Winrar hardly using cpu?

[Energize]

Surely winrar should be using 100% of the cpu?

 

[Energize]

Nope, sata II drive.

 

[Energize]

You're not going to see heavy CPU usage when extracting from an archive. The demanding aspect is compression, not extraction.

But at the figures you see above extraction works out at 11.7MB/s, which implies a cpu bottleneck considering the hdd has an average read speed of 65MB/s.

 

[Energize]

65MB/s read speed is all well and good, but that's not the bottleneck, it needs to write as well, and reading and writing from the same drive will slow things down even further (it's a mechanical device and as such isn't 'full duplex')

Yeah but were talking about a factor of 6, I have moved files accross the hdd much faster than this!

 

[Energize]

Transferring accross the lan is no problem as you can see here,

I'm certain that winrar used to be faster than this though.