On 2015-02-13 00:27:04 -0500, Tom Lane wrote: > Two different CLOBBER_CACHE_ALWAYS critters recently reported exactly > the same failure pattern on HEAD: > > http://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=markhor&dt=2015-02-06%2011%3A59%3A59 > http://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=tick&dt=2015-02-12%2010%3A22%3A57 Those are rather strange, yea. Unfortunately both report a relatively large number of changes since the last run... > I'd say we have a problem. I'd even go so far as to say that somebody has > completely broken locking, because this looks like autovacuum and manual > vacuuming are hitting the same table at the same time. Hm. It seems likely that that would show up more widely. Oddly enough other CLOBBER_CACHE animals, like http://pgbuildfarm.org/cgi-bin/show_log.pl?nm=jaguarundi&dt=2015-02-12%2013%3A03%3A00 , that run more frequently have not reported a problem. Neither has leech which IIRC runs on the same system... One avenue to look are my changes around both buffer pinning and interrupt handling... Greetings, Andres Freund -- Andres Freund http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training & Services
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