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2026-08-17 - 16:31
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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 Mon Aug 17, 2026 12:49:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
869499315118,1cyclictest151rcu_preempt11:58:4415
3273912900,282ptp4l0-21swapper/107:08:521
863399278163,1cyclictest151rcu_preempt11:00:535
863399278163,1cyclictest151rcu_preempt11:00:535
8717991881,186cyclictest0-21swapper/2511:42:4518
8717991881,145cyclictest0-21swapper/2511:51:5118
8717991881,144cyclictest0-21swapper/2510:23:3918
8717991741,128cyclictest0-21swapper/2508:30:1118
8717991721,124cyclictest0-21swapper/2509:41:2618
330891169160,6phc2sys0-21swapper/207:05:2212
8717991681,123cyclictest0-21swapper/2511:20:1918
8717991681,123cyclictest0-21swapper/2511:20:1918
86419916848,75cyclictest0-21swapper/1410:41:396
86419916848,75cyclictest0-21swapper/1410:41:396
87689916730,136cyclictest0-21swapper/3112:38:2525
863399167163,3cyclictest151rcu_preempt09:43:235
8717991652,133cyclictest0-21swapper/2510:46:5618
8717991652,133cyclictest0-21swapper/2510:46:5618
87689916444,119cyclictest0-21swapper/3109:49:0125
87689916428,135cyclictest0-21swapper/3110:22:4125
8717991614,129cyclictest0-21swapper/2511:01:5518
8717991614,129cyclictest0-21swapper/2511:01:5418
8717991591,116cyclictest0-21swapper/2512:18:5018
86339915923,135cyclictest0-21swapper/1312:25:375
87689915831,73cyclictest0-21swapper/3112:28:5025
8717991581,120cyclictest0-21swapper/2509:26:2718
87689915721,102cyclictest0-21swapper/3111:20:4225
87689915721,102cyclictest0-21swapper/3111:20:4225
87279915649,59cyclictest0-21swapper/2611:17:4019
87279915649,59cyclictest0-21swapper/2611:17:3919
8717991541,123cyclictest0-21swapper/2512:13:0418
86539915324,128cyclictest0-21swapper/1610:48:578
86539915324,128cyclictest0-21swapper/1610:48:578
86539915224,94cyclictest0-21swapper/1609:55:118
86539915224,89cyclictest0-21swapper/1609:51:478
86539915224,81cyclictest0-21swapper/1610:56:278
86539915224,81cyclictest0-21swapper/1610:56:268
86539915224,79cyclictest0-21swapper/1612:15:348
86539915223,98cyclictest0-21swapper/1609:20:148
8717991514,117cyclictest0-21swapper/2511:18:4218
8717991514,117cyclictest0-21swapper/2511:18:4218
86539915122,117cyclictest0-21swapper/1610:38:498
86539915122,117cyclictest0-21swapper/1610:38:488
86539914820,100cyclictest0-21swapper/1609:05:198
86339914820,93cyclictest0-21swapper/1312:05:205
8558991480,89cyclictest0-21swapper/110:16:191
8558991480,89cyclictest0-21swapper/110:16:181
8558991480,88cyclictest0-21swapper/112:05:201
8558991480,88cyclictest0-21swapper/110:10:261
8558991480,88cyclictest0-21swapper/110:10:251
86539914720,101cyclictest0-21swapper/1609:40:008
86339914723,86cyclictest0-21swapper/1309:14:305
8558991470,88cyclictest0-21swapper/108:00:331
8558991470,85cyclictest0-21swapper/108:05:231
8710991460,88cyclictest0-21swapper/2411:55:2417
86339914619,94cyclictest0-21swapper/1312:00:115
8735991450,83cyclictest0-21swapper/2708:45:2020
8727991458,134cyclictest151rcu_preempt10:37:0219
8727991458,134cyclictest151rcu_preempt10:37:0119
87279914530,93cyclictest0-21swapper/2611:26:1319
87279914530,93cyclictest0-21swapper/2611:26:1219
87279914530,92cyclictest0-21swapper/2609:31:1719
8717991441,109cyclictest0-21swapper/2511:57:4418
86539914415,110cyclictest141950irq/62-enp5s0-r09:32:318
8558991440,90cyclictest0-21swapper/108:55:231
8558991440,86cyclictest0-21swapper/107:30:061
87009914341,60cyclictest0-21swapper/2311:10:3816
87009914341,60cyclictest0-21swapper/2311:10:3816
86339914323,82cyclictest0-21swapper/1310:35:445
86339914323,82cyclictest0-21swapper/1310:35:445
86339914323,78cyclictest0-21swapper/1311:11:335
86339914323,78cyclictest0-21swapper/1311:11:335
87179914249,60cyclictest0-21swapper/2507:15:2018
87179914248,63cyclictest0-21swapper/2512:39:5618
87009914225,53cyclictest0-21swapper/2311:59:4316
8558991420,88cyclictest0-21swapper/111:07:371
8558991420,88cyclictest0-21swapper/111:07:361
8558991420,86cyclictest0-21swapper/109:15:541
87689914121,82cyclictest0-21swapper/3109:25:1325
86539914124,58cyclictest0-21swapper/1612:00:178
86539914123,86cyclictest0-21swapper/1612:31:358
8653991410,87cyclictest0-21swapper/1611:54:078
85589914151,56cyclictest0-21swapper/108:15:001
8558991410,84cyclictest0-21swapper/109:35:091
8558991410,84cyclictest0-21swapper/109:25:311
87279914023,37cyclictest0-21swapper/2612:20:1219
85589914051,59cyclictest0-21swapper/111:37:331
85589914051,59cyclictest0-21swapper/111:37:321
8558991400,88cyclictest0-21swapper/109:44:461
87689913951,59cyclictest0-21swapper/3111:27:5325
87689913951,59cyclictest0-21swapper/3111:27:5325
8717991391,99cyclictest0-21swapper/2510:05:2818
8717991391,99cyclictest0-21swapper/2510:05:2818
8717991391,92cyclictest0-21swapper/2510:16:4318
8717991391,92cyclictest0-21swapper/2510:16:4218
85589913937,63cyclictest0-21swapper/107:55:021
8558991390,87cyclictest0-21swapper/111:22:031
8558991390,87cyclictest0-21swapper/111:22:031
8558991390,84cyclictest0-21swapper/111:41:491
87179913847,62cyclictest0-21swapper/2510:58:5618
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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