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2026-07-22 - 15:20
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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 rackcslot8.osadl.org (updated Wed Jul 22, 2026 00:49:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
330891222211,9phc2sys0-21swapper/219:05:1212
330891222211,9phc2sys0-21swapper/219:05:1212
22969991912,153cyclictest0-21swapper/1622:35:148
229109919118,141cyclictest0-21swapper/223:52:5012
22969991883,153cyclictest0-21swapper/1623:25:258
22969991872,139cyclictest0-21swapper/1600:20:328
22969991872,139cyclictest0-21swapper/1600:20:328
230379918629,99cyclictest0-21swapper/3022:15:1524
22969991862,162cyclictest0-21swapper/1619:40:228
22969991852,181cyclictest0-21swapper/1600:15:188
22969991852,181cyclictest0-21swapper/1600:15:178
230019917512,73cyclictest0-21swapper/2400:10:2417
230019917512,73cyclictest0-21swapper/2400:10:2317
22969991715,131cyclictest0-21swapper/1622:16:248
198702168160,6sleep310-21swapper/3119:05:1825
198702168160,6sleep310-21swapper/3119:05:1825
23010991656,132cyclictest0-21swapper/2621:21:1219
23010991656,126cyclictest0-21swapper/2621:43:3919
22910991638,125cyclictest151rcu_preempt00:39:5412
22910991638,125cyclictest151rcu_preempt00:39:5412
23010991616,144cyclictest0-21swapper/2620:45:2319
229109916118,95cyclictest0-21swapper/200:03:1712
229109916118,95cyclictest0-21swapper/200:03:1712
23010991596,110cyclictest0-21swapper/2621:18:0019
22969991592,111cyclictest0-21swapper/1623:21:068
23010991566,106cyclictest0-21swapper/2621:28:4119
22969991542,111cyclictest0-21swapper/1622:10:078
22969991532,103cyclictest0-21swapper/1623:56:068
22969991532,103cyclictest0-21swapper/1623:56:058
22969991522,120cyclictest0-21swapper/1623:47:328
22969991515,114cyclictest0-21swapper/1621:20:188
22969991512,111cyclictest0-21swapper/1622:45:198
22969991512,110cyclictest0-21swapper/1622:21:148
3273911500,142ptp4l0-21swapper/119:06:151
3273911500,142ptp4l0-21swapper/119:06:151
22969991502,114cyclictest0-21swapper/1623:43:478
22969991502,114cyclictest0-21swapper/1623:43:468
229699914929,98cyclictest0-21swapper/1621:16:338
22969991480,86cyclictest0-21swapper/1621:04:308
23010991466,103cyclictest0-21swapper/2600:34:4119
23010991466,103cyclictest0-21swapper/2600:34:4019
22969991460,89cyclictest0-21swapper/1620:09:268
229699914550,61cyclictest0-21swapper/1623:14:448
22973991440,89cyclictest0-21swapper/1723:33:049
22973991440,86cyclictest0-21swapper/1720:46:519
229109914438,97cyclictest28-21ksoftirqd/221:29:2112
23010991436,96cyclictest0-21swapper/2620:35:1519
229109914338,62cyclictest0-21swapper/222:28:4112
22990991420,85cyclictest0-21swapper/2122:02:1614
22973991420,87cyclictest0-21swapper/1722:07:019
22969991420,99cyclictest0-21swapper/1619:25:258
229109914259,64cyclictest0-21swapper/221:24:3212
229669914140,65cyclictest0-21swapper/1523:26:057
229699914024,115cyclictest0-21swapper/1620:49:508
22952991401,137cyclictest0-21swapper/1222:15:174
229699913949,58cyclictest0-21swapper/1621:43:208
22969991390,91cyclictest0-21swapper/1619:34:108
229109913929,67cyclictest0-21swapper/200:09:4212
229109913929,67cyclictest0-21swapper/200:09:4212
229699913855,58cyclictest0-21swapper/1622:34:358
229699913841,65cyclictest0-21swapper/1622:27:408
22952991380,137cyclictest0-21swapper/1221:44:484
229109913863,61cyclictest0-21swapper/200:25:4412
229109913863,61cyclictest0-21swapper/200:25:4412
229109913830,65cyclictest0-21swapper/223:55:1612
229109913830,65cyclictest0-21swapper/223:55:1612
229699913725,83cyclictest0-21swapper/1623:07:478
22952991371,122cyclictest0-21swapper/1222:39:274
22952991371,106cyclictest0-21swapper/1223:38:394
22952991371,106cyclictest0-21swapper/1200:26:064
22952991371,106cyclictest0-21swapper/1200:26:064
22952991370,129cyclictest0-21swapper/1221:55:134
22952991370,126cyclictest0-21swapper/1220:35:194
22952991370,108cyclictest0-21swapper/1200:31:174
22952991370,108cyclictest0-21swapper/1200:31:174
22952991370,106cyclictest0-21swapper/1223:30:224
22952991370,105cyclictest0-21swapper/1223:19:594
229109913753,59cyclictest0-21swapper/221:58:2812
229109913748,59cyclictest0-21swapper/222:38:5012
22990991360,80cyclictest0-21swapper/2123:35:1514
229699913645,64cyclictest0-21swapper/1621:10:268
22955991360,81cyclictest0-21swapper/1322:05:215
22952991361,133cyclictest0-21swapper/1222:00:214
22952991360,97cyclictest0-21swapper/1223:41:204
22952991360,97cyclictest0-21swapper/1223:41:204
22952991360,116cyclictest0-21swapper/1222:34:004
22952991360,114cyclictest0-21swapper/1200:35:214
22952991360,114cyclictest0-21swapper/1200:35:214
229109913654,63cyclictest0-21swapper/220:05:2712
229109913630,69cyclictest0-21swapper/221:34:4212
229109913629,66cyclictest0-21swapper/221:07:2612
229109913629,64cyclictest0-21swapper/222:12:0712
229109913627,68cyclictest0-21swapper/223:32:1612
229699913544,59cyclictest0-21swapper/1623:01:348
229699913544,59cyclictest0-21swapper/1621:59:338
229699913540,71cyclictest0-21swapper/1620:15:218
229699913526,67cyclictest0-21swapper/1620:40:138
229699913524,70cyclictest0-21swapper/1600:37:058
229699913524,70cyclictest0-21swapper/1600:37:058
22952991351,103cyclictest0-21swapper/1200:05:244
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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