Hello I've recently upgraded my ceph cluster from 0.94.1 to 0.94.3 and noticed that after about a day i started getting the emails from our network/host monitoring system. The notifications were that there are too many processes on the osd servers. I've not seen this before and I am running ceph for good part of three years now. Taking a look at the osd server revealed a large number of kworker processes. The number fluctuates between about 200 and 700, but generally stays around 400+ mark.
I've restarted the osd processes, which has dropped the number of kworker processes to about 60, but after about 20-30 minutes they were back up in the 600 region. Has anyone noticed a similar behavior? How can I determine what's causing such a high number kworkers? There was no other change to the OS apart from the ceph upgrade. The kernel and system libraries remained the same. Thanks Andrei
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