linux-kernel - Re: very poor ext3 write performance on big filesystems?

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Message-ID: <47BB26CB.8010705@grupopie.com>
Date:	Tue, 19 Feb 2008 18:58:19 +0000
From:	Paulo Marques <pmarques@...popie.com>
To:	Mark Lord <lkml@....ca>
CC:	Theodore Tso <tytso@....edu>, Andi Kleen <andi@...stfloor.org>,
	Tomasz Chmielewski <mangoo@...g.org>,
	LKML <linux-fsdevel@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: very poor ext3 write performance on big filesystems?

Mark Lord wrote:
> Theodore Tso wrote:
> ..
>> The following ld_preload can help in some cases.  Mutt has this hack
>> encoded in for maildir directories, which helps.
> ..
> 
> Oddly enough, that same spd_readdir() preload craps out here too
> when used with "rm -r" on largish directories.

 From looking at the code, I think I've found at least one bug in opendir:
...
> 			dnew = realloc(dirstruct->dp, 
> 				       dirstruct->max * sizeof(struct dir_s));
...

Shouldn't this be: "...*sizeof(struct dirent_s));"?

-- 
Paulo Marques - www.grupopie.com

"Nostalgia isn't what it used to be."
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