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hmz007
6d24f2138b
|
3 years ago | |
|---|---|---|
| .. | ||
| Makefile | 3 years ago | |
| README | 3 years ago | |
| checktsc.c | 3 years ago | |
| sched.h | 3 years ago | |
README
checktsc is a user space program that checks TSC synchronization between pairs of CPUs on an SMP system using a technique borrowed from the Linux 2.6.18 kernel. The test passes if all TSCs are within +/- "threshold" clock cycles of each other. The default value of "threshold" is 500 clock cycles and can be changed using the --threshold option. Default behaviour is to check all of the CPUs on a system and to report the observed difference in TSC values between each pair of CPUs. The --cpus option can be used to specify a subset of the CPUs to test. When run with the --silent option the test produces no output (other than for catastrophic errors) and success or failure is indicated by a 0 or 1 exit status from the program. Author: md@google.com License: GPL