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2025-12-11 - 06:13
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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 rackcslot4.osadl.org (updated Thu Dec 11, 2025 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32189592261190,55sleep10-21swapper/119:05:081
1258992430,76rtkit-daemon3398206-21cat00:10:160
32203702239196,27sleep00-21swapper/019:06:170
3220866992057,183cyclictest3302947-21netstat21:55:211
3220866992018,179cyclictest3306141-21fw_packets22:00:191
3220861992017,180cyclictest3417701-21apt-config00:38:540
3220866991967,176cyclictest3320909-21switchtime22:20:241
3220866991947,173cyclictest3398226-21df00:10:151
3220866991936,173cyclictest3417793-21apt-config00:38:561
32208619916457,83cyclictest3305983-21runrttasks22:00:170
32208669914558,72cyclictest3373372-21df23:35:151
334459321410,4sleep126-21ksoftirqd/122:55:011
322086199141100,29cyclictest3302968-21ssh21:55:210
32208619912838,77cyclictest3358930-21expr23:15:160
32208619912334,77cyclictest3316436-21expr22:15:140
3220861991143,98cyclictest3373337-21cstates23:35:140
3220866998175,4cyclictest3316981-21strings22:15:191
32939612740,4sleep10-21swapper/121:42:271
125899580,3rtkit-daemon1257-21rtkit-daemon21:12:010
125899570,3rtkit-daemon0-21swapper/000:22:580
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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