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  • >> Go to dataminer.services

How long should a windows server wait for Dataminer and/or Cassandra services to stop?

Solved1.89K views28th August 2023BPA Dataminer Service dma restart EPM WaitToKillServiceTimeout
1
Shawn Michaud [SLC] [DevOps Member]582 15th August 2023 0 Comments

We are interested if the default time that Windows waits for a process to end before terminating is long enough or not. This comes after one of our EPM Lab systems experienced an issue following a server restart and we question if it would have been a problem had everything shutdown from the dataminer perspective gracefully. Windows event log indicate a server restart was initiated and we see from Dataminer the alarm attached below.

There is a registry key that determines how long the server should wait after a request to restart and the default setting is very low in my opinion @ 5 seconds.

Is there a recommendation or a known value we could set this for to ensure everything is gracefully restarted naturally via the OS?

Path: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control

Key: WaitToKillServiceTimeout

Marieke Goethals [SLC] [DevOps Catalyst] Selected answer as best 28th August 2023

3 Answers

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Michiel Saelen [SLC] [DevOps Enabler]5.63K Posted 16th August 2023 1 Comment

Hi Shawn,

I believe the time needed to gracefully close the services might depend on the load on your systems and the HW you are using. I don't have statistics on all systems. In general, most systems stop under one minute. If you want to measure this on your system to have a more ideal setting, you can open up the task manager and look at how long it takes for the SL* processes to disappear after initiating the DataMiner stop.

Marieke Goethals [SLC] [DevOps Catalyst] Selected answer as best 28th August 2023
Shawn Michaud [SLC] [DevOps Member] commented 16th August 2023

Thanks Michiel! We’ll take this away and let you know if there are further questions.

0
Miguel Obregon [SLC] [DevOps Catalyst]18.56K Posted 17th August 2023 0 Comments

Hi Shawn,

Working with different EPM systems, so far we didn't have to modify the registry setting to increase the timeout. In EPM I-DOCSIS solution, we include an extra step in our maintenance procedure which is stopping the elements that contributes the most with the load of the DMAs (before to restart the DMA).

Hope it helps.

Miguel Obregon [SLC] [DevOps Catalyst] Answered question 17th August 2023
0
Bert Vandenberghe [SLC] [DevOps Enabler]8.12K Posted 17th August 2023 0 Comments

Hi Shawn,

In general, my recommendation would be not to touch this registry setting unless there is a clear reason to change this.

EPM systems might be a special case and host huge collector or frontend/backend elements, but even then I don't immediately see a reason why stopping the DataMiner processes abruptly during an OS restart would cause an issue... But I could be missing something of course, and then increasing that time might indeed help out.

Bert

Bert Vandenberghe [SLC] [DevOps Enabler] Answered question 17th August 2023
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