glibc added a vdo mapping directly to the kernel time page, so gettimeofday is not a syscall, and the results in the linux 4.0-4.2 era were in the 40ns range.
Last I looked, musl used the syscall, which was much, much worse. _______________________________________________ LibreQoS mailing list LibreQoS@lists.bufferbloat.net https://lists.bufferbloat.net/listinfo/libreqos
