On Mon, 20 Oct 2003, dotaku wrote:Thanks...but can I flush a postgreql server unused memory after stopping it. The problem that i had is that, even after stopping all postgresql services...the used memory is still more than 80% of the total RAM..
Hi all..
i've got a problem with the memory that postgresql 7.3.2 used in RedHat 9.
When the memory usage reached 80% or more of the total memory in the system..
the memory just keep stuck there..The thing did not reduce bt itself...
Then i decided to stop the postgresql service. But ...the memory that postgresql used still stuck...I used top to check the memory...
The only way to solved it now...is via rebooting the machine..But that is ridiculous..
Need Help....maybe i miss configured the postgresql.conf.
But give me something to tinker with..
Are you talking about something like this:
Mem: 1543980K av, 1538248K used, 5732K free, 266768K shrd, 36064K buff Swap: 2048208K av, 194532K used, 1853676K free 802612K cached
Where I'm only showing 5732k free, but 802612k cached? That's normal. The linux kernel is just using the spare memory for file caching until something tries to allocate a big chunk of memory, then it will give it back. That's normal operation.
Or is it something else?
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any idea how to flush it. I've read somewhere about kflushd and bdflushd. How to used it...Both are kernel related. Is there any user space program that can kick it.
--azman---
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