opcontrol does not create results

[Lentes, B. <ber...@he...>]

Hi ML,

i'm new to oprofile. I have a VM (KVM) running a SLES 10 SP4 64bit, 2.6.16. System has always between 5 and 15 percent si in top (SoftIrq), but I don't know why. I hope oprofile can help me finding the culprit. I setup oprofile as it follows:

idcc-devel:~ # opcontrol --status
Daemon running: pid 21153
Event 0: BUS_DATA_RCV:1000:0:1:1
Event 0: HW_INT_RX:1000:0:1:1
Separate options: library kernel
vmlinux file: /boot/vmlinux-2.6.16.60-0.103.1-smp.gz
Image filter: none
Call-graph depth: 0

(events are not choosen especially, currently just for testing purpose).

This is my log:

idcc-devel:~ # cat /var/lib/oprofile/oprofiled.log
oprofiled started Fri Mar  6 15:39:05 2015
kernel pointer size: 8

Fri Mar  6 15:49:05 2015

Nr. sample dumps: 1
Nr. non-backtrace samples: 0
Nr. kernel samples: 0
Nr. lost samples (no kernel/user): 0
Nr. lost kernel samples: 0
Nr. incomplete code structs: 0
Nr. samples lost due to sample file open failure: 0
Nr. samples lost due to no permanent mapping: 0
Nr. event lost due to buffer overflow: 0
Nr. samples lost due to no mapping: 0
Nr. backtraces skipped due to no file mapping: 0
Nr. samples lost due to no mm: 0
Nr. samples lost cpu buffer overflow: 0
Nr. samples received: 0
Nr. backtrace aborted: 0

Fri Mar  6 15:59:05 2015

Nr. sample dumps: 3
Nr. non-backtrace samples: 0
Nr. kernel samples: 0
Nr. lost samples (no kernel/user): 0
Nr. lost kernel samples: 0
Nr. incomplete code structs: 0
Nr. samples lost due to sample file open failure: 0
Nr. samples lost due to no permanent mapping: 0
Nr. event lost due to buffer overflow: 0
Nr. samples lost due to no mapping: 0
Nr. backtraces skipped due to no file mapping: 0
Nr. samples lost due to no mm: 0
Nr. samples lost cpu buffer overflow: 0
Nr. samples received: 0
Nr. backtrace aborted: 0

Fri Mar  6 16:09:05 2015

Nr. sample dumps: 5
Nr. non-backtrace samples: 0
Nr. kernel samples: 0
Nr. lost samples (no kernel/user): 0
Nr. lost kernel samples: 0
Nr. incomplete code structs: 0
Nr. samples lost due to sample file open failure: 0
Nr. samples lost due to no permanent mapping: 0
Nr. event lost due to buffer overflow: 0
Nr. samples lost due to no mapping: 0
Nr. backtraces skipped due to no file mapping: 0
Nr. samples lost due to no mm: 0
Nr. samples lost cpu buffer overflow: 0
Nr. samples received: 0
Nr. backtrace aborted: 0

no results. I read that oprofile is able to profile virtual machines using KVM, just vm's in VMWare don't work. I use KVM.

idcc-devel:~ # l /var/lib/oprofile/samples/current/
total 8
drwxr-xr-x 2 root root 4096 Mar  6 15:39 ./
drwxr-xr-x 6 root root 4096 Mar  6 15:39 ../

How can I get profile data ?

I'm using oprofile 0.9.1-15.


Bernd

--
Bernd Lentes

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