RFR JDK-8059510 Compact symbol table layout inside shared archive

Jiangli Zhou jiangli.zhou at oracle.com
Mon Oct 13 16:17:34 UTC 2014


Hi David and Gerard,

On 10/13/2014 07:59 AM, Gerard Ziemski wrote:
> hi David,
>
> On 10/12/2014 8:32 PM, David Holmes wrote:
>>> ============================================================================== 
>>>
>>>
>>> logs.specjvm.before:
>>>    Benchmark           Samples        Mean     Stdev Geomean Weight
>>>    specjvm98                 8       81.33      1.47
>>> ============================================================================== 
>>>
>>>
>>> logs.specjvm.after:
>>>    Benchmark           Samples        Mean     Stdev   %Diff P
>>> Significant
>>>    specjvm98                 8       81.72      0.70    0.48
>>> 0.509            *
>>> ============================================================================== 
>>>
>>
>> Sample size is too small to give meaningful results.
>
> 8 is a too small sample size?
>
> I'm running refworkload benchmarks myself, so I'm curious - what is a 
> meaningful sample size for refworkload benchmarks?

8 is definitely not small for specjvm. In some cases, 3 is enough.

Thanks,
Jiangli

>
>
> cheers



More information about the hotspot-runtime-dev mailing list