From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Stanislav Meduna <stano@meduna.org>
Cc: "linux-rt-users@vger.kernel.org" <linux-rt-users@vger.kernel.org>
Subject: Re: Realtime capable userspace?
Date: Sun, 14 Apr 2013 12:08:53 +0200 [thread overview]
Message-ID: <516A8035.9040604@xenomai.org> (raw)
In-Reply-To: <516A7083.8080705@meduna.org>
On 04/14/2013 11:01 AM, Stanislav Meduna wrote:
> Hi,
>
> I know this is not a kernel-related question, but I think the amount of
> people doing realtime here is probably the largest.
>
> As learned the hard-way the glibc is not (yet) realtime capable and
> first changes are now starting to trickle in. Even if I try to fix known
> places, who knows what, where and for how long is locked.
>
> What userspace (libc / threads / malloc) are you using for realtime
> applications? From my quick research:
PI mutexes are not sufficient to make malloc deterministic. I guess if
you are looking for a deterministic malloc, you should have a look at TLSF.
You can probably get the replacement malloc be used by glibc by using
LD_PRELOAD techniques (but OK, it would be just a hack).
--
Gilles.
next prev parent reply other threads:[~2013-04-14 10:21 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-14 9:01 Realtime capable userspace? Stanislav Meduna
2013-04-14 10:08 ` Gilles Chanteperdrix [this message]
2013-04-14 11:46 ` Stanislav Meduna
2013-04-14 11:55 ` Gilles Chanteperdrix
2013-04-14 12:20 ` Stanislav Meduna
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=516A8035.9040604@xenomai.org \
--to=gilles.chanteperdrix@xenomai.org \
--cc=linux-rt-users@vger.kernel.org \
--cc=stano@meduna.org \
/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