by NetComrad » Wed, 29 Sep 1999 04:00:00
I have a problem which appeared today, all of a sudden the load on the
machine went up, and the TOP command showed something like 50-80% of
CPU usage. Any suggestions on how this might happen?
e4500/6GIG Ram/little iowait
Also, I thought this might be coming from Oracle creating 4 dedicated
servers a sec, so I got it down to a lower amount, but still getting a
high load.
THanx.
by Charles Hansi » Wed, 29 Sep 1999 04:00:00
Jim H.
Quote:> Hi folks,
> I have a problem which appeared today, all of a sudden the load on the
> machine went up, and the TOP command showed something like 50-80% of
> CPU usage. Any suggestions on how this might happen?
> e4500/6GIG Ram/little iowait
> Also, I thought this might be coming from Oracle creating 4 dedicated
> servers a sec, so I got it down to a lower amount, but still getting a
> high load.
> THanx.
by Winnie Li » Wed, 29 Sep 1999 04:00:00
Winnie Liu
DBA
Infonet Services Corporation
>I have a problem which appeared today, all of a sudden the load on the
>machine went up, and the TOP command showed something like 50-80% of
>CPU usage. Any suggestions on how this might happen?
>e4500/6GIG Ram/little iowait
>Also, I thought this might be coming from Oracle creating 4 dedicated
>servers a sec, so I got it down to a lower amount, but still getting a
>high load.
>THanx.
by Chris Hamilto » Thu, 30 Sep 1999 04:00:00
>Winnie Liu
>DBA
>Infonet Services Corporation
Docs are not great, but I have examples if you need them.
Chris
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Christopher Hamilton
Oracle DBA -- Sandbox.com
http://www.sandbox.com/
by Anil Kamat » Thu, 30 Sep 1999 04:00:00
We have a dedicated server configuration, and we have
web type apps, but we do a connection pooling at the
middleware app servers, and therefore limit the number
of dedicated server processes. This is similar to what
Oracle MTS does, but this is done at the middleware.
-anil
> >I don't think that fact that Oracle generating 4 dedictated servers a
sec
> >will eat up that much memory. But do show us the exact Oracle process
that
> >shown in the TOP command in order to troubleshoot. The Information
that you
> >gave out is way too little.
> >Winnie Liu
> >DBA
> >Infonet Services Corporation
> You can reduce CPU usage dramatically by configuring the
> Multi-Threaded Server (MTS) option. A pool of servers are pre-spawned
> and used by connections as needed. Great for web-type apps which
> create and destroy many sessions in rapid succession.
> Docs are not great, but I have examples if you need them.
> Chris
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Christopher Hamilton
> Oracle DBA -- Sandbox.com
> http://www.sandbox.com/
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Before you buy.
by Gerry Sinkiewic » Fri, 01 Oct 1999 04:00:00
We had a server doing this kind of thing yesterday.
Today they replaced one of the cpu's. The machine, an E3000, rebooted itself at
4:07 AM taking
one instance with it; recovered ok using a hot backup from yesterday.
Does anyone know what it means if the kernel keeps writing
80 80 80 80 80 80 80 80 80 ...
while the system is apprently working fine? Seems to conicide with
heavy downloading ...?
Rudolf
--
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