From 483eb2f56657e8e7f419ab1a4fab8dce9ade8609 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 20:24:20 +0200 Subject: Adding upstream version 14.2.21. Signed-off-by: Daniel Baumann --- src/seastar/debug/task-latency.stap | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100755 src/seastar/debug/task-latency.stap (limited to 'src/seastar/debug') diff --git a/src/seastar/debug/task-latency.stap b/src/seastar/debug/task-latency.stap new file mode 100755 index 00000000..06610982 --- /dev/null +++ b/src/seastar/debug/task-latency.stap @@ -0,0 +1,24 @@ +#!/usr/bin/stap + +# usage: task_latency.stap process_name latency_threshold_ms + +global start_time + +probe process(@1).mark("reactor_run_tasks_single_start") { + start_time[tid()] = gettimeofday_us() +} + +probe process(@1).mark("reactor_run_tasks_single_end") { + delete start_time[tid()] +} + +probe timer.profile { + if ([tid()] in start_time) { + now = gettimeofday_us() + start = start_time[tid()] + if ((now - start) > $2 * 1000) { + printf("detected tasks running for >%sms\n", @2) + print_usyms(ubacktrace()) + } + } +} -- cgit v1.2.3