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2025-11-21 - 10:52
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackfslot7.osadl.org (updated Fri Nov 21, 2025 00:46:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
962964998930,59cyclictest0-21swapper/319:43:443
962962998951,38cyclictest0-21swapper/121:30:201
962964998830,57cyclictest1071440-21cut22:20:183
962964998627,39cyclictest1029145-21cat21:05:173
962964997355,18cyclictest871-21mta-sts-daemon20:40:503
962964997314,59cyclictest0-21swapper/320:30:183
962964997252,20cyclictest511ktimers/323:00:143
962964997111,40cyclictest1000579-21df20:15:163
96296499699,40cyclictest1136361-21latency_hist00:15:023
96296499668,39cyclictest1087620-21latency_hist22:50:013
96296299624,19cyclictest0-21swapper/122:00:171
96296499613,39cyclictest1-21systemd19:30:023
96296499600,40cyclictest1122872-21needreboot23:50:203
962964995920,39cyclictest0-21swapper/323:59:203
962964995819,39cyclictest0-21swapper/319:39:243
962964995738,19cyclictest874-21mta-sts-daemon22:07:303
962964995718,39cyclictest1006533-21if_eno420:25:183
962964995638,18cyclictest877-21mta-sts-daemon00:04:343
962964995636,19cyclictest999920-21munin-run20:15:013
962964995617,20cyclictest1146464-21grep00:30:243
962964995537,18cyclictest873-21mta-sts-daemon21:49:423
962964995417,18cyclictest1017126-21/usr/sbin/munin20:45:153
96296199540,54cyclictest0-21swapper/022:50:170
962964995319,34cyclictest0-21swapper/322:15:103
962964995318,35cyclictest0-21swapper/320:05:223
962964995315,19cyclictest1088-21runrttasks19:57:323
962964995315,19cyclictest1035170-21ntpq21:15:213
962964995314,39cyclictest1142450-21tr00:25:143
962964995314,19cyclictest0-21swapper/322:27:503
962964995314,19cyclictest0-21swapper/320:00:433
962964995234,18cyclictest876-21mta-sts-daemon20:56:053
962964995233,19cyclictest501rcuc/321:05:023
962964995233,19cyclictest0-21swapper/321:25:133
962964995213,38cyclictest1039247-21cut21:25:023
962962995233,19cyclictest0-21swapper/123:55:181
962962995214,19cyclictest0-21swapper/123:05:231
962964995133,18cyclictest0-21swapper/320:20:153
962964995133,18cyclictest0-21swapper/300:20:243
962964995132,19cyclictest0-21swapper/322:50:243
962964995132,19cyclictest0-21swapper/319:10:243
962964995132,0cyclictest0-21swapper/321:55:023
962964995111,39cyclictest0-21swapper/319:20:123
962962995113,19cyclictest0-21swapper/122:10:221
962970995011,38cyclictest0-21swapper/721:45:177
962964995032,18cyclictest0-21swapper/300:38:363
962964995031,19cyclictest0-21swapper/322:36:523
962964995031,19cyclictest0-21swapper/321:30:163
962964995031,0cyclictest0-21swapper/323:30:343
962964994931,18cyclictest0-21swapper/323:10:263
962964994930,19cyclictest0-21swapper/323:35:303
962964994930,19cyclictest0-21swapper/322:11:373
962964994930,19cyclictest0-21swapper/319:30:203
962964994930,19cyclictest0-21swapper/319:15:043
962964994930,19cyclictest0-21swapper/300:07:503
962964994911,19cyclictest1092657-21sshd22:57:333
962963994911,19cyclictest0-21swapper/223:15:162
96296499489,39cyclictest1107724-21aten2.4-expect23:25:143
962964994829,19cyclictest0-21swapper/323:15:243
962964994829,19cyclictest0-21swapper/323:07:323
962964994829,19cyclictest0-21swapper/321:52:363
962964994829,19cyclictest0-21swapper/319:47:223
962964994829,0cyclictest0-21swapper/321:40:043
96296499479,19cyclictest1137874-21ntpq00:15:243
962964994729,18cyclictest0-21swapper/323:47:043
962964994729,18cyclictest0-21swapper/319:50:133
962964994728,19cyclictest0-21swapper/322:30:263
962964994728,19cyclictest0-21swapper/321:37:253
962964994728,0cyclictest0-21swapper/322:00:103
962964994628,18cyclictest0-21swapper/321:13:583
962964994627,19cyclictest0-21swapper/323:42:223
962964994627,19cyclictest0-21swapper/323:20:543
96296299467,19cyclictest0-21swapper/121:15:171
96297099457,19cyclictest0-21swapper/721:35:177
96296699457,19cyclictest0-21swapper/522:40:175
962964994527,18cyclictest1011309-21kworker/u32:1+writeback20:50:063
962964994526,19cyclictest0-21swapper/322:40:043
962964994526,19cyclictest0-21swapper/320:35:583
96296299446,19cyclictest0-21swapper/122:55:181
96296199446,19cyclictest0-21swapper/023:10:160
96297099435,19cyclictest0-21swapper/722:10:227
962962994223,0cyclictest783-21mta-sts-daemon23:45:141
96296599402,19cyclictest0-21swapper/420:10:204
96296699390,15cyclictest0-21swapper/522:45:175
962962993922,0cyclictest0-21swapper/119:50:161
962962993920,0cyclictest0-21swapper/121:40:171
96296299390,20cyclictest0-21swapper/121:10:161
962966993838,0cyclictest0-21swapper/520:10:205
962966993814,19cyclictest0-21swapper/500:05:155
96296699380,19cyclictest0-21swapper/520:00:185
962963993838,0cyclictest0-21swapper/220:39:122
962963993838,0cyclictest0-21swapper/219:19:122
96296399382,36cyclictest90650irq/67-eno6-TxRx-520:57:562
96296399381,37cyclictest90650irq/67-eno6-TxRx-522:49:362
96296399381,37cyclictest0-21swapper/219:46:002
96296299380,38cyclictest0-21swapper/122:35:171
96297099370,18cyclictest0-21swapper/720:10:207
962963993737,0cyclictest0-21swapper/223:31:152
962963993737,0cyclictest0-21swapper/222:01:202
962963993737,0cyclictest0-21swapper/220:53:162
962963993737,0cyclictest0-21swapper/219:40:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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