Re: [DRLVM][GC] (HARMONY-2398) patch for GCv5 alloc helper inlining

[Geir Magnusson Jr.]

Nice - any thoughts on where to focus for improved performance?

geir


Rana Dasgupta wrote:

Since the allocation helper is inlined now, I reran the old allocation rate

test( with the default heapsize 256 M ) ...while gc_gen and gc_cc are in the

same ballpark, there is still some way to go to catch up with RI. Log
attached.




On 12/5/06, Mikhail Fursov <[EMAIL PROTECTED]> wrote:

If you compare performance of allocation - allocation fast path helper
code
is all you need.
And we need to check performance not with microtests, but use real
benchmarks. Microtests can hide cache misses in our example.

On 12/5/06, Ivan Volosyuk <[EMAIL PROTECTED]> wrote:
>
> Helper code is equal. GC code is not. Lets compare apples with oranges.
> --
> Ivan
>
> On 12/5/06, Mikhail Fursov <[EMAIL PROTECTED]> wrote:
> > The helpers code is equal, except this load. So if we have different
> > performance -> this extra memory access is the cause.
> >
> > On 12/5/06, Ivan Volosyuk <[EMAIL PROTECTED]> wrote:
> > >
> > > I think in order to do this comparison, other conditions should be
> > > equal. Comparing helper with 1 dependent load in gc_cc and helper
with
> > > 2 dependent loads in gc_v5 makes no sense to me.
>



--
Mikhail Fursov

------------------------------------------------------------------------

gcgen default heapsize 256M
=============================
Timing 50 million total object allocations
Varying number of threads and number of objects retained

Timing 1 threads, retaining 64 Objects: 3.625 seconds 210.20689655172413 MB/sec Timing 1 threads, retaining 128 Objects: 3.593 seconds 212.0790425827999 MB/sec Timing 1 threads, retaining 256 Objects: 3.579 seconds 212.90863369656327 MB/sec Timing 1 threads, retaining 512 Objects: 3.578 seconds 212.96813862493013 MB/sec Timing 1 threads, retaining 1024 Objects: 3.578 seconds 212.96813862493013 MB/sec Timing 1 threads, retaining 2048 Objects: 3.578 seconds 212.96813862493013 MB/sec Timing 1 threads, retaining 4096 Objects: 3.688 seconds 206.61605206073753 MB/sec Timing 1 threads, retaining 8192 Objects: 3.687 seconds 206.67209113100083 MB/sec Timing 2 threads, retaining 64 Objects: 5.344 seconds 142.58982035928142 MB/sec Timing 2 threads, retaining 128 Objects: 5.484 seconds 138.94967177242887 MB/sec Timing 2 threads, retaining 256 Objects: 5.485 seconds 138.92433910665451 MB/sec Timing 2 threads, retaining 512 Objects: 5.14 seconds 148.24902723735408 MB/sec Timing 2 threads, retaining 1024 Objects: 5.204 seconds 146.42582628747118 MB/sec Timing 2 threads, retaining 2048 Objects: 5.312 seconds 143.4487951807229 MB/sec Timing 2 threads, retaining 4096 Objects: 5.219 seconds 146.00498179727916 MB/sec Timing 2 threads, retaining 8192 Objects: 5.219 seconds 146.00498179727916 MB/sec Timing 4 threads, retaining 64 Objects: 6.265 seconds 121.62809257781325 MB/sec Timing 4 threads, retaining 128 Objects: 5.672 seconds 134.3441466854725 MB/sec Timing 4 threads, retaining 256 Objects: 5.531 seconds 137.76893870909421 MB/sec Timing 4 threads, retaining 512 Objects: 5.454 seconds 139.71397139713972 MB/sec Timing 4 threads, retaining 1024 Objects: 5.422 seconds 140.53854666174843 MB/sec Timing 4 threads, retaining 2048 Objects: 5.593 seconds 136.24173073484712 MB/sec Timing 4 threads, retaining 4096 Objects: 5.109 seconds 149.14856136230182 MB/sec Timing 4 threads, retaining 8192 Objects: 5.391 seconds 141.34668892598776 MB/sec Timing 8 threads, retaining 64 Objects: 5.594 seconds 136.21737575974257 MB/sec Timing 8 threads, retaining 128 Objects: 5.5 seconds 138.54545454545453 MB/sec Timing 8 threads, retaining 256 Objects: 5.516 seconds 138.14358230601886 MB/sec Timing 8 threads, retaining 512 Objects: 5.515 seconds 138.16863100634635 MB/sec Timing 8 threads, retaining 1024 Objects: 5.5 seconds 138.54545454545453 MB/sec Timing 8 threads, retaining 2048 Objects: 5.438 seconds 140.1250459727841 MB/sec Timing 8 threads, retaining 4096 Objects: 5.547 seconds 137.3715521903732 MB/sec Timing 8 threads, retaining 8192 Objects: 5.89 seconds 129.37181663837012 MB/sec Timing 16 threads, retaining 64 Objects: 5.828 seconds 130.7481125600549 MB/sec Timing 16 threads, retaining 128 Objects: 5.86 seconds 130.03412969283275 MB/sec Timing 16 threads, retaining 256 Objects: 5.859 seconds 130.0563236047107 MB/sec Timing 16 threads, retaining 512 Objects: 5.828 seconds 130.7481125600549 MB/sec Timing 16 threads, retaining 1024 Objects: 5.641 seconds 135.0824321928736 MB/sec Timing 16 threads, retaining 2048 Objects: 5.781 seconds 131.81110534509602 MB/sec Timing 16 threads, retaining 4096 Objects: 5.719 seconds 133.24007693652734 MB/sec Timing 16 threads, retaining 8192 Objects: 5.672 seconds 134.3441466854725 MB/sec Timing 32 threads, retaining 64 Objects: 5.688 seconds 133.9662447257384 MB/sec Timing 32 threads, retaining 128 Objects: 5.656 seconds 134.72418670438472 MB/sec Timing 32 threads, retaining 256 Objects: 5.656 seconds 134.72418670438472 MB/sec Timing 32 threads, retaining 512 Objects: 5.516 seconds 138.14358230601886 MB/sec Timing 32 threads, retaining 1024 Objects: 6.062 seconds 125.70108874958758 MB/sec Timing 32 threads, retaining 2048 Objects: 6.25 seconds 121.92 MB/sec Timing 32 threads, retaining 4096 Objects: 5.672 seconds 134.3441466854725 MB/sec Timing 32 threads, retaining 8192 Objects: 5.859 seconds 130.0563236047107 MB/sec

Total: 252.845 seconds

gc4.1 default heapsize 256 M
===============================
Timing 50 million total object allocations
Varying number of threads and number of objects retained

Timing 1 threads, retaining 64 Objects: 3.516 seconds 216.7235494880546 MB/sec Timing 1 threads, retaining 128 Objects: 3.484 seconds 218.71412169919634 MB/sec Timing 1 threads, retaining 256 Objects: 3.485 seconds 218.65136298421808 MB/sec Timing 1 threads, retaining 512 Objects: 3.484 seconds 218.71412169919634 MB/sec Timing 1 threads, retaining 1024 Objects: 3.5 seconds 217.71428571428572 MB/sec Timing 1 threads, retaining 2048 Objects: 3.531 seconds 215.80288870008496 MB/sec Timing 1 threads, retaining 4096 Objects: 3.516 seconds 216.7235494880546 MB/sec Timing 1 threads, retaining 8192 Objects: 3.594 seconds 212.02003338898163 MB/sec Timing 2 threads, retaining 64 Objects: 5.547 seconds 137.3715521903732 MB/sec Timing 2 threads, retaining 128 Objects: 5.406 seconds 140.9544950055494 MB/sec Timing 2 threads, retaining 256 Objects: 5.297 seconds 143.85501227109685 MB/sec Timing 2 threads, retaining 512 Objects: 5.687 seconds 133.98980130121328 MB/sec Timing 2 threads, retaining 1024 Objects: 5.282 seconds 144.2635365391897 MB/sec Timing 2 threads, retaining 2048 Objects: 5.593 seconds 136.24173073484712 MB/sec Timing 2 threads, retaining 4096 Objects: 5.032 seconds 151.4308426073132 MB/sec Timing 2 threads, retaining 8192 Objects: 5.765 seconds 132.17692974848222 MB/sec Timing 4 threads, retaining 64 Objects: 5.703 seconds 133.61388742766965 MB/sec Timing 4 threads, retaining 128 Objects: 5.375 seconds 141.7674418604651 MB/sec Timing 4 threads, retaining 256 Objects: 5.422 seconds 140.53854666174843 MB/sec Timing 4 threads, retaining 512 Objects: 5.532 seconds 137.74403470715836 MB/sec Timing 4 threads, retaining 1024 Objects: 5.375 seconds 141.7674418604651 MB/sec Timing 4 threads, retaining 2048 Objects: 5.359 seconds 142.19070722149655 MB/sec Timing 4 threads, retaining 4096 Objects: 5.531 seconds 137.76893870909421 MB/sec Timing 4 threads, retaining 8192 Objects: 5.422 seconds 140.53854666174843 MB/sec Timing 8 threads, retaining 64 Objects: 5.985 seconds 127.31829573934836 MB/sec Timing 8 threads, retaining 128 Objects: 6.406 seconds 118.95098345301281 MB/sec Timing 8 threads, retaining 256 Objects: 5.828 seconds 130.7481125600549 MB/sec Timing 8 threads, retaining 512 Objects: 5.61 seconds 135.82887700534758 MB/sec Timing 8 threads, retaining 1024 Objects: 5.593 seconds 136.24173073484712 MB/sec Timing 8 threads, retaining 2048 Objects: 5.625 seconds 135.46666666666667 MB/sec Timing 8 threads, retaining 4096 Objects: 5.625 seconds 135.46666666666667 MB/sec Timing 8 threads, retaining 8192 Objects: 5.625 seconds 135.46666666666667 MB/sec Timing 16 threads, retaining 64 Objects: 5.954 seconds 127.9811891165603 MB/sec Timing 16 threads, retaining 128 Objects: 5.625 seconds 135.46666666666667 MB/sec Timing 16 threads, retaining 256 Objects: 5.437 seconds 140.15081846606583 MB/sec Timing 16 threads, retaining 512 Objects: 5.438 seconds 140.1250459727841 MB/sec Timing 16 threads, retaining 1024 Objects: 5.719 seconds 133.24007693652734 MB/sec Timing 16 threads, retaining 2048 Objects: 5.953 seconds 128.00268772047707 MB/sec Timing 16 threads, retaining 4096 Objects: 5.422 seconds 140.53854666174843 MB/sec Timing 16 threads, retaining 8192 Objects: 5.484 seconds 138.94967177242887 MB/sec Timing 32 threads, retaining 64 Objects: 5.484 seconds 138.94967177242887 MB/sec Timing 32 threads, retaining 128 Objects: 5.563 seconds 136.97645155491642 MB/sec Timing 32 threads, retaining 256 Objects: 5.469 seconds 139.33077345035656 MB/sec Timing 32 threads, retaining 512 Objects: 5.422 seconds 140.53854666174843 MB/sec Timing 32 threads, retaining 1024 Objects: 5.422 seconds 140.53854666174843 MB/sec Timing 32 threads, retaining 2048 Objects: 5.406 seconds 140.9544950055494 MB/sec Timing 32 threads, retaining 4096 Objects: 5.391 seconds 141.34668892598776 MB/sec Timing 32 threads, retaining 8192 Objects: 5.563 seconds 136.97645155491642 MB/sec

Total: 250.502 seconds


RI heapsize 256M
=====================
Timing 50 million total object allocations
Varying number of threads and number of objects retained

Timing 1 threads, retaining 64 Objects: 0.922 seconds 826.4642082429501 MB/sec Timing 1 threads, retaining 128 Objects: 0.906 seconds 841.0596026490066 MB/sec Timing 1 threads, retaining 256 Objects: 0.938 seconds 812.3667377398721 MB/sec Timing 1 threads, retaining 512 Objects: 0.953 seconds 799.5802728226653 MB/sec Timing 1 threads, retaining 1024 Objects: 1.031 seconds 739.0882638215326 MB/sec Timing 1 threads, retaining 2048 Objects: 1.172 seconds 650.1706484641638 MB/sec Timing 1 threads, retaining 4096 Objects: 1.422 seconds 535.8649789029536 MB/sec Timing 1 threads, retaining 8192 Objects: 3.0 seconds 254.0 MB/sec Timing 2 threads, retaining 64 Objects: 1.047 seconds 727.7936962750716 MB/sec Timing 2 threads, retaining 128 Objects: 1.015 seconds 750.7389162561577 MB/sec Timing 2 threads, retaining 256 Objects: 1.031 seconds 739.0882638215326 MB/sec Timing 2 threads, retaining 512 Objects: 1.079 seconds 706.2094531974051 MB/sec Timing 2 threads, retaining 1024 Objects: 1.156 seconds 659.1695501730104 MB/sec Timing 2 threads, retaining 2048 Objects: 1.265 seconds 602.3715415019764 MB/sec Timing 2 threads, retaining 4096 Objects: 1.344 seconds 566.9642857142857 MB/sec Timing 2 threads, retaining 8192 Objects: 2.797 seconds 272.43475151948513 MB/sec Timing 4 threads, retaining 64 Objects: 1.047 seconds 727.7936962750716 MB/sec Timing 4 threads, retaining 128 Objects: 1.062 seconds 717.5141242937852 MB/sec Timing 4 threads, retaining 256 Objects: 1.156 seconds 659.1695501730104 MB/sec Timing 4 threads, retaining 512 Objects: 1.125 seconds 677.3333333333334 MB/sec Timing 4 threads, retaining 1024 Objects: 1.141 seconds 667.8352322524102 MB/sec Timing 4 threads, retaining 2048 Objects: 1.281 seconds 594.8477751756441 MB/sec Timing 4 threads, retaining 4096 Objects: 1.328 seconds 573.7951807228916 MB/sec Timing 4 threads, retaining 8192 Objects: 1.563 seconds 487.5239923224568 MB/sec Timing 8 threads, retaining 64 Objects: 1.187 seconds 641.9545071609098 MB/sec Timing 8 threads, retaining 128 Objects: 1.188 seconds 641.4141414141415 MB/sec Timing 8 threads, retaining 256 Objects: 1.156 seconds 659.1695501730104 MB/sec Timing 8 threads, retaining 512 Objects: 1.156 seconds 659.1695501730104 MB/sec Timing 8 threads, retaining 1024 Objects: 1.109 seconds 687.1055004508567 MB/sec Timing 8 threads, retaining 2048 Objects: 1.313 seconds 580.3503427265804 MB/sec Timing 8 threads, retaining 4096 Objects: 1.359 seconds 560.7064017660044 MB/sec Timing 8 threads, retaining 8192 Objects: 1.407 seconds 541.5778251599147 MB/sec Timing 16 threads, retaining 64 Objects: 1.343 seconds 567.3864482501862 MB/sec Timing 16 threads, retaining 128 Objects: 1.282 seconds 594.383775351014 MB/sec Timing 16 threads, retaining 256 Objects: 1.25 seconds 609.6 MB/sec Timing 16 threads, retaining 512 Objects: 1.203 seconds 633.4164588528678 MB/sec Timing 16 threads, retaining 1024 Objects: 1.219 seconds 625.1025430680886 MB/sec Timing 16 threads, retaining 2048 Objects: 1.171 seconds 650.7258753202391 MB/sec Timing 16 threads, retaining 4096 Objects: 1.297 seconds 587.5096376252892 MB/sec Timing 16 threads, retaining 8192 Objects: 1.344 seconds 566.9642857142857 MB/sec Timing 32 threads, retaining 64 Objects: 1.438 seconds 529.90264255911 MB/sec Timing 32 threads, retaining 128 Objects: 1.609 seconds 473.586078309509 MB/sec Timing 32 threads, retaining 256 Objects: 1.469 seconds 518.720217835262 MB/sec Timing 32 threads, retaining 512 Objects: 1.437 seconds 530.2713987473903 MB/sec Timing 32 threads, retaining 1024 Objects: 1.266 seconds 601.8957345971564 MB/sec Timing 32 threads, retaining 2048 Objects: 1.282 seconds 594.383775351014 MB/sec Timing 32 threads, retaining 4096 Objects: 1.344 seconds 566.9642857142857 MB/sec Timing 32 threads, retaining 8192 Objects: 1.312 seconds 580.7926829268292 MB/sec

Total: 61.969 seconds