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USENIX LISA2021 Computing Performance: On the Horizon
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Brendan Gregg | InformIT
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Created: 2021-04-01
Reading time: ~16 minutes
A lot of programmers believe that compilers are magic black boxes in which you put
your messy code in and get a nice optimized binary out. The hallway philosophers
will often start a debate on which language features or compiler flags to use
in order to capture the full power of the compiler’s magic.
If you have ever seen the GCC codebase, you would really believe it must be doing
some magical optimizations coming from another planet.
Nevertheless, if you analyze the compiler’s output you will found out that
the compilers are not really that great at optimizing your code. Not because
Brendan Gregg
Brendan Gregg is an industry expert in computing performance and cloud computing. He is a senior performance architect at Netflix, where he does performance design, evaluation, analysis, and tuning. The author of multiple technical books including
BPF Performance Tools and
Systems Performance, he received the USENIX LISA Award for Outstanding Achievement in System Administration. He has also been a kernel engineer and performance lead, and was program co-chair for the USENIX LISA 2018 conference. He has created performance tools included in multiple operating systems, and visualizations and methodologies for performance analysis, including flame graphs.
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