> We have postgres running on freebsd 4.9 with 2 Gigs of memory. As per > repeated advice on the mailing lists we configured effective_cache_size > = 25520 which you get by doing `sysctl -n vfs.hibufspace` / 8192 > > Which results in using 200Megs for disk caching.
effective_cache_size does nothing of the sort. CHeck your shared_buffers value... > Is there a reason not to increase the hibufspace beyond the 200 megs and > provide a bigger cache to postgres? I looked both on the postgres and > freebsd mailing lists and couldn't find a good answer to this. Well, maybe butnot necessarily. It's better to leave the OS to look after most of your RAM. Chris ---------------------------(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