Greg Smith wrote: > A.M. wrote: > > Perhaps a simpler tool could run a basic fsyncs-per-second test and prompt > > the DBA to check that the numbers are within the realm of possibility. > > > > This is what the test_fsync utility that already ships with the database > should be useful for. The way Bruce changed it to report numbers in > commits/second for 9.0 makes it a lot easier to use for this purpose > than it used to be. I think there's still some additional improvements > that could be made there, but it's a tricky test to run accurately. The
test_fsync was designed to test various things like whether several open-sync writes are better than two write and an fsync, and whether you can fsync data written on a different file descriptor. It is really a catch-all test right now, not one specific for choosing sync methods. -- 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
