Re: [perfmon2] pfmon doesn't execute the command properly with -e DISPATCHED_FPU on Phenom 9600 Black Edition

[stephane e. <er...@go...>]

Benton,

On Wed, Feb 27, 2008 at 10:41 AM, Benton Lam <ca...@gm...> wrote:
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> stephane eranian wrote:
>  | This is on an AMD, I assume.
>  |
>  | Could you send the output of the showreginfo example from libpfm?
>  |
>  | I tried this myself on 2.6.24 AMD BArcelona and it works.
>  |
>
>  I didn't quite find what is directly referred as showreginfo example,
>  but was the loop that uses pfm_get_event_name() the one that you were
>  asking?
>
Go in the source tree of libpfm.
Are look at the examples subdir.

>  I modified that example into a simple application:
>
>  #include <perfmon/pfmlib.h>
>  #include <stdio.h>
>
>  int main(){
>  ~        unsigned int i, count;
>  ~        char name[256];
>  ~        if(pfm_get_num_events(&count)!=PFMLIB_SUCCESS){
>  ~                printf("Getting count failed\n");
>  ~                return 1;
>  ~        }
>  ~        for(i=0;i < count; i++)
>  ~        {
>  ~           pfm_get_event_name(i, name, 256);
>  ~           printf("%s\n", name);
>  ~        }
>  }
>
>  and compiled using gcc -lpfm -g -o test test.c
>
>  It comes back with "getting count failed".
>
That's because you need to initialize the library first by calling
pfm_initialize().


>
>  Benton Lam
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