I am trying to build a very Robust DB server that will support 1000+ concurrent users (all ready have seen max of 237 no pooling being used). I have read so many articles now that I am just saturated. I have a general idea but would like feedback from others. I understand query tuning and table design play a large role in performance, but taking that factor away and focusing on just hardware, what is the best hardware to get for Pg to work at the highest level (meaning speed at returning results)? How does pg utilize multiple processors? The more the better? Are queries spread across multiple processors? Is Pg 64 bit? If so what processors are recommended? I read this : http://www.postgresql.org/files/documentation/books/aw_pgsql/hw_performance/node12.html POSTGRESQL uses a multi-process model, meaning each database connection has its own Unix process. Because of this, all multi-cpu operating systems can spread multiple database connections among the available CPUs. However, if only a single database connection is active, it can only use one CPU. POSTGRESQL does not use multi- threading to allow a single process to use multiple CPUs. Its pretty old (2003) but is it still accurate? if this statement is accurate how would it affect connection pooling software like pg_pool? RAM? The more the merrier right? Understanding shmmax and the pg config file parameters for shared mem has to be adjusted to use it. Disks? standard Raid rules right? 1 for safety 5 for best mix of performance and safety? Any preference of SCSI over SATA? What about using a High speed (fibre channel) mass storage device? Who has built the biggest baddest Pg server out there and what do you use? Thanks! ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings
