Re: [PERFORM] PostgreSQL NetApp and NFS

2008-03-25 Thread Jurgen Haan
Well, we're not running PGSQL on a Netapp over NFS, but a DB2 Database. But nevertheless, it runs quite well. NFS is not a bad choice for your database, the big memory buffer that allocates the raid6 blocks makes it all very quick, like you're working directly on a 1+ TB ramdisk. One important thi

Re: [PERFORM] ER diagram tool

2008-03-14 Thread Jurgen Haan
ERStudio Toad Data Modeller And you might try searching sourceforge or freshmeat. sathiya psql wrote: > Is there any tool to draw ER diagram from SQL schema file... > > > no other groups are replying. -- Easyflex diensten b.v. Acaciastraat 16 4921 MA MADE T: 0162 - 690410 F: 0162 - 69041

Re: [PERFORM] dell versus hp

2007-11-09 Thread Jurgen Haan
Apart from the disks, you might also investigate using Opterons instead of Xeons. there appears to be some significant dent in performance between Opteron and Xeon. Xeons appear to spend more time in passing around ownership of memory cache lines in case of a spinlock. It's not yet clear whether or

Re: [PERFORM] Hardware for PostgreSQL

2007-11-02 Thread Jurgen Haan
Ketema wrote: > 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 us