DD not working--SUCCESS!

Les Mikesell lesmikesell at gmail.com
Fri Aug 31 17:50:42 UTC 2007


Mikkel L. Ellertson wrote:

> dd should not use lots of CPU time. The bottleneck is disk access
> speed. Depending on the drivers used, and some tweaking, the system
> may be spending a lot of time in the disk driver routines doing
> basically nothing.

CPU use will depend on your disk controller.  IDE controllers have a lot 
of CPU overhead for seeks/positioning even if DMA is used for the data 
transfer - that's why people still use SCSI for busy servers.

-- 
   Les Mikesell
    lesmikesell at gmail.com




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