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Forum Discussion
oshae
Apr 24, 2016Tutor
Samba daemon using almost 100% CPU
I've only noticed this happening for around 6 months now. I'm running the latest R4 firmware on my Pro 6. Every now and then I will notice file transfers are slow, so I ssh in and fire up top. sm...
StephenB
Apr 25, 2016Guru - Experienced User
How full is the OS partition?
- oshaeApr 25, 2016Tutor
Assuming that's /dev/md0?
Mine shows 44% used; 2.2GB available.
Strange thing is a reboot will usually resolve the issue. I rebooted after my initial post and it seems to be ok still today. However, it is typically only a matter of time before I notice file transfers starting to slow down. And when I log on and run top it will be smbd at 95%+
- StephenBApr 26, 2016Guru - Experienced User
Does this happen often?
I'm wondering if shutting down crashplan for a bit makes sense (if only to rule it out).
- oshaeApr 26, 2016Tutor
I guess it doesn't happen non-stop. I would say once a week to once every couple weeks. When it happens I've tried shutting down the crashplan service to see if smbd CPU comes down but it does not. It's usually a reboot that fixes it, and occasionally I have seen it spike back up again after a reboot.
I understand that crashplan puts extra load on the NAS, but not sure how it can impact the samba daemon. Plus crashplan on my NAS is pretty idle. I only have it configured to back up certain shares that don't change much, if at all, and all of the data has already been uploaded to their cloud.
I suppose I could shut down crashplan and just leave it for a few weeks to see if it prevents the smbd issue. Curious what the true cause is however.
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