From: Oliver Neukum <oliver@neukum.name>
To: Andrea Arcangeli <andrea@suse.de>, linux-kernel@vger.kernel.org
Cc: Linus Torvalds <torvalds@transmeta.com>,
Alexander Viro <viro@math.psu.edu>
Subject: Re: negative dentries wasting ram
Date: Fri, 31 May 2002 10:34:33 +0200 [thread overview]
Message-ID: <200205311034.33771.oliver@neukum.name> (raw)
In-Reply-To: <20020524071657.GI21164@dualathlon.random>
> as far I can see that negative dentries are not caching anything, they
> should be dropped immediatly, they even slowdown the lookups because
> they're hashed.
They cache things like this:
open("/usr/lib/locale/de_DE+euro/LC_MEASUREMENT", O_RDONLY) = -1 ENOENT (No
such file or directory)
open("/usr/lib/locale/de_DE@euro/LC_MEASUREMENT", O_RDONLY) = 3
Thus they are not really useless, they are just not usefully limited.
Thus IMHO you should look at the swap out path.
Regards
Oliver
prev parent reply other threads:[~2002-05-24 8:34 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-05-24 7:16 Andrea Arcangeli
2002-05-24 8:10 ` Andreas Dilger
2002-05-24 15:36 ` Andrea Arcangeli
2002-05-24 16:12 ` Alexander Viro
2002-05-24 16:21 ` Andrea Arcangeli
2002-05-24 16:24 ` Alexander Viro
2002-05-24 14:43 ` Linus Torvalds
2002-05-24 14:51 ` David S. Miller
2002-05-24 14:53 ` Jakub Jelinek
2002-05-24 20:44 ` David Schwartz
2002-05-25 17:33 ` Florian Weimer
2002-05-24 15:54 ` Andrea Arcangeli
2002-05-24 16:22 ` Alexander Viro
2002-05-24 16:29 ` Linus Torvalds
2002-05-24 16:39 ` Andrea Arcangeli
2002-05-24 17:04 ` Alexander Viro
2002-05-24 17:06 ` Alexander Viro
2002-05-24 17:55 ` Andrea Arcangeli
2002-05-24 18:00 ` Alexander Viro
2002-05-24 18:58 ` Andrea Arcangeli
2002-05-24 19:04 ` Alexander Viro
2002-05-24 19:43 ` Andrea Arcangeli
2002-05-24 19:55 ` Alexander Viro
2002-05-24 20:36 ` Andrea Arcangeli
2002-05-24 22:14 ` Jan Harkes
2002-05-24 22:31 ` Andrea Arcangeli
2002-05-26 8:06 ` Eric W. Biederman
2002-05-24 17:00 ` Alexander Viro
2002-05-24 18:36 ` Mark Mielke
2002-05-31 8:34 ` Oliver Neukum [this message]
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