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2026-08-13 - 09:44
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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 100 highest latencies:
System rackdslot1.osadl.org (updated Thu Aug 13, 2026 00:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2470321710,6sleep22878099cyclictest23:40:012
2976421590,5sleep12877999cyclictest19:10:211
2976421590,5sleep12877999cyclictest19:10:211
3077821440,4sleep22878099cyclictest21:30:272
28781997232,5cyclictest41-21ksoftirqd/323:33:183
313362680,3sleep10-21swapper/120:25:151
28781996722,4cyclictest41-21ksoftirqd/321:05:173
28781996639,4cyclictest41-21ksoftirqd/323:38:083
134491660,23ptp4l648-21ntp_states23:55:251
28781996531,4cyclictest41-21ksoftirqd/322:20:223
28781996323,10cyclictest41-21ksoftirqd/323:50:123
28780996232,4cyclictest33-21ksoftirqd/219:22:172
28780996232,4cyclictest33-21ksoftirqd/200:24:262
28780996227,4cyclictest33-21ksoftirqd/220:30:192
28780996227,4cyclictest33-21ksoftirqd/220:30:192
28781996121,10cyclictest41-21ksoftirqd/321:51:323
28780996130,4cyclictest33-21ksoftirqd/220:15:152
28781996027,4cyclictest41-21ksoftirqd/321:15:133
28780996030,4cyclictest33-21ksoftirqd/219:46:192
28780996029,4cyclictest33-21ksoftirqd/223:18:332
134491600,5ptp4l0-21swapper/120:05:121
134491600,3ptp4l30678-21python21:30:251
134491600,3ptp4l0-21swapper/120:55:141
28781995916,9cyclictest41-21ksoftirqd/322:25:193
28780995926,4cyclictest33-21ksoftirqd/222:59:482
134491590,5ptp4l0-21swapper/120:30:201
134491590,5ptp4l0-21swapper/120:30:201
134491590,14ptp4l13768-21phc2sys-jitter19:45:240
28780995828,4cyclictest33-21ksoftirqd/221:15:192
28780995827,4cyclictest33-21ksoftirqd/221:38:092
28780995826,4cyclictest33-21ksoftirqd/200:15:292
134491580,5ptp4l0-21swapper/020:40:100
134491580,4ptp4l0-21swapper/322:59:503
134491580,4ptp4l0-21swapper/223:25:012
134491580,3ptp4l0-21swapper/123:50:151
134491580,15ptp4l23789-21ps22:25:251
28781995716,4cyclictest41-21ksoftirqd/320:20:163
28780995728,4cyclictest33-21ksoftirqd/223:06:222
28780995726,4cyclictest33-21ksoftirqd/221:45:262
28780995726,4cyclictest33-21ksoftirqd/200:31:442
28780995725,4cyclictest33-21ksoftirqd/221:09:052
134491570,4ptp4l0-21swapper/119:30:161
134491570,3ptp4l0-21swapper/023:50:120
134491570,3ptp4l0-21swapper/022:55:120
134491570,3ptp4l0-21swapper/019:10:260
134491570,3ptp4l0-21swapper/019:10:260
28780995618,4cyclictest33-21ksoftirqd/200:28:512
134491560,4ptp4l19929-21apt-get23:29:281
134491560,3ptp4l0-21swapper/220:05:012
134491560,3ptp4l0-21swapper/121:29:101
134491560,3ptp4l0-21swapper/023:15:220
134491560,20ptp4l25-21ksoftirqd/100:30:241
28781995519,8cyclictest41-21ksoftirqd/323:41:303
28781995519,10cyclictest41-21ksoftirqd/320:45:253
28780995527,4cyclictest33-21ksoftirqd/219:29:472
28780995525,4cyclictest33-21ksoftirqd/221:43:472
28780995524,4cyclictest33-21ksoftirqd/221:00:102
134491550,6ptp4l0-21swapper/219:06:222
134491550,4ptp4l0-21swapper/120:44:421
134491550,3ptp4l0-21swapper/122:05:251
134491550,24ptp4l0-21swapper/319:05:593
28781995421,7cyclictest41-21ksoftirqd/322:35:233
28781995412,8cyclictest41-21ksoftirqd/300:26:173
28780995422,3cyclictest33-21ksoftirqd/200:40:012
134491540,4ptp4l0-21swapper/020:37:590
134491540,3ptp4l0-21swapper/021:10:240
28781995331,9cyclictest41-21ksoftirqd/320:54:523
28780995324,4cyclictest33-21ksoftirqd/219:53:292
28780995323,4cyclictest33-21ksoftirqd/220:58:462
28780995323,4cyclictest33-21ksoftirqd/220:11:432
28780995322,4cyclictest33-21ksoftirqd/222:19:592
28780995322,3cyclictest33-21ksoftirqd/221:10:162
134491530,5ptp4l0-21swapper/122:42:341
134491530,3ptp4l3855-21latency_hist21:45:001
28781995213,8cyclictest41-21ksoftirqd/322:49:053
28780995222,4cyclictest33-21ksoftirqd/219:16:552
28780995222,3cyclictest33-21ksoftirqd/223:40:192
28780995215,5cyclictest33-21ksoftirqd/220:47:562
134491520,4ptp4l0-21swapper/020:56:320
134491520,1ptp4l0-21swapper/020:30:160
134491520,1ptp4l0-21swapper/020:30:160
28781995120,9cyclictest41-21ksoftirqd/321:30:213
28781995120,3cyclictest121rcu_preempt23:45:183
2878099512,5cyclictest0-21swapper/200:05:152
28780995118,3cyclictest33-21ksoftirqd/222:20:192
134491510,5ptp4l0-21swapper/023:49:580
134491510,4ptp4l0-21swapper/320:10:263
134491510,4ptp4l0-21swapper/121:22:391
134491510,4ptp4l0-21swapper/022:00:370
28781995031,7cyclictest41-21ksoftirqd/300:01:193
28781995017,4cyclictest41-21ksoftirqd/321:25:003
28780995021,4cyclictest33-21ksoftirqd/222:48:052
28780995019,4cyclictest33-21ksoftirqd/200:15:012
28780995019,4cyclictest33-21ksoftirqd/200:15:002
28780995018,3cyclictest33-21ksoftirqd/220:00:132
28780995017,6cyclictest33-21ksoftirqd/219:59:032
28780995015,7cyclictest33-21ksoftirqd/220:41:412
134491500,4ptp4l0-21swapper/021:44:080
134491500,3ptp4l0-21swapper/122:14:561
2878199497,2cyclictest41-21ksoftirqd/323:05:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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