[web-devel] new fast-logger and date-cache

Bryan O'Sullivan bos at serpentine.com
Tue Sep 4 21:43:46 CEST 2012


On Sun, Sep 2, 2012 at 7:56 PM, Kazu Yamamoto <kazu at iij.ad.jp> wrote:

> To my experience, the assumption 2) is not right. getttimeofday()
> is implemented in user land in Linux 3 but it is a system call
> in Linux 2.
>

Just a nit: your history here is not correct. gettimeofday has been
implemented as a vsyscall for a long time, maybe 5 years. And while it's
faster than int 0x80, it's not that much faster: 2x or so on modern
hardware.
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