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Intel Lands A Nice Memset Performance Optimization In Glibc
Intel engineer Noah Goldstein has landed another nice performance optimization in the GNU C Library 'glibc' for benefiting newer Intel processors.
The focus of this latest optimization effort is benefiting at least Skylake-X and Ice Lake -- for the latter applicable to both client and server processors. But, the zero-over-zero writeback optimization has been removed as a potential side-channel attack, so there is no longer any good reason to only rely on `rep stosb` for large memsets. The patch is now in Glibc Git as yet another nice performance optimization thanks to Intel's software team and their relentless open-source tuning contributions across the stack.About The AuthorMichael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience.
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