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Date: Wed, 18 Jul 2007 12:49:16 +0200 From: Jens Axboe <jens.axboe@...cle.com> To: Johannes Berg <johannes@...solutions.net> Cc: James Morris <jmorris@...ei.org>, "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org Subject: Re: TCP stalls in current git, possibly splice related 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 - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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