Обсуждение: Hardware questions
Hi guys, We are in the process of buying a new dell server. Here is what we need to be able to do: - we need to be able to do queries on tables that has 10-20 millions of records (around 40-60 bytes each row) in less than 5-7 seconds. We also need the hardware to be able to handle up to 50 millions records on a few tables (5 tables in the DB). Here is what we are thinking: - Dual Xeon 2.8 Ghz - 4GB DDR2 400 Mhz Dual Ranked DIMMS (is dual ranked or single ranked makes any differences in terms of performance?). Do you guys think 4GB is reasonably enough? - 73 GB 15k RPM Ultra 320 SCSI Hard Drive - Dual on-board NICS (is this enough, or Gigabit network adapter will help?) Any input or suggestions is greatly appreciated. Thank you, Jun
On Tue, 2005-03-22 at 17:32 -0800, Junaili Lie wrote: > Here is what we are thinking: > - Dual Xeon 2.8 Ghz > - 4GB DDR2 400 Mhz Dual Ranked DIMMS (is dual ranked or single ranked > makes any differences in terms of performance?). Do you guys think 4GB > is reasonably enough? > - 73 GB 15k RPM Ultra 320 SCSI Hard Drive > - Dual on-board NICS (is this enough, or Gigabit network adapter will help?) Purely based on price alone, you could get a Sun V20z with similar config for $400 (list) less... but I don't know what discounts etc you get. AMD's processor/memory architecture has a higher throughput, and the size of the data and speeds you are asking about will need it. There is still some talk about the context-switching issue with multi-xeons. I am under the impression that it still gets some people. You will likely want more disks as well. Some recent threads on this topic: http://archives.postgresql.org/pgsql-performance/2005-03/msg00177.php http://archives.postgresql.org/pgsql-performance/2005-03/msg00238.php http://archives.postgresql.org/pgsql-performance/2005-03/msg00406.php HTH, -- Karim Nassar Department of Computer Science Box 15600, College of Engineering and Natural Sciences Northern Arizona University, Flagstaff, Arizona 86011 Office: (928) 523-5868 -=- Mobile: (928) 699-9221
Junaili, I'd suggest you don't buy a dell. The aren't particularly good performers. Dave Junaili Lie wrote: >Hi guys, >We are in the process of buying a new dell server. >Here is what we need to be able to do: >- we need to be able to do queries on tables that has 10-20 millions >of records (around 40-60 bytes each row) in less than 5-7 seconds. >We also need the hardware to be able to handle up to 50 millions >records on a few tables (5 tables in the DB). > >Here is what we are thinking: >- Dual Xeon 2.8 Ghz >- 4GB DDR2 400 Mhz Dual Ranked DIMMS (is dual ranked or single ranked >makes any differences in terms of performance?). Do you guys think 4GB >is reasonably enough? >- 73 GB 15k RPM Ultra 320 SCSI Hard Drive >- Dual on-board NICS (is this enough, or Gigabit network adapter will help?) > >Any input or suggestions is greatly appreciated. >Thank you, > > >Jun > >---------------------------(end of broadcast)--------------------------- >TIP 5: Have you checked our extensive FAQ? > > http://www.postgresql.org/docs/faq > > > >