From: Benjamin LaHaise <bcrl@lhnet.ca>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Greg KH <greg@kroah.com>, Eric Dumazet <eric.dumazet@gmail.com>,
Octavian Purdila <opurdila@ixiacom.com>,
netdev@vger.kernel.org, Cosmin Ratiu <cratiu@ixiacom.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/3] sysfs directory scaling: rbtree for dirent name lookups
Date: Tue, 3 Nov 2009 16:56:50 -0500 [thread overview]
Message-ID: <20091103215650.GT8227@kvack.org> (raw)
In-Reply-To: <m1y6mn708g.fsf@fess.ebiederm.org>
On Tue, Nov 03, 2009 at 01:43:43PM -0800, Eric W. Biederman wrote:
> I guess in particular what I would expect is that if we can do 35000
> interfaces in 63s with an O(N^2) algorithm. Then we should be able to
> do 35000 interfaces with an O(NlogN) algorithm in under a second.
> Which for your application should make the time essentially flat in
> the number of interfaces.
That's the wrong way to interprete the numbers. The 35000 number of 63s is
the time that it takes 63s to add 5000 more interfaces in the 30,000 to
35,000 range. This includes the time required to add a point to point ip
route on the interface and bring the interface up.
-ben
next prev parent reply other threads:[~2009-11-03 21:56 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-01 16:31 [PATCH 1/3] sysfs directory scaling: rbtree for dirent name lookups Benjamin LaHaise
2009-11-01 16:32 ` [PATCH 2/3] sysfs directory scaling: doubly linked list for dirents Benjamin LaHaise
2009-11-01 16:33 ` [PATCH 2/3] sysfs directory scaling: count number of children dirs Benjamin LaHaise
2009-11-03 3:50 ` [PATCH 1/3] sysfs directory scaling: rbtree for dirent name lookups Greg KH
2009-11-03 6:14 ` Eric Dumazet
2009-11-03 7:01 ` [PATCH] sysctl: reduce ram usage by 40 % Eric Dumazet
2009-11-03 10:23 ` Eric W. Biederman
2009-11-03 16:07 ` [PATCH 1/3] sysfs directory scaling: rbtree for dirent name lookups Greg KH
2009-11-03 16:38 ` Octavian Purdila
2009-11-03 16:45 ` Benjamin LaHaise
2009-11-03 17:56 ` Greg KH
2009-11-03 22:28 ` Eric W. Biederman
2009-11-03 20:01 ` Benjamin LaHaise
2009-11-03 21:32 ` Eric W. Biederman
2009-11-03 21:43 ` Eric W. Biederman
2009-11-03 21:56 ` Benjamin LaHaise [this message]
2009-11-03 22:06 ` Eric Dumazet
2009-11-03 21:52 ` Benjamin LaHaise
2009-11-03 22:18 ` Eric W. Biederman
2009-11-03 10:41 ` Eric W. Biederman
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