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From: crocket <crockabiscuit@gmail.com>
To: linux-nfs@vger.kernel.org
Subject: NFSv3 client caches dozens or hundreds of megabytes before sending a write request to NFS server.
Date: Sun, 17 Apr 2011 18:23:26 +0900	[thread overview]
Message-ID: <BANLkTi=3mcfWuFhoCzetzuguA2vA02AShg@mail.gmail.com> (raw)

Let me explain my network configuration.

Internet <--------------------> eth0 | the linux router | eth1
<------------------------------> eth0 | the desktop.

The linux router is actually a proper computer but not a router that
has linux firmware.
eth1 on the router and eth0 on the desktop are both full-duplex at 100Mbps.
The full-duplex connection is confirmed using netcat like
http://imagebin.org/148650
And they also remain full-duplex during NFS transfers according to "ethtool".

The router runs an NFS server, and the desktop uses an NFS client.

On the desktop, if I download files from the internet to the NFS
server, the client caches dozens or hundreds of megabytes before
sending data to the server like http://imagebin.org/148648
As a result, the download pauses frequently to send data to the NFS
server until the download is finished.
I want NFS client to forward downloaded data to the server immediately
instead of after caching.
In other words, I want NFS transfer to be http://imagebin.org/148650
but not http://imagebin.org/148648

Does anybody know how to solve this issue?

             reply	other threads:[~2011-04-17  9:23 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-04-17  9:23 crocket [this message]
2011-04-17 13:21 ` NFSv3 client caches dozens or hundreds of megabytes before sending a write request to NFS server crocket

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