[lustre-discuss] 2.10.0 CentOS6.9 ksoftirqd CPU load

[Hans Henrik Happe]

Hi,

Did anyone else experience CPU load from ksoftirqd after 'modprobe
lustre'? On an otherwise idle node I see:

  PID USER      PR   NI VIRT  RES  SHR S %CPU  %MEM TIME+   COMMAND
    9 root      20   0     0    0    0 S 28.5  0.0  2:05.58 ksoftirqd/1


   57 root      20   0     0    0    0 R 23.9  0.0  2:22.91 ksoftirqd/13

The sum of those two is about 50% CPU.

I have narrowed it down to the ptlrpc module. When I remove that, it stops.

I also tested the 2.10.1-RC1, which is the same.

Cheers,
Hans Henrik