From: Christoph Hellwig <hch@infradead.org>
To: Jan Engelhardt <jengelh@medozas.de>
Cc: xfs@oss.sgi.com
Subject: Re: Mounted xfs slows down block device
Date: Thu, 3 Sep 2009 11:48:39 -0400 [thread overview]
Message-ID: <20090903154839.GC16715@infradead.org> (raw)
In-Reply-To: <alpine.LSU.2.00.0908251325410.9492@fbirervta.pbzchgretzou.qr>
Strange, as XFS doesn't actually use the block device mapping at all,
so all the caching doesn't interact with each other. Maybe some
throtteling code in the VM doesn't like these parallel accesses.
But I need to add that reading the block device on a mounted filesystem
is not a good idea anyay - you will not get any sort of concistency
guarantee.
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prev parent reply other threads:[~2009-09-03 15:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-25 15:50 Mounted xfs slows down block device Jan Engelhardt
2009-09-03 15:48 ` Christoph Hellwig [this message]
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