From: Jens Axboe <jens.axboe@oracle.com>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: James Morris <jmorris@namei.org>,
"David S. Miller" <davem@davemloft.net>,
netdev@vger.kernel.org
Subject: Re: TCP stalls in current git, possibly splice related
Date: Wed, 18 Jul 2007 12:49:16 +0200 [thread overview]
Message-ID: <20070718104916.GJ11657@kernel.dk> (raw)
In-Reply-To: <1184711770.4658.5.camel@johannes.berg>
On Wed, Jul 18 2007, Johannes Berg wrote:
> On Mon, 2007-07-16 at 14:02 +0200, Jens Axboe wrote:
>
> > Yep, it's a sender thing, so upgrading the receiver will not change
> > anything.
>
> Ok, I upgraded, but that didn't help. And in fact, I don't see how it
> could have since synergy doesn't use splice or sendfile. I should've
> thought of that right away, sorry.
>
> It seems that packets are actually coming in during the time that my
> mouse hangs though (ran wireshark in parallel and saw no pauses in the
> timeline.) Hence, it actually seems to be on the receiver side, and
> running the synergy client under strace reveals that during the time my
> mouse hangs it's in poll() waiting for input on the tcp socket. sysrg-t
> doesn't show anything useful, it's just scheduling waiting for data.
> According to wireshark data is sent, but it never shows up at the
> application layer.
OK, then we can put splice off the hook at least :-)
If it's easily reproducible (and it sounds like it), then a git bisect
might be the easiest way forward.
--
Jens Axboe
next prev parent reply other threads:[~2007-07-18 10:49 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-12 20:12 TCP stalls in current git, possibly splice related James Morris
2007-07-12 20:52 ` David Miller
2007-07-13 2:26 ` James Morris
2007-07-13 5:36 ` Jens Axboe
2007-07-13 6:26 ` Jens Axboe
2007-07-13 9:25 ` Jens Axboe
2007-07-13 10:02 ` Johannes Berg
2007-07-13 11:05 ` Jens Axboe
2007-07-13 12:23 ` James Morris
2007-07-13 21:55 ` Johannes Berg
2007-07-16 8:45 ` Johannes Berg
2007-07-16 12:02 ` Jens Axboe
2007-07-17 22:36 ` Johannes Berg
2007-07-18 10:49 ` Jens Axboe [this message]
2007-07-18 10:58 ` Johannes Berg
2007-07-18 21:24 ` Johannes Berg
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=20070718104916.GJ11657@kernel.dk \
--to=jens.axboe@oracle.com \
--cc=davem@davemloft.net \
--cc=jmorris@namei.org \
--cc=johannes@sipsolutions.net \
--cc=netdev@vger.kernel.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).