Re: [PATCH] x86: Run checksumming in parallel accross multiple alu's

[Ingo Molnar]

* Neil Horman <nhorman@xxxxxxxxxxxxx> wrote:

> I'm sure it worked properly on my system here, I specificially 
> checked it, but I'll gladly run it again.  You have to give me an 
> hour as I have a meeting to run to, but I'll have results shortly.

So what I tried to react to was this observation of yours:

> > > Heres my data for running the same test with taskset 
> > > restricting execution to only cpu0.  I'm not quite sure whats 
> > > going on here, but doing so resulted in a 10x slowdown of the 
> > > runtime of each iteration which I can't explain. [...]

A 10x slowdown would be consistent with not running your testcase 
but 'perf bench sched messaging' by accident, or so.

But I was really just guessing wildly here.

Thanks,

	Ingo
--
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/