Re: lost some call trace for sleep function

2017-10-26 Thread Arnaldo Carvalho de Melo
Em Thu, Oct 26, 2017 at 06:24:56PM +0800, yuzhoujian escreveu: > Hi, all. > I find a strange problem. Perf cannot record call stack which contains sleep > functions. > The last function of the call trace is always "__GI___libc_nanosleep" for > each sample. > one of the sample for perf script is

Re: lost some call trace for sleep function

2017-10-26 Thread Arnaldo Carvalho de Melo
Em Thu, Oct 26, 2017 at 06:24:56PM +0800, yuzhoujian escreveu: > Hi, all. > I find a strange problem. Perf cannot record call stack which contains sleep > functions. > The last function of the call trace is always "__GI___libc_nanosleep" for > each sample. > one of the sample for perf script is

lost some call trace for sleep function

2017-10-26 Thread yuzhoujian
Hi, all. I find a strange problem. Perf cannot record call stack which contains sleep functions. The last function of the call trace is always "__GI___libc_nanosleep" for each sample. one of the sample for perf script is below: test_sleep 12275 185233.961287: 1 cycles:ppp:

lost some call trace for sleep function

2017-10-26 Thread yuzhoujian
Hi, all. I find a strange problem. Perf cannot record call stack which contains sleep functions. The last function of the call trace is always "__GI___libc_nanosleep" for each sample. one of the sample for perf script is below: test_sleep 12275 185233.961287: 1 cycles:ppp: