Apologies, I didn't notice that I was replying off-list. On 27 June 2011 00:29, Dave Coventry <dgcoven...@gmail.com> wrote: > On 26 June 2011 23:37, John R Pierce <pie...@hogranch.com> wrote: >> I didn't read the whole thread, but is this a Linux server? Linux has a >> horrible feature, the "Out of Memory Killer", which kills off processes when >> the system is low on memory. >> >> the OOM-Killer usually leaves log entries in DMESG and maybe >> /var/log/messages > > Yes, it's a Ubuntu 10.10 server. I don't actually see anything in > dmesg or in /var/log/messages that would indicate indiscriminate > culling of processes. > >> If in fact its the OOM killer, you should probably lower your WORK_MEM and >> SHARED_BUFFERS and maybe MAINTENANCE_WORK_MEM in postgresql.conf > > Thanks for the suggestions. I have pulled them all down to their > recommended minimums: > > work_mem: 64kB > shared_buffers: 128kB > maintenance_work_mem: 1MB > > I'll see if that makes any difference. >
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