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2026-04-24 - 10:42
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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 Apr 24, 2026 00:46:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
785319996848,20cyclictest0-21swapper/120:10:161
78532299560,16cyclictest0-21swapper/400:20:194
78532599550,16cyclictest0-21swapper/719:50:167
785323995453,1cyclictest691ktimers/519:45:155
785323995233,19cyclictest0-21swapper/522:30:165
785318995214,19cyclictest0-21swapper/020:35:160
785325995012,19cyclictest0-21swapper/722:35:167
785318995011,39cyclictest0-21swapper/023:15:150
785323994911,19cyclictest0-21swapper/521:05:165
785321994910,39cyclictest0-21swapper/319:35:163
78532299477,39cyclictest0-21swapper/423:40:344
78532299477,39cyclictest0-21swapper/422:09:344
78532299477,39cyclictest0-21swapper/421:50:564
78532299477,39cyclictest0-21swapper/420:27:334
78532299477,39cyclictest0-21swapper/420:27:334
78532299477,39cyclictest0-21swapper/419:31:434
785322994727,19cyclictest1086-21runrttasks21:30:014
785322994726,20cyclictest896088-21kworker/u32:4+flush-8:023:59:554
78532199477,39cyclictest0-21swapper/319:25:153
78531999479,19cyclictest0-21swapper/123:40:161
78532299467,39cyclictest928409-21munin-run23:30:014
78532299467,39cyclictest889207-21ntpq22:15:224
78532299467,39cyclictest61-21ksoftirqd/420:50:164
78532299467,39cyclictest0-21swapper/423:22:114
78532299467,39cyclictest0-21swapper/423:09:594
78532299467,39cyclictest0-21swapper/421:47:294
78532299467,39cyclictest0-21swapper/421:34:004
78532299467,39cyclictest0-21swapper/420:48:414
78532299467,39cyclictest0-21swapper/420:48:404
78532299467,39cyclictest0-21swapper/420:30:214
78532299467,39cyclictest0-21swapper/420:10:104
78532299467,39cyclictest0-21swapper/420:09:154
78532299467,39cyclictest0-21swapper/419:19:424
78532299467,39cyclictest0-21swapper/400:29:384
78532299467,39cyclictest0-21swapper/400:19:014
78532299467,20cyclictest885293-21telnet22:10:134
78532299466,39cyclictest0-21swapper/419:22:374
78532299457,19cyclictest933030-21python323:35:234
78532299457,19cyclictest899860-21memory22:35:184
78532299456,39cyclictest0-21swapper/423:32:004
78532299456,39cyclictest0-21swapper/423:03:194
78532299456,39cyclictest0-21swapper/422:57:454
78532299456,39cyclictest0-21swapper/422:53:494
78532299456,39cyclictest0-21swapper/422:32:314
78532299456,39cyclictest0-21swapper/400:30:134
78532599447,18cyclictest0-21swapper/700:00:167
78532299445,39cyclictest0-21swapper/423:53:324
78532299445,39cyclictest0-21swapper/421:58:574
785322994444,0cyclictest0-21swapper/421:39:474
78532299443,40cyclictest948587-21basename00:05:154
785322994425,19cyclictest0-21swapper/420:40:114
78532299435,19cyclictest894655-21ntpq22:25:204
78532299434,39cyclictest0-21swapper/422:20:074
78532299434,39cyclictest0-21swapper/420:04:444
78532299434,39cyclictest0-21swapper/419:57:274
78532299434,39cyclictest0-21swapper/400:02:584
785322994343,0cyclictest0-21swapper/420:56:384
78532299432,41cyclictest950649-21/usr/sbin/munin00:10:154
78532199434,39cyclictest0-21swapper/320:00:143
78532299424,19cyclictest858632-21ntpq21:20:194
78532299424,19cyclictest0-21swapper/419:10:164
78532299423,39cyclictest236199-21snmpd20:17:174
78532299423,39cyclictest0-21swapper/419:46:044
78532299423,39cyclictest0-21swapper/419:43:394
78531999424,19cyclictest0-21swapper/122:05:151
78532399413,19cyclictest0-21swapper/521:10:175
78532299412,39cyclictest0-21swapper/421:03:154
78532299412,39cyclictest0-21swapper/420:37:354
78532299412,39cyclictest0-21swapper/419:39:204
78532299411,40cyclictest912456-21kworker/u32:2+events_unbound23:13:544
78531999411,39cyclictest0-21swapper/120:30:161
78532599401,38cyclictest0-21swapper/700:15:137
78532399402,19cyclictest0-21swapper/519:50:165
785322994040,0cyclictest0-21swapper/421:10:594
785322994037,2cyclictest826424-21latency_hist20:25:004
78532299403,19cyclictest776-21dbus-daemon21:10:004
785322994018,20cyclictest867327-21kworker/u32:0+events_unbound21:40:124
78532299401,39cyclictest0-21swapper/423:18:234
78532299401,39cyclictest0-21swapper/422:46:164
78532299400,39cyclictest1086-21runrttasks21:19:504
78532199390,20cyclictest0-21swapper/323:50:163
78532599380,19cyclictest0-21swapper/722:20:177
78532299380,38cyclictest0-21swapper/419:26:544
78532299380,37cyclictest258994-21kworker/u32:0+events_unbound19:52:194
78532299380,18cyclictest0-21swapper/423:46:334
78532199380,19cyclictest0-21swapper/323:15:153
78531899380,19cyclictest0-21swapper/023:55:410
785322993718,18cyclictest0-21swapper/422:40:174
78532199370,18cyclictest0-21swapper/300:15:133
785319993718,0cyclictest0-21swapper/122:25:151
78532599360,35cyclictest0-21swapper/723:35:167
78532599360,17cyclictest0-21swapper/723:05:167
78532399360,17cyclictest0-21swapper/522:50:155
78532299360,35cyclictest0-21swapper/422:03:414
785319993618,18cyclictest0-21swapper/122:45:161
78531899360,16cyclictest0-21swapper/000:15:430
78532599350,16cyclictest0-21swapper/720:35:167
78532599350,15cyclictest0-21swapper/721:15:177
78532599350,15cyclictest0-21swapper/720:40:147
78532399350,16cyclictest0-21swapper/523:35:155
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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