JDK 9 RFR of 6375303: Review use of caching in BigDecimal (original) (raw)

Peter Levart peter.levart at gmail.com
Wed Mar 12 08:54:36 UTC 2014

On 03/11/2014 06:10 PM, Brian Burkhalter wrote:

Sergey,

On Mar 11, 2014, at 1:18 AM, Sergey Kuksenko wrote:

Could you share your benchmarks? Of course. Please see: benchmark source: http://cr.openjdk.java.net/~bpb/6375303/Bench6375303.java benchmark results: http://cr.openjdk.java.net/~bpb/6375303/6375303-bench.html Let us know should you find anything amiss.

Do you have access to an ARM system (like Raspberry Pi ?) On Intel, volatile read is practically free - especially in micro benchmarks, when compared to normal read. The normal read can't be hoisted out of loops (the microbenchmark harness tries hard to prevent that)...

I can try this on my Raspberry Pi when I get home. ;-)

It would also be helpful if the JIT-ed assembly for the toString method could be dumped in various scenarios.

Regards, Peter

Thanks, Brian

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