ADS Server 100% CPU

[marcus_herz]

Hi

Since 3 days the ADS Server runs with 100%CPU about every 10 min for about 2 min without any reason. We restartet the server, reindexed all (ADD with ADT). No Windows updates done. Nothing obvoius changed.

Usually it runs between 20% up to 50 %

ADS Version 12.0.0.02

Windows Server 2016 (no Servicepack) Ver. 9.11.1493

I do not have any clues what could have changed or what causes the behaviour.

Nor do I have any more ideas how to fix that.

Anyone can help?

[marcus_herz]

I found this link, but do not have access to it:

https://userapps.support.sap.com/sap/support/knowledge/en/2305260

What is it saying?

[marcus_herz]

After further investigation I could track down the problem that's causing this CPU Peak (still after running with 16 kernels)

to a procedure calling:

EXECUTE PROCEDURE sp_SignalEvent(_ID, false, 0, _VAL );

It seem signaling is the problem. Ther are little less than 50 users. everyone 's running

EXECUTE PROCEDURE sp_WaitForAnyEvent

periodicly in a thread. Any ideas?

[joachim_drr]

10 min looks like FLUSH_FREQUENCY value ... empty batteries or defective RAID controller?