On 09/07/2010 09:06 AM, Heikki Linnakangas wrote:
Setting a latch that's already set is very fast, so you want to keep it set until the last moment. See the coding in walsender for example, it goes to some lengths to avoid clearing the latch until it's very sure there's no more work for it to do. That helps to keep the overhead in backends committing transactions low. (no-one has tried to measure that yet, though)
Understood, thanks. Markus -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
