On Mon, Nov 22, 2010 at 12:34:53AM +0100, Ivan Voras wrote: > On 11/22/10 00:28, Paul B Mahol wrote: > > >Find way to reproduce it 100%. > > The way I described it can be used to reproduce the problem 100%. > Detailed instructions for a test case would be something like this: > > 0) configure a system with tmpfs for /tmp > 1) install PostgreSQL 9.0, use a ZFS file system for the database > 2) install and use pgbench to initialize a database as large as > physical memory (i.e. it will blow away all caches) > 3) run pgbench with -c of around 10 or so, let it run for 5 minutes or so > 4) stop PostgreSQL, observe reported free memory statistics etc.
I have seen the same issue, with tmpfs reporting no space. I can see it happen regularly when I have big virtualbox machines running which take most of the physical mem. Here I have seen it on an 8GB machine with al ZFS when running 3-4 VMs taking 1 or 2 GBs each,(cumulatively taking around 7). I imagine this is even easier to trigger on machine with less RAM. -- Guido Falsi <m...@madpilot.net> _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
