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Re: [Help-tar] Extraction performance problem

From: Paul Eggert
Subject: Re: [Help-tar] Extraction performance problem
Date: Thu, 05 Feb 2015 10:22:39 -0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0

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.

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