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2026-08-08 - 23:28
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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 Aug 08, 2026 12:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2950099693,64cyclictest0-21swapper/209:50:292
2950099693,64cyclictest0-21swapper/209:50:292
29500996834,5cyclictest33-21ksoftirqd/210:20:232
134491680,3ptp4l0-21swapper/312:39:563
29500996734,5cyclictest33-21ksoftirqd/210:10:012
29500996733,6cyclictest33-21ksoftirqd/210:20:002
134491670,4ptp4l0-21swapper/312:33:393
134491670,4ptp4l0-21swapper/311:10:193
134491660,19ptp4l3744-21ls10:50:211
29500996432,5cyclictest33-21ksoftirqd/209:00:192
29500996329,7cyclictest33-21ksoftirqd/210:00:002
29500996325,8cyclictest33-21ksoftirqd/208:50:192
29500996127,5cyclictest33-21ksoftirqd/209:35:182
29500996125,5cyclictest33-21ksoftirqd/212:25:292
29500996030,5cyclictest33-21ksoftirqd/210:00:172
29500996029,8cyclictest33-21ksoftirqd/209:50:002
29500996028,5cyclictest33-21ksoftirqd/212:35:162
29500996028,5cyclictest33-21ksoftirqd/211:35:152
29500996024,6cyclictest33-21ksoftirqd/212:00:172
29500996024,6cyclictest33-21ksoftirqd/207:20:252
29500996024,5cyclictest33-21ksoftirqd/212:30:172
29500996023,5cyclictest33-21ksoftirqd/212:10:192
29500996023,5cyclictest33-21ksoftirqd/210:25:292
134491600,5ptp4l728-21tune2fs10:45:173
29500995930,8cyclictest33-21ksoftirqd/209:15:192
29500995929,5cyclictest33-21ksoftirqd/210:30:192
29498995919,8cyclictest9-21ksoftirqd/011:40:270
134491590,4ptp4l0-21swapper/207:45:122
134491590,4ptp4l0-21swapper/009:00:220
134491590,2ptp4l31770-21users09:30:293
29500995827,9cyclictest33-21ksoftirqd/209:40:122
29500995824,5cyclictest33-21ksoftirqd/209:30:192
134491580,3ptp4l0-21swapper/107:11:151
134491580,3ptp4l0-21swapper/007:14:070
134491570,3ptp4l0-21swapper/308:30:223
134491570,3ptp4l0-21swapper/009:35:190
134491570,12ptp4l0-21swapper/109:08:471
134491570,11ptp4l0-21swapper/007:05:080
29500995630,5cyclictest33-21ksoftirqd/208:00:012
2949899563,7cyclictest0-21swapper/008:45:240
134491560,4ptp4l0-21swapper/111:15:231
134491560,3ptp4l0-21swapper/307:54:483
134491560,3ptp4l0-21swapper/307:31:283
29500995529,9cyclictest33-21ksoftirqd/211:05:262
134491550,4ptp4l0-21swapper/311:29:263
2950099544,8cyclictest33-21ksoftirqd/208:55:222
2950099542,7cyclictest33-21ksoftirqd/208:20:002
29500995424,3cyclictest33-21ksoftirqd/208:47:402
29500995421,5cyclictest33-21ksoftirqd/211:45:202
2949899543,7cyclictest0-21swapper/009:45:160
134491540,5ptp4l0-21swapper/107:05:581
134491540,4ptp4l0-21swapper/310:38:513
134491540,4ptp4l0-21swapper/309:29:183
2950099535,7cyclictest19246-21fschecks_count11:25:162
2950099532,30cyclictest0-21swapper/211:01:072
29500995319,7cyclictest33-21ksoftirqd/207:55:142
2949899536,5cyclictest0-21swapper/008:10:130
2949899534,6cyclictest0-21swapper/009:10:190
134491530,4ptp4l0-21swapper/312:03:203
134491530,4ptp4l0-21swapper/309:24:193
134491530,4ptp4l0-21swapper/212:24:052
134491530,3ptp4l0-21swapper/308:18:133
134491530,3ptp4l0-21swapper/111:46:181
2950099525,4cyclictest2323-21llvmpipe-008:22:582
2950099524,3cyclictest33-21ksoftirqd/207:50:232
2950099522,7cyclictest0-21swapper/209:05:262
2950099522,11cyclictest0-21swapper/209:10:282
29500995218,7cyclictest33-21ksoftirqd/207:35:142
2949899525,6cyclictest0-21swapper/009:25:140
2949899524,6cyclictest0-21swapper/012:05:240
2949899524,6cyclictest0-21swapper/011:45:140
2949899524,6cyclictest0-21swapper/010:25:160
134491520,4ptp4l0-21swapper/210:44:032
134491520,4ptp4l0-21swapper/210:36:592
134491520,3ptp4l0-21swapper/311:20:193
134491520,11ptp4l0-21swapper/110:14:301
2950099516,9cyclictest33-21ksoftirqd/208:34:592
2950099516,8cyclictest33-21ksoftirqd/208:35:192
2950099515,5cyclictest33-21ksoftirqd/210:10:132
2950099515,2cyclictest121rcu_preempt09:25:562
2950099515,10cyclictest33-21ksoftirqd/207:10:222
2950099512,6cyclictest33-21ksoftirqd/210:55:302
2950099512,6cyclictest0-21swapper/209:20:122
29500995125,8cyclictest33-21ksoftirqd/211:20:142
2950099512,10cyclictest0-21swapper/211:30:302
2950099510,8cyclictest33-21ksoftirqd/212:05:222
2949899516,6cyclictest0-21swapper/009:40:270
2949899512,6cyclictest0-21swapper/011:35:140
2949899512,6cyclictest0-21swapper/008:40:240
2949899512,5cyclictest0-21swapper/007:55:230
134491510,4ptp4l0-21swapper/312:28:593
134491510,4ptp4l0-21swapper/309:06:493
134491510,4ptp4l0-21swapper/211:16:252
134491510,4ptp4l0-21swapper/109:35:311
134491510,3ptp4l0-21swapper/310:26:513
2950099506,6cyclictest33-21ksoftirqd/211:55:202
2950099505,8cyclictest33-21ksoftirqd/208:15:002
2950099502,6cyclictest0-21swapper/207:30:142
29500995023,6cyclictest33-21ksoftirqd/207:15:192
29500995022,9cyclictest33-21ksoftirqd/207:25:282
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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