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2026-05-13 - 10:20
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackfslot7.osadl.org (updated Wed May 13, 2026 00:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2631475998041,19cyclictest873-21mta-sts-daemon22:17:014
263147299770,44cyclictest0-21swapper/122:05:201
2631475997517,39cyclictest1-21systemd20:55:014
2631475997315,39cyclictest2810670-21cut00:35:014
2631475997312,40cyclictest2746861-21taskset22:37:534
2631475997233,18cyclictest0-21swapper/420:30:354
2631475997031,19cyclictest0-21swapper/421:15:434
2631475997031,18cyclictest0-21swapper/400:21:234
2631475996931,18cyclictest0-21swapper/419:32:474
2631473996951,18cyclictest0-21swapper/221:45:162
263147599668,39cyclictest2749040-21ntpq22:40:214
2631475996119,40cyclictest0-21swapper/419:57:114
2631475996021,19cyclictest0-21swapper/421:20:274
2631475996021,19cyclictest0-21swapper/421:10:314
2631475995939,20cyclictest0-21swapper/420:15:554
2631475995819,19cyclictest0-21swapper/423:15:314
263147599580,39cyclictest2707533-21ntpq21:25:204
263147599580,19cyclictest790-21in:imuxsock20:10:014
2631475995618,19cyclictest2752866-21munin-run22:50:004
2631477995517,20cyclictest79-21ksoftirqd/623:55:166
2631475995414,19cyclictest0-21swapper/423:13:434
2631475995414,19cyclictest0-21swapper/419:45:274
2631475995315,19cyclictest2656732-21munin-run19:55:014
2631475995314,39cyclictest2773615-21missed_timers23:25:194
2631475995314,39cyclictest0-21swapper/421:55:534
2631475995313,19cyclictest0-21swapper/421:48:514
2631475995313,19cyclictest0-21swapper/419:23:154
2631475995313,0cyclictest0-21swapper/400:15:384
2631475995312,0cyclictest0-21swapper/422:27:474
263147599530,14cyclictest0-21swapper/400:25:164
2631477995214,19cyclictest0-21swapper/622:50:156
2631477995214,19cyclictest0-21swapper/619:45:156
2631475995233,19cyclictest1-21systemd20:40:014
2631475995214,38cyclictest0-21swapper/419:12:094
2631475995213,39cyclictest2646103-21smartctl19:35:144
2631475995213,39cyclictest0-21swapper/420:20:154
2631475995213,0cyclictest0-21swapper/400:11:354
2631475995212,0cyclictest0-21swapper/420:44:314
2631475995212,0cyclictest0-21swapper/420:44:314
2631475995112,39cyclictest0-21swapper/422:05:214
2631475995112,39cyclictest0-21swapper/421:44:574
2631475995112,39cyclictest0-21swapper/420:55:214
2631475995112,0cyclictest0-21swapper/400:01:314
2631475995111,19cyclictest0-21swapper/423:39:554
2631475995110,20cyclictest0-21swapper/423:45:314
2631472995113,19cyclictest0-21swapper/122:15:151
2631476995031,19cyclictest0-21swapper/520:50:165
2631476995012,19cyclictest0-21swapper/500:15:175
2631475995031,19cyclictest0-21swapper/420:12:244
2631475995011,39cyclictest0-21swapper/423:24:284
2631475995011,39cyclictest0-21swapper/422:10:054
2631475995011,39cyclictest0-21swapper/419:28:124
2631478994911,19cyclictest0-21swapper/723:40:167
2631475994931,18cyclictest0-21swapper/423:09:574
2631475994931,18cyclictest0-21swapper/421:07:214
2631475994931,18cyclictest0-21swapper/420:49:534
2631475994931,18cyclictest0-21swapper/420:49:534
2631475994910,39cyclictest0-21swapper/422:03:484
2631475994910,39cyclictest0-21swapper/421:00:324
2631473994912,37cyclictest0-21swapper/220:25:172
2631473994912,37cyclictest0-21swapper/220:25:172
263147899489,39cyclictest0-21swapper/720:35:157
2631477994830,18cyclictest0-21swapper/622:05:146
2631475994830,18cyclictest0-21swapper/423:40:154
2631475994830,18cyclictest0-21swapper/423:30:324
2631475994830,18cyclictest0-21swapper/423:03:454
2631475994829,19cyclictest2634631-21aten2.4_rfpower19:15:124
2631476994728,19cyclictest0-21swapper/520:30:155
263147599479,19cyclictest0-21swapper/419:40:134
2631475994729,18cyclictest0-21swapper/400:35:234
263147799468,19cyclictest0-21swapper/619:55:166
263147599468,19cyclictest2661103-21sendmail_mailtr20:00:214
263147599457,38cyclictest2711288-21latency_hist21:35:014
263147899445,39cyclictest0-21swapper/721:50:157
263147799435,19cyclictest0-21swapper/622:15:146
263147499425,18cyclictest0-21swapper/322:55:173
2631478994122,19cyclictest0-21swapper/700:30:187
263147799412,39cyclictest0-21swapper/623:45:156
263147499411,39cyclictest0-21swapper/321:35:163
263147299413,19cyclictest0-21swapper/100:00:181
263147699402,19cyclictest0-21swapper/521:55:165
2631475994022,18cyclictest0-21swapper/422:20:214
2631475994021,19cyclictest0-21swapper/423:55:494
2631475994021,19cyclictest0-21swapper/400:07:224
263147499402,19cyclictest0-21swapper/319:55:163
2631476993921,18cyclictest70-21ksoftirqd/521:18:355
263147699391,19cyclictest0-21swapper/522:30:145
263147699390,39cyclictest0-21swapper/500:00:195
263147599390,0cyclictest0-21swapper/422:57:144
263147299391,19cyclictest0-21swapper/100:20:161
263147299390,35cyclictest0-21swapper/120:30:151
2631476993820,18cyclictest2777274-21kworker/5:0+events00:36:495
2631476993820,18cyclictest0-21swapper/519:24:275
263147699380,38cyclictest0-21swapper/523:04:305
2631475993819,19cyclictest0-21swapper/422:31:594
2631475993819,19cyclictest0-21swapper/421:54:304
2631475993819,19cyclictest0-21swapper/420:29:334
2631475993819,19cyclictest0-21swapper/420:29:334
263147499380,19cyclictest0-21swapper/322:20:163
2631473993819,19cyclictest0-21swapper/220:05:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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