Horton

Re: Compress ReorderBuffer spill files using LZ4

Tomas Vondra <tomas.vondra@enterprisedb.com>

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From: Tomas Vondra <tomas.vondra@enterprisedb.com>
To: Julien Tachoires <julmon@gmail.com>, pgsql-hackers@lists.postgresql.org
Date: 2024-06-07T12:59:43Z
Lists: pgsql-hackers 
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?


regards

-- 
Tomas Vondra
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

Commits

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