Hyperthreading

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n4af
Posts: 2
Joined: Wed May 12, 2010 7:16 pm

Hyperthreading

Post by n4af » Thu Jun 10, 2010 3:48 pm

I use a 3ghz hyperthreaded processor.

Testing seems to indicate that it is better to use J1 (default) as opposed to J2.
J2 drives cpu very close to saturation with little/no speed increase.
Perhaps worth includion in a future wiki update that J should reflect only # cores ?

THANKS for the great product (my favorite Linux backup),

Howard

admin
Site Admin
Posts: 550
Joined: Sat Feb 21, 2004 12:12 pm

Re: Hyperthreading

Post by admin » Thu Jun 17, 2010 5:36 pm

Yes you are right the -j option can have an unexpected impact. The speed depends on many things: CPU, disk, compression level, jobs, ... Also I am quite sure it would be possible to optimize performance by doing many tests and spending time on that, but I have to finish the "savept" stuff first and also I have to follow the priorities.

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