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2026-04-25 - 13:21
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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 Sat Apr 25, 2026 00:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2325821520,5sleep00-21swapper/020:40:150
2447921410,6sleep31364399cyclictest23:00:233
1364199741,29cyclictest25070-21latency_hist20:45:011
13641997410,22cyclictest22046-21timerwakeupswit20:35:261
134491730,10ptp4l12148-21irqstats19:05:191
1364199720,29cyclictest25510-21seq00:12:001
1364199700,26cyclictest7193-21tune2fs21:15:161
1364199692,28cyclictest0-21swapper/122:00:241
1364199690,29cyclictest18404-21seq23:57:001
1364199684,23cyclictest31783-21phc2sys00:25:251
1364199681,24cyclictest30533-21cut19:45:191
1364199680,27cyclictest20251-21seq20:34:541
1364199679,19cyclictest18126-21cat20:30:001
1364199670,25cyclictest8647-21timerandwakeup22:25:281
1364199670,22cyclictest25221-21egrep19:35:121
1364199660,26cyclictest9713-21sed23:40:151
13562660,7sleep11364199cyclictest00:30:181
1364199650,28cyclictest6725-21chrt22:22:181
1364199640,24cyclictest26605-21irqrtprio00:15:201
1364199640,24cyclictest26605-21irqrtprio00:15:191
13640996433,8cyclictest9-21ksoftirqd/023:20:180
13640996431,5cyclictest9-21ksoftirqd/000:05:270
1364199631,59cyclictest7599-21meminfo20:05:201
1364199631,59cyclictest20273-21users21:40:291
1364199631,58cyclictest4653-21df_inode20:00:141
1364199630,33cyclictest29538-21awk23:10:251
1364199630,28cyclictest11389-21taskset22:32:291
13640996334,5cyclictest9-21ksoftirqd/000:00:200
13640996330,4cyclictest9-21ksoftirqd/019:20:270
1364199621,28cyclictest4454-21seq22:17:561
1364199620,28cyclictest6782-21taskset23:33:531
1364199620,28cyclictest4223-21chrt23:25:371
13640996229,6cyclictest9-21ksoftirqd/022:05:270
13640996224,6cyclictest9-21ksoftirqd/022:55:170
13640996224,6cyclictest9-21ksoftirqd/021:44:590
1364199614,22cyclictest17748-21timerandwakeup21:35:271
1364199610,29cyclictest32186-21chrt22:07:461
1364199610,27cyclictest27355-21chrt23:05:351
13640996130,4cyclictest9-21ksoftirqd/022:33:560
13640996129,5cyclictest9-21ksoftirqd/019:35:180
13640996129,3cyclictest9-21ksoftirqd/019:50:000
13640996128,7cyclictest9-21ksoftirqd/000:40:010
1364199601,27cyclictest16300-21seq23:54:241
1364199600,29cyclictest20285-21taskset19:24:281
1364199600,28cyclictest15422-21taskset19:11:171
1364199600,25cyclictest24285-21cat23:00:201
1364199600,25cyclictest11204-21chrt21:24:491
13640996030,4cyclictest9-21ksoftirqd/020:23:290
13640996028,5cyclictest9-21ksoftirqd/023:45:280
13640996027,4cyclictest9-21ksoftirqd/020:25:190
13640996025,8cyclictest9-21ksoftirqd/023:40:190
13640996025,4cyclictest9-21ksoftirqd/021:05:230
13640996021,5cyclictest9-21ksoftirqd/021:00:180
134491600,4ptp4l0-21swapper/119:40:151
1364199591,29cyclictest4032-21seq21:07:151
1364199590,29cyclictest24688-21seq19:32:031
1364199590,28cyclictest27001-21taskset20:47:501
1364199590,24cyclictest21881-21mailstats19:25:251
13640995931,3cyclictest9-21ksoftirqd/020:10:250
13640995929,6cyclictest9-21ksoftirqd/023:10:250
13640995929,3cyclictest9-21ksoftirqd/022:45:070
13640995928,4cyclictest9-21ksoftirqd/020:07:340
13640995927,5cyclictest9-21ksoftirqd/022:15:270
13640995927,3cyclictest9-21ksoftirqd/000:12:370
13640995925,5cyclictest9-21ksoftirqd/022:35:190
134491590,4ptp4l0-21swapper/021:15:130
317092580,5sleep233-21ksoftirqd/200:25:232
1364199583,19cyclictest0-21swapper/120:00:001
1364199581,29cyclictest6218-21seq21:10:521
1364199580,33cyclictest16116-21chrt22:43:521
1364199580,30cyclictest7096-21seq23:35:021
1364199580,26cyclictest30282-21taskset00:23:541
13640995829,8cyclictest9-21ksoftirqd/020:40:010
13640995828,3cyclictest9-21ksoftirqd/023:38:420
13640995827,5cyclictest9-21ksoftirqd/020:15:270
13640995825,6cyclictest9-21ksoftirqd/019:30:130
134491580,3ptp4l0-21swapper/022:41:270
1364199577,46cyclictest22713-21unixbench_multi21:45:291
1364199571,28cyclictest22884-21taskset22:57:221
1364199570,28cyclictest25292-21seq21:53:001
13640995726,3cyclictest9-21ksoftirqd/022:52:050
13640995725,4cyclictest9-21ksoftirqd/019:55:000
13640995721,6cyclictest9-21ksoftirqd/023:05:120
134491570,4ptp4l0-21swapper/321:45:263
134491570,4ptp4l0-21swapper/023:25:190
134491570,3ptp4l0-21swapper/321:50:203
1364199562,26cyclictest0-21swapper/122:53:311
1364199560,32cyclictest1257-21ssh21:00:251
1364199560,29cyclictest20826-21seq00:03:181
1364199560,28cyclictest2055-21seq23:22:511
1364199560,28cyclictest12992-21taskset20:15:351
1364199560,27cyclictest22925-21chrt00:05:471
13640995626,5cyclictest9-21ksoftirqd/021:45:260
13640995626,4cyclictest9-21ksoftirqd/022:03:430
13640995623,5cyclictest9-21ksoftirqd/023:55:290
13640995621,5cyclictest9-21ksoftirqd/019:15:010
13640995619,5cyclictest9-21ksoftirqd/021:30:010
134491560,6ptp4l0-21swapper/319:08:513
134491560,4ptp4l0-21swapper/300:12:053
1364199551,30cyclictest4813-21seq00:38:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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