linux-kernel - Re: rsync causing high loads on 2.6.36-rc4

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Message-Id: <201009211918.02364.thomas@fjellstrom.ca>
Date:	Tue, 21 Sep 2010 19:18:02 -0600
From:	Thomas Fjellstrom <thomas@...llstrom.ca>
To:	linux-kernel@...r.kernel.org
Subject: Re: rsync causing high loads on 2.6.36-rc4

On September 21, 2010, Thomas Fjellstrom wrote:
> This isn't something I remember happening with older kernels, but I just
> started an rsync from an nfs share over GbE, to a external SATA drive over
> usb 2, and I'm seeing both of my laptop's cores hitting 80-100% cpu use,
> two rsync processes are using 20-40% each, some kworker's are using tiny
> bits (2-10%), and kswapd0 is hovering around 5%. Quite a lot of the time
> seems to be io- wait. load average is almost at 6.
> 
> This is a dual core T9400 core2duo laptop, with 4GB ram, running full amd64
> (64bit 2.6.36-rc4 kernel and userspace).
> 
> Its impacting desktop interactivity quite a lot.

It's not quite as bad with a regular cp, but it does affect my laptop in the 
same way.

-- 
Thomas Fjellstrom
thomas@...llstrom.ca
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