From: Ingo Molnar <mingo@elte.hu>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: jdike@addtoit.com, user-mode-linux-devel@lists.sourceforge.net,
linux-kernel@vger.kernel.org
Subject: Re: scheduling anomaly on uml (was: -rt doesn't compile for UML)
Date: Thu, 29 Nov 2007 17:25:56 +0100 [thread overview]
Message-ID: <20071129162556.GA4268@elte.hu> (raw)
In-Reply-To: <E1Ixlv9-0001rb-U7@dorka.pomaz.szeredi.hu>
* Miklos Szeredi <miklos@szeredi.hu> wrote:
> > to get symbolic stack backdumps for the wakeup points, and add
> > trace_special_sym() calls to generate extra stackdump entries at
> > arbitrary places. schedule() does not have it right now - it might
> > make sense to add it.
>
> OK, this helped.
>
> It looks like the delays are caused by the page allocator, and not
> UML. Which is good news, because I'm supposed to understand memory
> management better than scheduling.
heh :-) Scheduling isnt hard either - and looking at traces (especially
with mcount_enabled=1) certainly helps.
Ingo
next prev parent reply other threads:[~2007-11-29 16:26 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-28 12:47 -rt doesn't compile for UML Miklos Szeredi
2007-11-28 12:50 ` Ingo Molnar
2007-11-28 13:09 ` Miklos Szeredi
2007-11-28 13:15 ` Ingo Molnar
2007-11-28 13:15 ` Ingo Molnar
2007-11-28 13:24 ` Miklos Szeredi
2007-11-28 15:08 ` Jeff Dike
2007-11-28 15:38 ` Miklos Szeredi
2007-11-28 15:41 ` Ingo Molnar
2007-11-28 16:00 ` Miklos Szeredi
2007-11-28 16:05 ` Ingo Molnar
2007-11-28 16:57 ` Miklos Szeredi
2007-11-28 17:02 ` Ingo Molnar
2007-11-28 17:02 ` Miklos Szeredi
2007-11-28 17:24 ` Ingo Molnar
2007-11-28 17:25 ` Miklos Szeredi
2007-11-28 17:38 ` Jeff Dike
2007-11-28 15:06 ` Jeff Dike
2007-11-28 15:35 ` Miklos Szeredi
2007-11-28 18:29 ` Jeff Dike
2007-11-28 18:37 ` Ingo Molnar
2007-11-28 18:46 ` Miklos Szeredi
2007-11-29 10:19 ` scheduling anomaly on uml (was: -rt doesn't compile for UML) Miklos Szeredi
2007-11-29 10:57 ` Ingo Molnar
2007-11-29 11:36 ` Miklos Szeredi
2007-11-29 11:50 ` Ingo Molnar
2007-11-29 16:07 ` Miklos Szeredi
2007-11-29 16:25 ` Ingo Molnar [this message]
2007-11-29 18:05 ` Miklos Szeredi
2007-11-29 19:26 ` Ingo Molnar
2007-11-29 17:02 ` Jeff Dike
2007-11-29 17:16 ` Ingo Molnar
2007-11-29 17:58 ` Miklos Szeredi
2007-11-30 19:44 ` Miklos Szeredi
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=20071129162556.GA4268@elte.hu \
--to=mingo@elte.hu \
--cc=jdike@addtoit.com \
--cc=linux-kernel@vger.kernel.org \
--cc=miklos@szeredi.hu \
--cc=user-mode-linux-devel@lists.sourceforge.net \
/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).