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Bug#871835: more speedup



On Mon, 2017-09-11 at 00:40 +0200, Thomas Lange wrote:
> Here's another patch, that improves speed. It needs grep -P which is
> not available in busybox. But I do not know if debootstrap is used in
> a busybox enviroment.

It's meant to be able to run on non-GNU systems, including those using
busybox.  (Also, the GNU grep manual page says "this is experimental".)

Ben.

> The execution time is now
> 
> real    0m39.141s
> user    0m38.924s
> sys     0m2.980s
> 
> So the user time drops from 50 to under 40 seconds on a 4-core
> machine.
> 
-- 
Ben Hutchings
All the simple programs have been written, and all the good names
taken.

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