"Tom Lane" <[EMAIL PROTECTED]> writes: > My desktop machine has a single consumer-grade IDE drive, and even with > fsync off and synchronous_commit off, it can barely make 190 tps sustained > pgbench throughput --- it's just disk write bound all the time. On a run > with 8 clients, 10000 transactions per client, DB scale factor 25, I get > this distribution of transaction times from CVS HEAD:
Wouldn't you expect to see more of an effect on cpu-bound environments? Is there any i/o going on while these locks are being held? I suppose there's a WAL commit record that has to be synced? Have you tried with a smaller scale factor? -- Gregory Stark EnterpriseDB http://www.enterprisedb.com ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend
