Dynamic Map Service instances max out problem??

[DonKang]

I have a custom javascript api application that uses a dynamic map service.
The map service is a pooled with 4 max instances and 1 min instances.

At the initial map load, the map service spins off 2 instances...
As I move around the map and perform queries, map service spins off more instances and soon uses all 4 instances.
However, I rarely see "Instances in Use" any higher than 1.. Usually 0.

Now is this a normal?? Would instances usually spin off this many from one application and the user happens to be just myself??
I think I would feel ok, if instances are at 2 but when I see 4 instances, I feel I should do someting about it.
Not sure, am I over reacting...

thanks

Don

[derekswingley1]

This is a better question for the ArcGIS Server forum:  http://forums.arcgis.com/forums/8-ArcGIS-Server-General

[DonKang]

Yes, I agree...
This question maybe geared more towards the general server issue.

But I would also like know if performing queries (multiple queries, one after another) or any type of server side request
would spin off the instances or even corrupt the instances.
I would like to findout if my coding pattern (how I use querytasks) can potentially cause issues.

thanks

Don