| From: | Andrey Borodin <x4mmm(at)yandex-team(dot)ru> |
|---|---|
| To: | Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com> |
| Cc: | Gasper Zejn <zejn(at)owca(dot)info>, pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: pglz performance |
| Date: | 2019-10-25 05:05:13 |
| Message-ID: | 1C96A33A-6064-41E8-8231-3EC9441F35EC@yandex-team.ru |
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| Lists: | pgsql-hackers |
> 21 окт. 2019 г., в 14:09, Andrey Borodin <x4mmm(at)yandex-team(dot)ru> написал(а):
>
> With Silesian corpus pglz_decompress_hacked is actually decreasing performance on high-entropy data.
> Meanwhile pglz_decompress_hacked8 is still faster than usual pglz_decompress.
> In spite of this benchmarks, I think that pglz_decompress_hacked8 is safer option.
Here's v3 which takes into account recent benchmarks with Silesian Corpus and have better comments.
Thanks!
--
Andrey Borodin
Open source RDBMS development team leader
Yandex.Cloud
| Attachment | Content-Type | Size |
|---|---|---|
| v3-0001-Use-memcpy-in-pglz-decompression.patch | application/octet-stream | 3.4 KB |
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