perf report: no output

perf report: no output

[Mehul Choube]

Hi,

I am trying perf on SLES 11 SP1 box (virtual machine).

======= terminal output - start =======

sles11sp1:/tmp/pkgs # uname -a
Linux sles11sp1 2.6.32.59-0.3-default-fsl #1 SMP Wed Aug 15 02:00:57 EDT 2012 x86_64 x86_64 x86_64 GNU/Linux

sles11sp1:/tmp/pkgs # rpm -qa | grep 'perf'
perf-2.6.32.12-2.3.9

sles11sp1:/tmp/pkgs # zgrep "_PERF[_= ]" /proc/config.gz 
CONFIG_HAVE_PERF_EVENTS=y
CONFIG_PERF_EVENTS=y
CONFIG_PERF_COUNTERS=y
# CONFIG_DEBUG_PERF_USE_VMALLOC is not set
CONFIG_CLS_U32_PERF=y

sles11sp1:/tmp/pkgs # cat /proc/sys/kernel/perf_event_paranoid 
-1

sles11sp1:/tmp/pkgs # id
uid=0(root) gid=0(root) groups=0(root)

sles11sp1:/tmp/pkgs # perf record -af -e cycles -- sleep 10
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.242 MB perf.data (~10557 samples) ]

sles11sp1:/tmp/pkgs # du -csh perf.data 
252K    perf.data
252K    total

sles11sp1:/tmp/pkgs # perf report --sort comm,dso
# Samples: 0
#
# Overhead          Command  Shared Object
# ........  ...............  .............
#

======= terminal output - end =======

Please let me know what wrong am doing here?



TIA,
Mehul

Re: perf report: no output

[Andi Kleen]

Mehul Choube <Mehul_Choube@symantec.com> writes:

> Hi,
>
> I am trying perf on SLES 11 SP1 box (virtual machine).

perf-in-guest needs an emulated PMU, which is only available in the
latest kernels. SLES11 is far too old for it.

-Andi

-- 
ak@linux.intel.com -- Speaking for myself only