Gentoo Archives: gentoo-user

From: Grant <emailgrant@×××××.com>
To: Gentoo mailing list <gentoo-user@l.g.o>
Subject: Re: [gentoo-user] PMTUD
Date: Sun, 01 Sep 2013 12:09:20
Message-Id: CAN0CFw1bPDDkGMGXBi7f3+VBD6kmuRTtkxTyHQNUm9kmVKgDgQ@mail.gmail.com
In Reply to: Re: [gentoo-user] PMTUD by Mick
1 >> > If you are still troubled by the proxy connection stalling problem, have
2 >> > you tried transferring large files over the network using scp/sftp to
3 >> > see if you are also getting similar symptoms? This would isolate it to
4 >> > the application level (squid) or if the problem remains would point to
5 >> > network configuration issues.
6 >>
7 >> How can I make this determination? I'm testing a 50MB scp over hotel
8 >> wifi from my laptop to the remote proxy server now (with squid running
9 >> in case it matters) and it seems OK. It oscillates constantly between
10 >> 0.0KB/s and 80.0KB/s. As soon as I start browsing via the proxy
11 >> server, the upload frequently goes to "stalled" but I suppose that
12 >> could be a bandwidth issue. Browsing still stalls before very long.
13 >
14 > The oscillation is related to buffering and is normal. If you are getting
15 > longer stalling periods where no packets are being transmitted then there
16 > could be a network problem. iptraf-ng, ntop and other tools can show if
17 > packets have stopped moving in either direction.
18 >
19 > From what you're describing the problem seems related to the squid
20 > application, since scp is not seeing similar timeouts.
21
22 Strangely, the ziproxy application behaves in exactly the same way.
23
24 - Grant