A question about bytecodes + unsigned load performance ./. add performace
Christian.Thalinger at Sun.COM
Wed Jan 21 10:11:48 PST 2009
On Tue, 2009-01-20 at 22:12 +0100, Christian Thalinger wrote:
> On Tue, 2009-01-20 at 11:22 -0800, Tom Rodriguez wrote:
> > I think on an out of order machine that much of this simply gets
> > hidden, especially when there's a lot of load and store traffic. Try
> > measuring a loop without stores, maybe something that simply sums the
> > results.
> Good idea. I will try that tomorrow.
You were absolutely right. Simply summing up the bytes as unsigned
values is 22% faster.
I hope I can try it on a SPARC box soon.
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