But it looks like my issue with my first test was client side, after starting the sever with the rc.d script in my first post (with nice) I did not restart the client on my computer. Its now running at full speed, just need to test if its still blocking other process when hogging the CPU.
no joy back to the drawing board, none of the above scripts where doing anything as they were not correct. once I got the correct order, and added an echo so I would know what was happening did i realize I had issues.
Installed on FreeNAS so outside the jails really sounds like a bad idea, plus I’m start to consider this a bug. Should backing up 1 computer send the backup server to 100% CPU?
I have found a “work around” that pretty much sucks but is working. Under settings -> Server I have set “Total max backup speed for local network:”, this seems to limit the CPU leaving some idle cycles and my servers still working.
I can confirm that this issues is happening on two separate FreeNAS servers running 2.0.32 in a jail and that image backups send the CPU thru the roof.
Just to be clear, its NOT an IO issue its a CPU issue.
The server that I’m testing in my office is a Quad Core Xeon, with URBackup server running and idle the CPU is at 98% idle, when I initiate a image backup from a single 100% usage and its starves enough resources from the iscsi that it breaks my connections.
This is with a backup running from a single computer.
I’m running a full image backup of a W10 system right now.
The data is coming in at about 160Mbps, it’s on the LAN, and the CPU is averaging almost 97% idle. It also happens to be backing up 8 internet clients at the same time (file backup).
Are you using deduplication on the ZFS pool or encryption?
I only have compression running and rely on the urbackup deduplication.
The FreeNAS box here is running RAIDZ2 on 2 x 6 core AMD opterons with 48GB RAM and 15 x 3TB drives in groups of 5. Almost forgot, I have 2 x SSDs running as ZIL and L2ARC. Maybe that’s what helps…?
hippy1970 thanks! you pointed me in the right direction.
I setup both FreeNAS systems the same (vanila config). The one no-standard thing that I did do because it sounded good in my head was to use gzip level 9 compression on the URBackup datastore thinking that it would save me some space.
Well I switched back to LZ4 default and my CPU issues are gone.