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From: Dave Taht <dave.taht@gmail.com>
Date: Mon, 31 Oct 2022 14:54:19 -0700
Message-ID: <CAA93jw4EbnhFDhF3uWGPAQ+m6Fs8cd44fscnQq8XPfDTUxZdLA@mail.gmail.com>
To: Herbert Wolverson <herberticus@gmail.com>
Cc: libreqos <libreqos@lists.bufferbloat.net>
Content-Type: text/plain; charset="UTF-8"
Subject: Re: [LibreQoS] Integration system, aka fun with graph theory
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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.