"David W. Van Couvering" <[EMAIL PROTECTED]> writes: > There appear to be definite improvements here in terms of the > consistency of throughput and CPU usage. > > Are the regular massive spikes in throughput and CPU usage related to > the issues that Oystein was raising about checkpointing?
Thanks for committing, David. Yes, the spikes are related to Øystein's checkpointing issues. Every time a checkpoint is initiated both throughput and CPU usage drop. If the graphs had shown throughput per client, you would probably have seen long periods where one or a couple of clients had very low or zero throughput (I actually logged a transaction with 86 seconds response time when testing the patch, so there's some serious thrashing going on). -- Knut Anders
