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2026-06-02 - 04:58
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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 50 highest latencies:
System rackdslot3.osadl.org (updated Tue Jun 02, 2026 00:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491207174,22phc2sys0-21swapper/319:06:023
20362205170,23sleep20-21swapper/219:09:422
18482203170,22sleep10-21swapper/119:07:231
17592203168,23sleep00-21swapper/019:06:180
302021710,6sleep2235499cyclictest21:25:002
1276921710,5sleep2235499cyclictest00:00:132
139491167129,13phc2sys0-21swapper/319:10:003
1932621410,6sleep1235399cyclictest20:50:171
104852740,5sleep2235499cyclictest20:30:242
235499619,3cyclictest30539-21apt23:30:102
139391600,1ptp4l401ktimersoftd/322:55:403
140092590,3sleep20-21swapper/221:45:222
320992570,1sleep332102-21grep22:25:143
139391550,1ptp4l401ktimersoftd/321:18:533
139391550,1ptp4l401ktimersoftd/300:34:253
207252530,2sleep220729-21irqrtprio22:00:192
221482510,3sleep30-21swapper/323:10:243
139391490,1ptp4l401ktimersoftd/321:37:233
139391490,1ptp4l401ktimersoftd/321:37:223
2354994514,29cyclictest28302-21kworker/2:121:10:332
139391440,0ptp4l401ktimersoftd/319:36:063
139391430,0ptp4l401ktimersoftd/322:45:263
139391430,0ptp4l401ktimersoftd/322:06:023
235499427,3cyclictest11982unixbench_multi22:25:272
2355994033,4cyclictest19717-21cron00:15:003
235499406,31cyclictest0-21swapper/200:00:012
139391400,0ptp4l401ktimersoftd/300:25:263
2355993829,7cyclictest41-21ksoftirqd/322:12:253
235499383,32cyclictest24498-21latency_hist00:25:012
2354993832,4cyclictest33-21ksoftirqd/223:25:012
2353993732,3cyclictest25-21ksoftirqd/100:15:121
2353993731,4cyclictest25-21ksoftirqd/121:42:081
2353993731,4cyclictest25-21ksoftirqd/100:05:181
2353993730,5cyclictest25-21ksoftirqd/100:34:011
2352993731,4cyclictest9-21ksoftirqd/022:50:000
2354993630,4cyclictest33-21ksoftirqd/221:25:042
2354993630,4cyclictest33-21ksoftirqd/219:13:262
2354993629,5cyclictest33-21ksoftirqd/220:20:382
2354993612,22cyclictest11401-21sed19:25:262
2353993630,4cyclictest25-21ksoftirqd/121:50:581
2353993630,4cyclictest25-21ksoftirqd/121:07:221
2353993630,4cyclictest25-21ksoftirqd/120:13:101
2353993630,4cyclictest25-21ksoftirqd/119:48:151
2355993529,4cyclictest41-21ksoftirqd/321:47:233
2354993529,4cyclictest33-21ksoftirqd/223:49:502
2354993529,4cyclictest33-21ksoftirqd/200:30:382
2354993527,5cyclictest33-21ksoftirqd/200:15:132
2354993513,19cyclictest29003-21/usr/sbin/munin20:05:152
2354993510,22cyclictest27608-21grep22:15:162
2353993530,3cyclictest25-21ksoftirqd/119:16:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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