From: netdev-bounce@oss.sgi.com
To: undisclosed-recipients:;
Date: Tue, 29 Oct 2002 15:45:07 +1100 (EST) [thread overview]
raw)
> '50 clients *each* streaming at ~4.4MBps', better make that clear,
> otherwise something is *very* broken. Also mention that you have an e1000
> card which does not do outgoing checksumming.
just to clearify
s/MBps/Mbps/
s/bps/bits per second/
> You'd think that a kernel would be able to do 250megabits of TCP checksums
> though.
>
> > ...adding the whole profile output - sorted by the first column this
> > time...
> >
> > 905182 total 0.4741
> > 121426 csum_partial_copy_generic 474.3203
> > 93633 default_idle 1800.6346
> > 74665 do_wp_page 111.1086
>
> Perhaps the 'copy' also entails grabbing the page from disk, leading to
> inflated csum_partial_copy_generic stats?
I really don't know. Just to clearify a little more - the server app uses
O_DIRECT to read the data before tossing it to the socket.
> Where are you serving from?
What do you mean?
roy
--
Roy Sigurd Karlsbakk, Datavaktmester
ProntoTV AS - http://www.pronto.tv/
Tel: +47 9801 3356
Computers are like air conditioners.
They stop working when you open Windows.
WARNING: multiple messages have this Message-ID (diff)
From: netdev-bounce@oss.sgi.com
To: undisclosed-recipients: ;
Subject: (no subject)
Date: Tue, 29 Oct 2002 15:45:07 +1100 (EST) [thread overview]
Message-ID: <20021029044507.A18D012C5A5@blammo.its.monash.edu.au> (raw)
> '50 clients *each* streaming at ~4.4MBps', better make that clear,
> otherwise something is *very* broken. Also mention that you have an e1000
> card which does not do outgoing checksumming.
just to clearify
s/MBps/Mbps/
s/bps/bits per second/
> You'd think that a kernel would be able to do 250megabits of TCP checksums
> though.
>
> > ...adding the whole profile output - sorted by the first column this
> > time...
> >
> > 905182 total 0.4741
> > 121426 csum_partial_copy_generic 474.3203
> > 93633 default_idle 1800.6346
> > 74665 do_wp_page 111.1086
>
> Perhaps the 'copy' also entails grabbing the page from disk, leading to
> inflated csum_partial_copy_generic stats?
I really don't know. Just to clearify a little more - the server app uses
O_DIRECT to read the data before tossing it to the socket.
> Where are you serving from?
What do you mean?
roy
--
Roy Sigurd Karlsbakk, Datavaktmester
ProntoTV AS - http://www.pronto.tv/
Tel: +47 9801 3356
Computers are like air conditioners.
They stop working when you open Windows.
next reply other threads:[~2002-10-29 5:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-29 4:45 netdev-bounce [this message]
2002-10-29 4:45 ` (no subject) netdev-bounce
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=20021029044507.A18D012C5A5@blammo.its.monash.edu.au \
--to=netdev-bounce@oss.sgi.com \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.