segunda-feira, 30 de maio de 2011

[Solved] calcru: runtime went backwards

Encontrei este problema quando instalei um servidor FreeBSD 8 (pfsense) em uma máquina virtual hyper-v, esta mensagem não parava de aparecer.

calcru: runtime went backwards from 54 usec to 43 usec for pid 758 (devd)
calcru: runtime went backwards from 136 usec to 109 usec for pid 349 (dhclient)
calcru: runtime went backwards from 504 usec to 401 usec for pid 333 (dhclient)
calcru: runtime went backwards from 11672 usec to 9293 usec for pid 333 (dhclient)
calcru: runtime went backwards from 196 usec to 156 usec for pid 179 (adjkerntz)
calcru: runtime went backwards from 755 usec to 601 usec for pid 21 (swi6: task queue)
calcru: runtime went backwards from 102 usec to 81 usec for pid 9 (thread taskq)
calcru: runtime went backwards from 1621 usec to 1291 usec for pid 19 (swi5: +)
calcru: runtime went backwards from 17 usec to 14 usec for pid 17 (swi1: net)
calcru: runtime went backwards from 16892 usec to 13878 usec for pid 0 (swapper)

Isso significa que o clock(timer) do sistema esta atrasado ou voltando, confundindo um número de aplicações. Eu tive messagens como estas quando eu usei os servidores *. pool.ntp.org também;

Para resolver este problema, utilize a linha no sysctl.conf

sysctl kern.timecounter.hardware=TSC

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