Windows diagnosed a low virtual memory condition - Microsoft-Windows-Resource-Exhaustion-Detector
Hi,
In one of our qliksense server, we see the following error:
Event Description:
Windows successfully diagnosed a low virtual memory condition. The following programs consumed the most virtual memory: Engine.exe (10928) consumed 11720503296 bytes, nlparser_r.exe (1020) consumed 1560207360 bytes, and Repository.exe (8108) consumed 518823936 bytes.
Any idea on where exactly to and see the cause for this low virtual memory condition?
QlikSense is an in memory application and it does consume a lot of RAM.
When you open an app on the server it gets loaded to RAM. The app seizes in RAM in not the same as on disk. It can be many times bigger in memory.
A 1 GB app could be 5-10 in RAM (or more), it depends on the data model and design of the document.
Once the apps are loaded it stays in memory until the app timeout has passed (default 8h). The appt timeout does not start to count down until all sessions against it is closed.
It is normal that the memory consumption stays high even if no one is logged in.
We also cache calculations and session information. This does not get cleared when the app gets unloaded but stays in memory until the working set limit is reached.
Then we start to clear it out, started with the data that was used the longest ago.
