CVSROOT: /cvs
Module name: src
Changes by: [email protected] 2023/01/09 18:01:18
Modified files:
sys/arch/i386/i386: machdep.c
Log message:
i386: identifycpu(): only calibrate_cyclecounter() on primary CPU
On i386 during identifycpu(), we call calibrate_cyclecounter() for every
CPU in the system. This is pointless: every new call clobbers the cpuspeed
measured during the prior call. It is also extremely slow: every call to
calibrate_cyclecounter() takes about 1 second.
Instead, let's only call calibrate_cyclecounter() once, on the primary CPU.
Multiprocessor i386 machines will now boot much faster.
ok deraadt@
