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[Bug string/25131] memcpy perfomance problem with ARM 32 A9be due to high cache-misses
- From: "fweimer at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Mon, 25 Nov 2019 12:04:00 +0000
- Subject: [Bug string/25131] memcpy perfomance problem with ARM 32 A9be due to high cache-misses
- Auto-submitted: auto-generated
- References: <bug-25131-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=25131
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
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CC| |fweimer at redhat dot com
--- Comment #6 from Florian Weimer <fweimer at redhat dot com> ---
The usual way we deal with this is to use some mechanism to probe for the
platform in question and use an IFUNC handler to switch to the optimized
version for this platform only.
I'm not sure if 32-bit Arm platform variants can be identified easily at the
CPU level or from the auxiliary vector. It may be necessary to do some kernel
work first.
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