From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 13AE538515E7; Thu, 25 Mar 2021 03:00:44 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 13AE538515E7 From: "skpgkp2 at gmail dot com" To: glibc-bugs@sourceware.org Subject: [Bug libc/24872] __memmove_avx_unaligned_erms() performs significantly much slower than __memcpy_ssse3() Date: Thu, 25 Mar 2021 03:00:44 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: glibc X-Bugzilla-Component: libc X-Bugzilla-Version: 2.27 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: skpgkp2 at gmail dot com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at sourceware dot org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: security- X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://sourceware.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: glibc-bugs@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Glibc-bugs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 25 Mar 2021 03:00:45 -0000 https://sourceware.org/bugzilla/show_bug.cgi?id=3D24872 --- Comment #4 from Sunil Pandey --- Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz Function: memcpy Variant: large __memcpy_avx_unaligned_erms __memcpy_ss= se3 =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D length=3D65543, align1=3D0, align2=3D0: 20262.10 25710.00 = (-26.89%)=20=20 length=3D65551, align1=3D0, align2=3D3: 23048.80 25749.00 = (-11.72%)=20=20 length=3D65567, align1=3D3, align2=3D0: 19265.80 25841.80 = (-34.13%)=20=20 length=3D65599, align1=3D3, align2=3D5: 24043.60 26029.60 = ( -8.26%)=20=20 length=3D131079, align1=3D0, align2=3D0: 7462.25 9998.31 = (-33.99%)=20=20 length=3D131087, align1=3D0, align2=3D3: 8639.44 10153.40 = (-17.52%)=20=20 length=3D131103, align1=3D3, align2=3D0: 7628.75 9808.25 = (-28.57%)=20=20 length=3D131135, align1=3D3, align2=3D5: 9045.75 9898.38 = ( -9.43%)=20=20 length=3D262151, align1=3D0, align2=3D0: 19262.30 25770.40 = (-33.79%)=20=20 length=3D262159, align1=3D0, align2=3D3: 21997.60 25890.30 = (-17.70%)=20=20 length=3D262175, align1=3D3, align2=3D0: 20201.20 25578.40 = (-26.62%)=20=20 length=3D262207, align1=3D3, align2=3D5: 22811.20 25794.90 = (-13.08%)=20=20 length=3D524295, align1=3D0, align2=3D0: 43116.70 59701.20 = (-38.46%)=20=20 length=3D524303, align1=3D0, align2=3D3: 46403.70 60424.80 = (-30.22%)=20=20 length=3D524319, align1=3D3, align2=3D0: 45007.30 60604.30 = (-34.65%)=20=20 length=3D524351, align1=3D3, align2=3D5: 48101.60 62129.50 = (-29.16%)=20=20 length=3D1048583, align1=3D0, align2=3D0: 96434.60 106336.00 = (-10.27%)=20=20 length=3D1048591, align1=3D0, align2=3D3: 94443.60 107462.00 = (-13.78%)=20=20 length=3D1048607, align1=3D3, align2=3D0: 94346.10 112411.00 = (-19.15%)=20=20 length=3D1048639, align1=3D3, align2=3D5: 99799.90 107768.00 = ( -7.98%)=20=20 length=3D2097159, align1=3D0, align2=3D0: 192824.00 214921.00 = (-11.46%)=20=20 length=3D2097167, align1=3D0, align2=3D3: 187735.00 209353.00 = (-11.52%)=20=20 length=3D2097183, align1=3D3, align2=3D0: 187375.00 209017.00 = (-11.55%)=20=20 length=3D2097215, align1=3D3, align2=3D5: 187469.00 225963.00 = (-20.53%)=20=20 length=3D4194311, align1=3D0, align2=3D0: 411755.00 429404.00 = ( -4.29%)=20=20 length=3D4194319, align1=3D0, align2=3D3: 398156.00 449104.00 = (-12.80%)=20=20 length=3D4194335, align1=3D3, align2=3D0: 387210.00 454115.00 = (-17.28%)=20=20 length=3D4194367, align1=3D3, align2=3D5: 408760.00 434598.00 = ( -6.32%)=20=20 length=3D8388615, align1=3D0, align2=3D0: 969548.00 1024490.00 = ( -5.67%)=20=20 length=3D8388623, align1=3D0, align2=3D3: 955586.00 1011370.00 = ( -5.84%)=20=20 length=3D8388639, align1=3D3, align2=3D0: 944273.00 987034.00 = ( -4.53%)=20=20 length=3D8388671, align1=3D3, align2=3D5: 938864.00 1008330.00 = ( -7.40%)=20=20 length=3D16777223, align1=3D0, align2=3D0: 3201330.00 3225610.00 = ( -0.76%)=20=20 length=3D16777231, align1=3D0, align2=3D3: 3027600.00 3269680.00 = ( -8.00%)=20=20 length=3D16777247, align1=3D3, align2=3D0: 3018960.00 3208180.00 = ( -6.27%)=20=20 length=3D16777279, align1=3D3, align2=3D5: 3056540.00 3295340.00 = ( -7.81%)=20=20 length=3D33554439, align1=3D0, align2=3D0: 6797390.00 6965460.00 = ( -2.47%)=20=20 length=3D33554447, align1=3D0, align2=3D3: 6660090.00 6948620.00 = ( -4.33%)=20=20 length=3D33554463, align1=3D3, align2=3D0: 6695920.00 6848340.00 = ( -2.28%)=20=20 length=3D33554495, align1=3D3, align2=3D5: 6632220.00 6942640.00 = ( -4.68%) --=20 You are receiving this mail because: You are on the CC list for the bug.=