Re: boot tracing

2013-07-23 Thread Ingo Molnar
orkflow would be pretty intuitive: > >>> > >>> - kernel developer sets boot flag: perf=boot,freq=1khz,size=16MB > >>What does perf=boot mean? I assume boot tracing. > >In this case it would mean boot profiling - i.e. a cycles hardware-PMU > >event co

Re: boot tracing

2013-07-23 Thread Ingo Molnar
What does perf=boot mean? I assume boot tracing. In this case it would mean boot profiling - i.e. a cycles hardware-PMU event collecting into a perf trace buffer as usual. Essentially a 'perf record -a' work-alike, just one that gets activated as early as practical, and which would allow

Re: boot tracing

2013-07-14 Thread Sam Ben
and the tooling support is ready enough yet for your purposes. Nope, not yet but we're getting there. Robert, Boris, the following workflow would be pretty intuitive: - kernel developer sets boot flag: perf=boot,freq=1khz,size=16MB What does perf=boot mean? I assume boot tracing

Re: boot tracing

2013-07-14 Thread Sam Ben
if the patches and the tooling support is ready enough yet for your purposes. Nope, not yet but we're getting there. Robert, Boris, the following workflow would be pretty intuitive: - kernel developer sets boot flag: perf=boot,freq=1khz,size=16MB What does perf=boot mean? I assume boot tracing

Re: boot tracing

2013-07-12 Thread Ingo Molnar
ling support is ready enough > > yet for your purposes. > > Nope, not yet but we're getting there. > > > Robert, Boris, the following workflow would be pretty intuitive: > > > > - kernel developer sets boot flag: perf=boot,freq=1khz,size=16MB > > Wh

boot tracing

2013-07-12 Thread Borislav Petkov
our purposes. Nope, not yet but we're getting there. > Robert, Boris, the following workflow would be pretty intuitive: > > - kernel developer sets boot flag: perf=boot,freq=1khz,size=16MB What does perf=boot mean? I assume boot tracing. If so, does it mean we want to enable *all* tr

boot tracing

2013-07-12 Thread Borislav Petkov
, not yet but we're getting there. Robert, Boris, the following workflow would be pretty intuitive: - kernel developer sets boot flag: perf=boot,freq=1khz,size=16MB What does perf=boot mean? I assume boot tracing. If so, does it mean we want to enable *all* tracepoints and collect whatever

Re: boot tracing

2013-07-12 Thread Ingo Molnar
is ready enough yet for your purposes. Nope, not yet but we're getting there. Robert, Boris, the following workflow would be pretty intuitive: - kernel developer sets boot flag: perf=boot,freq=1khz,size=16MB What does perf=boot mean? I assume boot tracing. In this case it would