[Valgrind-users] Difference between "truss" and "valgrind --trace-syscalls=yes" on FreeBSD

[Yue C. <yc...@gm...>]

Hi,

I tried to use Valgrind syscall tracing utility on FreeBSD 10.1. I found
that that the results of ``truss'' and ``valgrind --trace-syscalls=yes''
are a little different. For example, the result of Valgrind has extra
syscalls like sys_sysctl, sys_fstatfs6 and [async].
Is it because Valgrind result contains the syscalls issued from the
instrumentation code, or something else?
Thanks.

Best,
Yue