From: Andi Kleen <a...@linux.intel.com>
Signed-off-by: Andi Kleen <a...@linux.intel.com>
---
v2:
Even more tips.
v3:
Even more tips
---
tools/perf/Documentation/tips.txt | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/tools/perf/Documentation/tips.txt
b/tools/perf/Documentation/tips.txt
index 849599f39c5e..869965d629ce 100644
--- a/tools/perf/Documentation/tips.txt
+++ b/tools/perf/Documentation/tips.txt
@@ -15,6 +15,7 @@ To see callchains in a more compact form: perf report -g
folded
Show individual samples with: perf script
Limit to show entries above 5% only: perf report --percent-limit 5
Profiling branch (mis)predictions with: perf record -b / perf report
+To show assembler sample contexts use perf record -b / perf script -F
+brstackinsn --xed
Treat branches as callchains: perf report --branch-history
To count events in every 1000 msec: perf stat -I 1000
Print event counts in CSV format with: perf stat -x,
@@ -34,3 +35,9 @@ Show current config key-value pairs: perf config --list
Show user configuration overrides: perf config --user --list
To add Node.js USDT(User-Level Statically Defined Tracing): perf buildid-cache
--add `which node`
To report cacheline events from previous recording: perf c2c report
+To browse sample contexts use perf report --sample 10 and select in context
menu
+To separate samples by time use perf report --sort time,overhead,sym
+To set sample time separation other than 100ms with --sort time use
--time-quantum
+Add -I to perf report to sample register values visible in perf report context.
+To show IPC for sampling periods use perf record -e '{cycles,instructions}:S'
and then browse context
+To show context switches in perf report sample context add --switch-events to
perf record.
--
2.20.1
