Bug #95965 for Task-Digest: Missing the fastest: crc32

Sun May 25 18:35:53 2014 rurban [...] x-ray.at - Ticket created

Subject:

Missing the fastest: crc32

Compress::Zlib contains the fast (SSE2 enabled) version for crc32 which blows away all other digests. 1 CPU cycle (+ 3 wait-cycles if not in parallel) per word in modern Intel or ARM CPU's. zlib uses Adler's parallel version. There's nothing faster. Note that the other crc32 versions on CPAN, like String::CRC32 and Digest::CRC32 are not recommended.

Sun May 25 18:48:25 2014 gray [...] cpan.org - Correspondence added

On Sun May 25 18:35:53 2014, rurban@x-ray.at wrote: Show quoted text

> Compress::Zlib contains the fast (SSE2 enabled) version for crc32 > which blows away all other digests. > 1 CPU cycle (+ 3 wait-cycles if not in parallel) per word in modern > Intel or ARM CPU's. > > zlib uses Adler's parallel version. There's nothing faster. > > Note that the other crc32 versions on CPAN, like String::CRC32 and > Digest::CRC32 are not recommended.

Task::Digest clearly states it's only comparing cryptographic message digests. CRC32 is only a checksumming algorithm.

Sun May 25 18:48:26 2014 The RT System itself - Status changed from 'new' to 'open'

Sun May 25 18:48:26 2014 gray [...] cpan.org - Status changed from 'open' to 'rejected'

Wed May 28 16:45:09 2014 reini.urban [...] gmail.com - Correspondence added

Subject:	Re: [rt.cpan.org #95965] Missing the fastest: crc32
Date:	Wed, 28 May 2014 15:44:54 -0500
To:	bug-Task-Digest [...] rt.cpan.org
From:	Reini Urban <reini.urban [...] gmail.com>

On May 25, 2014, at 5:48 PM, gray via RT <bug-Task-Digest@rt.cpan.org> wrote: Show quoted text

> Task::Digest clearly states it's only comparing cryptographic message digests. CRC32 is only a checksumming algorithm.

Oh sorry, didn’t read that.