On Mon, 21 May 2007, Hannes Dorbath wrote:
We have a fixed amount of 16 PG backend processes. Once created they stay
forever. OLTP load is distributed over them in a SQF fashion.
As loading a TSearch dictionary takes a few moments, we have a script that
connects to each backend on start up and pushes the dictionary into ram by
simply calling ts_debug('foo');
The dictionary has a file size of 9.8MB.
If we don't call the script `free' prints:
total used free shared buffers cached
Mem: 4048056 953192 3094864 0 4 359300
-/+ buffers/cache: 593888 3454168
After the script has called ts_debug('foo') on each backend:
total used free shared buffers cached
Mem: 4048056 2374508 1673548 0 4 370340
-/+ buffers/cache: 2004164 2043892
Is it supposed to blast so much memory?
dictionary is just a program ! Are you usin custom dictionaries ?
what does 'select * from ts_debug('foo');' prints ?
This is PG 8.2.4 on x86_64.
Regards,
Oleg
_____________________________________________________________
Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru),
Sternberg Astronomical Institute, Moscow University, Russia
Internet: [EMAIL PROTECTED], http://www.sai.msu.su/~megera/
phone: +007(495)939-16-83, +007(495)939-23-83
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