From: bert hubert <ahu@ds9a.nl>
To: Linus Torvalds <torvalds@osdl.org>
Cc: Jeff Sipek <jeffpc@optonline.net>,
Kernel Mailing List <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@digeo.com>,
Dave Jones <davej@codemonkey.org.uk>,
Jeff Garzik <jgarzik@pobox.com>
Subject: Re: [PATCH - RFC] [1/5] 64-bit network statistics - generic net
Date: Fri, 4 Jul 2003 09:05:41 +0200 [thread overview]
Message-ID: <20030704070541.GA20475@outpost.ds9a.nl> (raw)
In-Reply-To: <Pine.LNX.4.44.0307032005340.8468-100000@home.osdl.org>
On Thu, Jul 03, 2003 at 08:08:03PM -0700, Linus Torvalds wrote:
> Please do this in user space. The "overflow every 2^32 packets" thing is
> _not_ a problem, if you just gather the statistics at any kind of
> reasonable interval.
At 114 megabits/second, we pass the mrtg threshold of an overflow within 5
minutes. A 1 gigabit link will do this once every 34 seconds. There are 10
gigabit adaptors out there which may need to be polled once every 3 seconds
then.
> Remember: "perfect is the enemy of good".
Pretty good is not however. Can't we do what we do for jiffies where we only
do a 64 bit operation very seldomly?
Regards,
bert
--
http://www.PowerDNS.com Open source, database driven DNS Software
http://lartc.org Linux Advanced Routing & Traffic Control HOWTO
next prev parent reply other threads:[~2003-07-04 6:51 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-04 2:31 [PATCH - RFC] [1/5] 64-bit network statistics - generic net Jeff Sipek
2003-07-04 2:46 ` Jeff Garzik
2003-07-04 6:02 ` Jeff Sipek
2003-07-04 3:08 ` Linus Torvalds
2003-07-04 5:27 ` Jeff Sipek
2003-07-04 7:05 ` bert hubert [this message]
2003-07-05 18:49 ` Jeff Sipek
2003-07-05 21:46 ` Ben Greear
2003-07-04 9:47 ` Jan-Benedict Glaw
2003-07-04 17:57 ` Jeff Sipek
2003-07-05 19:58 ` Bernd Eckenfels
2003-07-05 20:37 ` Jeff Sipek
2003-07-05 20:40 ` Jeff Garzik
2003-07-05 20:59 ` Jeff Sipek
2003-07-05 21:51 ` Francois Romieu
2003-07-05 22:39 ` Jeff Sipek
2003-07-05 23:44 ` Francois Romieu
2003-07-05 22:54 ` Roland Dreier
2003-07-05 21:41 ` Ben Greear
2003-07-06 7:27 ` Alan Cox
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