From: David Smith <dsmith@redhat.com>
To: William Cohen <wcohen@redhat.com>,
David Long <dave.long@linaro.org>,
systemtap@sourceware.org,
Pratyush Anand <panand@redhat.com>,
Mark Brown <broonie@linaro.org>
Cc: Jeremy Linton <jlinton@redhat.com>
Subject: Re: exercising current aarch64 kprobe support with systemtap
Date: Thu, 23 Jun 2016 13:47:00 -0000 [thread overview]
Message-ID: <13655c47-87d4-a290-d495-9ec07f30cf82@redhat.com> (raw)
In-Reply-To: <3adfefee-7f69-5621-301e-25db1bcd67df@redhat.com>
On 06/23/2016 08:42 AM, William Cohen wrote:
... stuff deleted ...
> When running the tests on various kernels I typically see message about the hrtimer
> interrupt like the following during the run:
>
> ...
> Running /root/systemtap_write/systemtap/testsuite/systemtap.onthefly/kprobes_onthefly.exp ...
> [ 197.217699] stap_ab30d3b6ca1d8e512f40980479fd57e_18018: module verification failed: signature and/or required key missing - tainting kernel
> [ 534.166223] Scheduler tracepoints stat_sleep, stat_iowait, stat_blocked and stat_runtime require the kernel parameter schedstats=enabled or kernel.sched_schedstats=1
> [ 534.205668] hrtimer: interrupt took 241848 ns
> ...
The hrtimer interrupt message is PR20286. This appears on more than just
aarch64. Basically the hrtimer probe handler took too long and the next
one has been skipped. We decided there wasn't really anything we could do.
<https://sourceware.org/bugzilla/show_bug.cgi?id=20286>
--
David Smith
dsmith@redhat.com
Red Hat
http://www.redhat.com
256.217.0141 (direct)
256.837.0057 (fax)
next prev parent reply other threads:[~2016-06-23 13:47 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-09 16:17 William Cohen
2016-06-09 19:52 ` William Cohen
2016-06-10 3:42 ` David Long
2016-06-10 5:49 ` David Long
2016-06-10 13:43 ` Pratyush Anand
2016-06-10 14:03 ` William Cohen
2016-06-10 14:37 ` David Long
2016-06-10 15:27 ` William Cohen
2016-06-10 14:20 ` David Long
2016-06-10 15:11 ` William Cohen
2016-06-10 17:07 ` Pratyush Anand
2016-07-12 14:33 ` William Cohen
2016-07-13 18:26 ` David Long
2016-07-13 18:47 ` Pratyush Anand
2016-07-13 19:45 ` William Cohen
2016-06-10 21:28 ` William Cohen
2016-06-10 21:37 ` William Cohen
2016-06-13 4:28 ` Pratyush Anand
2016-06-13 13:42 ` William Cohen
2016-06-22 20:24 ` William Cohen
2016-06-23 3:19 ` David Long
2016-06-23 13:42 ` William Cohen
2016-06-23 13:47 ` David Smith [this message]
2016-06-23 15:49 ` William Cohen
2016-06-23 18:26 ` David Long
2016-06-23 19:22 ` William Cohen
2016-06-27 2:57 ` David Long
2016-06-27 14:18 ` Pratyush Anand
2016-06-28 3:20 ` William Cohen
2016-07-04 12:46 ` Pratyush Anand
2016-07-07 19:05 ` David Long
2016-07-07 19:58 ` Frank Ch. Eigler
2016-08-03 13:13 ` Pratyush Anand
2016-08-03 14:51 ` William Cohen
2016-08-03 15:11 ` David Long
2016-08-03 17:40 ` William Cohen
2016-08-03 20:00 ` Lastest kprobes64 patch David Long
2016-08-03 20:01 ` Frank Ch. Eigler
2016-08-03 20:08 ` David Long
2016-08-04 5:03 ` Pratyush Anand
2016-08-04 13:07 ` David Long
2016-08-04 4:42 ` exercising current aarch64 kprobe support with systemtap Pratyush Anand
2016-08-04 13:57 ` William Cohen
2016-08-04 14:36 ` Pratyush Anand
2016-08-04 14:50 ` William Cohen
2016-08-04 20:51 ` William Cohen
2016-08-17 14:36 ` William Cohen
2016-08-17 18:04 ` David Smith
2016-08-17 18:28 ` William Cohen
2016-08-18 15:07 ` David Smith
2016-08-18 15:16 ` William Cohen
2016-08-18 15:39 ` David Smith
2016-08-18 14:55 ` Pratyush Anand
2016-06-13 16:11 ` William Cohen
2016-06-13 16:15 ` William Cohen
2016-06-14 4:27 ` Pratyush Anand
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