Vivek Khera <> writes:
> One of the suggestions handed to me a long time ago for speeding up PG
> on FreeBSD was to double the default blocksize in PG. I tried it, but
> found not a significant enough speed up to make it worth the trouble
> to remember to patch every version of Pg during the upgrade path (ie,
> 7.4.0 -> 7.4.2 etc.) Forgetting to do that would be disastrous!
Not really --- the postmaster will refuse to start if the BLCKSZ shown
in pg_control doesn't match what is compiled in. I concur though that
there may be no significant performance gain. For some workloads there
may well be a performance loss from increasing BLCKSZ.
regards, tom lane