From: Joe Lawrence <joe.lawrence@redhat.com>
To: David Vernet <void@manifault.com>,
live-patching@vger.kernel.org, linux-kernel@vger.kernel.org,
jpoimboe@redhat.com, pmladek@suse.com, jikos@kernel.org,
mbenes@suse.cz
Subject: Re: [PATCH] livepatch: Avoid CPU hogging with cond_resched
Date: Fri, 7 Jan 2022 09:13:08 -0500 [thread overview]
Message-ID: <1f1b9b01-cfab-8a84-f35f-c21172e5d64d@redhat.com> (raw)
In-Reply-To: <20211229215646.830451-1-void@manifault.com>
On 12/29/21 4:56 PM, David Vernet wrote:
> For example, under certain workloads, enabling a KLP patch with
> many objects or functions may cause ksoftirqd to be starved, and thus for
> interrupts to be backlogged and delayed.
Just curious, approximately how many objects/functions does it take to
hit this condition? While the livepatching kselftests are more about
API and kernel correctness, this sounds like an interesting test case
for some of the other (out of tree) test suites.
Thanks,
--
Joe
next prev parent reply other threads:[~2022-01-07 14:13 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-29 21:56 David Vernet
2022-01-05 10:17 ` Miroslav Benes
2022-01-07 0:21 ` Song Liu
2022-01-07 8:17 ` Petr Mladek
2022-01-10 14:55 ` David Vernet
2022-01-07 13:03 ` Petr Mladek
2022-01-07 14:13 ` Joe Lawrence [this message]
2022-01-07 16:46 ` Song Liu
2022-01-10 16:16 ` Joe Lawrence
2022-01-11 1:49 ` Song Liu
2021-12-30 4:16 David Vernet
2021-12-31 23:05 ` Kumar Kartikeya Dwivedi
2022-01-03 16:04 ` Petr Mladek
2022-01-10 14:38 ` David Vernet
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