#archlinux32 | Logs for 2018-08-24

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[03:08:21] <buildmaster> Hi phrik!
[03:08:21] <buildmaster> Hi tyzoid!
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[07:48:56] * buildmaster resumes sanity.
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[07:50:37] <buildmaster> Hi abaumann!
[07:50:51] <abaumann> hi buildmaster, stay alive.. please..
[08:02:13] <abaumann> 100% CPU usage on mysqld, always, after a package is finished.
[08:02:24] <abaumann> something is way inefficient here..
[08:03:04] <abaumann> ..maybe a runnaway query due to some consistency problems..
[08:12:57] <abaumann> There is on delete in binary_packages_in_repositories taking forever.
[08:13:33] <abaumann> so either it wipes now all packages from the database or it just has to do some cleanup..
[08:16:40] <abaumann> aha. next query.. an update build_slaves..
[08:18:02] <abaumann> a stale package-database.lock?
[08:19:10] <abaumann> touching lockfiles and removing them is nicer than flocking them.. then at least you now, what's going on.
[08:25:34] <buildmaster> virtualbox-modules-arch is broken (says buildknecht2).
[08:27:01] <abaumann> huh? https://packages.archlinux32.org seems to be out-of-date..
[08:28:03] <abaumann> aha. now.
[08:28:15] <abaumann> so we are actually building again. :-)
[08:35:40] <abaumann> why are all cronjobs for user slave commented out?
[08:36:36] <abaumann> ah. they were moved somewhere else. :-)
[08:46:08] <buildmaster> limesuite is broken (says rechenknecht).
[08:57:06] <abaumann> wow. seed-build-list is really slow..
[08:58:17] <abaumann> mmh. what should update the graphs on https://buildmaster.archlinux32.org somehow they are stale though the buildmaster is building packages..
[08:58:18] <buildmaster> freeciv is broken (says nlopc43).
[08:58:19] <phrik> Title:Buildmaster for Archlinux32 packages (at buildmaster.archlinux32.org)
[09:03:36] * buildmaster failed to execute a mysql query - can you have a look at "tmp.mysql-functions.query.stdin.2018-08-24T09:03:15.z8lGJ9"?.
[09:11:28] <abaumann> Build master is not sane.
[09:11:31] <abaumann> again.
[09:18:15] <abaumann> https://buildmaster.archlinux32.org
[09:18:17] <phrik> Title:result of archlinux32 build master's sanity checksanity of the buildmaster's mysql database (at buildmaster.archlinux32.org)
[09:18:30] <abaumann> so packages get constantly build, and the database and files get out of sync..
[09:19:50] <abaumann> *abaumann is 'gone shopppinge'
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[09:46:09] <girls> abaumann: rebooting the buildmaster is usually not a good idea
[09:46:19] <girls> it almost certainly crashes some just-running commands :-D
[09:46:34] <girls> also: I moved all the cronjob things to systemd timers
[09:46:40] <girls> they allow for more randomization
[09:46:49] <girls> have a look at ~/.config/systemd/user
[09:47:47] <girls> the seemingly high cpu load was mostly due to blocked i/o in the past (I got values as high as 30 IIRC, when "git gc" was running)
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[11:16:34] * buildmaster resumes sanity.
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[11:44:20] <buildmaster> Hi abaumann!
[11:44:40] <abaumann> deep42thought: thanks for fixing :-)
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[12:14:26] <girls> abaumann: np
[12:16:25] <abaumann> gdb: gdb: error while loading shared libraries: libpython3.6m.so.1.0: cannot open shared object file: No such file or directory
[12:16:40] <abaumann> I see too many issues at the moment..
[12:30:17] <abaumann> With so many circles everywhere, I really think the only sane way to build the base of Archlinux is to do a complete rebuild..
[12:30:35] <abaumann> ..multiple times, of course. :-)
[12:32:15] <girls> feel free to reschedule all necessary packages right away
[12:33:29] <abaumann> yeah. I'm doing that.
[12:33:43] <abaumann> just learned, that -p means regex *grmpf*
[12:34:15] <girls> there are help messages available
[12:34:19] <abaumann> can I rebuild with priority?
[12:34:22] <girls> which are hopefully precise
[12:34:23] <girls> no
[12:34:33] <girls> but you can assign priority afterwards
[12:34:38] <girls> prioritize-build-list
[12:34:39] <abaumann> ah. ok.
[12:34:50] <girls> this also takes a regex IIRC
[12:34:57] <abaumann> actually, the regex IS documented, I'm too lazy to read.. :-)
[12:35:20] <girls> :-)
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[14:08:07] <buildmaster> Hi abaumann!
[14:08:40] <abaumann> mmh. prioritize-build-list on gdb didn't help.
[14:20:10] <abaumann> "do it again, Sam" :-)
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[15:46:58] <abaumann> ok, the only thing I get is "come back (shortly) later - I cannot lock package database.
[15:47:12] <abaumann> I don't know, but it looks like a perpetual lock to me.
[15:48:06] <abaumann> show full processlist;
[15:48:29] <abaumann> shows no sql queries are runnig. A database should use no resources in this case. Our mysql uses always 99% CPU.
[15:50:12] <abaumann> so either it's doing a lot of very small queries, so it escapes my trial of looking at them (almost physics at work here) :-)
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[16:01:30] <abaumann> I fear this is a likelyhood problem: processes running more often have a bigger chance to acquire a lock on the package list. I always see a db-update or get-package-update having the file locked already, my return-assignment has never a chance to get trough.
[16:02:05] <abaumann> lock starvation, so the processes trying to lock a resource must be in a queue.
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