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2026-07-26 - 09:39
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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 Sun Jul 26, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1279321430,5sleep02277099cyclictest00:35:180
134491870,5ptp4l0-21swapper/023:20:240
22772996813,52cyclictest22621-21unixbench_singl22:35:292
46582610,4sleep10-21swapper/119:40:291
134491610,4ptp4l0-21swapper/020:10:180
134491600,3ptp4l0-21swapper/222:50:142
134491590,4ptp4l0-21swapper/322:20:153
134491590,3ptp4l0-21swapper/221:18:442
134491580,4ptp4l0-21swapper/322:25:273
134491580,4ptp4l0-21swapper/023:10:240
134491580,4ptp4l0-21swapper/023:05:210
134491580,3ptp4l0-21swapper/223:47:192
134491580,3ptp4l0-21swapper/221:05:232
22772995721,4cyclictest33-21ksoftirqd/220:10:562
134491570,3ptp4l0-21swapper/219:15:002
134491570,3ptp4l0-21swapper/120:53:411
134491570,17ptp4l0-21swapper/020:54:120
22772995624,6cyclictest33-21ksoftirqd/220:35:242
22772995622,6cyclictest33-21ksoftirqd/200:25:242
134491560,4ptp4l0-21swapper/321:24:473
134491560,2ptp4l0-21swapper/319:16:493
22772995526,3cyclictest33-21ksoftirqd/222:05:182
22772995524,3cyclictest33-21ksoftirqd/223:36:242
22772995523,4cyclictest33-21ksoftirqd/200:07:112
22772995522,6cyclictest33-21ksoftirqd/221:55:232
22772995522,3cyclictest33-21ksoftirqd/200:20:002
134491550,5ptp4l0-21swapper/222:34:342
134491550,4ptp4l25654-21wc22:45:002
134491550,3ptp4l0-21swapper/220:50:102
22772995422,4cyclictest33-21ksoftirqd/200:33:522
22772995420,4cyclictest33-21ksoftirqd/222:20:542
22772995416,6cyclictest33-21ksoftirqd/221:10:232
134491540,4ptp4l0-21swapper/322:15:263
134491540,4ptp4l0-21swapper/320:51:003
134491540,4ptp4l0-21swapper/119:07:191
134491540,3ptp4l0-21swapper/323:19:133
22772995325,3cyclictest33-21ksoftirqd/223:33:512
22772995323,4cyclictest33-21ksoftirqd/219:38:352
22772995322,3cyclictest33-21ksoftirqd/222:14:492
22772995321,6cyclictest33-21ksoftirqd/223:55:192
22772995319,4cyclictest33-21ksoftirqd/223:05:202
22772995313,12cyclictest33-21ksoftirqd/220:47:332
2277199533,2cyclictest0-21swapper/122:36:071
134491530,4ptp4l16151-21diskstats20:05:172
134491530,3ptp4l0-21swapper/321:01:313
22772995225,7cyclictest33-21ksoftirqd/200:39:532
22772995223,4cyclictest33-21ksoftirqd/220:03:192
22772995221,7cyclictest33-21ksoftirqd/223:10:192
22772995221,5cyclictest33-21ksoftirqd/219:55:232
22772995221,4cyclictest33-21ksoftirqd/222:57:532
22772995221,4cyclictest33-21ksoftirqd/221:30:252
22772995220,5cyclictest33-21ksoftirqd/220:25:252
134491520,3ptp4l0-21swapper/322:33:133
2277299514,4cyclictest121rcu_preempt00:02:562
22772995121,8cyclictest33-21ksoftirqd/221:00:262
22772995120,5cyclictest33-21ksoftirqd/222:29:012
22772995120,5cyclictest33-21ksoftirqd/220:43:432
22772995119,5cyclictest33-21ksoftirqd/221:52:292
22772995119,5cyclictest33-21ksoftirqd/221:20:182
22772995117,6cyclictest33-21ksoftirqd/223:15:202
134491510,4ptp4l0-21swapper/321:55:363
134491510,4ptp4l0-21swapper/320:58:593
134491510,4ptp4l0-21swapper/023:25:030
22772995025,5cyclictest33-21ksoftirqd/219:41:062
22772995015,5cyclictest33-21ksoftirqd/221:42:302
134491500,4ptp4l0-21swapper/323:22:163
134491500,4ptp4l0-21swapper/319:24:223
134491500,4ptp4l0-21swapper/023:01:260
134491500,2ptp4l0-21swapper/320:02:333
22772994917,3cyclictest33-21ksoftirqd/223:20:282
22772994912,8cyclictest33-21ksoftirqd/219:45:022
22772994912,8cyclictest33-21ksoftirqd/200:20:252
134491490,5ptp4l0-21swapper/019:06:140
134491490,4ptp4l0-21swapper/322:00:123
134491490,4ptp4l0-21swapper/320:29:423
134491490,4ptp4l0-21swapper/319:44:453
134491490,4ptp4l0-21swapper/223:40:362
134491490,3ptp4l0-21swapper/323:48:073
134491490,3ptp4l0-21swapper/322:53:363
134491490,3ptp4l0-21swapper/300:20:483
134491490,16ptp4l0-21swapper/100:10:101
134491490,12ptp4l0-21swapper/322:43:133
22772994837,9cyclictest33-21ksoftirqd/222:20:002
22772994821,6cyclictest33-21ksoftirqd/200:10:002
22772994819,6cyclictest33-21ksoftirqd/221:35:202
22772994819,4cyclictest33-21ksoftirqd/219:25:162
22772994817,5cyclictest33-21ksoftirqd/219:50:182
22772994810,7cyclictest33-21ksoftirqd/222:48:402
134491480,4ptp4l0-21swapper/322:10:473
134491480,4ptp4l0-21swapper/320:49:243
134491480,4ptp4l0-21swapper/320:21:293
134491480,4ptp4l0-21swapper/319:52:173
134491480,4ptp4l0-21swapper/300:26:053
134491480,4ptp4l0-21swapper/219:17:252
134491480,3ptp4l0-21swapper/323:38:073
134491480,3ptp4l0-21swapper/221:45:492
22772994721,6cyclictest33-21ksoftirqd/220:19:072
134491470,4ptp4l0-21swapper/319:13:323
134491470,4ptp4l0-21swapper/300:15:463
134491470,3ptp4l0-21swapper/223:00:262
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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