diff options
| author | Manuel Traut <manut@mecka.net> | 2013-07-10 22:16:56 +0200 |
|---|---|---|
| committer | Manuel Traut <manut@mecka.net> | 2013-07-10 22:16:56 +0200 |
| commit | c142dc8a6770eedfcbba7100a537a505b128ab98 (patch) | |
| tree | 8f757bbfeb9ea371e38c293777c46df8dffd80d8 | |
| parent | ea021d44dc2ccd154bb9ff284787029a71049d21 (diff) | |
kernel-tracing: remove sched_switch tracer
Signed-off-by: Manuel Traut <manut@mecka.net>
| -rw-r--r-- | kernel-devel/kernel-tracing/pres_kernel-tracing_en.tex | 48 |
1 files changed, 19 insertions, 29 deletions
diff --git a/kernel-devel/kernel-tracing/pres_kernel-tracing_en.tex b/kernel-devel/kernel-tracing/pres_kernel-tracing_en.tex index d73a10f..f185e58 100644 --- a/kernel-devel/kernel-tracing/pres_kernel-tracing_en.tex +++ b/kernel-devel/kernel-tracing/pres_kernel-tracing_en.tex @@ -7,7 +7,7 @@ \frametitle{Kerneltracing: Overview} \begin{itemize} \item DebugFS interface -\item Different tracers: function, function\_graph, sched\_switch, ... +\item Different tracers: function, function\_graph, wakeup, wakeup\_rt, \dots \item Custom trace events \item Graphical frontend (kernelshark) \end{itemize} @@ -62,18 +62,24 @@ wnck-2022 [003] 5766.659918: kfree <-skb \frametitle{Tracer: function / latency\_format} \begin{verbatim} $ echo 1 > options/latency_format -$ less trace -# _------=> CPU# -# / _-----=> irqs-off -# | / _----=> need-resched -# || / _---=> hardirq/softirq -# ||| / _--=> preempt-depth -# |||| /_--=> lock-depth -# |||||/ delay -# cmd pid |||||| time | caller -# \ / |||||| \ | / -wnck-app-2022 3..... 1237702us : skb_relea -wnck-app-2022 3..... 1237703us : sock_wfre +# tracer: function +# +# function latency trace v1.1.5 on 3.9.4-x1-00124-g0bfd8ff +# -------------------------------------------------------------------- +# latency: 0 us, #204955/25306195, CPU#0 | (M:desktop VP:0, KP:0, SP:0 HP:0 #P:4) +# ----------------- +# | task: -0 (uid:0 nice:0 policy:0 rt_prio:0) +# ----------------- +# +# _------=> CPU# +# / _-----=> irqs-off +# | / _----=> need-resched +# || / _---=> hardirq/softirq +# ||| / _--=> preempt-depth +# |||| / delay +# cmd pid ||||| time | caller +# \ / ||||| \ | / +terminol-11964 1.... 11639243us : ep_read_events_proc <-ep_scan_ready_list.isra.8 \end{verbatim} \end{frame} @@ -95,22 +101,6 @@ $ less trace \end{frame} \begin{frame}[fragile] -\frametitle{Tracer: sched\_switch} -\tiny -\begin{verbatim} -# tracer: sched_switch -# -# TASK-PID CPU# TIMESTAMP FUNCTION -# | | | | | - bash-4328 [003] 78.553966: 4328:120:S + [003] 4328:120:S bash - bash-4328 [003] 78.553979: 4328:120:S ==> [003] 0:120:R <idle> -<idle>-0 [003] 78.553986: 0:120:R + [003] 13:120:R ksoftirqd/3 -<idle>-0 [003] 78.553988: 0:120:R ==> [003] 13:120:R ksoftirqd/3 - -\end{verbatim} -\end{frame} - -\begin{frame}[fragile] \frametitle{Tracer: wakeup\_rt} \tiny \begin{verbatim} |