From: Ben Greear <greearb@candelatech.com>
To: Jamal Hadi <hadi@shell.cyberus.ca>
Cc: "David S. Miller" <davem@redhat.com>, netdev@oss.sgi.com
Subject: Re: gettime: Was (Re: Route cache performance under stress
Date: Wed, 11 Jun 2003 08:57:24 -0700 [thread overview]
Message-ID: <3EE75164.8030500@candelatech.com> (raw)
In-Reply-To: <20030611065255.L39678@shell.cyberus.ca>
Jamal Hadi wrote:
> Ok, time to go into another separate thread ;->
>
> Sounds like a good idea.
>
> if (skbneedstimestamp)
> do_gettimeofday(&skb->stamp);
> else
> defertimestamp()
>
> For defertimestamp() would it be feasible that you store only the
> jiffies value in the skb then get timeofday later and somehow
> compensate for the difference? Seems very doable to me.
>
> Question is when do you decide skbneedstimestamp?
> Is it when the device is in promiscous mode or do it in ip or icmp etc?
>
> cheers,
> jamal
Jiffies is not nearly precise enough. You need something with
usec precision at least.
If we make a macro to read the value (converting as needed), and just
change all the readers to use that macro, then we don't have to make any
interesting decisions in the networking core.
Ben
--
Ben Greear <greearb@candelatech.com> <Ben_Greear AT excite.com>
President of Candela Technologies Inc http://www.candelatech.com
ScryMUD: http://scry.wanfear.com http://scry.wanfear.com/~greear
next prev parent reply other threads:[~2003-06-11 15:57 UTC|newest]
Thread overview: 216+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <87d6iit4g7.fsf@deneb.enyo.de>
[not found] ` <20030517.150933.74723581.davem@redhat.com>
[not found] ` <87iss87gqd.fsf@deneb.enyo.de>
2003-05-18 9:31 ` Route cache performance under stress David S. Miller
2003-05-19 17:36 ` Jamal Hadi
2003-05-19 19:18 ` Ralph Doncaster
2003-05-19 22:37 ` Jamal Hadi
2003-05-20 1:10 ` Simon Kirby
2003-05-20 1:14 ` David S. Miller
2003-05-20 1:23 ` Jamal Hadi
2003-05-20 1:24 ` David S. Miller
2003-05-20 2:13 ` Jamal Hadi
2003-05-20 5:01 ` Pekka Savola
2003-05-20 11:47 ` Jamal Hadi
2003-05-20 11:55 ` Pekka Savola
2003-05-20 6:46 ` David S. Miller
2003-05-20 12:04 ` Jamal Hadi
2003-05-21 0:36 ` David S. Miller
2003-05-21 13:03 ` Jamal Hadi
2003-05-23 5:42 ` David S. Miller
2003-05-22 8:40 ` Simon Kirby
2003-05-22 8:58 ` David S. Miller
2003-05-22 10:40 ` David S. Miller
2003-05-22 11:15 ` Martin Josefsson
2003-05-23 1:00 ` David S. Miller
2003-05-23 1:01 ` David S. Miller
2003-05-23 8:21 ` Andi Kleen
2003-05-23 8:22 ` David S. Miller
2003-05-23 9:03 ` Andi Kleen
2003-05-23 9:59 ` David S. Miller
2003-05-24 0:41 ` Andrew Morton
2003-05-26 2:29 ` David S. Miller
2003-05-22 11:44 ` Simon Kirby
2003-05-22 13:03 ` Martin Josefsson
2003-05-23 0:55 ` David S. Miller
2003-05-22 22:33 ` David S. Miller
2003-05-29 20:51 ` Simon Kirby
2003-06-02 10:58 ` Robert Olsson
2003-06-02 15:18 ` Simon Kirby
2003-06-02 16:36 ` Robert Olsson
2003-06-02 18:05 ` Simon Kirby
2003-06-09 17:21 ` David S. Miller
2003-06-09 17:19 ` David S. Miller
2003-05-23 0:59 ` David S. Miller
2003-05-26 7:18 ` Florian Weimer
2003-05-26 7:29 ` David S. Miller
2003-05-26 9:34 ` Florian Weimer
2003-05-27 6:32 ` David S. Miller
2003-06-08 11:39 ` Florian Weimer
2003-06-08 12:05 ` David S. Miller
2003-06-08 13:10 ` Florian Weimer
2003-06-08 23:49 ` Simon Kirby
2003-06-08 23:55 ` CIT/Paul
2003-06-09 3:15 ` Jamal Hadi
2003-06-09 5:27 ` CIT/Paul
2003-06-09 5:58 ` David S. Miller
2003-06-09 6:28 ` CIT/Paul
2003-06-09 6:28 ` David S. Miller
2003-06-09 16:23 ` Stephen Hemminger
2003-06-09 16:37 ` David S. Miller
2003-06-09 7:13 ` Simon Kirby
2003-06-09 8:10 ` CIT/Paul
2003-06-09 8:27 ` Simon Kirby
2003-06-09 19:38 ` CIT/Paul
2003-06-09 21:30 ` David S. Miller
2003-06-09 22:19 ` Simon Kirby
2003-06-09 22:54 ` Robert Olsson
2003-06-13 6:21 ` David S. Miller
2003-06-13 10:40 ` Robert Olsson
2003-06-15 6:36 ` David S. Miller
2003-06-17 17:03 ` Robert Olsson
2003-06-09 22:56 ` CIT/Paul
2003-06-09 23:05 ` David S. Miller
2003-06-10 13:41 ` Robert Olsson
2003-06-10 0:03 ` Jamal Hadi
2003-06-10 0:32 ` Ralph Doncaster
2003-06-10 1:15 ` Jamal Hadi
2003-06-10 2:45 ` Ralph Doncaster
2003-06-10 3:23 ` Ben Greear
2003-06-10 3:41 ` Ralph Doncaster
2003-06-10 18:10 ` Ralph Doncaster
2003-06-10 18:21 ` Ben Greear
2003-06-10 4:34 ` Simon Kirby
2003-06-10 11:01 ` Jamal Hadi
2003-06-10 11:28 ` Jamal Hadi
2003-06-10 13:18 ` Ralph Doncaster
2003-06-10 16:10 ` David S. Miller
2003-06-10 10:53 ` Jamal Hadi
2003-06-10 11:41 ` chas williams
2003-06-10 16:27 ` David S. Miller
2003-06-10 16:57 ` chas williams
2003-06-10 11:41 ` Pekka Savola
2003-06-10 11:58 ` John S. Denker
2003-06-10 12:12 ` Jamal Hadi
2003-06-10 16:33 ` David S. Miller
2003-06-10 12:07 ` Jamal Hadi
2003-06-10 15:29 ` Ralph Doncaster
2003-06-11 19:48 ` Florian Weimer
2003-06-11 19:40 ` CIT/Paul
2003-06-11 21:09 ` Florian Weimer
2003-06-10 13:10 ` Ralph Doncaster
2003-06-10 13:36 ` Jamal Hadi
2003-06-10 14:03 ` Ralph Doncaster
2003-06-10 16:38 ` David S. Miller
2003-06-10 16:39 ` David S. Miller
2003-06-10 18:41 ` Florian Weimer
2003-06-11 11:47 ` Was (Re: " Jamal Hadi
2003-06-11 18:41 ` Real World Routers 8-) Florian Weimer
2003-06-10 15:53 ` Route cache performance under stress David S. Miller
2003-06-10 16:15 ` 3c59x (was Route cache performance under stress) Bogdan Costescu
2003-06-10 16:20 ` Andi Kleen
2003-06-10 16:23 ` Jeff Garzik
2003-06-10 17:02 ` 3c59x David S. Miller
2003-06-10 17:16 ` 3c59x Jeff Garzik
2003-06-10 17:14 ` 3c59x David S. Miller
2003-06-10 17:25 ` 3c59x Jeff Garzik
2003-06-10 17:30 ` 3c59x David S. Miller
2003-06-10 19:20 ` 3c59x Jeff Garzik
2003-06-10 19:21 ` 3c59x David S. Miller
2003-06-10 17:18 ` 3c59x Andi Kleen
2003-06-10 17:29 ` 3c59x chas williams
2003-06-10 17:31 ` 3c59x David S. Miller
2003-06-10 17:39 ` 3c59x chas williams
2003-06-10 17:43 ` 3c59x David S. Miller
2003-06-11 17:52 ` Route cache performance under stress Robert Olsson
2003-06-10 1:53 ` Simon Kirby
2003-06-10 3:18 ` Ralph Doncaster
2003-06-10 16:06 ` David S. Miller
2003-06-10 15:56 ` David S. Miller
2003-06-10 16:45 ` 3c59x (was Route cache performance under stress) Bogdan Costescu
2003-06-10 16:49 ` Andi Kleen
2003-06-11 9:54 ` Robert Olsson
2003-06-11 10:05 ` Andi Kleen
2003-06-11 10:38 ` Robert Olsson
2003-06-11 12:08 ` Jamal Hadi
2003-06-10 17:12 ` 3c59x David S. Miller
2003-06-10 17:19 ` Route cache performance under stress Ralph Doncaster
2003-06-10 15:49 ` David S. Miller
2003-06-10 17:33 ` Ralph Doncaster
2003-06-10 17:32 ` David S. Miller
2003-06-10 18:34 ` Robert Olsson
2003-06-10 18:57 ` David S. Miller
2003-06-10 19:53 ` Robert Olsson
2003-06-10 21:36 ` CIT/Paul
2003-06-10 21:39 ` Ralph Doncaster
2003-06-10 22:20 ` David S. Miller
2003-06-10 23:58 ` Ralph Doncaster
2003-06-10 23:57 ` David S. Miller
2003-06-11 0:41 ` Ralph Doncaster
2003-06-11 0:58 ` David S. Miller
2003-06-11 0:58 ` David S. Miller
2003-06-11 0:51 ` Ben Greear
2003-06-11 1:01 ` David S. Miller
2003-06-11 1:15 ` Ben Greear
2003-06-11 1:22 ` David S. Miller
2003-06-11 1:51 ` Ben Greear
2003-06-11 3:33 ` David S. Miller
2003-06-11 11:54 ` gettime: Was (Re: " Jamal Hadi
2003-06-11 12:08 ` Andi Kleen
2003-06-12 3:30 ` David S. Miller
2003-06-12 6:32 ` Ben Greear
2003-06-12 8:46 ` David S. Miller
2003-06-11 15:57 ` Ben Greear [this message]
2003-06-12 3:29 ` David S. Miller
2003-06-11 1:17 ` Ralph Doncaster
2003-06-11 1:23 ` David S. Miller
2003-06-11 7:28 ` Andi Kleen
2003-06-11 7:25 ` Andi Kleen
2003-06-11 17:40 ` Robert Olsson
2003-06-13 5:38 ` David S. Miller
2003-06-13 10:22 ` Robert Olsson
2003-06-13 17:15 ` Robert Olsson
2003-06-12 6:45 ` David S. Miller
2003-06-12 13:56 ` Robert Olsson
2003-06-12 21:35 ` David S. Miller
2003-06-13 10:50 ` Robert Olsson
2003-06-10 0:56 ` Ralph Doncaster
2003-06-09 11:38 ` Jamal Hadi
2003-06-09 11:55 ` David S. Miller
2003-06-09 12:18 ` Jamal Hadi
2003-06-09 12:32 ` David S. Miller
2003-06-09 13:22 ` Jamal Hadi
2003-06-09 13:22 ` David S. Miller
2003-06-09 8:56 ` David S. Miller
2003-06-09 22:39 ` Robert Olsson
2003-06-09 6:25 ` David S. Miller
2003-06-09 6:59 ` Simon Kirby
2003-06-09 7:03 ` David S. Miller
2003-06-09 13:04 ` Ralph Doncaster
2003-06-09 13:26 ` Jamal Hadi
2003-06-09 5:44 ` David S. Miller
2003-06-09 5:51 ` CIT/Paul
2003-06-09 6:03 ` David S. Miller
2003-06-09 6:52 ` Simon Kirby
2003-06-09 6:56 ` David S. Miller
2003-06-09 7:36 ` Simon Kirby
2003-06-09 8:18 ` Simon Kirby
2003-06-09 8:22 ` David S. Miller
2003-06-09 8:31 ` Simon Kirby
2003-06-09 9:01 ` David S. Miller
2003-06-09 9:47 ` Andi Kleen
2003-06-09 10:03 ` David S. Miller
2003-06-09 10:13 ` Andi Kleen
2003-06-09 10:13 ` David S. Miller
2003-06-09 10:40 ` YOSHIFUJI Hideaki / 吉藤英明
2003-06-09 10:40 ` David S. Miller
2003-06-09 14:14 ` David S. Miller
2003-06-09 6:47 ` Simon Kirby
2003-06-09 6:49 ` David S. Miller
2003-06-09 13:28 ` Ralph Doncaster
2003-06-09 16:30 ` Simon Kirby
2003-06-17 20:58 ` Florian Weimer
2003-06-09 5:38 ` David S. Miller
2003-06-10 3:05 ` Steven Blake
2003-06-12 6:31 ` David S. Miller
2003-06-08 17:58 ` Pekka Savola
2003-05-21 0:09 ` Simon Kirby
2003-05-21 0:13 ` David S. Miller
2003-05-26 9:29 ` Florian Weimer
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