linux-kernel - Re: [PATCH v2 1/7] rslib: Add tests for the encoder and decoder

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Date:   Tue, 9 Jul 2019 20:27:09 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
cc:     Ferdinand Blomqvist <ferdinand.blomqvist@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-m68k <linux-m68k@...ts.linux-m68k.org>
Subject: Re: [PATCH v2 1/7] rslib: Add tests for the encoder and decoder

On Tue, 9 Jul 2019, Geert Uytterhoeven wrote:

> Hi Ferdinand,
> 
> On Thu, Jun 20, 2019 at 4:13 PM Ferdinand Blomqvist
> <ferdinand.blomqvist@...il.com> wrote:
> > A Reed-Solomon code with minimum distance d can correct any error and
> > erasure pattern that satisfies 2 * #error + #erasures < d. If the
> > error correction capacity is exceeded, then correct decoding cannot be
> > guaranteed. The decoder must, however, return a valid codeword or report
> > failure.
> 
> > Note that the tests take a couple of minutes to complete.
> 
> On which hardware? ;-)
> 
> JFTR, the test succeeded on m68k, after 6 hours and 12 minutes of runtime
> on an emulated Atari Falcon (ARAnyM hosted by an i7-4770).
> So far I have no plans to run it on bare metal.

It took about 4 minutes on a 10 year old lame desktop and was way faster on
one of the big irons.

Thanks,

	tglx