You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2022-05-29 - 13:19

x86 Intel Atom E3845 @1915 MHz, Linux 4.19.37-rt20 (Profile)

Latency plot of system in rack #b, slot #6
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 10 highest latencies:
System rackbslot6.osadl.org (updated Sun May 29, 2022 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2286421750,5sleep01667699cyclictest23:32:080
2435321740,5sleep31669199cyclictest01:10:373
1167721500,4sleep21668699cyclictest02:01:312
911911180,8ptp4l23222-21kworker/3:221:16:043
911911180,8ptp4l23222-21kworker/3:221:16:043
91191810,1ptp4l401ktimersoftd/301:02:473
63272720,4sleep11668199cyclictest01:56:001
91191670,2ptp4l401ktimersoftd/300:23:513
91191650,2ptp4l401ktimersoftd/323:57:413
91191640,1ptp4l401ktimersoftd/322:40:473
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional