Re: lmbench lat_mmap slowdown with CONFIG_PARAVIRT

[Nick Piggin]

On Tue, Jan 20, 2009 at 03:17:35PM +0100, Ingo Molnar wrote:
> 
> * Nick Piggin <npiggin@xxxxxxx> wrote:
> > 
> > BTW. the lmbench test I run directly (it's called lat_mmap.c, and gets 
> > compiled into a standalone lat_mmap exec by the standard lmbench build).
> 
> doesnt that include an indeterminate number of gettimeofday() based 
> calibration calls? That would make it harder to measure its total costs in 
> a comparative way.

Hmm... yes probably for really detailed profile comparisons or
other external measurements it would need modification.
--
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/