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Profile Guided Optimizations (PGO) Likely Coming To Linux 5.14 For Clang
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For DevilutionX I saw 0 difference when applying PGO so it's not always a given that it will help.
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Originally posted by dekernel View PostI am curious as to the full impact on performance. I can see where this could provide a big improvement for HPC type systems, but on a standard workstation, I am curious.
I wonder if some (especially enterprise targeted) distros will start to offer kernel streams optimized for certain types of workloads. Variants such as "container optimized", or "LAMP optimized" might make sense.
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After the update to track the kernel modules, I am curious as to the full impact on performance. I can see where this could provide a big improvement for HPC type systems, but on a standard workstation, I am curious. As an example, my workstation is running 2 VMs as well as the standard compliment of applications like email client and browser. If you look at the history of the CPU's, they don't tick much above 30% for short periods of time (typically when building in the VMs).
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Profile Guided Optimizations (PGO) Likely Coming To Linux 5.14 For Clang
Phoronix: Profile Guided Optimizations (PGO) Likely Coming To Linux 5.14 For Clang
Recently the mainline Linux kernel has seen a lot of improvements to its feature set when compiling it under LLVM's Clang rather than GCC as traditionally the only supported compiler. The most recent feature being brought to the Linux kernel when using Clang is finally allowing the use of compiler profile guided optimizations (PGO) for squeezing even greater performance out of the system by letting the compiler leverage the real-world profiles/metrics collected to make more informed code generation / optimization decisions...
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