I think by usage he did not mean usage but *usage* :)
As in how much the swap area i used (having 8Gb swap which is allocated
but not used wont matter much).
Where as in a system who is spending time writing/reading from/to the
swap area performance will degrade considerably.
// Michael Medin
On 2009-07-09 09:37, Tore Lønøy wrote:
This is true for some cases but we have a few servers which are using
75% swap (8GB RAM, 8GB Swap), which are blazing fast even then. So I
don´t think swap usage _alone_ is a good indicator, but it can be.
2009/7/6 Andreas Ericsson <[email protected] <mailto:[email protected]>>
Tore Lønøy wrote:
Hello naguis usergroup!
I have for some time now tried to find a way to monitor
performance
bottlenecks related to shortage of memory on Windows, with no
luck. As far
my knowlegde of memory bottlenecks concern, using NSClient++
command
CheckMem and argument physical, is far from enough. Also,
monitoring windows
performance counters, like Memory \ Pages Out/sec is no good
either since it
doesn't support average results.
There is alot of documentation on how to determine that memory
is a
bottleneck, like e.g.: http://support.microsoft.com/kb/555223
But, for what I understand, using nagios to determine this is
hard.
So how do you guys locate memory bottlenecks on windows
machines, with or
without the help of nagios?
By checking the swap usage. Basically, when a system starts swapping
performance will go downhill very, very fast. The disk is several
hundred
orders of magnitude slower than the RAM. If you have high swap
usage, you
should buy more RAM for your servers (or modify whatever programs are
running on them).
--
Andreas Ericsson [email protected]
<mailto:[email protected]>
OP5 AB www.op5.se <http://www.op5.se>
Tel: +46 8-230225 Fax: +46 8-230231
Considering the successes of the wars on alcohol, poverty, drugs and
terror, I think we should give some serious thought to declaring war
on peace.
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