From ff90b2974f841b92434cb46d89c39f08d01cc966 Mon Sep 17 00:00:00 2001 From: William Cohen Date: Wed, 28 Jan 2009 16:03:01 -0500 Subject: Add the polling timeout example and update the catalog. --- testsuite/systemtap.examples/index.txt | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'testsuite/systemtap.examples/index.txt') diff --git a/testsuite/systemtap.examples/index.txt b/testsuite/systemtap.examples/index.txt index fce068b8..f45f4c43 100644 --- a/testsuite/systemtap.examples/index.txt +++ b/testsuite/systemtap.examples/index.txt @@ -211,3 +211,15 @@ keywords: profiling user-space and kernel-space. +profiling/timeout.stp - Show Processes Doing Polling Operations +keywords: profiling + + The timeout.stp script is based on a blog entry + (http://udrepper.livejournal.com/19041.html) mentioning a need for a + tool to help developers find applications that are polling. The + timeout.stp script monitors systemcall used for polling and records + the systemcalls that timed out rather than returned because some + action occurred. The script updates the screen once a second with the + top twenty processes. + + -- cgit