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

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Date:	Tue, 19 Feb 2008 16:21:35 +0100
From:	Tomasz Chmielewski <mangoo@...g.org>
To:	Chris Mason <chris.mason@...cle.com>
Cc:	Theodore Tso <tytso@....edu>, Andi Kleen <andi@...stfloor.org>,
	LKML <linux-fsdevel@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: very poor ext3 write performance on big filesystems?

Chris Mason schrieb:
> On Tuesday 19 February 2008, Tomasz Chmielewski wrote:
>> Theodore Tso schrieb:
>>
>> (...)
>>
>>> The following ld_preload can help in some cases.  Mutt has this hack
>>> encoded in for maildir directories, which helps.
>> It doesn't work very reliable for me.
>>
>> For some reason, it hangs for me sometimes (doesn't remove any files, rm
>> -rf just stalls), or segfaults.
> 
> You can go the low-tech route (assuming your file names don't have spaces in 
> them)
> 
> find . -printf "%i %p\n" | sort -n | awk '{print $2}' | xargs rm

Why should it make a difference?

Does "find" find filenames/paths faster than "rm -r"?

Or is "find once/remove once" faster than "find files/rm files/find 
files/rm files/...", which I suppose "rm -r" does?


-- 
Tomasz Chmielewski
http://wpkg.org
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