nohz=off is the Way to Go
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Catégories : [ Informatique ]
Debian Lenny's default kernel is tickless, meaning that there is no periodic
tick anymore. As a result, it seems that some applications that use
periodically short sleeps (as in while(1) { // do possibly something; usleep(250); })
are scheduled far too often and the CPU is running more than in should while
the system is seemingly idle. Passing the option nohz=off to the kernel
seems to have fixed that problem.
[ Posté le 7 juillet 2009 à 18:34 | pas de commentaire | lien permanent ]
