Re: [Help-tar] Extraction performance problem

[Paul Eggert]

On 02/05/2015 09:04 AM, Mark Lehrer wrote:
> I haven't yet done a full blktrace analysis yet, but the 250MB/sec 
> speed seems to match other tests I have done with a 512 byte block 
> size.  Is it possible to do the equivalent of dd's "obs" option, to 
> increase the output block size to 4k, 64k, or even 1M? 

Sure, the -b option does that.  The default is 20 (i.e., 20 x 512 = 10 KiB).

> has anyone tried to make a multi-threaded version?

Not as far as I know.  It's not clear that going multithreaded would be 
worth the hassle.