topic Re: Regarding the update of "QVD" in QlikView

Regarding the update of "QVD"

shimazaki — Mon, 26 Jan 2026 21:26:37 GMT

The QV server became unusually heavy and I checked the task manager and found that the memory was close to 100% under the name QlikView.
Then I restarted QlikViewServer on Services.
But, the memory is still running at over 80%.
When I looked at the properties of QlikView in Task Manager, I found "QVD".
　→At this point, the QlikView Management Console(QMC) is not being used to update reports.
　→The report is not even opened in the QV app on the desktop.
Please tell me why "QVD" is using so much memory when no updates are being made in the QMC task scheduler.
Which folder (hierarchy) and which file should I check for logs?

Re: Regarding the update of "QVD"

shimazaki — Tue, 26 Sep 2023 08:54:12 GMT

Thank you for your prompt response.

Could you please tell us some additional information?

How do you use QlikView's built-in monitoring tools?
Why didn't QVD disappear from the task after restarting QlikViewServer in Windows service this time?

Thank you in advance.

Re: Regarding the update of "QVD"

rwunderlich — Tue, 26 Sep 2023 10:18:06 GMT

It is normal for QV Server to run at close to 100% RAM. QV keeps as apps and calculations cached in memory for possible reuse. You can make some adjustments to QMC working set high and low values if you need to reserve RAM for other tasks on this server. See https://www.qlik.com/us/-/media/files/resource-library/global-us/direct/datasheets/ds-technical-brief-qlik-associative-engine-memory-management-cpu-en.pdf

You may also want to adjust the document idle time to allow documents to be unloaded earlier.

-Rob

Re: Regarding the update of "QVD"

shimazaki — Wed, 27 Sep 2023 00:03:14 GMT

Thank you for your response.

I understand that it is normal for the QV Server to run with close to 100% RAM.

I am afraid this is a rudimentary question, but when does QVD appear in Windows tasks?
Is it when loading data?
Also, when viewing QMC via a web browser, Qlik Server is listed under the web browser in the Windows task, but when QDV is running, does it appear in the Windows task as a QlikView application?

Re: Regarding the update of "QVD"

rwunderlich — Sat, 30 Sep 2023 09:26:44 GMT

I'm not sure as to where you are seeing "QVD" in the task manager, can you post a screenshot?

"QVD" as a task is geneerally "QlikView Distribution Service".

-Rob

Re: Regarding the update of "QVD"

shimazaki — Wed, 04 Oct 2023 00:46:51 GMT

@rwunderlich

Attached is an image.
Please check it.

Is there any way to identify which applications are deployed in memory?

Re: Regarding the update of "QVD"

rwunderlich — Mon, 02 Oct 2023 15:33:32 GMT

"qvb.exe" is a reload task.

-Rob

Re: Regarding the update of "QVD"

shimazaki — Tue, 03 Oct 2023 00:21:39 GMT

@rwunderlich

Thank you very much.

I am assuming that the memory usage is close to 100% because it is loading very heavy data, is that correct?

Also, this time, the QVD task was running at a time when I was not updating (reloading) on the QMC schedule and desktop.
What could be the cause?

Thank you again for your patience.

Re: Regarding the update of "QVD"

rwunderlich — Tue, 03 Oct 2023 20:33:04 GMT

I'm not sure. Perhaps Qlik Support can answer this for you.

-Rob

Re: Regarding the update of "QVD"

shimazaki — Wed, 04 Oct 2023 00:05:31 GMT

@rwunderlich

I see.

Thank you for your cooperation.
It was very helpful.