Messages in this thread | | | From | Andi Kleen <> | Subject | Re: [PATCH] use unlikely() for current_kernel_time() loop | Date | Thu, 8 Jun 2006 11:14:09 +0200 |
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> performance increased 2% per hyperthread;
That would surprise me. Most likely you made some measurement error.
I guess it can be a difference if it's used in very hot loops, but then i would expect a fallthrough path to win. Kernel code very rarely has hot loops like this.
-Andi
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