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[Bug libc/21396] New: Use AVX2 memcpy/memset on Skylake server
- From: "hjl.tools at gmail dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Tue, 18 Apr 2017 18:34:14 +0000
- Subject: [Bug libc/21396] New: Use AVX2 memcpy/memset on Skylake server
- Auto-submitted: auto-generated
https://sourceware.org/bugzilla/show_bug.cgi?id=21396
Bug ID: 21396
Summary: Use AVX2 memcpy/memset on Skylake server
Product: glibc
Version: 2.26
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: hjl.tools at gmail dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
Target: x86-64
On Skylake server, AVX512 load/store instructions in memcpy/memset may
lead to lower CPU turbo frequency in certain situations. Use of AVX2
in memcpy/memset has been observed to have improved overall performance
in many workloads due to the higher frequency.
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