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Does Buildbot retain a constant TCP socket to its server? I'm seeing this: http://buildbot.python.org/all/builders/AMD64%20Debian%20root%203.3/builds/0 """ Results: Retry exception slave lost """ I have two internet connections; one is faster, but tends to drop socket connections after a few hours, and the other is a bit slower but more reliable (as long as the connection doesn't go idle for too long - neither of my upstreams is particularly MUD-friendly). Would it help to set a routing rule to send traffic to python.org:9020 via the connection that won't drop out? ChrisA
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On Tue, 31 Dec 2013 11:24:26 +1100 Chris Angelico <rosuav@gmail.com> wrote:
Does Buildbot retain a constant TCP socket to its server? I'm seeing this:
http://buildbot.python.org/all/builders/AMD64%20Debian%20root%203.3/builds/0
I'm quite sure it does. It's necessary to get a real-time view of the test log.
The only way to know is to try it out :) Regards Antoine.
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On Tue, Dec 31, 2013 at 11:42 AM, Antoine Pitrou <solipsis@pitrou.net> wrote:
If that's what it does, then it almost certainly will help. I put all my MUD connections through the other connection. The change is made, I'll trigger another build and see if it works. Thanks for the help! ChrisA
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Am 31.12.13 01:24, schrieb Chris Angelico:
Does Buildbot retain a constant TCP socket to its server?
In short: yes. A little bit longer: It uses the Twisted PerspectiveBroker protocol. That has nearly-transparent reconnects (but as your case shows, not fully transparent), and does regular ping messages to keep the connection alive. So it should be able to handle a failover from one link to the other, but it's certainly better to bind it to the more reliable transport. I believe you can somehow configure the frequency of ping messages so that you network doesn't believe the connection goes idle, plus it will attempt a reconnect if the network did indeed cancel the connection. If you wanted to study this further, you could look into the slave's twisted log file. Regards, Martin
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On Thu, Jan 2, 2014 at 9:17 AM, "Martin v. Löwis" <martin@v.loewis.de> wrote:
I should have mentioned that I'd already peeked into the log and that's why I posted. There was something in there about it sending application-level keepalives (every 600 seconds, IIRC), which looked good; but it wasn't sufficient, as seen. After I switched it to the other connection, I didn't see any more problems (and it's completed a few builds, though 2.7 seems to be having trouble in the tests - not peculiar to this bot though). ChrisA
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On Tue, 31 Dec 2013 11:24:26 +1100 Chris Angelico <rosuav@gmail.com> wrote:
Does Buildbot retain a constant TCP socket to its server? I'm seeing this:
http://buildbot.python.org/all/builders/AMD64%20Debian%20root%203.3/builds/0
I'm quite sure it does. It's necessary to get a real-time view of the test log.
The only way to know is to try it out :) Regards Antoine.
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On Tue, Dec 31, 2013 at 11:42 AM, Antoine Pitrou <solipsis@pitrou.net> wrote:
If that's what it does, then it almost certainly will help. I put all my MUD connections through the other connection. The change is made, I'll trigger another build and see if it works. Thanks for the help! ChrisA
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Am 31.12.13 01:24, schrieb Chris Angelico:
Does Buildbot retain a constant TCP socket to its server?
In short: yes. A little bit longer: It uses the Twisted PerspectiveBroker protocol. That has nearly-transparent reconnects (but as your case shows, not fully transparent), and does regular ping messages to keep the connection alive. So it should be able to handle a failover from one link to the other, but it's certainly better to bind it to the more reliable transport. I believe you can somehow configure the frequency of ping messages so that you network doesn't believe the connection goes idle, plus it will attempt a reconnect if the network did indeed cancel the connection. If you wanted to study this further, you could look into the slave's twisted log file. Regards, Martin
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On Thu, Jan 2, 2014 at 9:17 AM, "Martin v. Löwis" <martin@v.loewis.de> wrote:
I should have mentioned that I'd already peeked into the log and that's why I posted. There was something in there about it sending application-level keepalives (every 600 seconds, IIRC), which looked good; but it wasn't sufficient, as seen. After I switched it to the other connection, I didn't see any more problems (and it's completed a few builds, though 2.7 seems to be having trouble in the tests - not peculiar to this bot though). ChrisA
participants (3)
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"Martin v. Löwis"
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Antoine Pitrou
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Chris Angelico