RAM vs Performance, how much is more than enough?

[Ken Lord]

I have seen mapserver 4.4 and 4.6b2 use all the ram available (upto the 2GB 
in our server) ... then timeout.
 ... However I'm sure its a bug issue, not really a RAM / Performance issue.
 It happens when I have a polyline layer turned on, and all other layers 
turned off, but it works fine if any other layer is turned on with that 
polyline layer. The polyine layer is in PostGIS, but the same problem occurs 
using a shapefile of the same data.
 Cheers,
Ken Lord
Vancouver BC

 On 5/30/05, Gregor Mosheh <stigmata_blackangel at yahoo.com> wrote: 
> 
> > The speed differential between RAM and disk
> > hits is so very high, that more RAM in combination
> > with caching (which every modern OS and
> > database does aggressively) will make things run
> > faster.
> 
> Wow, even just a plain ol' webserver running a CGI?
> Good to know - thanks a lot, Paul.
> 
> On a related note: Apache 2 offers file caching. I've
> tried running Apache 2 with the usual CGI-PHP setup
> and MapScript, and the webserver would randomly freeze
> every few days, even under light traffic. Is anyone
> using Apache 2 and MapScript under Unix with good
> results? I may have been using the wrong MPM (prefork,
> which sounded safe).
> 
> 
> 
> 
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