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2026-08-25 - 14:51
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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 rackcslot8.osadl.org (updated Tue Aug 25, 2026 00:49:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
176392291284,6sleep130-21swapper/1319:05:115
176392291284,6sleep130-21swapper/1319:05:115
237359927779,2cyclictest151rcu_preempt21:49:3814
202842247237,7sleep200-21swapper/2019:05:1813
202842247237,7sleep200-21swapper/2019:05:1813
3273911780,169ptp4l0-21swapper/119:08:041
3273911780,169ptp4l0-21swapper/119:08:031
237409917123,103cyclictest0-21swapper/2223:29:3415
237409917123,103cyclictest0-21swapper/2223:29:3415
237739917020,114cyclictest151rcu_preempt20:35:4824
237409916323,86cyclictest0-21swapper/2222:15:1815
237519916022,68cyclictest0-21swapper/2521:27:4718
236709915417,114cyclictest0-21swapper/800:32:4630
236709915417,114cyclictest0-21swapper/800:32:4630
23702991500,86cyclictest0-21swapper/1523:39:377
23702991500,86cyclictest0-21swapper/1523:39:367
23702991480,86cyclictest0-21swapper/1523:51:237
23702991480,86cyclictest0-21swapper/1523:51:237
23702991480,84cyclictest0-21swapper/1522:35:297
237409914720,93cyclictest0-21swapper/2200:05:2415
237409914720,93cyclictest0-21swapper/2200:05:2415
237699914524,66cyclictest151rcu_preempt21:00:2322
23769991450,86cyclictest0-21swapper/2900:15:3922
23769991450,86cyclictest0-21swapper/2900:15:3922
23702991451,85cyclictest0-21swapper/1522:43:307
23702991450,85cyclictest0-21swapper/1523:14:307
23702991450,84cyclictest0-21swapper/1500:11:097
23702991450,84cyclictest0-21swapper/1500:11:097
23702991440,84cyclictest0-21swapper/1523:26:167
23702991440,84cyclictest0-21swapper/1523:26:167
23702991440,82cyclictest0-21swapper/1500:29:197
23702991440,82cyclictest0-21swapper/1500:29:197
236709914421,85cyclictest0-21swapper/800:27:3730
236709914421,85cyclictest0-21swapper/800:27:3730
23670991440,86cyclictest0-21swapper/822:05:1430
23769991410,84cyclictest0-21swapper/2921:50:1822
237409914123,66cyclictest0-21swapper/2221:10:3815
23702991410,83cyclictest0-21swapper/1521:15:187
236709914122,117cyclictest0-21swapper/821:17:2130
23636991410,84cyclictest0-21swapper/021:31:090
23702991390,82cyclictest0-21swapper/1500:20:157
23702991390,82cyclictest0-21swapper/1500:20:157
23702991390,81cyclictest0-21swapper/1523:21:277
237029913829,71cyclictest0-21swapper/1521:23:527
237029913827,68cyclictest0-21swapper/1521:40:257
23702991380,77cyclictest0-21swapper/1522:22:077
237029913732,64cyclictest0-21swapper/1519:47:097
237029913727,66cyclictest0-21swapper/1500:31:287
237029913727,66cyclictest0-21swapper/1500:31:287
237029913724,66cyclictest0-21swapper/1521:26:337
236369913651,65cyclictest0-21swapper/023:49:210
236369913651,65cyclictest0-21swapper/023:49:210
236369913649,58cyclictest0-21swapper/021:15:250
236369913645,58cyclictest0-21swapper/023:18:020
236369913645,58cyclictest0-21swapper/023:18:010
236369913628,92cyclictest0-21swapper/023:30:210
236369913628,92cyclictest0-21swapper/023:30:210
237409913521,32cyclictest0-21swapper/2222:09:2515
237029913529,71cyclictest0-21swapper/1522:30:417
237029913529,62cyclictest0-21swapper/1523:18:477
237029913529,62cyclictest0-21swapper/1523:18:467
237029913526,66cyclictest0-21swapper/1519:14:017
23702991350,82cyclictest0-21swapper/1521:51:077
23686991350,84cyclictest0-21swapper/1200:35:134
23686991350,84cyclictest0-21swapper/1200:35:124
236369913542,57cyclictest0-21swapper/000:32:050
236369913542,57cyclictest0-21swapper/000:32:040
236369913530,72cyclictest0-21swapper/022:42:320
236369913528,62cyclictest0-21swapper/019:53:070
23702991340,82cyclictest0-21swapper/1522:56:517
236369913442,62cyclictest0-21swapper/023:14:030
236369913441,59cyclictest0-21swapper/023:35:260
236369913441,59cyclictest0-21swapper/023:35:250
236369913428,70cyclictest0-21swapper/023:59:570
236369913428,70cyclictest0-21swapper/023:59:560
237029913357,63cyclictest0-21swapper/1522:27:267
23702991330,78cyclictest0-21swapper/1523:08:067
236709913323,69cyclictest0-21swapper/822:28:0230
236549913326,58cyclictest0-21swapper/400:30:3526
236549913326,58cyclictest0-21swapper/400:30:3526
236369913354,63cyclictest0-21swapper/019:55:170
236369913348,66cyclictest0-21swapper/020:23:020
236369913330,62cyclictest0-21swapper/019:33:520
236369913329,66cyclictest0-21swapper/022:52:230
236369913327,64cyclictest0-21swapper/019:25:210
236369913247,58cyclictest0-21swapper/000:18:580
236369913247,58cyclictest0-21swapper/000:18:570
236369913239,63cyclictest0-21swapper/022:25:010
236369913232,67cyclictest0-21swapper/020:50:010
236369913231,68cyclictest0-21swapper/023:27:230
236369913231,68cyclictest0-21swapper/023:27:230
236369913228,67cyclictest0-21swapper/020:50:140
237409913128,70cyclictest0-21swapper/2221:45:2215
237409913126,67cyclictest0-21swapper/2221:01:0015
237029913130,66cyclictest0-21swapper/1500:17:347
237029913130,66cyclictest0-21swapper/1500:17:337
23702991310,77cyclictest0-21swapper/1523:45:307
23702991310,77cyclictest0-21swapper/1523:45:307
23702991310,71cyclictest0-21swapper/1520:20:177
23686991314,120cyclictest0-21swapper/1221:10:204
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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