On Mon, Feb 23, 2026 at 3:10 AM Nazir Bilal Yavuz <[email protected]> wrote:
> Hi, > > On Fri, 20 Feb 2026 at 21:15, Nathan Bossart <[email protected]> > wrote: > > > > Yeah, the couple of small regressions seem close to (or below) the noise > > level, and IIUC yours were the only benchmarks that showed them, anyway. > > Plus, I think we'll need this change regardless as a prerequisite for the > > SIMD work. > > > > > Thank you both for the benchmarks. Results look good to me! > > > > Committed that part. > > Thank you! Attaching the SIMD patch only. > > -- > Regards, > Nazir Bilal Yavuz > Microsoft > Hello! I ran some speed tests on Nazir's v10 SIMD-only patch. I'm a bit surprised at the regression for x86 with wide rows for the 1/3rd special characters scenarios. I'm hoping it's something I did wrong. If anyone else has numbers to share, that would be excellent. x86 NARROW master 50,000,000 rows TXT : 26359.319000 ms CSV : 25661.199750 ms TXT with 1/3 escapes: 28170.085250 ms CSV with 1/3 quotes: 32638.147500 ms x86 NARROW v10 50,000,000 rows TXT : 26416.331500 ms -0.216290% regression CSV : 25318.727500 ms 1.334592% improvement TXT with 1/3 escapes: 28608.007500 ms -1.554565% regression CSV with 1/3 quotes: 32805.627750 ms -0.513143% regression x86 WIDE master 500,000 rows TXT : 26475.164250 ms CSV : 31963.478500 ms TXT with 1/3 escapes: 29671.120750 ms CSV with 1/3 quotes: 40391.616250 ms x86 WIDE v10 500,000 rows TXT : 23067.046750 ms 12.872885% improvement CSV : 23259.092250 ms 27.232287% improvement TXT with 1/3 escapes: 31796.098250 ms -7.161770% regression CSV with 1/3 quotes: 42925.792250 ms -6.274015% regression arm NARROW master 25,000,000 rows TXT : 10077.096250 ms CSV : 10310.671250 ms TXT with 1/3 escapes: 9893.155000 ms CSV with 1/3 quotes: 12133.064750 ms arm NARROW v10 25,000,000 rows TXT : 10467.816750 ms -3.877312% regression CSV : 9986.288000 ms 3.146092% improvement TXT with 1/3 escapes: 10323.173750 ms -4.346629% regression CSV with 1/3 quotes: 11843.611750 ms 2.385654% improvement arm WIDE master 250,000 rows TXT : 10568.344750 ms CSV : 13046.610500 ms TXT with 1/3 escapes: 12193.088500 ms CSV with 1/3 quotes: 16629.319000 ms arm WIDE v10 250,000 rows TXT : 9064.959000 ms 14.225366% improvement CSV : 9019.553250 ms 30.866693% improvement TXT with 1/3 escapes: 12344.497250 ms -1.241759% regression CSV with 1/3 quotes: 15495.863750 ms 6.816005% improvement -- -- Manni Wood EDB: https://www.enterprisedb.com
