From: Adrian Hunter <adrian.hunter@intel.com>
To: "Tomáš Trnka" <trnka@scm.com>
Cc: linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org,
Peter Zijlstra <peterz@infradead.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Ingo Molnar <mingo@redhat.com>
Subject: Re: perf top -p broken for multithreaded processes since 5.19
Date: Fri, 2 Sep 2022 17:50:22 +0300 [thread overview]
Message-ID: <2fd9b620-e9a8-9cd9-1b4a-6b13d829b2ae@intel.com> (raw)
In-Reply-To: <10137382.nUPlyArG6x@mintaka.ncbr.muni.cz>
On 2/09/22 17:46, Tomáš Trnka wrote:
> Hello,
>
> A bug in perf v5.19 and newer completely breaks monitoring multithreaded
> processes using "perf top -p". The tool fails to start with "Failed to mmap
> with 22 (Invalid argument)". It still seems to work fine on single-threaded
> processes. "perf record" is also unaffected.
It has been reported here:
https://bugzilla.kernel.org/show_bug.cgi?id=216441
next prev parent reply other threads:[~2022-09-02 15:18 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-02 14:46 perf top -p broken for multithreaded processes since 5.19 Tomáš Trnka
2022-09-02 14:50 ` Adrian Hunter [this message]
2022-09-02 19:17 ` Arnaldo Carvalho de Melo
2022-09-03 7:14 ` Adrian Hunter
2022-09-03 14:08 ` Arnaldo Carvalho de Melo
2022-09-03 17:35 ` Adrian Hunter
[not found] ` <CA+JHD91ReRGYNiBuO=1CGNZy1egcMjDo+VFO=kmCFrqE0mnK7w@mail.gmail.com>
2022-09-05 11:46 ` Adrian Hunter
2022-09-05 10:42 ` Jiri Olsa
2022-09-04 10:15 ` perf top -p broken for multithreaded processes since 5.19 #forregzbot Thorsten Leemhuis
2022-09-19 15:18 ` Thorsten Leemhuis
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=2fd9b620-e9a8-9cd9-1b4a-6b13d829b2ae@intel.com \
--to=adrian.hunter@intel.com \
--cc=acme@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-perf-users@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=peterz@infradead.org \
--cc=trnka@scm.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;
as well as URLs for NNTP newsgroup(s).