Re: [PERFORM] Mostly read performance (2 replies)

2005-08-12 Thread Jeffrey Tenny
(Pardon my replying two two replies at once, I only get the digest and this was easier). Michael Stone wrote: [...] Well, that's what you'd expect. But a first time 70MB fetch on a freshly rebooted system took just as long as all secondary times. (Took over a minute to fetch, which is too l

Re: [SPAM?] Re: [PERFORM] PG8 Tuning

2005-08-12 Thread Jeff Trout
On Aug 11, 2005, at 12:58 PM, Jeffrey W. Baker wrote: Like Mr. Stone said earlier, this is pure dogma. In my experience, xlogs on the same volume with data is much faster if both are on battery-backed write-back RAID controller memory. Moving from this situation to xlogs on a single normal di

Re: [PERFORM] Mostly read performance

2005-08-12 Thread Greg Stark
Michael Stone <[EMAIL PROTECTED]> writes: > > Well, that's what you'd expect. But a first time 70MB fetch on a freshly > > rebooted system took just as long as all secondary times. (Took over a > > minute to fetch, which is too long for my needs, at least on secondary > > attempts). That's not