From a64a253794ac64cb40befee54db53bde17dd0d49 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 7 Nov 2018 13:19:29 +0100 Subject: New upstream version 1.11.0+dfsg Signed-off-by: Daniel Baumann --- collectors/idlejitter.plugin/README.md | 13 +++++++++++++ 1 file changed, 13 insertions(+) create mode 100644 collectors/idlejitter.plugin/README.md (limited to 'collectors/idlejitter.plugin/README.md') diff --git a/collectors/idlejitter.plugin/README.md b/collectors/idlejitter.plugin/README.md new file mode 100644 index 000000000..3c2080536 --- /dev/null +++ b/collectors/idlejitter.plugin/README.md @@ -0,0 +1,13 @@ +## idlejitter.plugin + +It works like this: + +A thread is spawn that requests to sleep for 20000 microseconds (20ms). +When the system wakes it up, it measures how many microseconds have passed. +The difference between the requested and the actual duration of the sleep, is the idle jitter. +This is done at most 50 times per second, to ensure we have a good average. + +This number is useful: + + 1. in real-time environments, when the CPU jitter can affect the quality of the service (like VoIP media gateways). + 2. in cloud infrastructure, at can pause the VM or container for a small duration to perform operations at the host. -- cgit v1.2.3