anyone?
On Tue, Jul 22, 2008 at 12:27 AM, Balu manyam <balu.manyam@xxxxxxxxx> wrote:
hey gurus -- i have a HP server with 4*dual core AMD opteron processors
running 2.6.9-42 SMP kernel -- one of my DBAs complained of poor
performance while running an SQL query -- now when I check the 'mpstat -P
ALL 5 ' o/p - I see that CPU 0 is completely busy (idle 0%) most of the
time -- while the other CPUs are close to 99% idle -- I did a cat
/proc/interrupts I see that CPU0 is indeed having high values corresponding
to ethernet devices , other PCI devices , RAID controller and the timer as
well --- I also checked that we are running irqbalance daemon and please
note that we are running the kernel with noapic option -- not sure if that
matters at all
any inputs you may render are higlhly appreciated
Thanks!!