Re: CPU on Exchange is always 50%

From: Mark Arnold [MVP] (mark_at_mvps.org)
Date: 10/08/04

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    Date: Fri, 08 Oct 2004 08:23:53 +0100

    On Thu, 7 Oct 2004 23:51:12 +0200, "Miha" <miha.bernik@isg.si> wrote:

    >Hi
    >
    >We have a IBM Netfinity 5000 server (dual PIII 500 Mhz CPU, 1 GB Ram),
    >installed with Win2000 SP4 and Exchange 2000 Enterprise SP3, and about 200
    >mailboxes.
    >CPU is constantly 50-60%, even when all Exchange, anti-virus and spam
    >services are stopped. With Process Explorer we found
    >out that "Interrupts" are taking up this CPU usage, even while System Idle
    >is 98-99%. We tried to restart server, after then CPU was normal, using
    >about max 10%, but after a few hours it grew back to min 50% and staying at
    >that number.
    >Does anyone have any solution? Can it be hardware?
    >
    >Regards
    >Miha
    >

    If the exchange & IIS services are stopped and the processor is still
    going back up to 50% then what services are taking it?
    Have you run performance monitor to see whose using the processor(s)?

    You will always see the System Idle Process at 99% on an idle system,
    that's normal. Nice explanation:
    http://www.osnn.net/forum/showthread.php?t=783

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    Relevant Pages

    • Re: CPU on Exchange is always 50%
      ... With Process Explorer we found ... We tried to restart server, after then CPU was normal, using ... You will always see the System Idle Process at 99% on an idle system, ...
      (microsoft.public.exchange2000.admin)
    • Re: CPU on Exchange is always 50%
      ... With Process Explorer we found ... We tried to restart server, after then CPU was normal, using ... You will always see the System Idle Process at 99% on an idle system, ...
      (microsoft.public.exchange.misc)
    • Re: CPU Usage: 100%
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      ... What are your settings for Virtual Memory (also known as Paging File or Page ... all drives" should be about 1.5 * your RAM; on my computer with 1 GB RAM, ... The CPU column should always add up to 100%. ... System Idle Process, please tell us which process is using that CPU time. ...
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