> > How can I improve performance and will version 7.4 bring something > > valuable for my task? Rewrite to some other scripting language is not > > a problem. Trigger is simple enough. > > Well, try it without the trigger. If performance improves markedly, it might > be worth rewriting in C.
Nope. Execution time is practically the same without trigger. > If not, you're probably saturating the disk I/O - using iostat/vmstat will let > you see what's happening. If it is your disks, you might see if moving the > WAL onto a separate drive would help, or check the archives for plenty of > discussion about raid setups. Bottleneck in this case is CPU. postmaster process uses almost 100% of CPU. > > Postgres v7.3.4, shared_buffers=4096 max_fsm settings also bumped up > > 10 times. > Well effective_cache_size is useful for reads, but won't help with writing. > You might want to look at wal_buffers and see if increasing that helps, but I > couldn't say for sure. Disk I/O should not be a problem in this case. vmstat shows ~300kb/s write activity. Mindaugas ---------------------------(end of broadcast)--------------------------- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly