firebird-automations
commented
5 years ago Commented by: Sean Leyne (seanleyne)
99.9% of access to Security database is reads, so a change to "Forced Writes" setting would have very, very little impact.
Open firebird-automations opened 5 years ago
firebird-automations
commented
5 years ago Commented by: Sean Leyne (seanleyne)
99.9% of access to Security database is reads, so a change to "Forced Writes" setting would have very, very little impact.
firebird-automations
commented
5 years ago Commented by: @dyemanov
Sean, every "read" (auth check) is performed in a separate transaction and thus modifies at least two pages - header and TIP. However, this shouldn't be an issue starting with 3.0.2, see CORE5434 (SuperServer only though). So I suppose this topic is either about v2.5 or about Classic. More details are required from the author.
firebird-automations
commented
5 years ago Commented by: Basil A. Sidorov (basid)
I'm implement "edge case" - get server version via services from multi-threaded (java) application. Unexpected result: with "write async" time of test is increased by 10 percent. I'm take "some time-out".
firebird-automations
commented
5 years ago Commented by: Basil A. Sidorov (basid)
"Wrong result - is result also".
security.db = $(dir_secDb)/security3.fdb { RemoteAccess = false DefaultDbCachePages = 50 }
If increase DefaultDbCachePages up to security#.fdb size (500 pages or more) disk IO is minimal (3.0SuperServer).
Please clouse ticket or change default for firebird.conf.
Submitted by: Basil A. Sidorov (basid)
Make write asinc for security#.fdb as default option. Motivation: lowered IO-load for environment with many short-lived connections.
Workaround: change attribute manualy via two restart Firebird server.