kernel: calcru: runtime went backwards

[Frank Bonnet]

Hello All

since few days I get those messages into console and /var/log/messages

The machine is a IBM X3650 dual CPU , I've read it could be multi-cpu
related but I am a bit confused in it.

Does any guru could show me the light on how to stop those messages
if possible , this has side effects on Dovecot IMAP server that kill
himself when it trap that kind of error messages.


Thank you


Jun  8 10:16:34 mail kernel: calcru: runtime went backwards from 1721
usec to 1377 usec for pid 684 (rpc.lockd)
Jun  8 10:16:34 mail kernel: calcru: runtime went backwards from 528
usec to 459 usec for pid 678 (rpc.statd)
Jun  8 10:16:34 mail kernel: calcru: runtime went backwards from 1928
usec to 1906 usec for pid 643 (ypbind)
Jun  8 10:16:34 mail kernel: calcru: runtime went backwards from 2241
usec to 1793 usec for pid 643 (ypbind)
Jun  8 10:16:34 mail kernel: calcru: runtime went backwards from 9373
usec to 7545 usec for pid 628 (rpcbind)
Jun  8 10:16:34 mail kernel: calcru: runtime went backwards from 556
usec to 539 usec for pid 538 (devd)
Jun  8 10:16:34 mail kernel: calcru: runtime went backwards from 12152
usec to 9722 usec for pid 538 (devd)
Jun  8 10:16:34 mail kernel: calcru: runtime went backwards from 287
usec to 229 usec for pid 143 (adjkerntz)
Jun  8 10:16:34 mail kernel: calcru: runtime went backwards from 18 usec
to 14 usec for pid 42 (sctp_iterator)
Jun  8 10:16:34 mail kernel: calcru: runtime went backwards from 711
usec to 569 usec for pid 39 (irq15: ata1)
Jun  8 10:16:34 mail kernel: calcru: runtime went backwards from 44 usec
to 40 usec for pid 36 (usb3)
Jun  8 10:16:34 mail kernel: calcru: runtime went backwards from 35 usec
to 31 usec for pid 35 (usb2)
Jun  8 10:16:34 mail kernel: calcru: runtime went backwards from 1325
usec to 1060 usec for pid 23 (swi6: task queue)
Jun  8 10:16:34 mail kernel: calcru: runtime went backwards from 21246
usec to 20041 usec for pid 2 (g_event)
Jun  8 10:16:34 mail kernel: calcru: runtime went backwards from 8572
usec to 7530 usec for pid 0 (swapper)