From: Paul Eggert <eggert@cs.ucla.edu>
Date: Fri, 16 Oct 2015 19:05:58 +0000 (-0700)
Subject: doc: remove obsolete performance comment
X-Git-Tag: v8.25~121
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0cb602e33aa4972170fa676547e4dd8dca63c00c;p=thirdparty%2Fcoreutils.git

doc: remove obsolete performance comment

sha512sum can be faster than sha256sum.
E.g., ‘dd if=/dev/zero bs=1024k count=1024 | time sha256sum’
reports 8.16 user CPU seconds on my host, whereas sha512sum
consumes 5.45 seconds (Fedora x86-64 on an AMD Phenom II X4 910e).
Although sha512sum is still considerably slower on x86, a good
chunk of uses are on 64-bit hosts and anyway there’s little point
to scaring people away from sha512sum nowadays.
* doc/coreutils.texi (sha2 utilities): Remove obsolete comment.
---

diff --git a/doc/coreutils.texi b/doc/coreutils.texi
index a029ec6c83..c988aca4f2 100644
--- a/doc/coreutils.texi
+++ b/doc/coreutils.texi
@@ -3948,9 +3948,6 @@ these commands are precisely the same as for @command{md5sum}
 and @command{sha1sum}.
 @xref{md5sum invocation}.
 
-Note: The SHA384 and SHA512 digests are considerably slower to
-compute, especially on 32-bit computers, than SHA224 or SHA256.
-
 
 @node Operating on sorted files
 @chapter Operating on sorted files