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
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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