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From: "amonakov at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug stdio/17577] sscanf extremely slow on large strings
Date: Mon, 15 Mar 2021 21:56:46 +0000	[thread overview]
Message-ID: <bug-17577-131-G7UajzBPuA@http.sourceware.org/bugzilla/> (raw)
In-Reply-To: <bug-17577-131@http.sourceware.org/bugzilla/>

https://sourceware.org/bugzilla/show_bug.cgi?id=17577

--- Comment #5 from Alexander Monakov <amonakov at gmail dot com> ---
That is a difference in constant factor, on 64-bit it uses AVX2 rawmemchr
(selected by ifunc), but on 32-bit sscanf invokes basic ia32 rawmemchr
implementation directly.

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      parent reply	other threads:[~2021-03-15 21:56 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-11 13:49 [Bug stdio/17577] New: " shabbyx at gmail dot com
2014-11-11 13:50 ` [Bug stdio/17577] " shabbyx at gmail dot com
2021-03-01 12:56 ` marat at slonopotamus dot org
2021-03-02 12:46 ` amonakov at gmail dot com
2021-03-03  2:22 ` benfrantzdale at gmail dot com
2021-03-03  2:26 ` benfrantzdale at gmail dot com
2021-03-03  3:35 ` fweimer at redhat dot com
2021-03-03 19:31 ` bugdal at aerifal dot cx
2021-03-15 20:38 ` dkk089 at gmail dot com
2021-03-15 21:56 ` amonakov at gmail dot com [this message]

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