OProfile

Jianpeng Dong wrote:
> Hi all,
>  
> I installed the oprofile 0.5.4 (BTW, oprofile 0.6.0 and 0.6.1 could not 
> be compiled at all, but after ignore the gui-related codes, I also 
> managed to compile and build them) on a RH-7.2 486 compatible computer. 
> However, when I tried to run "opcontrol --no-vmlinux --init", I got an 
> error message like,
>  
> Cannot locate oprofile module

you must fix that first:

$ modprobe oprofile
should load correctly the driver, it is installed in
/lib/modules/`uname -r`/oprofile/oprofile.o

after a correct load of the driver you must get:
$ grep /proc/devices oprof
254 oprof
$ grep /proc/modules oprofile
oprofile               17736  -1

look also with dmesg for any error messages.

you can force the driver to use RTC mode, look the documentation, the
FAQ also mention than RTC kernel driver must no be builtin in the kernel
nor loaded if it was built as sdriver, see the FAQ

regards,
Philippe Elie

On Fri, Sep 19, 2003 at 04:04:24PM -0700, Jianpeng Dong wrote:

> I read the news arhive, someone mentioned that oprofile only
> supports SMP machines for RH 7.3 (or else 8.0, 9.0). How about the story
> with RH-7.2?

This is nonsense. You are using a Red Hat kernel - that means that any
problems are your problems. Red Hat chose to disable oprofile on RH7.x,
not us. Use a Linus kernel and then it's ours.

john
-- 
Khendon's Law:
If the same point is made twice by the same person, the thread is over.