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From: Florian Weimer <fw@deneb.enyo.de>
To: Alex Bligh - linux-kernel <linux-kernel@alex.org.uk>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: 3ware 9550SX problems - mke2fs incredibly slow writing last third of inode tables
Date: Tue, 01 Nov 2005 13:45:19 +0100	[thread overview]
Message-ID: <87oe54cza8.fsf@mid.deneb.enyo.de> (raw)
In-Reply-To: <BEDEA151E8B1D6CEDD295442@[192.168.100.25]> (Alex Bligh's message of "Sun, 30 Oct 2005 21:10:56 +0000")

* Alex Bligh:

> All seems to go well until I try and do mke2fs. This appears to work,
> and tries to write the inode tables. However, at (about) 3400 inodes
> (of 11176), it slows to a crawl, writing one table every 10 seconds.
> strace shows it is still running, and no errors are being reported.
> However, it seems very sick.

In my experience, the 3ware SATA controllers which are not NCQ-capable
have very, very lousy write performance with some drives, unless you
enable the write cache (which is, of course, a bit dangerous without
UPS or battery backup on the controller).

  reply	other threads:[~2005-11-01 12:45 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-10-30 21:10 3ware 9550SX problems - mke2fs incredibly slow writing last third of inode tables Alex Bligh - linux-kernel
2005-11-01 12:45 ` Florian Weimer [this message]
2005-11-01 17:04   ` Lawrence Walton
2005-11-01 17:13     ` Florian Weimer
2005-11-02  0:11       ` Alex Bligh - linux-kernel
2005-11-01 22:54         ` Jeff V. Merkey
2005-11-02 22:39           ` Alex Bligh - linux-kernel
     [not found] <BEDEA151E8B1D6CEDD295442@192.168.100.25>
2005-11-02 22:59 ` adam radford
2005-11-05  9:06   ` Alex Bligh - linux-kernel
2005-11-05 17:01     ` Jeff V. Merkey
2005-11-07 21:53     ` Florian Weimer

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