Re: [PERFORM] why is a constraint not 'pushed down' into a subselect when this subselect is using a 'group by' ??

2004-06-16 Thread Frank van Vugt
> We don't attempt to make every possible inference (and I don't think > you'd like it if we did). I wasn't really asking you to, either ;)) Just trying to achieve a more in-depth understanding of the way things work. > This example doesn't > persuade me that it would be worth expending the cycl

[PERFORM] Visual Explain

2004-06-16 Thread Jeff
I've known about this tool for a while, but it seems many people do not know of its existence and I think it would be useful to a lot of people who have a hard time reading explain analyze output. (And even those who can read them without blinking.. when you get deep in join hell it gets tricky

[PERFORM] Basic Postgresql Performance Question

2004-06-16 Thread Bill
Hi, I currently have a mysql server running with a database of around 800 gb. The problem is that the server is old (500 MHz Pentium III with 512 MB RAM) and I want to change this to a new server and convert the existing database to Postgresql on Debian (I assume that Postgresql offers better perf

Re: [PERFORM] Basic Postgresql Performance Question

2004-06-16 Thread Stephen Frost
* Bill ([EMAIL PROTECTED]) wrote: > I currently have a mysql server running with a database of around 800 > gb. The problem is that the server is old (500 MHz Pentium III with 512 > MB RAM) and I want to change this to a new server and convert the > existing database to Postgresql on Debian (I ass

Re: [PERFORM] Basic Postgresql Performance Question

2004-06-16 Thread Kevin Barnard
Stephen Frost wrote: 1. It is possible to have some sort of load-balancing through buying many computers without replication, i.e have one server which has the databases and then other servers which has no database but just exists to balance the memory and processor load? (I have hear

Re: [PERFORM] Basic Postgresql Performance Question

2004-06-16 Thread Scott Marlowe
On Wed, 2004-06-16 at 13:15, Bill wrote: > Hi, > I currently have a mysql server running with a database of around 800 > gb. The problem is that the server is old (500 MHz Pentium III with 512 > MB RAM) and I want to change this to a new server and convert the > existing database to Postgresql on

Re: [PERFORM] Basic Postgresql Performance Question

2004-06-16 Thread Stephen Frost
* Scott Marlowe ([EMAIL PROTECTED]) wrote: > On Wed, 2004-06-16 at 13:15, Bill wrote: > > 2. It is advantageous to buy AMD 64 rather than the Pentium IV? > > Yes and no. If having more than 2 gigs of ram is important, 64 bit > architecures run faster than 32 bit, where having over 2 gigs usually

Re: [PERFORM] 50 000 000 Table entries and I have to do a keyword search HELP NEEDED

2004-06-16 Thread Josh Berkus
Borajetta, The other thing you can do is take a look at your hardware. What are you running this on? How much RAM? Are other things running on this server as well? -- -Josh Berkus Aglio Database Solutions San Francisco ---(end of broadcast)