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2025-12-26 - 18:04
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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 Fri Dec 26, 2025 12:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
284632770,4sleep00-21swapper/009:40:190
2255699739,62cyclictest6448-21kworker/1:111:21:291
22555996733,6cyclictest9-21ksoftirqd/008:30:200
22555996634,6cyclictest9-21ksoftirqd/010:20:160
22555996634,6cyclictest9-21ksoftirqd/010:20:160
22558996410,50cyclictest30169-21cstates08:35:153
22555996433,6cyclictest9-21ksoftirqd/007:20:190
45742630,5sleep32255899cyclictest10:00:013
22555996330,3cyclictest9-21ksoftirqd/009:00:170
22556996111,48cyclictest30354-21kworker/1:007:40:491
22555996128,6cyclictest9-21ksoftirqd/012:20:270
22555996126,6cyclictest9-21ksoftirqd/010:29:590
22555996126,6cyclictest9-21ksoftirqd/010:29:590
22555996031,6cyclictest9-21ksoftirqd/010:00:230
22555996026,3cyclictest9-21ksoftirqd/011:16:420
22555996026,3cyclictest9-21ksoftirqd/011:16:420
134491600,4ptp4l0-21swapper/110:35:191
22555995929,4cyclictest9-21ksoftirqd/008:37:080
22555995928,5cyclictest9-21ksoftirqd/008:05:130
22555995928,4cyclictest9-21ksoftirqd/011:27:050
22555995927,6cyclictest9-21ksoftirqd/008:55:260
22555995927,4cyclictest9-21ksoftirqd/009:10:010
22555995926,3cyclictest9-21ksoftirqd/012:25:280
22555995924,5cyclictest9-21ksoftirqd/010:30:140
22555995920,6cyclictest9-21ksoftirqd/009:20:220
134491590,4ptp4l0-21swapper/211:25:302
134491590,15ptp4l0-21swapper/210:30:582
22555995829,7cyclictest9-21ksoftirqd/007:59:290
22555995828,4cyclictest9-21ksoftirqd/007:16:490
22555995828,3cyclictest9-21ksoftirqd/009:05:190
22555995827,4cyclictest9-21ksoftirqd/009:35:000
22555995827,4cyclictest9-21ksoftirqd/008:44:500
22555995827,3cyclictest9-21ksoftirqd/007:31:300
22555995823,5cyclictest9-21ksoftirqd/010:55:210
22555995730,6cyclictest9-21ksoftirqd/009:25:160
22555995730,6cyclictest9-21ksoftirqd/009:25:160
22555995729,4cyclictest9-21ksoftirqd/008:11:340
22555995727,7cyclictest9-21ksoftirqd/007:35:250
22555995727,4cyclictest9-21ksoftirqd/010:15:280
22555995727,3cyclictest9-21ksoftirqd/009:15:190
22555995727,3cyclictest9-21ksoftirqd/008:46:160
22555995726,4cyclictest9-21ksoftirqd/012:12:230
22555995726,3cyclictest9-21ksoftirqd/008:20:100
22555995725,4cyclictest9-21ksoftirqd/010:41:220
22555995725,4cyclictest9-21ksoftirqd/008:27:330
134491570,5ptp4l0-21swapper/208:16:092
134491570,4ptp4l0-21swapper/210:25:012
134491570,4ptp4l0-21swapper/210:25:012
134491570,4ptp4l0-21swapper/011:54:390
134491570,4ptp4l0-21swapper/011:22:130
134491570,3ptp4l0-21swapper/211:51:332
22555995631,7cyclictest9-21ksoftirqd/011:04:590
22555995630,3cyclictest9-21ksoftirqd/012:31:570
22555995627,3cyclictest9-21ksoftirqd/008:00:210
22555995626,4cyclictest9-21ksoftirqd/007:26:090
22555995625,4cyclictest9-21ksoftirqd/008:18:390
22555995623,4cyclictest9-21ksoftirqd/011:40:280
22555995620,4cyclictest9-21ksoftirqd/011:05:110
134491560,4ptp4l0-21swapper/010:39:550
22555995528,4cyclictest9-21ksoftirqd/011:55:230
22555995518,5cyclictest9-21ksoftirqd/012:00:200
134491550,4ptp4l0-21swapper/309:34:193
134491550,4ptp4l0-21swapper/212:04:472
134491550,4ptp4l0-21swapper/207:46:402
134491550,4ptp4l0-21swapper/207:31:062
134491550,3ptp4l0-21swapper/111:50:241
22555995426,7cyclictest9-21ksoftirqd/007:50:270
22555995426,6cyclictest9-21ksoftirqd/009:51:300
22555995425,3cyclictest9-21ksoftirqd/008:52:000
22555995421,5cyclictest9-21ksoftirqd/010:10:280
134491540,5ptp4l0-21swapper/212:38:062
134491540,4ptp4l0-21swapper/211:38:552
134491540,4ptp4l0-21swapper/209:03:492
134491540,3ptp4l0-21swapper/110:49:561
134491540,13ptp4l0-21swapper/212:32:452
2255899531,3cyclictest1441-21date08:40:293
22555995325,3cyclictest9-21ksoftirqd/011:45:250
22555995321,5cyclictest9-21ksoftirqd/007:10:180
22555995320,4cyclictest9-21ksoftirqd/010:45:190
134491530,5ptp4l0-21swapper/210:42:222
134491530,5ptp4l0-21swapper/107:06:261
134491530,4ptp4l0-21swapper/212:13:212
134491530,4ptp4l0-21swapper/208:57:462
134491530,4ptp4l0-21swapper/107:57:011
134491520,4ptp4l0-21swapper/210:36:112
134491520,4ptp4l0-21swapper/208:11:192
134491520,3ptp4l0-21swapper/009:55:420
22556995110,39cyclictest15294-21kworker/1:209:10:491
22555995135,3cyclictest9-21ksoftirqd/010:50:240
22555995123,6cyclictest9-21ksoftirqd/007:40:170
134491510,3ptp4l0-21swapper/010:07:310
134491510,11ptp4l0-21swapper/212:20:122
134491500,3ptp4l0-21swapper/007:49:240
134491500,10ptp4l20528-21df_inode07:05:163
2255699494,43cyclictest0-21swapper/109:52:491
2255599492,2cyclictest9-21ksoftirqd/011:14:590
2255599487,2cyclictest9-21ksoftirqd/011:35:000
2255599485,3cyclictest9-21ksoftirqd/009:35:170
2255599484,2cyclictest9-21ksoftirqd/012:15:270
2255599484,2cyclictest9-21ksoftirqd/012:15:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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