You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-09-17 - 14:33
Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rackdslot3.osadl.org (updated Wed Sep 17, 2025 00:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
70922207174,22sleep20-21swapper/219:08:322
69692205171,22sleep30-21swapper/319:06:563
70592203169,23sleep00-21swapper/019:08:060
71852201168,22sleep10-21swapper/119:09:441
10812640,4sleep2321ktimersoftd/220:05:002
220292630,3sleep30-21swapper/323:05:133
297462580,1sleep20-21swapper/223:20:222
136991530,1ptp4l401ktimersoftd/322:56:473
7498995220,5cyclictest25-21ksoftirqd/119:25:001
7498995020,7cyclictest25-21ksoftirqd/120:20:001
7498994820,7cyclictest25-21ksoftirqd/100:35:231
7498994814,7cyclictest25-21ksoftirqd/122:25:001
59298480,2rtkit-daemon591-21rtkit-daemon21:13:230
136991480,1ptp4l401ktimersoftd/323:52:193
7498994515,4cyclictest25-21ksoftirqd/122:50:241
7498994511,4cyclictest25-21ksoftirqd/100:25:001
136991450,1ptp4l401ktimersoftd/300:12:303
7498994414,4cyclictest25-21ksoftirqd/120:25:301
749899437,9cyclictest25-21ksoftirqd/120:05:001
7498994314,4cyclictest25-21ksoftirqd/119:25:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional