You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-12-05 - 09:10
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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack3slot6.osadl.org (updated Fri Dec 05, 2025 00:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9080211124,41sleep10-21swapper/119:05:241
229102850,14sleep122911-21unixbench_multi19:40:351
10089998430,18cyclictest6902-21apt-get20:30:210
10089998023,10cyclictest21973-21aten2.4-expect00:15:170
224282790,5sleep022430-21wc22:45:200
835727829,37sleep00-21swapper/019:05:120
10095997852,19cyclictest443-21systemd-logind22:55:141
10089997843,23cyclictest14-21ksoftirqd/020:10:360
10089997439,23cyclictest14-21ksoftirqd/000:10:210
10095997145,10cyclictest21969-21ntpq21:10:291
1008999696,11cyclictest0-21swapper/023:05:160
1008999687,51cyclictest8633-21apt-get20:35:130
10095996742,10cyclictest26-21ksoftirqd/100:10:331
10089996732,12cyclictest7505-21/usr/sbin/munin23:35:260
10089996731,29cyclictest14-21ksoftirqd/020:55:280
1008999658,42cyclictest0-21swapper/000:25:160
10095996314,16cyclictest254-21systemd-journal19:47:231
10089996337,20cyclictest14-21ksoftirqd/023:55:390
10089996336,15cyclictest14-21ksoftirqd/021:07:380
1009599628,49cyclictest36-21kcompactd023:05:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional