Surprised that no has mentioned that Clear Linux ships an updated glibc (libm in particular) -- it's been reported on phoronix earlier..
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Originally posted by thebear View PostSurprised that no has mentioned that Clear Linux ships an updated glibc (libm in particular) -- it's been reported on phoronix earlier..
(some people call those "out of tree patches" of course)
the glibc folks are nice enough to put that into their NEWS announcements: https://sourceware.org/git/?p=glibc....a1;hb=HEAD#l22
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Originally posted by thebear View PostSurprised that no has mentioned that Clear Linux ships an updated glibc (libm in particular) -- it's been reported on phoronix earlier..
On Linux i only recommend Debian or Fedora as sane optimal most of the time, others are free to go crazy up and down anytime and i don't careLast edited by dungeon; 25 January 2018, 06:28 PM.
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Originally posted by dungeon View Post
Glibc trying to force push various recent SSE instructions by default, which breaks various older builded apps for people xyz inside distro but also much elsewhere... as always we in Debian disable that. Well, just install it from experimental and look at improvments and breakages
On Linux i only recommend Debian or Fedora as sane optimal most of the time, others are free to go crazy up and down anytime and i don't care
And as always glibc testsuite tests for numerical accuracy for all of this.
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Originally posted by arjan_intel View Post
the libm optimizations do not break steam games.
(something in glibc interacted with steam. not libm)
But thanks for cool improvments i spotted some improvments with it on Debian too... or maybe i see perf improvemnts from others there, unsure in this whatever, for the rest of the world that will be in Debian 10 next year
It is early to claim anything, since all CPU vulnerabilities mitigations, firmwares... aren't in place yet... on one place improvment on other degradations and it might be in the end quite the sameLast edited by dungeon; 25 January 2018, 07:43 PM.
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Originally posted by sa666666 View PostYep, that's why I personally would like to see 32-bit distro's disappear. Then we can assume that the lowest common denominator isn't a CPU from 20 years ago, and actually make use of compiler flags for CPUs made in this decade.
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Originally posted by dungeon View PostAFAIK recently these breaks a lot of games on Steam, of course you might not care about all these but some people do and nowdays these also coming to file bugs
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Originally posted by ikey_solus View Post
Actually that was a library path issue where `x86_64` path was ignored, and the only other "big break" in glibc for Steam in the last few years was a GCC bug that generated invalid i686 glibc and crashed certain games (Such as Borderlands). Certainly nothing to do with `libm` optimisations.
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