netdev - Re: regression: unregister

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Date:	Sun, 24 May 2009 18:12:40 -0400
From:	Benjamin LaHaise <bcrl@...et.ca>
To:	Eric Dumazet <dada1@...mosbay.com>
Cc:	Denys Fedoryschenko <denys@...p.net.lb>, netdev@...r.kernel.org
Subject: Re: regression: unregister_netdev() unusably slow

On Mon, May 25, 2009 at 12:07:07AM +0200, Eric Dumazet wrote:
> Maybe your HZ is too low ? Changing to 1000 HZ helps a lot

HZ is set to 1000.  I turned off CONFIG_NO_HZ

> Also your hotplug config might do strange things at device removal ?

If it were CPU bound, maybe, but this behaviour is tied to the kernel 
version in use.

> What distro do you use ?

It's an older Fedora 7 install inside kvm on a Fedora 10 host running 
2.6.30-rc7.

		-ben
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