diff --git a/.vim/vimwiki/run_perf.wiki b/.vim/vimwiki/run_perf.wiki
index e1416bc..4ebb74d 100644
--- a/.vim/vimwiki/run_perf.wiki
+++ b/.vim/vimwiki/run_perf.wiki
@@ -6,6 +6,83 @@
  ./report_html.py -i perf.data
  
 === Perf camera server === 
- ./run_simpleperf_on_device.py record -g -p $( adb shell ps | grep camera.provider | awk '{print $2}')  --duration 5 -o perf_test.data
+
+./run_simpleperf_on_device.py record -g -p $( adb shell ps | grep camera.provider | awk '{print $2}')  --duration 5 -o perf_test.data
 adb pull /data/local/tmp/perf_test.data .
 ./report_html.py -i perf_test.data
+
+
+=== Call Graph ===
+# https://android.googlesource.com/platform/prebuilts/simpleperf/+/refs/heads/ndk-r13-release/README.md
+./run_simpleperf_on_device.py record -g -p $( adb shell ps | grep camera.provider | awk '{print $2}')  --duration 5 -o perf_test.data  -g --symfs .
+# Or, but do not seems better
+./run_simpleperf_on_device.py record -g -p $( adb shell ps | grep camera.provider | awk '{print $2}')  --duration 5 -o perf_test.data  -g --symfs . --call-graph fp
+adb shell  /data/local/tmp/simpleperf report -n -g --symfs . -i /data/local/tmp/perf_test.data
+adb shell /data/local/tmp/simpleperf report -n -g --symfs . -i /data/local/tmp/perf_test.data >perf.report && python3 report.py perf.report
+
+
+== With perfecto ==
+https://devblogs.microsoft.com/performance-diagnostics/perfetto-tooling-for-analyzing-android-linux-and-chromium-browser-performance-microsoft-performance-tools-linux-android/
+https://perfetto.dev/docs/reference/trace-config-proto#PerfEventConfig
+
+
+
+#!/usr/bin/env bash
+# see https://devblogs.microsoft.com/performance-diagnostics/perfetto-tooling-for-analyzing-android-linux-and-chromium-browser-performance-microsoft-performance-tools-linux-android/
+adb shell perfetto \
+  -c - --txt \
+  -o /data/misc/perfetto-traces/trace \
+<<EOF
+
+buffers: {
+    size_kb: 63488
+    fill_policy: DISCARD
+}
+buffers: {
+    size_kb: 2048
+    fill_policy: DISCARD
+}
+data_sources: {
+    config {
+        name: "linux.process_stats"
+        target_buffer: 1
+        process_stats_config {
+            scan_all_processes_on_start: true
+        }
+    }
+}
+data_sources: {
+    config {
+        name: "linux.ftrace"
+        ftrace_config {
+            ftrace_events: "sched/sched_switch"
+            ftrace_events: "power/suspend_resume"
+            ftrace_events: "sched/sched_wakeup"
+            ftrace_events: "sched/sched_wakeup_new"
+            ftrace_events: "sched/sched_waking"
+            ftrace_events: "sched/sched_process_exit"
+            ftrace_events: "sched/sched_process_free"
+            ftrace_events: "task/task_newtask"
+            ftrace_events: "task/task_rename"
+        }
+    }
+}
+data_sources: {
+    config {
+        name: "linux.perf"
+        perf_event_config {
+        timebase {
+            frequency: 1000
+        }
+        callstack_sampling {
+            kernel_frames: true
+        }
+        target_cmdline: "vendor.qti.camera.provider@2.7-service_64"
+    }
+    }
+}
+duration_ms: 8000
+
+EOF
+
+adb pull /data/misc/perfetto-traces/trace