From: Matthew Wilcox <willy@debian.org>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] Linux kernel deadlock caused by spinlock bug
Date: Mon, 29 Jul 2002 21:18:49 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590701905846@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590701905843@msgid-missing>
On Mon, Jul 29, 2002 at 04:05:35PM -0500, Van Maren, Kevin wrote:
> Recursive read locks certainly make it more difficult to fix the
> problem. Placing a band-aid on gettimeofday will fix the symptom
> in one location, but will not fix the general problem, which is
> writer starvation with heavy read lock load. The only way to fix
> that is to make writer locks fair or to eliminate them (make them
> _all_ stateless).
The basic principle is that if you see contention on a spinlock, you
should eliminate the spinlock somehow. making spinlocks `fair' doesn't
help that you're spending lots of time spinning on a lock.
--
Revolutions do not require corporate support.
next prev parent reply other threads:[~2002-07-29 21:18 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-29 20:37 [Linux-ia64] Linux kernel deadlock caused by spinlock bug Van Maren, Kevin
2002-07-29 20:46 ` Matthew Wilcox
2002-07-29 21:05 ` Van Maren, Kevin
2002-07-29 21:18 ` Matthew Wilcox [this message]
2002-07-29 21:29 ` Van Maren, Kevin
2002-07-29 21:48 ` David Mosberger
2002-07-30 15:58 ` Russell Lewis
2002-07-30 16:56 ` Richard B. Johnson
2002-07-30 22:48 ` Sean Griffin
2002-07-31 17:37 ` Russell Lewis
-- strict thread matches above, loose matches on Subject: below --
2002-07-30 21:15 Van Maren, Kevin
2002-07-30 17:06 Van Maren, Kevin
2002-07-30 17:44 ` William Lee Irwin III
[not found] <3FAD1088D4556046AEC48D80B47B478C0101F3AE@usslc-exch-4.slc.unisys.com.suse.lists.linux.kernel>
2002-07-30 13:32 ` Andi Kleen
2002-07-30 16:27 ` William Lee Irwin III
2002-07-29 21:29 Van Maren, Kevin
2002-07-29 21:48 ` David Mosberger
2002-07-29 21:05 Van Maren, Kevin
2002-07-29 21:18 ` Matthew Wilcox
2002-07-30 15:58 ` Russell Lewis
2002-07-30 16:56 ` Richard B. Johnson
2002-07-30 17:02 ` Russell Lewis
2002-07-30 17:14 ` Richard B. Johnson
2002-07-30 22:48 ` Sean Griffin
2002-07-31 17:37 ` Russell Lewis
2002-07-29 20:37 Van Maren, Kevin
2002-07-29 20:46 ` [Linux-ia64] " Matthew Wilcox
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=marc-linux-ia64-105590701905846@msgid-missing \
--to=willy@debian.org \
--cc=linux-ia64@vger.kernel.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.