From: "J. Bruce Fields" <bfields@fieldses.org>
To: Daniel Phillips <phillips@phunq.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: A peek at the future of storage
Date: Wed, 12 Dec 2007 12:46:13 -0500 [thread overview]
Message-ID: <20071212174613.GA16656@fieldses.org> (raw)
In-Reply-To: <200712120846.18320.phillips@phunq.net>
On Wed, Dec 12, 2007 at 08:46:18AM -0800, Daniel Phillips wrote:
> Incidentally, we ran our tests with 128 knfsd threads. The default of 8
> threads produces miserable performance on the SSD, which gave us a good
> scare on our initial test run. It would be very nice to implement an
> algorithm to scale the knfsd thread pool automatically, in order to
> eliminate this class of thing that can go wrong. If somebody became
> inspired to take on that little project that would be great, otherwise
> it is in our pipeline for, hmm, Christmas delivery. (Exactly which
> Christmas is left unspecified.)
People have proposed writing a daemon that just reads /proc/net/rpc/nfsd
periodically and uses that to adjust the number of threads from
userspace, probably subject to some limits in a config file someplace.
(Think that could do the job, or is there some reason this would be
easier in the kernel?)
--b.
next prev parent reply other threads:[~2007-12-12 17:46 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-12 16:46 A peek at the future of storage Daniel Phillips
2007-12-12 17:46 ` J. Bruce Fields [this message]
2007-12-12 18:02 ` Daniel Phillips
2007-12-12 18:39 ` Bernd Petrovitsch
2007-12-12 19:57 ` J. Bruce Fields
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