Messages in this thread | | | Subject | RE: Large increase in context switch rate | Date | Thu, 17 Jul 2008 16:14:00 +0100 | From | "Alex Nixon (Intern)" <> |
| |
Yeah I've checked - the number of context switches seems to be around 60k regardless of whether CONFIG_PARAVIRT is switched on, and regardless of whether it's running in domu or native (-j4 on dual core)
-----Original Message----- From: Jeremy Fitzhardinge [mailto:jeremy@goop.org] Sent: 17 July 2008 16:03 To: Peter Zijlstra Cc: Ingo Molnar; Linux Kernel Mailing List; Alex Nixon (Intern); Ian Campbell Subject: Re: Large increase in context switch rate
Peter Zijlstra wrote: > Is this specific to Xen?, as a native kernel doesn't do more than ~3k > cs/s with make -j3 on my dual core. >
No, it doesn't seem to be. A CONFIG_PARAVIRT kernel running on bare hardware shows the same context switch rate. Merely turning CONFIG_PARAVIRT on should have no effect on context switch rate (though,
Alex, it would be worth double-checking, just to be sure).
J
| |