From: Ingo Molnar <mingo@elte.hu>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>,
LKML <linux-kernel@vger.kernel.org>,
Jeff Mahoney <jeffm@suse.com>,
ReiserFS Development List <reiserfs-devel@vger.kernel.org>,
Chris Mason <chris.mason@oracle.com>,
Alexander Beregalov <a.beregalov@gmail.com>,
Alessio Igor Bogani <abogani@texware.it>,
Jonathan Corbet <corbet@lwn.net>,
Alexander Viro <viro@zeniv.linux.org.uk>
Subject: Re: [PATCH 0/6] kill-the-BKL/reiserfs3: performance improvements, faster than Bkl based scheme
Date: Fri, 1 May 2009 22:36:39 +0200 [thread overview]
Message-ID: <20090501203639.GA9396@elte.hu> (raw)
In-Reply-To: <20090501203309.GA6243@elte.hu>
* Ingo Molnar <mingo@elte.hu> wrote:
> The BKL is clearly removed at a faster reate with such debugging
> measures in place. With such measures the BKL _really_ hurts, and
> very visibly so - and that results in active removal.
Btw., if you can think of any way to create a cleaner debug tool
here i'd be glad to start a new tree that adds only _that_ tool -
and that could perhaps be dealt with independently and possibly
pulled upstream too, if clean enough.
The problem is, i think it would still quack like a global mutex,
would walk like a global mutex and would look like a global mutex
:-/
Ingo
next prev parent reply other threads:[~2009-05-01 20:37 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-01 2:44 Frederic Weisbecker
2009-05-01 2:44 ` [PATCH 1/6] kill-the-BKL/reiserfs: release write lock on fs_changed() Frederic Weisbecker
2009-05-01 6:31 ` Andi Kleen
2009-05-01 13:28 ` Frederic Weisbecker
2009-05-01 13:44 ` Chris Mason
2009-05-01 14:01 ` Frederic Weisbecker
2009-05-01 14:14 ` Chris Mason
2009-05-02 1:19 ` Frederic Weisbecker
2009-05-01 2:44 ` [PATCH 2/6] kill-the-BKL/reiserfs: release the write lock before rescheduling on do_journal_end() Frederic Weisbecker
2009-05-01 7:09 ` Ingo Molnar
2009-05-01 13:31 ` Frederic Weisbecker
2009-05-01 22:20 ` Frederic Weisbecker
2009-05-01 2:44 ` [PATCH 3/6] kill-the-BKL/reiserfs: release write lock while rescheduling on prepare_for_delete_or_cut() Frederic Weisbecker
2009-05-01 2:44 ` [PATCH 4/6] kill-the-BKL/reiserfs: release the write lock inside get_neighbors() Frederic Weisbecker
2009-05-01 5:51 ` Ingo Molnar
2009-05-01 13:25 ` Frederic Weisbecker
2009-05-01 13:29 ` Chris Mason
2009-05-01 13:31 ` Ingo Molnar
2009-05-01 2:44 ` [PATCH 5/6] kill-the-BKL/reiserfs: release the write lock inside reiserfs_read_bitmap_block() Frederic Weisbecker
2009-05-01 5:47 ` Ingo Molnar
2009-05-01 13:19 ` Frederic Weisbecker
2009-05-01 13:30 ` Chris Mason
2009-05-01 13:51 ` Frederic Weisbecker
2009-05-01 2:44 ` [PATCH 6/6] kill-the-BKL/reiserfs: release the write lock on flush_commit_list() Frederic Weisbecker
2009-05-01 5:42 ` Ingo Molnar
2009-05-01 13:13 ` Frederic Weisbecker
2009-05-01 13:23 ` Ingo Molnar
2009-05-01 13:26 ` Chris Mason
2009-05-01 13:29 ` Ingo Molnar
2009-05-01 13:54 ` Chris Mason
2009-05-01 5:35 ` [PATCH 0/6] kill-the-BKL/reiserfs3: performance improvements, faster than Bkl based scheme Ingo Molnar
2009-05-01 12:18 ` Thomas Meyer
2009-05-01 14:12 ` Frederic Weisbecker
2009-05-01 19:59 ` Linus Torvalds
2009-05-01 20:33 ` Ingo Molnar
2009-05-01 20:36 ` Ingo Molnar [this message]
2009-05-01 21:11 ` Linus Torvalds
2009-05-01 21:32 ` Ingo Molnar
2009-05-02 1:39 ` Frederic Weisbecker
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