The Sun X4600 is very good for this, the V40z is actually EOL so I'd stay away from it. You can currently do 8 dual core CPUs with the X4600 and 128GB of RAM and soon you should be able to do 8 quad core CPUs and 256GB of RAM. - Luke On 12/11/06 8:26 AM, "Cosimo Streppone" <cosimo@xxxxxxxxxxxx> wrote: > Hi all, > > I'd like to get suggestions from all you out there for > a new Postgresql server that will replace an existing one. > > My performance analysis shows very *low* iowaits, > and very high loads at times of peak system activity. > The average concurrent processes number is 3/4, with peaks of 10/15. > *Sustained* system load varies from 1.5 to 4, while peak load > reaches 20 and above, always with low iowait%. > I see this as a clear sign of more processors power need. > > I'm aware of the context-switching storm problem, but here > the cs stays well under 50,000, so I think it's not the problem > here. > > Current machine is an Acer Altos R700 (2 Xeon 2.8 Ghz, 4 Gb RAM), > similar to this one (R710): > http://www.acer.co.uk/acereuro/page9.do?sp=page4&dau34.oid=7036&UserCtxParam=0 > &GroupCtxParam=0&dctx1=17&CountryISOCtxParam=UK&LanguageISOCtxParam=en&ctx3=-1 > &ctx4=United+Kingdom&crc=334044639 > > So, I'm looking for advice on a mid-range OLTP server with > the following (flexible) requirements: > > - 4 physical processors expandable to 8 (dual core preferred), > either Intel or AMD > - 8 Gb RAM exp. to at least 32 Gb > - Compatibility with Acer S300 External storage enclosure. > The "old" server uses that, and it is boxed with 15krpm hdds > in RAID-10, which do perfectly well their job. > The enclosure is connected via 2 x LSI Logic PCI U320 controllers > - On-site, same-day hardware support contract > - Rack mount > > Machines we're evaluating currently include: > - Acer Altos R910 > - Sun Fire V40Z, > - HP Integrity RX4640 > - IBM eServer 460 > > Experiences on these machines? > Other suggestions? > > Thanks.
