The extrace from littlewhywhat

// 'POSIX timer 1'
 prev_comm=DispSync prev_pid=1081 prev_prio=97 prev_state=S ==> next_comm=POSIX timer 1 next_pid=1085 next_prio=112

// AsyncTask #18
prev_comm=.android.dialer prev_pid=2045 prev_prio=110 prev_state=S ==> next_comm=AsyncTask #18 next_pid=2682 next_prio=130

// 'POSIX timer 1' 
comm=POSIX timer 0 pid=1083 prio=112 success=1 target_cpu=000

build emulator

find out possible other features from ftrace

Function names are not working

Forgot to add function names from arguments to kernelTraceSystem in EnvironmentBuilder

Create usage example

create and describe procedure to make some meaningful output

Implement ExtraceApp

use domain model

setup cmake build and test

Implement MachineTrace

Signal doesn't stop MemorySampleAction

Signal only stops inner loop but doesn't affect outer.

Create usage example

emulator #./data/extrace
usage: ./data/extrace [options]
options include:
  -a app_package  enable app-level tracing for a comma
                  separated list of package names
  -b N            use a trace buffer size of N KB
  -c              trace into a circular buffer
  -d aname,...    trace the listed android categories
  -e kname,...    trace the listed kernel categories
  -f filename     use the categories written in a file as space-separated
                    values in a line
  -p N            period of memory measurement
  -m N            number of periods to pass
  -pids N,...     PIDs to take memory measurement of
  -minCpu N       minimal CPU usage that should trace record have to display to user
  -minUss N       minimal Uss that should a trace record have to be displayed to user
  -n              ignore signals
  -s N            sleep for N seconds before tracing [default 0]
  -t N            trace for N seconds [default 5]
  -z              compress the trace dump
  --async_start   start circular trace and return immediatly
  --async_dump    dump the current contents of circular trace buffer
  --async_stop    stop tracing and dump the current contents of circular
                    trace buffer
  --stream        stream trace to outstream as it enters the trace buffer
                    Note: this can take significant CPU time, and is best
                    used for measuring things that are not affected by
                    CPU performance, like pagecache usage.
  --list_categories
                  list the available tracing categories
 -o filename      write the trace to the specified file instead
                    of outstream.
 --acore          add core services.

Application names options is not working

Forgot to add application names from arguments to androidTraceSystem in EnvironmentBuilder.

find out why nothing from some categories is traced

atrace with all android options doesn't trace anything (core_service is not even supported #24):

atrace gfx input view webview wm am sm audio video camera hal app res dalvik rs bionic power pm ss database network

ProcessRecords with different causes are returned as equal

Adjust operator == with Cause comparance

Events doesn't apply to all processes

for example, command:

./data/extrace -a com.android.dialer -e sched -t 10 -p 1000000 -m 1000 -pids 2045,1343 -o /data/out 2>/dev/null > /data/after_out

creates output like this:

---------------------------------------------------------------------------------------
 | 2045|onBindViewHolder: 6
---------------------------------------------------------------------------------------
 |  1343 |   0 % |  783228K |  125480K |   72107K |   63060K |  3928317006 | SLEEPING |
---------------------------------------------------------------------------------------
 | 2045|RV CreateView
---------------------------------------------------------------------------------------
 |  1343 |   0 % |  783228K |  125480K |   72107K |   63060K |  3928319100 | SLEEPING |
---------------------------------------------------------------------------------------
 | 2045|RV OnBindView
---------------------------------------------------------------------------------------
 |  1343 |   0 % |  783228K |  125480K |   72107K |   63060K |  3928319106 | SLEEPING |
---------------------------------------------------------------------------------------
 | 2045|onBindViewHolder: 7
---------------------------------------------------------------------------------------
 |  1343 |   0 % |  783228K |  125560K |   72189K |   63144K |  3928337821 | SLEEPING |
---------------------------------------------------------------------------------------
 | MemTrace
--------------------------------------------------------------------------------------- 
 |  1343 |   0 % |  783228K |  125560K |   72189K |   63144K |  3928342621 |    AWAKE |
---------------------------------------------------------------------------------------
 | SchedWakeup
---------------------------------------------------------------------------------------

but these events 2045|onBindViewHolder - doesn't appear in list of events for pid 2045.

first onBindView is 3928044195 on line 11931. first record for 2045 is 3922135822 on line 96.

in fact no onBindView is applied to process 2045...
after_out.txt
init_out.txt

setup ethernet connection on startup

use information from these links:
https://itsfoss.com/how-to-find-what-devices-are-connected-to-network-in-ubuntu/
https://raspberrypi.stackexchange.com/questions/43560/raspberry-pi-3-eth0-wrongfully-named-enx
android-rpi/device_brcm_rpi3#71
https://raspberrypi.stackexchange.com/questions/57464/ssh-connection-refused-via-ethernet-cable
https://serverfault.com/questions/475717/iptables-block-incoming-on-eth1-and-allow-all-from-eth0
https://serverfault.com/questions/244767/enable-iptables-on-one-interface

list commands to run on host and on remote, find a way to run them at startup - for example, put in init.rc

add domain model

fix Android.mk

Android.mk miss some source files

littlewhywhat / extrace Goto Github PK

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