11-05-2011 09:26 AM - edited 11-05-2011 10:15 AM
I have tried installing Ghost on two different computers. On a 3 year old Intel Q9450 and on a brand new AMD A8-3850 quad-core.
When backing up on the Intel with High compression Ghost uses all four kernels 100%. When backing up on the new AMD it uses 1 core 100% (or 4 cores 25%) and I achieve a much lower backupspeed.
Can it really be that Ghost is not able to use all four cores on a new AMD CPU?
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11-05-2011 01:43 PM
Isn't that determined by the OS? I have an Intel Q9400 Quad Core. I've never really paid attention to the CPU usage during a backup, but I don't think it is 100%. I don't even notice it running like I did on my old single core CPU. I'll try to watch the usage on the next backup and let you know what it does.
11-05-2011 06:00 PM - edited 11-05-2011 06:05 PM
On my Core 2 Quad Q9400, the CPU usage is between 14% and 25% during backup. In Task Manager it does seem all 4 cores are being used.
EDIT: That was with standard compression.
I tried it again with compression set to high and CPU usage stayed at 24% - 26%.
11-06-2011 01:08 AM - edited 11-06-2011 01:26 AM
the cpu utilization is of course dependent of the network speed and the speed of the target. Only if the network speed and the target speed is high enough the CPU speed will be a bottleneck. I am only using 12% if my gigaspeed network so clearly it is not my network that is slowing things down. It should be pretty easy for a Norton Employee to clarify if Ghost is AMD multicore ready.
I have now tried Ghost on my own AMD Phenom II X3 and here Ghost uses all 3 kernels 100% and 20% of the network speed. I have an SSD so here it is not my harddisk that is the bottleneck. I might have to try it again on the AMD A8.
11-06-2011 11:20 AM
In my experience backing up to the NAS is very slow in comparison to backing up to a USB device and even slower when backing up to a eSata device.
The only time I use the NAS for backups is in the case of an Archive, other than that stick to close coupled USB devices or preferably eSata connected devices.