From: "Paul Rolland" <rol@as2917.net>
To: "'Corey Minyard'" <minyard@acm.org>
Cc: <linux-kernel@vger.kernel.org>
Subject: Re: e100 latency, cpu cycle saver and e1000...
Date: Wed, 21 May 2003 16:15:35 +0200 [thread overview]
Message-ID: <011a01c31fa3$725354e0$3f00a8c0@witbe> (raw)
In-Reply-To: <3ECB87F5.8060808@acm.org>
Hello,
> My little program was crude at best.
Yes, I know, but it does exist !
> You have to take into account what the machines are doing.
> If you notice, the "Min" latency is about the same, so it's
> not a CPU cycle saver. The long "Max" latencies mean you
> probably have something on IP2 that is blocking the execution
> of the IP stack (for, say up to 4.5ms).
> Are all the machine completely quiesced except for the test program?
> Have you tried switching the network connections to see if it
> is in the network hardware?
Correct, machines are not idle... but
- they are doing globally the same work,
- this behavior is something I can reproduce test after test, since
I've started this morning...
I started using that because IP1 was exhibiting high latency yesterday
'til I rebooted it, and since it is working quite fine...
Of course, I can reboot also IP2, but I'd like to understand why
and how to avoid it later...
Regards,
Paul
next prev parent reply other threads:[~2003-05-21 14:02 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-21 8:51 Paul Rolland
2003-05-21 14:06 ` Corey Minyard
2003-05-21 14:15 ` Paul Rolland [this message]
2003-05-21 22:50 ` Zwane Mwaikambo
2003-05-22 5:49 ` Paul Rolland
2003-05-22 5:46 ` Zwane Mwaikambo
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='011a01c31fa3$725354e0$3f00a8c0@witbe' \
--to=rol@as2917.net \
--cc=linux-kernel@vger.kernel.org \
--cc=minyard@acm.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
all inboxes | Powered by JetHome®