Re: What HW / OS is recommeded

We use perl for the heavy batch jobs, the web interface is written using 
JSP / applets.
If we would change these then it would be Java or C. But all the heavy 
stuff is handled by Stored Procedures so  I dont see a real need for a 
change.

I actually am more interested to hear if there are an recommended 
systems or setups.
Also with regard to 2/4 CPUs or 32/64 bit etc.





Scott Marlowe wrote:

>On Thu, 2004-12-16 at 06:39, Michael Ben-Nes wrote:
>  
>
>>I think and please correct me that Postgres loves RAM, the more the better.
>>
>>Any way RAID5 is awful with writing, go with  RAID1 ( mirroring )
>>    
>>
>
>With battery backed cache and a large array, RAID 5 is quite fast, even
>with writes.  Plus with a lot of drives in a mostly read environment,
>it's quite likely that each read will hit a different drive so that many
>parallel requests can be handled quite well.  The general rule I use is
>6 or fewer drives will do better in RAID 1+0, 7 or more will tend to do
>better with RAID 5.
>
>  
>
>>Perl is very slow, maybe you can use PHP ?
>>    
>>
>
>While mod_perl and its relations have never been fast running under
>apache in comparison to PHP, it's no slouch, paying mostly in startup
>time, not run time.  For complex apps, the startup time difference
>becomes noise compared to the run time, so it's no big advantage to
>PHP.  I really like PHP by the way.  But Perl is pretty nice too. 
>
>Run the Unix OS you're most comfortable with, knowing that PostgreSQL
>gets lots of testing on the free unixes more so than on the commercial
>ones.  Give it a machine with plenty of RAM and a fast I/O subsystem,
>and two CPUS and you'll get good performance.  If your needs exceed the
>performance of one of these machines, you're probably better off going
>to a pgpool / slony cluster than trying to build a bigger machine.
>
>
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