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2026-04-15 - 13:55
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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 rackdslot3.osadl.org (updated Wed Apr 15, 2026 00:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
114512205171,23sleep30-21swapper/319:06:423
116902203170,22sleep10-21swapper/119:09:491
95742202171,20sleep20-21swapper/219:05:072
115352199167,22sleep00-21swapper/019:07:460
2818121530,7sleep31200099cyclictest00:10:283
2818121530,7sleep31200099cyclictest00:10:283
11997996524,6cyclictest9-21ksoftirqd/023:15:190
11997996424,6cyclictest9-21ksoftirqd/020:05:220
11997996424,6cyclictest9-21ksoftirqd/019:35:140
11997996325,6cyclictest9-21ksoftirqd/021:35:190
11997996323,6cyclictest9-21ksoftirqd/022:35:130
11997996323,6cyclictest9-21ksoftirqd/021:50:230
11997996322,6cyclictest9-21ksoftirqd/020:45:240
11997996223,6cyclictest9-21ksoftirqd/019:10:230
301722610,2sleep10-21swapper/100:15:241
11997996131,4cyclictest9-21ksoftirqd/022:50:000
11997996128,6cyclictest9-21ksoftirqd/019:55:270
11997996128,4cyclictest9-21ksoftirqd/021:55:240
11997996124,8cyclictest9-21ksoftirqd/000:00:250
11997996124,6cyclictest9-21ksoftirqd/023:55:180
11997996124,6cyclictest9-21ksoftirqd/019:50:210
11997996123,6cyclictest9-21ksoftirqd/020:55:170
11997996121,6cyclictest9-21ksoftirqd/021:25:240
11997996030,3cyclictest9-21ksoftirqd/023:30:010
11997996027,4cyclictest9-21ksoftirqd/020:40:170
11997996025,5cyclictest9-21ksoftirqd/020:30:140
11997996024,6cyclictest9-21ksoftirqd/000:35:200
11997996023,5cyclictest9-21ksoftirqd/022:25:180
4212590,3sleep21199999cyclictest19:50:242
11997995927,6cyclictest9-21ksoftirqd/021:15:190
11997995924,4cyclictest9-21ksoftirqd/020:10:160
11997995923,6cyclictest9-21ksoftirqd/019:15:250
11997995922,5cyclictest9-21ksoftirqd/000:15:230
254092580,2sleep30-21swapper/319:35:263
11997995826,4cyclictest9-21ksoftirqd/020:25:150
11997995822,5cyclictest9-21ksoftirqd/000:20:170
139391570,1ptp4l23351-21/usr/sbin/munin22:55:183
11997995727,8cyclictest9-21ksoftirqd/020:50:260
11997995726,5cyclictest9-21ksoftirqd/022:20:250
11997995726,4cyclictest9-21ksoftirqd/022:55:130
11997995723,6cyclictest9-21ksoftirqd/022:30:190
11997995623,6cyclictest9-21ksoftirqd/022:50:170
11997995623,5cyclictest9-21ksoftirqd/020:25:000
11997995623,3cyclictest9-21ksoftirqd/019:40:220
11997995623,10cyclictest9-21ksoftirqd/023:00:180
11997995618,4cyclictest9-21ksoftirqd/000:05:270
11997995522,6cyclictest9-21ksoftirqd/022:00:270
11997995521,5cyclictest9-21ksoftirqd/021:40:230
1199799546,7cyclictest9-21ksoftirqd/022:10:170
1199799545,6cyclictest9-21ksoftirqd/022:40:170
11997995425,5cyclictest9-21ksoftirqd/023:50:130
11997995421,5cyclictest9-21ksoftirqd/000:30:240
1199799533,6cyclictest9-21ksoftirqd/019:30:190
1199799532,7cyclictest9-21ksoftirqd/020:00:240
1199799532,7cyclictest12981-21apt-get20:20:000
11997995324,4cyclictest9-21ksoftirqd/019:45:200
11997995323,5cyclictest9-21ksoftirqd/023:20:190
11997995323,5cyclictest9-21ksoftirqd/023:20:190
11997995320,5cyclictest9-21ksoftirqd/022:05:210
11997995319,6cyclictest9-21ksoftirqd/023:10:230
1199799527,3cyclictest9-21ksoftirqd/021:00:120
1199799523,6cyclictest9-21ksoftirqd/023:45:250
1199799523,6cyclictest9-21ksoftirqd/021:10:220
1199799522,7cyclictest9-21ksoftirqd/021:20:260
11997995224,8cyclictest9-21ksoftirqd/023:25:130
11997995224,4cyclictest9-21ksoftirqd/023:40:150
11997995223,7cyclictest9-21ksoftirqd/021:35:010
1199799513,6cyclictest9-21ksoftirqd/022:15:170
1199799513,6cyclictest9-21ksoftirqd/021:45:230
1199799512,6cyclictest9-21ksoftirqd/023:05:220
1199799512,6cyclictest9-21ksoftirqd/019:20:240
11997995119,5cyclictest9-21ksoftirqd/000:25:190
11997995118,6cyclictest9-21ksoftirqd/023:35:200
11997995117,4cyclictest9-21ksoftirqd/019:25:560
1199799502,6cyclictest9-21ksoftirqd/020:35:260
1199799493,6cyclictest9-21ksoftirqd/021:05:220
1199799491,6cyclictest9-21ksoftirqd/000:10:150
1199799491,6cyclictest9-21ksoftirqd/000:10:150
155262480,2sleep10-21swapper/122:40:001
139391430,1ptp4l401ktimersoftd/322:05:213
139391430,0ptp4l401ktimersoftd/321:12:103
139391420,0ptp4l401ktimersoftd/322:40:243
139391420,0ptp4l401ktimersoftd/320:24:563
1394914132,4phc2sys0-21swapper/319:10:003
139391410,0ptp4l401ktimersoftd/321:50:023
139391410,0ptp4l401ktimersoftd/320:59:113
11999994035,3cyclictest890-21cron00:25:012
12000993932,4cyclictest41-21ksoftirqd/300:21:163
11999993933,4cyclictest33-21ksoftirqd/220:50:002
11998993934,3cyclictest25-21ksoftirqd/120:10:001
139391370,0ptp4l401ktimersoftd/322:30:213
11998993732,3cyclictest25-21ksoftirqd/121:40:171
11998993731,4cyclictest25-21ksoftirqd/123:45:581
12000993630,4cyclictest41-21ksoftirqd/321:45:543
11999993631,3cyclictest33-21ksoftirqd/221:05:122
11999993630,4cyclictest33-21ksoftirqd/222:34:392
11998993629,5cyclictest25-21ksoftirqd/121:13:511
11998993629,4cyclictest25-21ksoftirqd/123:15:141
11998993629,4cyclictest23619-21cron00:05:001
139391350,0ptp4l401ktimersoftd/319:43:593
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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