i've experience the same, a build about ~75 and another around ~95
introduced from the limited versions I've tested introduced some
dramatic performance and memory improvements

i think one was around streams and the other around lambdas

but that is also about u40 was April 14, 2015, and u121 was April 18,
2017, so you have 2 years of people using java 8 with real life
applications and feeding back those changes

John


On 10 October 2017 at 00:03, Ole Ersoy <ole.er...@gmail.com> wrote:
> Are you using streams?  A while back I experimented with matrix
> multiplication using streams and they can be very slow:
>
> https://stackoverflow.com/questions/35037893/java-8-stream-matrix-multiplication-10x-slower-than-for-loop
>
> So I would think that Java has a lot of performance tuning and optimization
> it could do in this space.
>
> Cheers,
>
> Ole
>
>
>
> On 10/09/2017 04:20 PM, Rob Tompkins wrote:
>>
>> Hey all,
>>
>> At my day job we saw a 60% performance improvement (cpu utilization)
>> between 1.8.0_40 and 1.8.0_121, and I was wondering if anyone else out there
>> has seen anything like that before or if anyone might know what could cause
>> that given that the release notes  don’t directly point to anything.
>>
>> Cheers,
>> -Rob
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