[Chameleon] technical question

[Delfos, Jacob]

Marta,
 
We are using Windows servers, but do not typically have 100s of
concurrent users. Are you sure you will have that many? Because even
just 100 concurrent users will amount to almost 10,000 sessions a day,
assuming they use it for 15 minutes. That really is quite a lot. It's
easy to overestimate the number of concurrent users.
 
However, if the number is correct (>100 concurrent users), you would
really need to run a pretty good machine. If it was me, I'd run server
hardware with multiple harddisks. In the case of raster images, I'd also
probably want 2GB of RAM. You will also notice a performance difference
of up to around 30% between "Windows XP" and "Windows 2003 Server" as
operating system.
 
But as I said, it's easy to overestimate the number of users. You
*could* settle for something moderate, and check the number of users you
have with the hitcounter that Chameleon has. In your config.xml file,
set "count_hits" to "true", and make sure you have mapped "admin/htdocs"
in Apache. Then check out "viewstats.phtml". Then at least you'll know
how many people are really using it, and if there are more than you
thought, upgrade your hardware.
 
regards,
 
Jacob
 
 
 
 


________________________________

	From: chameleon-bounces at lists.maptools.org
[mailto:chameleon-bounces at lists.maptools.org] On Behalf Of marta fuster
	Sent: 11 October 2006 02:19
	To: Paul Spencer; chameleon at lists.maptools.org
	Subject: Re: [Chameleon] technical question
	
	
	Paul,
	 
	Now I've read again my message and I've noticed I've made a
mistake (I need to sleep more I guess). There were actually 4 users on a
P4 1.4GHz 512RAM and that was for testing. They've told me that was very
slow for them. Is it possible that it can be faster under Linux? Do I
have to do something tricky to make it run faster under Windows? Because
they're expecting some hundreds of users viewing the map, and with these
tests they're doing they don't feel very confident. 
	 
	What would be the minimum specs for a PC in order to run
Chameleon and Apache comfortably?
	 
	Thanks a lot and sorry for my mistakes,
	 
	Marta
	
	 
	2006/10/10, Paul Spencer <pspencer at dmsolutions.ca>: 

		Marta,
		
		this seems a little underpowered to me, but you would
need to try it
		I guess.
		
		Cheers 
		
		Paul
		
		On 10-Oct-06, at 4:12 AM, marta fuster wrote:
		
		> Hi Paul,
		> Thanks a lot for your answer! I'm running on windows
and today I've
		> been told that it is planned to be  on a windows
pentium IV, 1.4GHz
		> with 512Mb RAM and that the website  where it's going
to be
		> implemented has now peaks of 3000 users. As I don't
expect all of
		> them to be looking at my map at the same time, I'd say
a 300-users 
		> peak would be a realistic number to deal with.
		> 1.4 GHz looks very slow to me, but I'd still like to
know if a
		> single processor could handle those few hundreds of
users
		>
		> thanks a lot, 
		>
		> Marta
		>
		>
		>
		>
		> 2006/10/9, Paul Spencer <pspencer at dmsolutions.ca>:
Marta,
		>
		> Are you running windows or linux on your server?  How
many users are 
		> connecting simultaneously?
		>
		> Chameleon is heavy on server resources, so faster/more
anything on
		> the server will likely help.
		>
		> Cheers
		>
		> Paul
		>
		> On 9-Oct-06, at 6:21 AM, marta fuster wrote: 
		>
		> > Hi list,
		> >
		> > I've got a technical question. Some users have been
using my
		> > application and they claim that when a few of them
are trying to
		> > zoom my map at the same time (accessing from
different computers), 
		> > the application starts to run very slowly. I am
using Apache 2.2
		> > and a P4 - 2,6 GHz - 256Mb RAM
		> >
		> >  What are the minimum specs that I need in order to
have a reliable
		> > server? 
		> >
		> > thanks
		> >
		> > Marta Fuster
		> >
		> > _______________________________________________
		> > Chameleon mailing list
		> > Chameleon at lists.maptools.org
		> > http://lists.maptools.org/mailman/listinfo/chameleon
		>
		>
+-----------------------------------------------------------------+ 
		> |Paul Spencer
pspencer at dmsolutions.ca    |
		>
+-----------------------------------------------------------------+
		> |Chief Technology Officer
| 
		> |DM Solutions Group Inc
http://www.dmsolutions.ca/ |
		>
+-----------------------------------------------------------------+
		>
		>
		>
		>
		>
		
	
+-----------------------------------------------------------------+
		|Paul Spencer
pspencer at dmsolutions.ca    |
	
+-----------------------------------------------------------------+ 
		|Chief Technology Officer
|
		|DM Solutions Group Inc
http://www.dmsolutions.ca/ |
	
+-----------------------------------------------------------------+ 
		
		
		
		
		


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