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2026-07-31 - 15:37
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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 Jul 31, 2026 12:49:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273913050,293ptp4l0-21swapper/107:05:221
24235991974,1cyclictest151rcu_preempt10:01:3114
241359919323,131cyclictest0-21swapper/310:50:2323
242559918839,39cyclictest151rcu_preempt08:22:1219
242559918839,39cyclictest151rcu_preempt08:22:1219
2417899174173,1cyclictest151rcu_preempt12:28:545
241739917453,68cyclictest151rcu_preempt09:16:504
241629917025,57cyclictest151rcu_preempt11:40:2231
2412499167165,1cyclictest151rcu_preempt10:59:271
241359916646,75cyclictest0-21swapper/312:05:1323
2423599155151,1cyclictest143-21ksoftirqd/2109:51:2214
242359915420,130cyclictest151rcu_preempt11:30:4614
330891152144,6phc2sys0-21swapper/207:05:1612
241739915113,83cyclictest0-21swapper/1212:20:114
24235991489,121cyclictest151rcu_preempt10:20:2914
24178991450,87cyclictest0-21swapper/1310:50:335
241359914528,62cyclictest0-21swapper/311:10:2423
241249914448,64cyclictest0-21swapper/108:00:111
24287991431,88cyclictest0-21swapper/3109:21:3625
24287991431,88cyclictest0-21swapper/3109:21:3625
242619914219,120cyclictest0-21swapper/2708:15:4820
242619914219,120cyclictest0-21swapper/2708:15:4820
241359914125,73cyclictest0-21swapper/309:40:2223
242619913819,117cyclictest0-21swapper/2711:41:0220
241739913810,124cyclictest151rcu_preempt12:27:054
241539913841,66cyclictest0-21swapper/712:02:0429
241249913834,102cyclictest0-21swapper/110:46:521
242619913619,96cyclictest0-21swapper/2712:16:1820
242619913618,86cyclictest0-21swapper/2707:40:1520
24153991362,122cyclictest0-21swapper/710:05:0129
24246991350,83cyclictest0-21swapper/2411:42:3717
241539913561,62cyclictest0-21swapper/710:58:2829
241499913535,98cyclictest151rcu_preempt09:45:1428
242619913419,78cyclictest0-21swapper/2708:30:1520
242619913419,78cyclictest0-21swapper/2708:30:1420
242619913419,114cyclictest0-21swapper/2708:39:5120
242619913419,114cyclictest0-21swapper/2708:39:5120
242359913430,88cyclictest0-21swapper/2110:58:4214
24235991340,84cyclictest0-21swapper/2111:46:4914
242319913428,64cyclictest0-21swapper/2012:14:2513
24173991340,86cyclictest15303-21diskmemload11:09:354
241499913444,58cyclictest0-21swapper/610:30:4028
241249913433,100cyclictest0-21swapper/112:22:171
24282991330,84cyclictest0-21swapper/3010:43:3924
242619913310,112cyclictest0-21swapper/2710:32:3720
242319913329,66cyclictest0-21swapper/2010:10:0613
241789913332,46cyclictest0-21swapper/1310:15:015
241539913323,67cyclictest0-21swapper/710:40:1929
242469913225,74cyclictest0-21swapper/2412:31:3317
242469913221,69cyclictest0-21swapper/2409:25:0117
242469913221,69cyclictest0-21swapper/2409:25:0117
242319913213,71cyclictest0-21swapper/2009:05:1513
242319913213,71cyclictest0-21swapper/2009:05:1513
241789913221,84cyclictest2434-21taskset08:56:595
241789913221,84cyclictest2434-21taskset08:56:595
242559913124,60cyclictest151rcu_preempt07:17:1019
24246991310,81cyclictest0-21swapper/2412:20:5217
241789913112,72cyclictest0-21swapper/1308:32:095
241789913112,72cyclictest0-21swapper/1308:32:085
241739913134,57cyclictest0-21swapper/1210:06:324
241499913192,35cyclictest521ksoftirqd/610:14:3828
241249913112,22cyclictest4489-21taskset07:44:381
241629913010,119cyclictest0-21swapper/910:28:0231
241499913046,54cyclictest0-21swapper/609:13:1028
241499913046,54cyclictest0-21swapper/609:13:1028
241359913027,69cyclictest0-21swapper/308:58:2323
241359913027,69cyclictest0-21swapper/308:58:2223
241249913030,76cyclictest0-21swapper/111:03:431
242469912946,57cyclictest0-21swapper/2409:35:1717
242469912946,57cyclictest0-21swapper/2409:35:1717
242469912946,55cyclictest0-21swapper/2410:08:0117
242359912951,55cyclictest0-21swapper/2112:29:0214
241949912922,80cyclictest151rcu_preempt11:09:128
241789912922,77cyclictest1334-21gdbus09:14:405
241789912922,77cyclictest1334-21gdbus09:14:405
241629912910,93cyclictest0-21swapper/910:50:1331
241629912910,118cyclictest5299-21taskset12:16:4831
241629912910,106cyclictest0-21swapper/909:18:3331
241539912929,60cyclictest0-21swapper/710:02:3129
242469912849,56cyclictest0-21swapper/2411:15:5417
24231991285,38cyclictest151rcu_preempt10:05:0213
241739912851,54cyclictest0-21swapper/1212:08:384
241739912839,61cyclictest0-21swapper/1211:04:574
241629912810,96cyclictest0-21swapper/912:28:1831
241629912810,90cyclictest0-21swapper/910:20:0131
241629912810,87cyclictest0-21swapper/910:34:4431
241629912810,82cyclictest0-21swapper/911:11:5231
241629912810,82cyclictest0-21swapper/910:14:0931
241629912810,108cyclictest0-21swapper/911:15:1731
241539912827,59cyclictest0-21swapper/710:36:0229
241499912847,56cyclictest0-21swapper/609:40:4028
241499912845,55cyclictest0-21swapper/609:36:5628
241499912845,55cyclictest0-21swapper/609:36:5628
241359912839,57cyclictest0-21swapper/310:08:2423
24231991273,74cyclictest0-21swapper/2007:40:1413
24213991272,81cyclictest0-21swapper/1810:25:0010
24213991272,75cyclictest0-21swapper/1809:20:1810
24213991272,75cyclictest0-21swapper/1809:20:1810
241739912747,57cyclictest0-21swapper/1210:30:024
241739912727,89cyclictest151rcu_preempt12:15:244
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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