Hi!
Among our IBM servers I have two 5500 M20 servers, both with ServeRaid 3H controllers, dual CPU.
I recently discovered that both servers are using about 40% of its CPU power to handle hardware interrupts. Checking my other servers none of them seems to ever use more than one 1%. Also a perfom check showed me that the two servers in question have about 65000 Interrupts/sec (from perfmon processor count) - other servers have about 100-400.
I've tried calling IBM, but their only suggestion was to strip down the server and insert the hardware one-by-one and see if I could find the troubling part, but as this is a working production server that is not my first option.
Anyone with any suggestion on this issue?`
</Morten>
Among our IBM servers I have two 5500 M20 servers, both with ServeRaid 3H controllers, dual CPU.
I recently discovered that both servers are using about 40% of its CPU power to handle hardware interrupts. Checking my other servers none of them seems to ever use more than one 1%. Also a perfom check showed me that the two servers in question have about 65000 Interrupts/sec (from perfmon processor count) - other servers have about 100-400.
I've tried calling IBM, but their only suggestion was to strip down the server and insert the hardware one-by-one and see if I could find the troubling part, but as this is a working production server that is not my first option.
Anyone with any suggestion on this issue?`
</Morten>