Greg Smith wrote: > Bruce Momjian wrote: > > Is there a value to this test_fsync test? > > > > Compare open_sync with different sizes: > > (This is designed to compare the cost of one large > > sync'ed write and two smaller sync'ed writes.) > > open_sync 16k write 242.563 ops/sec > > 2 open_sync 8k writes 752.752 ops/sec > > > > It compares the cost of doing larger vs. two smaller open_sync writes. > > > > Might be some value for determining things like what the optimal WAL > block size to use is. All these tests are kind of hard to use > effectively still, I'm not sure if it's time to start trimming tests yet > until we've made more progress on interpreting results first.
OK, thanks for the feedback. I just wanted to make sure it wasn't a stupid test. -- Bruce Momjian <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + It's impossible for everything to be true. + -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
