> 2011/10/7 Paul T. Keener <[log in to unmask]>:
>> I see load averages of 140 to 200 or more and I see a high percent of CPU
>> time in wait states (70-80%) with a large number of interrupts (10-15K),
>> both of these reported by dstat.
> Hi Paul,
> if a significant fraction of the CPU is used by ksoftirqd it's
> usually an indication that the kernel has troubles managing the
> interrupts coming from the NIC (too much data coming from or going to
> the wire). If possible, try to put the network driver for your device
> in polling mode (the kernel then devotes one core to handling the
> stuff coming from NIC and disables the NIC's interrupts), you should
> see an improvement.
I will look at this, but if it really is a network problem, wouldn't I
see it regardless of which xrootd namespace I was talking to?