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2025-10-31 - 17:20
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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 Oct 31, 2025 12:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2617821510,6sleep30-21swapper/311:35:173
2847191720,8ptp4l0-21swapper/107:05:231
3133599622,29cyclictest0-21swapper/207:25:242
2847191620,5ptp4l0-21swapper/207:08:232
2847191620,5ptp4l0-21swapper/108:30:171
2847191620,4ptp4l26059-21ls09:15:200
2847191620,3ptp4l881-21python08:20:260
2847191610,16ptp4l28991-21apt-get07:05:173
31333996028,7cyclictest9-21ksoftirqd/008:50:260
2847191600,4ptp4l0-21swapper/308:59:573
2847191600,3ptp4l0-21swapper/210:00:382
31333995929,6cyclictest9-21ksoftirqd/010:25:230
31333995928,5cyclictest9-21ksoftirqd/008:10:000
2847191590,4ptp4l0-21swapper/110:10:121
2847191590,4ptp4l0-21swapper/110:10:121
2847191590,4ptp4l0-21swapper/008:35:250
31335995828,4cyclictest33-21ksoftirqd/208:15:212
2847191580,5ptp4l0-21swapper/111:10:231
2847191580,3ptp4l0-21swapper/109:29:591
3133699572,27cyclictest0-21swapper/312:24:403
3133599572,29cyclictest0-21swapper/207:24:532
3133599572,27cyclictest0-21swapper/207:50:222
31333995727,4cyclictest9-21ksoftirqd/009:35:170
2847191570,4ptp4l0-21swapper/012:22:300
2847191570,3ptp4l0-21swapper/008:45:160
3133699562,7cyclictest0-21swapper/310:27:003
31335995629,3cyclictest33-21ksoftirqd/211:35:182
31335995626,9cyclictest33-21ksoftirqd/208:55:162
31335995624,6cyclictest33-21ksoftirqd/208:50:162
31335995622,8cyclictest33-21ksoftirqd/211:00:012
3133599562,27cyclictest0-21swapper/209:41:542
31335995621,8cyclictest33-21ksoftirqd/211:09:042
31333995626,5cyclictest9-21ksoftirqd/009:40:260
31333995622,5cyclictest9-21ksoftirqd/008:25:150
31333995620,5cyclictest9-21ksoftirqd/007:55:170
31333995619,6cyclictest9-21ksoftirqd/008:30:140
2847191560,4ptp4l0-21swapper/108:04:541
2847191560,4ptp4l0-21swapper/107:30:221
2847191560,15ptp4l0-21swapper/111:30:151
3133699557,7cyclictest0-21swapper/307:15:143
3133599553,9cyclictest33-21ksoftirqd/209:40:002
31335995528,9cyclictest33-21ksoftirqd/207:35:182
31335995524,8cyclictest33-21ksoftirqd/207:45:222
31335995523,3cyclictest33-21ksoftirqd/207:30:222
3133599552,27cyclictest0-21swapper/210:09:532
3133599552,27cyclictest0-21swapper/210:09:532
3133599552,27cyclictest0-21swapper/207:15:182
31333995524,5cyclictest9-21ksoftirqd/009:30:200
31333995524,5cyclictest9-21ksoftirqd/009:25:190
31333995524,5cyclictest9-21ksoftirqd/007:52:240
31333995523,4cyclictest9-21ksoftirqd/010:40:180
31333995522,6cyclictest9-21ksoftirqd/011:25:010
31333995520,5cyclictest9-21ksoftirqd/010:15:150
2847191550,3ptp4l0-21swapper/211:52:182
2847191550,3ptp4l0-21swapper/108:42:171
2847191550,3ptp4l0-21swapper/108:05:241
3133699547,7cyclictest0-21swapper/311:08:473
3133599544,9cyclictest33-21ksoftirqd/210:50:292
31333995425,4cyclictest9-21ksoftirqd/011:50:270
31333995424,5cyclictest9-21ksoftirqd/008:00:160
31333995424,3cyclictest9-21ksoftirqd/007:30:010
31333995422,7cyclictest9-21ksoftirqd/012:25:170
31333995418,5cyclictest9-21ksoftirqd/008:10:140
2847191540,4ptp4l0-21swapper/009:59:050
2847191540,3ptp4l0-21swapper/012:39:330
2847191540,3ptp4l0-21swapper/010:50:480
2847191540,20ptp4l0-21swapper/012:18:510
31335995328,8cyclictest33-21ksoftirqd/208:25:222
31335995321,4cyclictest33-21ksoftirqd/211:20:182
31335995321,4cyclictest33-21ksoftirqd/211:20:182
31335995318,5cyclictest33-21ksoftirqd/212:05:232
31335995316,5cyclictest33-21ksoftirqd/212:10:262
31333995325,3cyclictest9-21ksoftirqd/010:05:310
31333995325,3cyclictest9-21ksoftirqd/010:05:310
31333995323,6cyclictest9-21ksoftirqd/007:40:010
31333995322,5cyclictest9-21ksoftirqd/011:35:170
31333995322,3cyclictest9-21ksoftirqd/007:40:160
2847191530,4ptp4l0-21swapper/010:13:340
2847191530,4ptp4l0-21swapper/010:13:340
3133699526,6cyclictest0-21swapper/308:10:283
3133699522,27cyclictest0-21swapper/311:25:203
31335995222,4cyclictest33-21ksoftirqd/211:15:272
31335995221,4cyclictest33-21ksoftirqd/211:10:272
31335995216,5cyclictest33-21ksoftirqd/210:35:272
31333995226,7cyclictest9-21ksoftirqd/012:30:250
31333995224,7cyclictest9-21ksoftirqd/007:20:270
31333995223,3cyclictest9-21ksoftirqd/008:45:000
31333995221,6cyclictest9-21ksoftirqd/007:30:280
31333995220,6cyclictest9-21ksoftirqd/012:00:220
2847191520,4ptp4l0-21swapper/011:16:310
3133699516,6cyclictest18943-21ntp_states07:50:243
3133699513,7cyclictest20570-21cron10:15:013
3133699513,7cyclictest20570-21cron10:15:013
3133599516,7cyclictest31955-21irqrtprio07:10:192
3133599516,7cyclictest31955-21irqrtprio07:10:192
31335995119,4cyclictest33-21ksoftirqd/211:40:162
31335995119,4cyclictest33-21ksoftirqd/209:55:182
31333995123,6cyclictest9-21ksoftirqd/010:35:210
31333995122,5cyclictest9-21ksoftirqd/009:15:000
31333995121,5cyclictest9-21ksoftirqd/010:56:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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