You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2023-06-01 - 14:30

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 20 highest latencies:
System rackbslot6.osadl.org (updated Thu Jun 01, 2023 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1170321820,5sleep02519199cyclictest21:43:170
1522911590,5ptp4l391rcuc/319:55:223
1772021580,4sleep32520799cyclictest00:33:223
152291830,2ptp4l391rcuc/300:12:513
152291790,2ptp4l391rcuc/300:58:283
152291790,2ptp4l391rcuc/300:18:303
152291790,2ptp4l391rcuc/300:18:303
152291790,1ptp4l391rcuc/300:43:303
152291780,1ptp4l391rcuc/323:33:273
152291770,2ptp4l391rcuc/322:57:503
152291770,2ptp4l391rcuc/300:03:363
152291770,2ptp4l391rcuc/300:02:393
152291770,1ptp4l391rcuc/300:39:463
152291760,2ptp4l391rcuc/322:48:333
152291760,2ptp4l391rcuc/321:58:283
152291760,1ptp4l391rcuc/322:25:353
152291760,1ptp4l391rcuc/322:08:343
152291760,1ptp4l391rcuc/320:23:113
152291750,2ptp4l391rcuc/320:33:253
152291750,2ptp4l391rcuc/320:33:253
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional