linux-rt-users archive mirror
 help / color / mirror / Atom feed

From: Joseph Salisbury <joseph.salisbury@canonical.com>
To: linux-rt-users@vger.kernel.org
Subject: Question Regarding isolcpus
Date: Tue, 26 Sep 2023 12:45:14 -0400	[thread overview]
Message-ID: <5afe86b4-bae3-2fa8-ec33-9686d3c18255@canonical.com> (raw)

Hi All,

I have a question regarding the isolcpus parameter.  I've been seeing 
this parameter commonly used. However, in the kernel.org 
documentation[0], isolcpus is listed as depreciated.

Is it the case that isolcpus should not be used at all?  I've seen it 
used in conjunction with taskset.  However, should we now be telling rt 
users to use only cpusets in cgroups?  I see that CPUAffinity can be set 
in /etc/systemd/system.conf.  Is that the preferred method, so the 
process scheduler will automatically migrate processes between the 
cpusets in the cgroup cpuset or the list set by CPUAffinity?

I'm sure there are some presentations or papers on this, so I'll dig 
around as well :-)

Thanks,

Joe


[0] 
https://www.kernel.org/doc/html/v5.15/admin-guide/kernel-parameters.html#:~:text=Deprecated%20%2D%20use%20cpusets%20instead 

next             reply	other threads:[~2023-09-26 16:45 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-26 16:45 Joseph Salisbury [this message]
2023-09-28  8:39 ` Question Regarding isolcpus Sebastian Andrzej Siewior
2023-09-28 19:19   ` Rod Webster
2023-09-28 21:03     ` Gautham
2023-10-12 17:27   ` Joseph Salisbury
2023-10-12 19:10     ` Waiman Long
2023-10-12 19:23       ` Joseph Salisbury
2023-10-13 18:07         ` Waiman Long

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=5afe86b4-bae3-2fa8-ec33-9686d3c18255@canonical.com \
    --to=joseph.salisbury@canonical.com \
    --cc=linux-rt-users@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).