Glibc sysdeps: dl_platform detection effectively performs “cripple AMD”

Re:Glibc sysdeps: dl_platform detection effectively performs... by smcl on Sunday September 08, 2019 @06:26AM (#20909638)

Well the patch certainly met Intel's needs (a nice little performance bump over its ascendant rival) ... and since someone with a keen eye spotted it, now the rest of us can submit a patch to correct that. But I'm not sure that a back-and-forth war of self-serving patches is very productive or serves anyone very well.

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Re:Glibc sysdeps: dl_platform detection effectively performs... by randallsquared on Sunday September 08, 2019 @06:39AM (#20909681)

In this scenario, is not each self-serving patch strictly an improvement? It's at least arguable that a back-and-forth competition to provide improvements serves everyone well.

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Re:Glibc sysdeps: dl_platform detection effectively performs... by jlg23 on Sunday September 08, 2019 @06:37AM (#20909673)

> But I'm not sure that a back-and-forth war of self-serving patches is very productive or serves anyone very well.

In large FOSS projects you have enough eyes on those patches to ensure they actually converge towards some (unbiased) optimum.

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Re:Glibc sysdeps: dl_platform detection effectively performs... by alacombe on Sunday September 08, 2019 @02:52PM (#20912554)

That's a myth. When was the last time you reviewed the technical aspect of heavily specific platform code in the glibc ?

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Re:Glibc sysdeps: dl_platform detection effectively performs... by jlg23 on Sunday September 08, 2019 @07:05PM (#20913945)

about 3 months ago, in a code audit.

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