From: Scott Wood <swood@redhat.com>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Steven Rostedt <rostedt@goodmis.org>,
Peter Zijlstra <peterz@infradead.org>,
Juri Lelli <juri.lelli@redhat.com>,
Daniel Bristot de Oliveira <bristot@redhat.com>,
Clark Williams <williams@redhat.com>,
linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org
Subject: Re: [PATCH RT 4/8] sched: migrate disable: Protect cpus_ptr with lock
Date: Fri, 27 Sep 2019 15:02:57 -0500 [thread overview]
Message-ID: <7804e2b7f629ff655bc8284bad17fb263d4a003a.camel@redhat.com> (raw)
In-Reply-To: <20190927121954.3gbzk3i3jbpugrjo@linutronix.de>
On Fri, 2019-09-27 at 14:19 +0200, Sebastian Andrzej Siewior wrote:
> On 2019-09-26 11:52:42 [-0500], Scott Wood wrote:
> > Looks good, thanks!
>
> Thanks, just released.
> Moving forward. It would be nice to have some DL-dev feedback on DL
> patch. For the remaining once, could please throw Steven's
> stress-test-hostplug-cpu-script? If that one does not complain I don't
> see a reason why not apply the patches (since they improve performance
> and do not break anything while doing so).
I'd been using a quick-and-dirty script that does something similar, and ran
it along with rcutorture, a kernel build, and something that randomly
changes affinities -- though with these loads I have to ignore occasional
RCU forward progress complaints that Paul said were expected with this
version of the RCU code, XFS warnings that happen even on unmodified non-RT,
and sometimes a transitory netdev timeout that is not that surprising given
the heavy load and affinity stress (I get it without these patches as well,
though it takes longer).
I just ran Steven's script (both alone and with the other stuff above) and
saw no difference.
-Scott
next prev parent reply other threads:[~2019-09-27 20:03 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-27 5:56 [RT PATCH 0/8] migrate disable fixes and performance Scott Wood
2019-07-27 5:56 ` [PATCH RT 1/8] sched: migrate_enable: Use sleeping_lock to indicate involuntary sleep Scott Wood
2019-07-29 13:26 ` Steven Rostedt
2019-07-27 5:56 ` [PATCH RT 2/8] sched: __set_cpus_allowed_ptr: Check cpus_mask, not cpus_ptr Scott Wood
2019-09-17 14:57 ` Sebastian Andrzej Siewior
2019-09-17 15:23 ` Scott Wood
2019-07-27 5:56 ` [PATCH RT 3/8] sched: Remove dead __migrate_disabled() check Scott Wood
2019-07-27 5:56 ` [PATCH RT 4/8] sched: migrate disable: Protect cpus_ptr with lock Scott Wood
2019-09-26 16:39 ` Sebastian Andrzej Siewior
2019-09-26 16:52 ` Scott Wood
2019-09-27 12:19 ` Sebastian Andrzej Siewior
2019-09-27 20:02 ` Scott Wood [this message]
2019-07-27 5:56 ` [PATCH RT 5/8] sched/deadline: Reclaim cpuset bandwidth in .migrate_task_rq() Scott Wood
2019-09-17 15:10 ` Sebastian Andrzej Siewior
2019-09-27 8:11 ` Juri Lelli
2019-09-27 16:40 ` Scott Wood
2019-09-30 7:12 ` Juri Lelli
2019-09-30 16:24 ` Scott Wood
2019-10-01 8:52 ` Juri Lelli
2019-10-09 6:25 ` Scott Wood
2019-10-09 7:27 ` Juri Lelli
2019-10-09 19:12 ` Scott Wood
2019-10-10 8:18 ` Juri Lelli
2019-07-27 5:56 ` [PATCH RT 6/8] sched: migrate_enable: Set state to TASK_RUNNING Scott Wood
2019-09-17 15:31 ` Sebastian Andrzej Siewior
2019-09-17 17:54 ` Scott Wood
2019-07-27 5:56 ` [PATCH RT 7/8] sched: migrate_enable: Use select_fallback_rq() Scott Wood
2019-09-17 16:00 ` Sebastian Andrzej Siewior
2019-09-24 18:05 ` Scott Wood
2019-07-27 5:56 ` [PATCH RT 8/8] sched: Lazy migrate_disable processing Scott Wood
2019-09-17 16:50 ` Sebastian Andrzej Siewior
2019-09-17 17:06 ` Scott Wood
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