Request for reviews (S): 7054211: No loop unrolling done in jdk7b144 for a test update() while loop
tom.rodriguez at oracle.com
Wed Sep 7 09:41:18 PDT 2011
Though it might be nice to correct the comment to say that it helps crc32 and not CaffeineMark.
On Sep 7, 2011, at 9:29 AM, Vladimir Kozlov wrote:
> 7054211: No loop unrolling done in jdk7b144 for a test update() while loop
> It is anti-delta of changes which removed code for CaffeineMark. A perf regression of approximately 13.5% was observed in benchmark with a pure java crc32 implementation which use XORs after that changes.
> Our refworkload benchmarks are not affected by this fix (and that is why did original changes).
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