Re: [PERFORM] Optimizing disk throughput on quad Opteron

2006-10-21 Thread Ben Suffolk
You can find a diagram of my initial spec here: http://img266.imageshack.us/img266/9171/dbserverdiagramuc3.jpg Can you guys see any glaring bottlenecks in my layout? Any other suggestions to offer (throw in more controllers, different RAID layout, etc.)? Our budget limit is $50k. The thing I

Re: [PERFORM] Optimizing disk throughput on quad Opteron

2006-10-21 Thread Joshua D. Drake
> I heard some say that the transaction log should be on > it's own array, others say it doesn't hurt to have it > on the same array as the OS. Is it really worthwhile > to put it on it's own array? > > Can you guys see any glaring bottlenecks in my layout? > Any other suggestions to offer (thr

Re: [PERFORM] Is ODBC that slow?

2006-10-21 Thread Joshua D. Drake
> Yeah, but they had to back-off from that plan, and AFAIK it only uses > libpq for the auth stuff and then switch to dealing with the protocol > directly. > > I don't know what the reasoning was though :-) I guess Joshua would > know. I'm not involved in that project. I only know that recentl

Re: [PERFORM] Is ODBC that slow?

2006-10-21 Thread Alvaro Herrera
Merlin Moncure wrote: > On 10/21/06, Alvaro Herrera <[EMAIL PROTECTED]> wrote: > >Try Command Prompt's ODBC driver. Lately it has been measured to be > >consistently faster than psqlODBC. > > > >http://projects.commandprompt.com/public/odbcng > > just curious: what was the reasoning to reimpleme

[PERFORM] Optimizing disk throughput on quad Opteron

2006-10-21 Thread John Philips
Hello, I'm working out specs for a new database server to be purchased for our organization. The applications the server will handle are mainly related to network operations (monitoring, logging, statistical/trend reports, etc.). Disk I/O will be especially high with relation to processing netwo

Re: [PERFORM] Is ODBC that slow?

2006-10-21 Thread Carlo Stonebanks
> carlo: please, please, get your mail server to quit telling me your > mailbox is full :) Merlin, sorry about that. This is the first I've heard of it. Carlo ---(end of broadcast)--- TIP 2: Don't 'kill -9' the postmaster

Re: [PERFORM] pgBench on Windows

2006-10-21 Thread Magnus Hagander
> Hello Performancers, > > has anyone a pgBench tool running on Windows? Does the one that ships in the installer not work? //Magnus ---(end of broadcast)--- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs

Re: [PERFORM] Index on two columns not used

2006-10-21 Thread Péter Kovács
Sorry for the amateurish question, but what are "heap tuples"? Also, my understanding is that the following statement applies only for composite indexes: "PostgreSQL can't use the values stored in the index to check the join condition". I assume that PostgreSQL will be able to use single-colum