It means you have a piece of hardware that is generating a lot of interupts. Try a few commands like this:<br>
<br>
# vmstat 1<br>
# watch -n1 cat /proc/interrupts <br>
Go through lspci -vb and disable hardware that's not being used. <br>
<br>
Watch the numbers as they increase. Also check for ERR and MIS<br>
<br><br><div><span class="gmail_quote">On 9/19/05, <b class="gmail_sendername">Rich Adamson</b> <<a href="mailto:radamson@routers.com">radamson@routers.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br>> OK. Perhaps I was not clear. Please read my original post again:<br>><br>> >>>> I've been trying to diagnose why my server has a constant idle time of 90%<br>> >>>> even when nothing is running.
<br>><br>> I did not say "90% usage" I said "90% idle". Meaning I have a constant CPU<br>> usage of 10%.<br>><br>> This 10% measurement comes from the "hardware interrupt" (hi) from within
<br>> "top":<br>><br>>
Cpu(s): 3.8% us, 2.1% sy, 0.0% ni,
85.5% id, 0.2% wa, 8.0% hi, 0.4% si<br>><br>><br>> Even when all other percentages are at 0%, hi remains around 10%. How can I<br>> figure out what is causing all these interrupts?<br><br>I don't have a clue other then to unload drivers, etc.
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