Re: pglz performance

On 16. 05. 19 19:13, Andrey Borodin wrote:
>
>> 15 мая 2019 г., в 15:06, Andrey Borodin <x4mmm(at)yandex-team(dot)ru> написал(а):
>>
>> Owners of AMD and ARM devices are welcome.

I've tested according to instructions at the test repo
https://github.com/x4m/test_pglz

Test_pglz is at a97f63b and postgres at 6ba500.

Hardware is desktop AMD Ryzen 5 2600, 32GB RAM

Decompressor score (summ of all times):

NOTICE:  Decompressor pglz_decompress_hacked result 6.988909
NOTICE:  Decompressor pglz_decompress_hacked8 result 7.562619
NOTICE:  Decompressor pglz_decompress_hacked16 result 8.316957
NOTICE:  Decompressor pglz_decompress_vanilla result 10.725826

Attached is the full test run, if needed.

Kind regards,

Gasper

> Yandex hardware RND guys gave me ARM server and Power9 server. They are looking for AMD and some new Intel boxes.
>
> Meanwhile I made some enhancements to test suit:
> 1. I've added Shakespeare payload: concatenation of works of this prominent poet.
> 2. For each payload compute "sliced time" - time to decompress payload if it was sliced by 2Kb pieces or 8Kb pieces.
> 3. For each decompressor we compute "score": (sum of time to decompress each payload, each payload sliced by 2Kb and 8Kb) * 5 times
>
> I've attached full test logs, meanwhile here's results for different platforms.
>
> Intel Server
> NOTICE: 00000: Decompressor pglz_decompress_hacked result 10.346763
> NOTICE: 00000: Decompressor pglz_decompress_hacked8 result 11.192078
> NOTICE: 00000: Decompressor pglz_decompress_hacked16 result 11.957727
> NOTICE: 00000: Decompressor pglz_decompress_vanilla result 14.262256
>
> ARM Server
> NOTICE: Decompressor pglz_decompress_hacked result 12.966668
> NOTICE: Decompressor pglz_decompress_hacked8 result 13.004935
> NOTICE: Decompressor pglz_decompress_hacked16 result 13.043015
> NOTICE: Decompressor pglz_decompress_vanilla result 18.239242
>
> Power9 Server
> NOTICE: Decompressor pglz_decompress_hacked result 10.992974
> NOTICE: Decompressor pglz_decompress_hacked8 result 11.747443
> NOTICE: Decompressor pglz_decompress_hacked16 result 11.026342
> NOTICE: Decompressor pglz_decompress_vanilla result 16.375315
>
> Intel laptop
> NOTICE: Decompressor pglz_decompress_hacked result 9.445808
> NOTICE: Decompressor pglz_decompress_hacked8 result 9.105360
> NOTICE: Decompressor pglz_decompress_hacked16 result 9.621833
> NOTICE: Decompressor pglz_decompress_vanilla result 10.661968
>
> From these results pglz_decompress_hacked looks best.
>
> Best regards, Andrey Borodin.
>