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2025-11-25 - 04:21
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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 Tue Nov 25, 2025 00:46:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1916088996729,19cyclictest16-21ksoftirqd/021:10:170
1916093996344,19cyclictest0-21swapper/522:32:085
1916093995738,0cyclictest691ktimers/523:21:385
1916091995213,39cyclictest0-21swapper/323:25:173
1916094995113,19cyclictest0-21swapper/623:30:186
1916091995133,18cyclictest0-21swapper/319:40:173
1916090995113,38cyclictest0-21swapper/222:05:162
1916090995113,19cyclictest0-21swapper/200:15:182
1916095995031,19cyclictest0-21swapper/700:30:207
1916095995012,19cyclictest0-21swapper/719:45:167
1916095994912,18cyclictest0-21swapper/722:10:167
191609599473,43cyclictest0-21swapper/722:50:157
191609099479,19cyclictest0-21swapper/219:25:172
1916093994625,21cyclictest1998240-21taskset21:31:545
191609099467,20cyclictest411rcuc/220:10:162
191609099467,20cyclictest411rcuc/220:10:162
191608899468,19cyclictest0-21swapper/021:05:160
191609399456,39cyclictest0-21swapper/523:27:485
191609399456,39cyclictest0-21swapper/523:14:005
191609399456,39cyclictest0-21swapper/523:00:565
191609399456,39cyclictest0-21swapper/521:27:325
191609399456,39cyclictest0-21swapper/521:17:325
191609399456,39cyclictest0-21swapper/521:05:485
191609399456,39cyclictest0-21swapper/520:00:445
191609399456,39cyclictest0-21swapper/519:58:065
191609399456,39cyclictest0-21swapper/519:35:305
191609399456,39cyclictest0-21swapper/500:28:415
191609399456,39cyclictest0-21swapper/500:18:015
191609399456,39cyclictest0-21swapper/500:12:475
191609399455,39cyclictest0-21swapper/519:15:145
191609099456,39cyclictest0-21swapper/200:35:172
191609099456,39cyclictest0-21swapper/200:35:172
191609099455,39cyclictest0-21swapper/222:15:182
191609399445,39cyclictest0-21swapper/523:45:175
191609399445,39cyclictest0-21swapper/522:52:485
191609399445,39cyclictest0-21swapper/520:25:165
191609399445,39cyclictest0-21swapper/519:44:165
191609399445,39cyclictest0-21swapper/500:35:575
191609399445,39cyclictest0-21swapper/500:35:575
191609399445,39cyclictest0-21swapper/500:33:515
191609399445,39cyclictest0-21swapper/500:20:295
191609399444,39cyclictest2045099-21smartctl22:55:165
191609399444,39cyclictest0-21swapper/521:45:105
1916093994425,19cyclictest691ktimers/523:31:045
1916093994425,19cyclictest1951689-21ld20:10:205
1916093994425,19cyclictest1951689-21ld20:10:205
1916088994424,19cyclictest0-21swapper/021:55:160
191609399435,38cyclictest0-21swapper/522:29:585
191609399435,19cyclictest2036471-21df22:40:145
191609399435,19cyclictest0-21swapper/519:30:365
191609399434,39cyclictest0-21swapper/523:51:115
191609399434,39cyclictest0-21swapper/523:07:065
191609399434,39cyclictest0-21swapper/521:43:225
191609399434,39cyclictest0-21swapper/521:00:265
191609399434,39cyclictest0-21swapper/520:54:545
191609399434,39cyclictest0-21swapper/520:48:565
191609399434,39cyclictest0-21swapper/520:44:425
191609399434,19cyclictest0-21swapper/520:55:425
191609399434,19cyclictest0-21swapper/519:10:365
191609399433,39cyclictest0-21swapper/523:57:475
191609399433,39cyclictest0-21swapper/522:09:105
191609399433,39cyclictest0-21swapper/520:38:505
191609399433,39cyclictest0-21swapper/520:20:105
191609399433,39cyclictest0-21swapper/520:20:105
1916093994324,19cyclictest691ktimers/522:16:285
191609599424,19cyclictest0-21swapper/722:15:177
191609399424,19cyclictest0-21swapper/500:00:215
191609399423,39cyclictest0-21swapper/523:42:525
191609399423,39cyclictest0-21swapper/523:16:225
191609399423,39cyclictest0-21swapper/521:56:425
191609399423,39cyclictest0-21swapper/521:51:445
191609399423,39cyclictest0-21swapper/521:39:225
191609399423,39cyclictest0-21swapper/520:15:305
191609399423,39cyclictest0-21swapper/519:50:305
191609399423,39cyclictest0-21swapper/519:45:525
191609399423,39cyclictest0-21swapper/500:09:075
191609399423,39cyclictest0-21swapper/500:09:075
191609199424,19cyclictest0-21swapper/323:45:153
191609099424,19cyclictest0-21swapper/219:35:192
191609599413,19cyclictest0-21swapper/723:15:187
191609399412,39cyclictest0-21swapper/521:14:145
191609399412,39cyclictest0-21swapper/519:27:315
191609399411,19cyclictest0-21swapper/520:30:245
191609299413,19cyclictest0-21swapper/419:20:164
191609399401,39cyclictest0-21swapper/522:38:505
191609399401,39cyclictest0-21swapper/521:21:425
191609099402,19cyclictest0-21swapper/221:05:162
191609099400,1cyclictest191rcu_preempt20:20:182
191609099400,1cyclictest191rcu_preempt20:20:182
191609599391,19cyclictest0-21swapper/723:00:187
191609299390,20cyclictest0-21swapper/420:25:184
1916091993921,18cyclictest0-21swapper/320:55:173
191609099391,19cyclictest0-21swapper/219:30:182
191609599380,19cyclictest0-21swapper/722:30:157
1916093993819,19cyclictest0-21swapper/523:35:185
191609399380,38cyclictest0-21swapper/522:47:445
191609399380,38cyclictest0-21swapper/522:02:405
191609399380,38cyclictest0-21swapper/520:05:185
191609199380,18cyclictest0-21swapper/320:25:163
191609099380,19cyclictest0-21swapper/200:10:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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