From e6918187568dbd01842d8d1d2c808ce16a894239 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 21 Apr 2024 13:54:28 +0200 Subject: Adding upstream version 18.2.2. 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 000000000..066109823 --- /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