Обсуждение: pgsql: Checkpointer starts before bgwriter to avoid missing fsync reque

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pgsql: Checkpointer starts before bgwriter to avoid missing fsync reque

От
Simon Riggs
Дата:
Checkpointer starts before bgwriter to avoid missing fsync requests.
Noted while testing Hot Standby startup.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/a297d64d9223f6bd9c495ff5726a3c99080c2a4a

Modified Files
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src/backend/postmaster/postmaster.c |   12 ++++++------
1 files changed, 6 insertions(+), 6 deletions(-)


Re: pgsql: Checkpointer starts before bgwriter to avoid missing fsync reque

От
Heikki Linnakangas
Дата:
On 01.06.2012 10:28, Simon Riggs wrote:
> Checkpointer starts before bgwriter to avoid missing fsync requests.
> Noted while testing Hot Standby startup.

The processes are just forked and it will take some time for them to
initialize. Isn't there still a race condition, where the bgwriter
starts up first, and you still miss fsync requests?

--
   Heikki Linnakangas
   EnterpriseDB   http://www.enterprisedb.com