Dear all,
I have problems sampling with pfmon 3.9 on Cell (QS22).
Whenever i try to sample (regardless of the specific event) I get an
empty set of samples:
./pfmon --long-smpl-periods=5000 --short-smpl-period=20 --verbose
../tests/forktest
measuring at user privilege level ONLY
1 event set(s) defined
long sampling periods(val/mask/seed): 5000/0x0/0
short sampling periods(val/mask/seed): 20/0x0/0
using inst-hist sampling module
unavailable_pmcs=0xff000000
unavailable_pmds=0xffffff00
pmd setup for event set0:
[pmd0 set=0 smpl_pmds=0x0 reset_pmds=0x0]
[pmd0 set=0 ival=0xffffffffffffec78 long_rate=0xffffffffffffec78
short_rate=0xffffffffffffffec mask=0x0 seed=0 randomize=n]
max=4294967295 cur=4294967295
locked_mem_avail=3973906432 pfm_mem_avail=3973906432 mem_avail=3973906240
ncpus=0 max_entries=99347656 smpl_entries=2048 orig_smpl_entries=0 pgsz=65536
hdrsz=128 entrysz=40 slack=64
sampling buffer #entries=2048 size=82112, max_entry_size=40
vCPU0 -> pCPU0
vCPU1 -> pCPU1
vCPU2 -> pCPU2
vCPU3 -> pCPU3
exec-pattern=*
[3492] started task: ../tests/forktest
follow_exec=n follow_vfork=n follow_fork=n follow_pthread=n
[3492] 32-bit binary
[3492] monitoring /export/home/danieles/tmp/pfmon-3.9/tests/forktest...
[3492] activating monitoring
measurements started at Thu Sep 2 15:14:47 2010
creating 0 additional process(es)
1000 iterations
[3492] task exited
[3492] detached
sdesc chain to process:
[3492] (/export/home/danieles/tmp/pfmon-3.9/tests/forktest)
# results for [3492:3492<-[3487]]
(/export/home/danieles/tmp/pfmon-3.9/tests/forktest)
# total samples : 0
# total buffer overflows : 0
#
# event00
# counts %self %cum code addr
However, it seems like I should be able to use this feature.
If a run
pfmon -I
then I have all the sampling modules available:
detected host CPUs: Cell Broadband Engine.
detected pfmon PMU model: Cell/B.E PMU
detected libpfm PMU model: CELL
max counters/set: 8
supported pfmon PMU models: [Cell/B.E PMU]
supported sampling modules: [inst-hist] [detailed] [compact] [raw]
pfmlib version: 3.9
kernel perfmon version: 2.8
kernel clock resolution: 1ns (1000000000Hz)
host kernel architecture: ppc64
Any suggestion that could help me with this problem?
Thanks and best regards,
Daniele
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