Tim Chen <[email protected]> writes:
> On Wed, 2006-11-08 at 22:10 -0700, Eric W. Biederman wrote:
>
>>
>> Cool. I'm glad to know it was simply a buggy lmbench.
>>
>> What is sysconf(_SN_NPROCESSORS_ONLN) doing that it slows down as the
>> number of irqs increase? It is a slow path certainly but possibly
>> something we should fix. My hunch is cat /proc/cpuinfo...
>>
>
> The increase in time of sysconf(_SN_NPROCESSORS_ONLN) call
> is within "show_stat" function after looking at profiling data.
> There are a couple of loops that iterate over kstat_irqs
> interrupt statistics and depend on NR_IRQS. Doesn't
> look like something we need to fix.
Thanks.
Eric
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