Horton

Re: Compress ReorderBuffer spill files using LZ4

Julien Tachoires <julmon@gmail.com>

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From: Julien Tachoires <julmon@gmail.com>
To: Tomas Vondra <tomas.vondra@enterprisedb.com>
Cc: pgsql-hackers@lists.postgresql.org
Date: 2024-06-07T13:18:23Z
Lists: pgsql-hackers 
Le ven. 7 juin 2024 à 05:59, Tomas Vondra
<tomas.vondra@enterprisedb.com> a écrit :
>
> On 6/6/24 12:58, Julien Tachoires wrote:
> > ...
> >
> > When compiled with LZ4 support (--with-lz4), this patch enables data
> > compression/decompression of these temporary files. Each transaction
> > change that must be written on disk (ReorderBufferDiskChange) is now
> > compressed and encapsulated in a new structure.
> >
>
> I'm a bit confused, but why tie this to having lz4? Why shouldn't this
> be supported even for pglz, or whatever algorithms we add in the future?

That's right, reworking this patch in that sense.

Regards,

JT

Commits

  1. Change the default value of the streaming option to 'parallel'.