Re: Partitioned checkpointing - Mailing list pgsql-hackers

From Fabien COELHO
Subject Re: Partitioned checkpointing
Date
Msg-id alpine.DEB.2.10.1509101229350.30046@sto
Whole thread Raw
In response to Partitioned checkpointing  (Takashi Horikawa <t-horikawa@aj.jp.nec.com>)
Responses Re: Partitioned checkpointing
List pgsql-hackers

> I don't feel that another source of the performance dip has been heartily
> addressed; full-page-write rush, which I call here, would be a major issue.
> That is, the average size of transaction log (XLOG) records jumps up sharply
> immediately after the beginning of each checkpoint, resulting in the
> saturation of WAL write path including disk(s) for $PGDATA/pg_xlog and WAL
> buffers.

On this point, you may have a look at this item:
    https://commitfest.postgresql.org/5/283/

-- 
Fabien.



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