From: Peter Zijlstra <peterz@infradead.org>
To: Phil Auld <pauld@redhat.com>
Cc: linux-kernel@vger.kernel.org, Ben Segall <bsegall@google.com>,
Ingo Molnar <mingo@redhat.com>
Subject: Re: [PATCH] sched/fair: Limit sched_cfs_period_timer loop to avoid hard lockup
Date: Fri, 15 Mar 2019 17:29:11 +0100 [thread overview]
Message-ID: <20190315162911.GA5996@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20190315133042.GB27131@pauld.bos.csb>
On Fri, Mar 15, 2019 at 09:30:42AM -0400, Phil Auld wrote:
> On Fri, Mar 15, 2019 at 11:11:50AM +0100 Peter Zijlstra wrote:
> > Computers _suck_ at /100. And since you're free to pick the constant,
> > pick a power of two, computers love those.
> >
>
> Fair enough, I was thinking percents. And also that once we get in
> here it's not a really hot path.
I've seen people say that before; but that's not something I can relate
to. The basic idea is fractions.
next prev parent reply other threads:[~2019-03-15 16:29 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-13 15:08 [PATCH] sched/fair: Limit sched_cfs_period_timer loop to avoid hard lockup Phil Auld
2019-03-15 10:11 ` Peter Zijlstra
2019-03-15 10:33 ` Peter Zijlstra
2019-03-15 13:51 ` Phil Auld
2019-03-15 15:59 ` Peter Zijlstra
2019-03-15 16:19 ` Phil Auld
2019-03-15 13:30 ` Phil Auld
2019-03-15 16:29 ` Peter Zijlstra [this message]
2019-03-15 15:30 ` Phil Auld
2019-03-15 16:03 ` Peter Zijlstra
2019-03-15 16:17 ` Phil Auld
2019-03-18 13:29 ` Phil Auld
2019-03-18 17:14 ` bsegall
2019-03-18 17:52 ` Phil Auld
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=20190315162911.GA5996@hirez.programming.kicks-ass.net \
--to=peterz@infradead.org \
--cc=bsegall@google.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=pauld@redhat.com \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox