From: Ashif Harji <asharji@cs.uwaterloo.ca>
To: Jan Kara <jack@suse.cz>
Cc: Nick Piggin <npiggin@suse.de>, linux-kernel@vger.kernel.org
Subject: Re: do_generic_mapping_read performance issue
Date: Tue, 13 Mar 2007 14:43:47 -0400 (EDT) [thread overview]
Message-ID: <Pine.GSO.4.64.0703131438580.8193@cpu102.cs.uwaterloo.ca> (raw)
In-Reply-To: <20070312173500.GF23532@duck.suse.cz>
>> I would like to submit a patch to fix the performance problem. The
>> simplest solution is to remove the check. Even in the situation where an
>> application does not read in PAGE_SIZE multiples as described above, if
>> the page is accessed frequently it should remain in the cache. However, I
>> am open to suggestions for a more sophisticated scheme.
>
> Well, yes, that's an obvious solution. I just wanted to make sure that
> such change won't break some other load. But so far it seems it won't...
I would like to find out if the change I am suggesting will cause any
other problems. Is there someone else I should contact before submitting
a patch? Or should I just wait another day or two for comments?
ashif.
next prev parent reply other threads:[~2007-03-13 18:44 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-09 22:03 Ashif Harji
2007-03-12 14:20 ` Jan Kara
2007-03-12 14:39 ` Nick Piggin
2007-03-12 15:13 ` Jan Kara
2007-03-12 17:05 ` Ashif Harji
2007-03-12 17:35 ` Jan Kara
2007-03-13 18:43 ` Ashif Harji [this message]
2007-03-13 18:55 ` Jan Kara
2007-03-14 19:58 ` [PATCH] mm/filemap.c: unconditionally call mark_page_accessed Ashif Harji
2007-03-14 20:55 ` Dave Kleikamp
2007-03-14 21:33 ` Andreas Mohr
2007-03-14 22:08 ` Dave Kleikamp
2007-03-15 1:36 ` Xiaoning Ding
2007-03-15 5:22 ` Ashif Harji
2007-03-15 12:46 ` Dave Kleikamp
2007-03-15 12:50 ` Nick Piggin
2007-03-15 19:07 ` Andrew Morton
2007-03-15 21:49 ` Andrea Arcangeli
2007-03-15 22:06 ` Andrew Morton
2007-03-15 23:15 ` Andrea Arcangeli
2007-03-15 15:00 ` Rik van Riel
2007-03-15 17:37 ` Valdis.Kletnieks
2007-03-15 18:35 ` Rik van Riel
2007-03-16 3:51 ` Valdis.Kletnieks
2007-03-16 4:09 ` Rik van Riel
2007-03-16 14:20 ` Anton Blanchard
2007-03-15 10:39 ` Peter Zijlstra
2007-03-15 12:38 ` Nick Piggin
2007-03-15 15:06 ` Rik van Riel
2007-03-15 15:56 ` Chuck Ebbert
2007-03-15 16:29 ` Nick Piggin
2007-03-15 17:04 ` Rik van Riel
2007-03-15 17:44 ` Hugh Dickins
2007-03-15 20:01 ` Nick Piggin
2007-03-15 22:59 ` Andrea Arcangeli
2007-03-15 23:15 ` Dave Kleikamp
2007-03-15 23:28 ` Andrea Arcangeli
2007-03-15 19:55 ` Ashif Harji
2007-03-15 20:07 ` Nick Piggin
2007-03-15 20:31 ` Andreas Mohr
2007-03-12 16:46 ` do_generic_mapping_read performance issue Ashif Harji
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