From: John Heffner <jheffner@psc.edu>
To: Stephen Hemminger <shemminger@osdl.org>
Cc: netdev@vger.kernel.org
Subject: Re: [PATCH] Bound TSO defer time (resend)
Date: Tue, 17 Oct 2006 00:18:33 -0400 [thread overview]
Message-ID: <45345999.4000300@psc.edu> (raw)
In-Reply-To: <20061016202035.6d55b96e@localhost.localdomain>
Stephen Hemminger wrote:
> On Mon, 16 Oct 2006 20:53:20 -0400 (EDT)
> John Heffner <jheffner@psc.edu> wrote:
>> This patch limits the amount of time you will defer sending a TSO segment
>> to less than two clock ticks, or the time between two acks, whichever is
>> longer.
>
> Okay, but doing any timing on clock ticks makes the behavior dependent
> on the value of HZ which doesn't seem desirable. Should this be based
> on RTT or a real-time values?
It would be nice to use a high res clock so you don't depend on HZ, but
this is still expensive on most SMP arch's as I understand it.
-John
next prev parent reply other threads:[~2006-10-17 4:18 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-17 0:53 [PATCH] Bound TSO defer time (resend) John Heffner
2006-10-17 3:20 ` Stephen Hemminger
2006-10-17 4:18 ` John Heffner [this message]
2006-10-17 5:35 ` David Miller
2006-10-17 12:22 ` John Heffner
2006-10-19 3:39 ` David Miller
2006-10-17 12:58 ` [PATCH] [NET] Size listen hash tables using backlog hint Eric Dumazet Hi
2006-10-18 7:38 ` [PATCH] [NET] inet_peer : group together avl_left, avl_right, v4daddr to speedup lookups on some CPUS Eric Dumazet
2006-10-18 16:35 ` [PATCH] [NET] reduce per cpu ram used for loopback stats Eric Dumazet
2006-10-18 17:00 ` [PATCH, resent] " Eric Dumazet
2006-10-19 3:53 ` David Miller
2006-10-19 3:53 ` [PATCH] " David Miller
2006-10-19 3:44 ` [PATCH] [NET] inet_peer : group together avl_left, avl_right, v4daddr to speedup lookups on some CPUS David Miller
2006-10-19 10:57 ` Eric Dumazet
2006-10-19 15:45 ` [PATCH] [NET] One NET_INC_STATS() could be NET_INC_STATS_BH in tcp_v4_err() Eric Dumazet
2006-10-20 7:22 ` David Miller
2006-10-20 14:21 ` Arnaldo Carvalho de Melo
2006-10-20 7:28 ` [PATCH] [NET] inet_peer : group together avl_left, avl_right, v4daddr to speedup lookups on some CPUS David Miller
2006-10-19 3:31 ` [PATCH] [NET] Size listen hash tables using backlog hint David Miller
2006-10-19 4:54 ` Stephen Hemminger
2006-10-19 5:08 ` David Miller
2006-10-19 5:12 ` Eric Dumazet
2006-10-19 6:12 ` David Miller
2006-10-19 6:34 ` Eric Dumazet
2006-10-19 6:57 ` David Miller
2006-10-19 8:29 ` Eric Dumazet
2006-10-19 8:41 ` David Miller
2006-10-19 9:11 ` Eric Dumazet
2006-10-19 9:27 ` Eric Dumazet
2006-10-20 7:27 ` David Miller
2006-10-18 15:37 ` [PATCH] Bound TSO defer time (resend) Andi Kleen
2006-10-18 16:40 ` Stephen Hemminger
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=45345999.4000300@psc.edu \
--to=jheffner@psc.edu \
--cc=netdev@vger.kernel.org \
--cc=shemminger@osdl.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).