On Tue, Sep 20, 2016 at 2:20 AM, Tsunakawa, Takayuki <tsunakawa.ta...@jp.fujitsu.com> wrote: > There's no apparent evidence to indicate the cause, but I could guess a few > reasons. What do you think these are correct and should fix PostgreSQL? (I > think so)
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I think that we shouldn't start changing things based on guesses about what the problem is, even if they're fairly smart guesses. The thing to do would be to construct a test rig, crash the server repeatedly, and add debugging instrumentation to figure out where the time is actually going. I do think your theory about the stats collector might be worth pursuing. It seems that the stats collector only responds to SIGQUIT, ignoring SIGTERM. Making it do a clean shutdown on SIGTERM and a fast exit on SIGQUIT seems possibly worthwhile. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
