Date: Sat, 25 Apr 2015 13:31:14 +0300 (MSK) From: Dmitry Morozovsky <marck@rinet.ru> To: freebsd-stable@FreeBSD.org Subject: protecting some processes from out-of-swap killer Message-ID: <alpine.BSF.2.00.1504251316020.43520@woozle.rinet.ru>
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Hi there colleagues, I have stable/10 on a rather big machine (2*8*2 e5 Xeon, 64G RAM, SAS+SSD ZFS raid10+ZIL+L2ARC) acting as a PostgreSQL server. To use such a big resource pool that is mostly idle, I'd deployed poudriere there (using tmpfs) too. Most times this combination works like a charm: LA could be 60+ and no visual latency increase on SQL queries. However, sometimes postgres processes got killed by 'out of swap space'. I suppose the source of problem could be that VSZ size of postgres processes (8-9 G) is bigger than swap congigured (4G). Is there any way to prevent this, besides reallocating space for swap? Quick googling does not help, at least I could not find answers relevant enough. Thanks! -- Sincerely, D.Marck [DM5020, MCK-RIPE, DM3-RIPN] [ FreeBSD committer: marck@FreeBSD.org ] ------------------------------------------------------------------------ *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru *** ------------------------------------------------------------------------
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