On 2/11/13 11:50 AM, Tim Chen wrote:
David,
When I am doing a profiling of kernel compile with 32 threads on a 4
socket westmere machine, I found that perf record terminated right away
for the version of perf in 3.7 kernel source tree.
There's no profile data recroded and the compile is running in
background.
$ make -j32 &
then
$ sudo /test/perf record -a -g -f sleep 5
sleep: Terminated
Race condition collecting the initial thread data:
$ su -c '/tmp/perf-3.7/perf record -a -g -f -o /tmp/perf.data -v sleep 5'
Password:
couldn't open /proc/22518/status
couldn't open /proc/22518/task
couldn't open /proc/22518/maps
sleep: Terminated
David
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