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From: Jim Rees <rees@umich.edu>
To: Cedric Blancher <cedric.blancher@gmail.com>
Cc: Linux NFS Mailing List <linux-nfs@vger.kernel.org>
Subject: Re: Tuning Linux NFSv4 for high latency connections?
Date: Wed, 23 Apr 2014 23:12:16 -0400	[thread overview]
Message-ID: <20140424031216.GA18817@umich.edu> (raw)
In-Reply-To: <CALXu0UcdfrvCajbAagGLV=dP=Kk3VWeR4VS5Wna44UroxM4JAQ@mail.gmail.com>

Cedric Blancher wrote:

  Are there any options to improve the Linux NFSv4 performance over a
  high latency connection?

We did some work along these lines at CITI years ago. As I remember, the
main thing was to increase net.ipv4.tcp_[rw]mem on the server side, because
tcp auto-tuning was being defeated. This may be less of an issue with your
work load, which sounds like many small files rather than one big one.  In
theory, NFSv4 delegations should help, but I don't know how well that works.

  parent reply	other threads:[~2014-04-24  3:12 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-04-23 18:01 Tuning Linux NFSv4 for high latency connections? Cedric Blancher
2014-04-23 20:24 ` Malahal Naineni
2014-04-23 20:30   ` Cedric Blancher
2014-04-23 20:44     ` Malahal Naineni
2014-04-23 21:04       ` Cedric Blancher
2014-04-23 21:15         ` Malahal Naineni
2014-04-23 22:14           ` Cedric Blancher
2014-04-23 22:57             ` Malahal Naineni
2014-04-24  3:12 ` Jim Rees [this message]
2014-04-24 17:22   ` Cedric Blancher
2014-04-28  5:23     ` Dean
2014-04-28 10:35       ` Jim Rees

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