| From: | Jeremy Harris <jgh(at)wizmail(dot)org> |
|---|---|
| To: | pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Free memory usage Sol10, 8.2.9 |
| Date: | 2009-11-03 20:42:56 |
| Message-ID: | 4AF095D0.9000705@wizmail.org |
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| Lists: | pgsql-performance |
On 11/03/2009 07:16 PM, Subbiah Stalin-XCGF84 wrote:
> All,
>
> I'm trying to understand the free memory usage and why it falls below
> 17G sometimes and what could be causing it. Any pointers would be
> appreciated.
>
> root(at)prod1 # prtconf
> System Configuration: Sun Microsystems sun4u
> Memory size: 32768 Megabytes
>
> [postgres(at)prod1 ~]$ vmstat 5 10
> kthr memory page disk faults
> cpu
> r b w swap free re mf pi po fr de sr 1m 1m 1m m1 in sy cs us
> sy id
> 0 0 0 51713480 21130304 58 185 325 104 104 0 0 23 3 7 1 488 604 573 1
> 2 97
> 0 0 0 51048768 18523456 6 10 0 192 192 0 0 4 0 3 0 527 753 807 2
> 1 97
Memory used by the OS for caching files is no longer free.
Free memory is wasted memory.
-J
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