RE: Large increase in context switch rate

[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@xxxxxxxx] 
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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/