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2026-08-08 - 17:13
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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 Sat Aug 08, 2026 12:49:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912600,252ptp4l0-21swapper/107:09:301
3273912600,252ptp4l0-21swapper/107:09:301
330891255250,4phc2sys0-21swapper/207:08:0012
330891255250,4phc2sys0-21swapper/207:08:0012
160749915935,77cyclictest0-21swapper/807:15:1830
160749915932,52cyclictest0-21swapper/810:20:2830
160749915632,92cyclictest0-21swapper/811:02:0930
160749915230,72cyclictest0-21swapper/812:25:0130
160749915230,72cyclictest0-21swapper/812:25:0130
161329915024,50cyclictest0-21swapper/1611:18:578
161329915018,102cyclictest0-21swapper/1611:38:058
161329915018,102cyclictest0-21swapper/1611:38:058
162099914922,122cyclictest0-21swapper/2607:50:1619
162099914822,98cyclictest0-21swapper/2611:50:1419
160749914626,83cyclictest0-21swapper/809:37:4230
160749914537,68cyclictest0-21swapper/810:00:1030
162099914322,80cyclictest0-21swapper/2610:19:5319
161329914354,62cyclictest0-21swapper/1609:33:068
160749914361,81cyclictest64-21ksoftirqd/812:25:1530
161669914237,71cyclictest0-21swapper/2011:34:5813
161669914237,71cyclictest0-21swapper/2011:34:5813
16132991420,103cyclictest0-21swapper/1611:10:228
16132991420,103cyclictest0-21swapper/1611:10:228
162099914122,64cyclictest0-21swapper/2610:50:2219
161329914152,59cyclictest0-21swapper/1610:21:468
161329914130,67cyclictest0-21swapper/1610:29:068
161329914129,66cyclictest0-21swapper/1610:08:528
160749914121,86cyclictest0-21swapper/808:15:2430
160249914128,111cyclictest0-21swapper/111:26:511
160249914128,111cyclictest0-21swapper/111:26:501
161329914030,70cyclictest0-21swapper/1610:16:198
1617399139137,1cyclictest143-21ksoftirqd/2110:47:3714
161329913928,65cyclictest0-21swapper/1609:46:568
160249913928,84cyclictest0-21swapper/109:18:481
160249913928,109cyclictest0-21swapper/109:31:071
161329913830,66cyclictest0-21swapper/1611:02:338
161329913828,64cyclictest0-21swapper/1608:02:558
160249913828,74cyclictest0-21swapper/110:20:011
160249913828,64cyclictest0-21swapper/109:27:381
160249913828,109cyclictest0-21swapper/110:32:021
160249913827,102cyclictest0-21swapper/110:58:471
162099913722,61cyclictest0-21swapper/2609:37:0819
161329913756,65cyclictest0-21swapper/1608:54:458
161329913754,64cyclictest0-21swapper/1610:53:468
161329913729,67cyclictest0-21swapper/1607:55:158
162299913617,89cyclictest151rcu_preempt11:17:4225
161329913645,53cyclictest0-21swapper/1609:59:458
161329913629,63cyclictest0-21swapper/1608:10:138
161329913629,62cyclictest0-21swapper/1611:20:398
161329913629,62cyclictest0-21swapper/1611:20:398
161329913625,70cyclictest0-21swapper/1610:45:268
160249913628,75cyclictest0-21swapper/111:45:151
160249913628,75cyclictest0-21swapper/111:45:151
161329913529,63cyclictest0-21swapper/1612:35:178
160249913526,85cyclictest0-21swapper/111:17:151
162179913419,50cyclictest0-21swapper/2809:39:3921
161329913445,64cyclictest0-21swapper/1608:09:378
161329913429,67cyclictest0-21swapper/1607:11:378
161329913428,66cyclictest0-21swapper/1607:20:018
161329913419,90cyclictest0-21swapper/1612:13:078
161329913419,90cyclictest0-21swapper/1612:13:078
160249913423,105cyclictest0-21swapper/111:42:541
160249913423,105cyclictest0-21swapper/111:42:541
161329913329,65cyclictest0-21swapper/1610:10:198
160749913328,104cyclictest151rcu_preempt09:45:4430
16217991320,80cyclictest0-21swapper/2809:03:1821
16209991320,78cyclictest0-21swapper/2607:42:4719
161329913230,69cyclictest0-21swapper/1611:41:518
161329913230,69cyclictest0-21swapper/1611:41:518
161329913221,66cyclictest0-21swapper/1610:40:238
161329913031,65cyclictest0-21swapper/1610:30:128
161329913028,57cyclictest0-21swapper/1612:32:368
161329913028,57cyclictest0-21swapper/1612:32:368
161329913027,61cyclictest0-21swapper/1608:35:198
161329913027,60cyclictest0-21swapper/1609:28:458
160249913021,103cyclictest0-21swapper/107:45:171
16221991294,68cyclictest0-21swapper/2908:25:3522
160249912923,66cyclictest0-21swapper/112:10:071
160249912923,66cyclictest0-21swapper/112:10:071
162219912818,83cyclictest0-21swapper/2912:20:4522
162219912818,83cyclictest0-21swapper/2912:20:4522
16221991280,78cyclictest0-21swapper/2910:42:2422
161669912821,86cyclictest0-21swapper/2011:40:5413
161669912821,86cyclictest0-21swapper/2011:40:5413
161329912829,65cyclictest0-21swapper/1612:07:478
161329912829,65cyclictest0-21swapper/1612:07:478
161329912828,55cyclictest0-21swapper/1612:00:208
161329912828,55cyclictest0-21swapper/1612:00:208
16132991280,75cyclictest0-21swapper/1612:20:198
16132991280,75cyclictest0-21swapper/1612:20:198
16221991270,83cyclictest0-21swapper/2910:17:0122
161329912728,58cyclictest0-21swapper/1608:20:128
160249912726,73cyclictest0-21swapper/109:59:121
162219912615,69cyclictest0-21swapper/2911:55:3722
162219912615,69cyclictest0-21swapper/2911:55:3722
161329912626,59cyclictest0-21swapper/1607:42:378
160249912624,64cyclictest0-21swapper/107:52:461
16217991250,77cyclictest0-21swapper/2809:55:4021
161329912526,58cyclictest0-21swapper/1608:31:318
160749912415,83cyclictest0-21swapper/808:05:1630
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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