Thread (105 messages) 105 messages, 7 authors, 2008-09-22

Re: [PATCH] tcp FRTO: in-order-only "TCP proxy" fragility workaround

From: Dâniel Fraga <hidden>
Date: 2008-08-28 21:49:30
Also in: netfilter-devel

Possibly related (same subject, not in this thread)

On Tue, 26 Aug 2008 23:40:58 +0300 (EEST)
"Ilpo Järvinen" [off-list ref] wrote:
while [ : ]; do
	date "+%s.%N"
	cat /proc/net/{netstat,snmp,tcp}
	sleep 1
done
	Ok; Let's try again, now with more data (I hope):

	1) tcpdump (just port 995):

http://www.abusar.org/stall/dump-client
http://www.abusar.org/stall/dump-server

http://www.abusar.org/stall/dump-server-loopback

	I don't know if loopback is useful, just in case...

	2) the above script :

http://www.abusar.org/stall/script-client-log.txt
http://www.abusar.org/stall/script-server-log.txt

	3) and strace from the client Claws Mail:

http://www.abusar.org/stall/strace-client-claws-mail.txt

	I forgot to use the -r option in strace. But when Claws-mail
stalls, it gives the following multiple times:

read(4, 0xf48704, 4096)                 = -1 EAGAIN (Resource temporarily unavailable)
select(5, [4], [4], NULL, NULL)         = 1 (out [4])
writev(4, [{"xxxxxxxxxxxxxxx"..., 108}], 1) = 108
select(5, [4], [], NULL, NULL)          = 1 (in [4])
read(4, "xxxxxxxxxxxxxxxxxxxxxx"..., 4096) = 108

	Well, I hope this time you have more information and I hope I didn't forget anything. 
If not, let's keep trying.

	Important: these data were collected with frto disabled (0) and htb disabled too. So
it isn't related to frto, neither htb.

	Thank you!

-- 
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help