Re: Compression of full-page-writes

On Fri, Oct 11, 2013 at 12:30:41PM +0900, Fujii Masao wrote:
> > Sure. To be honest, when I received the same request from Andres,
> > I did that benchmark. But unfortunately because of machine trouble,
> > I could not report it, yet. Will do that again.
>
> Here is the benchmark result:
>
> * Result
> [tps]
> 1317.306391 (full_page_writes = on)
> 1628.407752 (compress)
>
> [the amount of WAL generated during running pgbench]
> 1319 MB (on)
> 326 MB (compress)
>
> [time required to replay WAL generated during running pgbench]
> 19s (on)
> 2013-10-11 12:05:09 JST LOG: redo starts at F/F1000028
> 2013-10-11 12:05:28 JST LOG: redo done at 10/446B7BF0
>
> 12s (on)
> 2013-10-11 12:06:22 JST LOG: redo starts at F/F1000028
> 2013-10-11 12:06:34 JST LOG: redo done at 10/446B7BF0
>
> 12s (on)
> 2013-10-11 12:07:19 JST LOG: redo starts at F/F1000028
> 2013-10-11 12:07:31 JST LOG: redo done at 10/446B7BF0
>
> 8s (compress)
> 2013-10-11 12:17:36 JST LOG: redo starts at 10/50000028
> 2013-10-11 12:17:44 JST LOG: redo done at 10/655AE478
>
> 8s (compress)
> 2013-10-11 12:18:26 JST LOG: redo starts at 10/50000028
> 2013-10-11 12:18:34 JST LOG: redo done at 10/655AE478
>
> 8s (compress)
> 2013-10-11 12:19:07 JST LOG: redo starts at 10/50000028
> 2013-10-11 12:19:15 JST LOG: redo done at 10/655AE478

Fujii, are you still working on this? I sure hope so.

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

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