From: jamal <hadi@cyberus.ca>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: David Miller <davem@davemloft.net>,
netdev@vger.kernel.org, Daniel Lezcano <dlezcano@fr.ibm.com>,
Alexey Dobriyan <adobriyan@gmail.com>,
Patrick McHardy <kaber@trash.net>
Subject: Re: [PATCH 0/20] Batch network namespace cleanup
Date: Mon, 30 Nov 2009 07:44:03 -0500 [thread overview]
Message-ID: <1259585043.873.21.camel@bigi> (raw)
In-Reply-To: <m1ljhodbtw.fsf@fess.ebiederm.org>
On Sun, 2009-11-29 at 17:46 -0800, Eric W. Biederman wrote:
>
> Recently Jamal and Daniel perform some experiments and found that
> large numbers of network namespace exiting simultaneously is very
> inefficient. 24+ minutes in some configurations. The cpu overhead
> was negligible but it results in long hold times of net_mutex, and
> memory being consumed a long time after the last user has gone away.
>
> I looked into it and discovered that by batching network namespace
> cleanups I can reduce the time for 4k network namespaces exiting from
> 5-7 minutes in my configuration to 44 seconds.
Excellent work Eric. I have time today so i can test these patches
status quo vs.
This is against net-next?
cheers,
jamal
next prev parent reply other threads:[~2009-11-30 12:44 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-30 1:46 [PATCH 0/20] Batch network namespace cleanup Eric W. Biederman
2009-11-30 8:07 ` Eric Dumazet
2009-11-30 8:09 ` David Miller
2009-11-30 8:17 ` Eric W. Biederman
2009-11-30 8:48 ` Eric W. Biederman
2009-11-30 8:25 ` [PATCH 02/20] net: Implement for_each_netdev_reverse Eric W. Biederman
2009-11-30 8:25 ` [PATCH 03/20] net: Batch network namespace destruction Eric W. Biederman
2009-11-30 8:25 ` [PATCH 04/20] net: Automatically allocate per namespace data Eric W. Biederman
2009-11-30 8:25 ` [PATCH 05/20] net: Simplify loopback and improve batching Eric W. Biederman
2009-11-30 8:25 ` [PATCH 06/20] net: Simplfy default_device_exit " Eric W. Biederman
2009-11-30 12:44 ` jamal [this message]
2009-11-30 19:22 ` [PATCH 0/20] Batch network namespace cleanup Eric W. Biederman
2009-12-01 0:34 ` David Miller
2009-12-01 0:55 ` Eric W. Biederman
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