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Date: Mon, 30 Nov 2009 11:22:38 -0800 From: ebiederm@...ssion.com (Eric W. Biederman) To: hadi@...erus.ca Cc: David Miller <davem@...emloft.net>, netdev@...r.kernel.org, Daniel Lezcano <dlezcano@...ibm.com>, Alexey Dobriyan <adobriyan@...il.com>, Patrick McHardy <kaber@...sh.net> Subject: Re: [PATCH 0/20] Batch network namespace cleanup jamal <hadi@...erus.ca> writes: > 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? Yes. Eric -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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