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2026-05-16 - 16:39
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackfslot7.osadl.org (updated Sat May 16, 2026 12:46:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
62434999126124,1cyclictest0-21swapper/708:10:147
624334997737,39cyclictest800163-21latency12:25:174
624334997517,39cyclictest786-21systemd-logind11:40:224
624334997211,39cyclictest738928-21ntpq10:35:194
624334997133,19cyclictest601ktimers/411:45:574
624334997132,0cyclictest803139-21ntpq12:30:194
624334997111,59cyclictest0-21swapper/411:03:454
62433499709,58cyclictest0-21swapper/408:09:534
624334996829,39cyclictest0-21swapper/412:08:054
62433499679,39cyclictest770165-21ntpq11:30:194
62433499678,19cyclictest0-21swapper/411:22:434
62433499668,0cyclictest0-21swapper/412:16:314
62433499668,0cyclictest0-21swapper/411:12:394
62433499667,0cyclictest0-21swapper/409:32:154
62433499656,19cyclictest0-21swapper/408:46:374
62433499656,19cyclictest0-21swapper/408:46:364
624334996525,39cyclictest0-21swapper/409:22:354
62433499646,19cyclictest0-21swapper/410:16:514
624334996424,39cyclictest0-21swapper/409:56:294
62433499635,0cyclictest0-21swapper/411:51:164
62433499634,19cyclictest0-21swapper/407:56:214
624334996324,39cyclictest0-21swapper/408:12:034
624334996324,39cyclictest0-21swapper/407:17:104
624334996324,19cyclictest0-21swapper/408:31:274
624334996323,39cyclictest0-21swapper/407:36:264
62433499624,39cyclictest362-21jbd2/sda2-808:40:074
624334996122,39cyclictest0-21swapper/408:52:224
624334995921,38cyclictest0-21swapper/409:14:344
624334995819,18cyclictest0-21swapper/409:15:174
62433499580,39cyclictest236199-21snmpd12:38:184
62433499580,39cyclictest236199-21snmpd12:38:174
62432099580,19cyclictest0-21swapper/011:45:150
624334995737,20cyclictest724431-21perl10:10:144
624334995718,1cyclictest637470-21switchtime07:30:254
624334995715,20cyclictest730572-21ntpq10:20:204
62433499570,57cyclictest0-21swapper/410:42:194
624349995638,18cyclictest0-21swapper/711:30:167
624344995637,19cyclictest0-21swapper/610:05:176
624334995518,18cyclictest734853-21munin-run10:30:014
624334995517,18cyclictest704972-21/usr/sbin/munin09:35:164
624334995419,15cyclictest0-21swapper/407:10:304
624334995416,0cyclictest736615-21find10:30:244
624334995415,0cyclictest797100-21smartctl12:20:154
624334995414,39cyclictest787446-21users12:00:224
624334995414,39cyclictest0-21swapper/408:37:524
624334995414,39cyclictest0-21swapper/408:37:524
624334995414,0cyclictest0-21swapper/409:50:194
624334995335,18cyclictest871-21mta-sts-daemon08:02:004
624334995332,21cyclictest0-21swapper/407:40:144
624334995319,34cyclictest0-21swapper/407:20:274
624334995315,19cyclictest751552-21munin-run11:00:024
624334995314,19cyclictest0-21swapper/409:46:084
624334995314,18cyclictest0-21swapper/409:40:214
624334995314,0cyclictest0-21swapper/410:45:204
624334995313,19cyclictest0-21swapper/412:12:164
624334995313,0cyclictest0-21swapper/410:53:434
624349995233,19cyclictest0-21swapper/709:15:167
624344995213,19cyclictest0-21swapper/612:25:176
624334995233,19cyclictest591rcuc/409:25:024
624334995233,19cyclictest0-21swapper/411:25:564
624334995233,19cyclictest0-21swapper/411:19:164
624334995232,20cyclictest0-21swapper/408:27:124
624334995213,39cyclictest0-21swapper/409:01:454
624334995213,0cyclictest0-21swapper/411:35:154
624334995213,0cyclictest0-21swapper/408:22:574
624334995213,0cyclictest0-21swapper/407:25:284
624334995212,0cyclictest0-21swapper/411:59:594
624334995212,0cyclictest0-21swapper/410:05:234
624332995214,19cyclictest0-21swapper/307:50:173
624330995214,19cyclictest0-21swapper/207:35:172
624334995132,19cyclictest0-21swapper/410:02:024
624334995132,19cyclictest0-21swapper/407:46:554
624334995112,39cyclictest0-21swapper/408:55:524
624334995112,0cyclictest0-21swapper/407:53:044
624334995111,19cyclictest0-21swapper/411:06:084
624334995111,19cyclictest0-21swapper/409:07:244
624334995111,0cyclictest0-21swapper/408:15:204
62433299519,19cyclictest0-21swapper/308:10:183
624332995113,19cyclictest0-21swapper/311:05:163
624322995032,18cyclictest0-21swapper/110:10:161
624344994930,19cyclictest781ktimers/609:00:176
624332994912,18cyclictest0-21swapper/308:30:153
624332994810,19cyclictest0-21swapper/310:55:163
624322994829,19cyclictest0-21swapper/111:45:151
624349994728,18cyclictest0-21swapper/708:35:177
624349994728,18cyclictest0-21swapper/708:35:177
62434999467,39cyclictest88-21ksoftirqd/711:15:167
62434499468,19cyclictest0-21swapper/607:20:166
62433099469,18cyclictest0-21swapper/208:00:172
62434099457,19cyclictest0-21swapper/510:45:165
62433299457,38cyclictest0-21swapper/309:30:153
62433299457,19cyclictest0-21swapper/308:15:173
624332994526,19cyclictest0-21swapper/310:10:163
62432299434,38cyclictest0-21swapper/108:15:171
624349994224,18cyclictest0-21swapper/710:25:157
62434499423,39cyclictest0-21swapper/612:20:166
62434099423,19cyclictest0-21swapper/511:25:165
62434999402,19cyclictest0-21swapper/709:45:167
62434099402,38cyclictest0-21swapper/509:40:165
62433099402,19cyclictest0-21swapper/210:55:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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