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2026-03-13 - 08:11
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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 Fri Mar 13, 2026 00:49:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912670,259ptp4l0-21swapper/119:05:451
193649922720,205cyclictest151rcu_preempt22:23:3518
19194991740,138cyclictest0-21swapper/300:02:3723
330891167158,7phc2sys0-21swapper/219:05:2912
193489916335,91cyclictest0-21swapper/2323:19:0116
192339916220,87cyclictest0-21swapper/823:44:5330
191949916028,95cyclictest0-21swapper/320:36:3223
193489915931,79cyclictest0-21swapper/2322:35:1916
191949915929,97cyclictest0-21swapper/323:35:2223
19172991583,132cyclictest0-21swapper/022:20:010
19194991575,137cyclictest0-21swapper/320:30:1423
19172991563,117cyclictest0-21swapper/020:15:140
19172991563,117cyclictest0-21swapper/020:15:130
19194991551,100cyclictest34-21ksoftirqd/321:16:5523
19233991547,137cyclictest0-21swapper/819:34:1130
19233991547,137cyclictest0-21swapper/819:34:1030
19172991544,121cyclictest0-21swapper/022:50:130
19172991533,107cyclictest0-21swapper/021:29:020
193489915035,77cyclictest0-21swapper/2322:40:3916
19257991506,117cyclictest0-21swapper/1121:27:463
19194991484,86cyclictest0-21swapper/322:25:2023
19172991480,91cyclictest0-21swapper/020:40:350
1923399147146,1cyclictest151rcu_preempt22:50:2130
19172991463,100cyclictest0-21swapper/023:25:130
193489914527,77cyclictest0-21swapper/2320:15:1716
193489914527,77cyclictest0-21swapper/2320:15:1616
191949914446,97cyclictest0-21swapper/321:44:3623
19233991438,81cyclictest0-21swapper/821:40:2130
19233991438,133cyclictest0-21swapper/822:02:0330
193339914234,89cyclictest0-21swapper/2122:35:4814
191949914223,73cyclictest0-21swapper/323:08:5523
193339914135,101cyclictest0-21swapper/2120:22:0714
193339914135,101cyclictest0-21swapper/2120:22:0614
19233991418,82cyclictest0-21swapper/823:58:4230
191949914126,83cyclictest0-21swapper/319:50:1223
191949914126,83cyclictest0-21swapper/319:50:1223
191779914120,42cyclictest0-21swapper/123:08:361
191949914025,112cyclictest0-21swapper/321:38:3723
193489913930,52cyclictest0-21swapper/2323:50:0716
193339913937,68cyclictest0-21swapper/2121:40:1414
19201991390,85cyclictest0-21swapper/422:48:3826
19177991390,85cyclictest0-21swapper/100:11:401
193339913835,102cyclictest0-21swapper/2100:36:5414
191779913855,62cyclictest0-21swapper/120:14:551
191779913855,62cyclictest0-21swapper/120:14:541
19172991380,88cyclictest0-21swapper/000:16:130
19412991377,126cyclictest0-21swapper/3123:35:4825
19233991370,86cyclictest0-21swapper/822:19:1830
19194991370,91cyclictest34-21ksoftirqd/300:17:0423
193339913634,80cyclictest0-21swapper/2100:14:3514
193339913632,82cyclictest0-21swapper/2119:10:2114
193339913632,82cyclictest0-21swapper/2119:10:2014
19333991361,82cyclictest0-21swapper/2121:54:3814
19272991363,96cyclictest0-21swapper/1323:59:355
192019913634,65cyclictest0-21swapper/420:11:3126
192019913634,65cyclictest0-21swapper/420:11:3126
19172991363,83cyclictest0-21swapper/023:04:550
19412991358,126cyclictest0-21swapper/3120:55:1425
19412991357,126cyclictest0-21swapper/3100:20:1125
19412991357,122cyclictest0-21swapper/3123:09:0625
19233991358,126cyclictest0-21swapper/823:35:1630
1923399135133,1cyclictest64-21ksoftirqd/822:25:1330
191949913578,53cyclictest0-21swapper/322:12:3123
191949913527,68cyclictest0-21swapper/319:57:0023
191949913527,68cyclictest0-21swapper/319:56:5923
191779913546,59cyclictest0-21swapper/123:04:191
19412991348,93cyclictest0-21swapper/3100:02:3425
19412991347,94cyclictest0-21swapper/3120:46:0925
193719913453,41cyclictest0-21swapper/2621:25:2319
191949913429,67cyclictest0-21swapper/320:58:2723
191949913427,64cyclictest0-21swapper/321:20:0923
192019913326,64cyclictest0-21swapper/419:14:2026
192019913326,64cyclictest0-21swapper/419:14:2026
191949913331,66cyclictest0-21swapper/322:17:5123
191949913329,74cyclictest0-21swapper/319:39:2123
191949913329,74cyclictest0-21swapper/319:39:2123
191949913328,71cyclictest0-21swapper/323:57:4823
191949913328,71cyclictest0-21swapper/321:58:3823
191949913328,69cyclictest0-21swapper/319:42:2223
191949913328,69cyclictest0-21swapper/319:42:2123
191949913327,67cyclictest0-21swapper/320:16:3423
191949913327,67cyclictest0-21swapper/320:16:3323
191949913327,64cyclictest0-21swapper/322:48:1923
191779913343,60cyclictest0-21swapper/121:54:351
191779913341,61cyclictest0-21swapper/100:40:001
19333991322,129cyclictest0-21swapper/2122:52:4914
19272991324,76cyclictest0-21swapper/1323:09:535
192019913251,53cyclictest0-21swapper/423:59:4526
192019913229,71cyclictest0-21swapper/423:35:1026
192019913227,69cyclictest0-21swapper/422:23:5826
191949913235,71cyclictest0-21swapper/321:29:4523
191949913230,74cyclictest0-21swapper/321:30:1823
191779913251,65cyclictest0-21swapper/122:21:341
191779913250,56cyclictest0-21swapper/100:23:581
191779913244,64cyclictest0-21swapper/121:29:281
191779913240,57cyclictest0-21swapper/120:38:251
191779913228,68cyclictest0-21swapper/122:33:201
191779913227,62cyclictest0-21swapper/120:26:081
19172991323,106cyclictest0-21swapper/019:58:370
19172991323,106cyclictest0-21swapper/019:58:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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