Hi, any tips on how to estimate memory requirements?
For example I have 20 apps averaging 35MB each & 50 concurrent users - how much memory do I need to have as a minimum on the server??
As a rough estimate, for a setup like this you would need about 9GB dedicated to QlikView, plus about 120MB for QlikView overhead, plus an additional 1.5 GB for Windows overhead, so you should be OK with 11GB total.
The general algorithm is:
M[1...n] = 6x * (1 + 0.1y)
x = Size of each application on the HD;
y = Number of concurrent users of each application; and
M = Memory needed for each application.
Perform this calculation for each published QV application, add the results together, add a little bit more for Windows and general overhead, and you have a rough memory estimate. Caution: if your data model is not optimized, I've seen the '6' in the equation go as high as '13'
Hope this helps,
It’s hard to define the hardware sizing without having the story and the whole scenario. You also need to plan for the future in this case.
In rouge case, you can calculate the application usage with this formula:
(file size on disk 35MB) (in RAM 35 * 4 = 140 * 10%(Extra per User))
Conclusion: In RAM 140 + (14 * 50) = 840MB / Application
*These are rouge calculations!!!
You can find more information in the enterprise framework. Or you can contact me for consultation.
Affecto Sweden AB
Correct! The 10% are the amount of memory’s that’s being “allocated” to each new user.
I think there is more information regarding this in the server reference manual.