Timers and timing, was: MySQL Performance 6.0rc1
Poul-Henning Kamp
phk at phk.freebsd.dk
Fri Oct 28 13:09:34 PDT 2005
In message <20051028200007.GP4115 at funkthat.com>, John-Mark Gurney writes:
>I was quite impressed by the speed up using the TSC over ACPI-fast...
The TSC is in essence a CPU register/counter which lives inside the
clock multiplier whereas the ACPI is an I/O port off somewhere in
PCI space on some bridge or other.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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