Stefan Lambrev wrote:
Hi Kris,
Kris Kennaway wrote:
Stefan Lambrev wrote:
Kris Kennaway wrote:
Stefan Lambrev wrote:
You should use hwpmc to verify where the application is really
spending time, since gettimeofday doesn't seem to account for it all.
pmc: Unknown Intel CPU.
module_register_init: MOD_LOAD (hwpmc, 0xffffffff8029906d,
0xffffffff8054c500) error 78
OK, this is the famous problem with modern CPUs that jkoshy has
declined to work around :( There are patches for this in perforce, see
http://perforce.freebsd.org/changeView.cgi?CH=126189
I got hwpmc to compile (but only as module)
hwpmc: TSC/1/0x20<REA> P6/2/0x1ff<INT,USR,SYS,EDG,THR,REA,WRI,INV,QUA>
but when I try to use pmcstat I receive this error message:
pmcstat: ERROR: Initialization of the pmc(3) library failed: Device not
configured
kldstat lists hwpmc.ko as loaded and I have options HWPMC_HOOKS in my
kernel.
Any idea what's go wrong?
You also need changes to the userland libpmc and pmcstat. They should
also be in that (or related) p4 changeset though.
Kris
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