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2026-04-28 - 19:22
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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 Tue Apr 28, 2026 12:49:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273913280,320ptp4l0-21swapper/107:10:001
330891268260,6phc2sys0-21swapper/207:08:5912
2942199220106,1cyclictest151rcu_preempt10:47:2412
2949899164157,3cyclictest151rcu_preempt11:29:379
295069915441,75cyclictest0-21swapper/1911:26:2711
295729915227,85cyclictest0-21swapper/2811:55:1621
295569914443,83cyclictest0-21swapper/2609:16:4219
295189914430,71cyclictest0-21swapper/2110:34:3814
295069914229,77cyclictest0-21swapper/1911:04:3011
295189914151,58cyclictest0-21swapper/2112:25:4814
295189914043,58cyclictest0-21swapper/2107:37:4614
295189914043,58cyclictest0-21swapper/2107:37:4514
295069914027,79cyclictest0-21swapper/1907:30:1311
295069914027,79cyclictest0-21swapper/1907:30:1211
295729913844,62cyclictest0-21swapper/2812:18:1321
295189913855,60cyclictest0-21swapper/2111:19:3314
295069913723,77cyclictest0-21swapper/1909:35:1611
295569913652,53cyclictest0-21swapper/2610:25:3819
295569913617,92cyclictest20071-21kworker/26:110:42:4419
295429913516,79cyclictest0-21swapper/2410:06:3917
295189913547,55cyclictest0-21swapper/2112:13:3214
295189913530,61cyclictest0-21swapper/2110:01:3114
295189913529,61cyclictest0-21swapper/2109:17:2514
295189913447,53cyclictest0-21swapper/2109:27:4914
295189913431,67cyclictest0-21swapper/2110:45:5114
295189913431,66cyclictest0-21swapper/2108:35:2014
295189913430,63cyclictest0-21swapper/2107:15:1014
295189913430,63cyclictest0-21swapper/2107:15:0914
295189913428,64cyclictest0-21swapper/2111:06:1014
29491991341,84cyclictest0-21swapper/1608:50:148
29464991340,73cyclictest0-21swapper/909:24:4131
295569913269,50cyclictest1721rcuc/2609:05:1419
295569913156,60cyclictest0-21swapper/2610:24:0219
295729913028,67cyclictest0-21swapper/2811:09:1721
295569913046,52cyclictest0-21swapper/2610:16:0119
295569913028,68cyclictest0-21swapper/2607:10:0419
295569913028,68cyclictest0-21swapper/2607:10:0319
295569913027,65cyclictest0-21swapper/2611:30:1919
295569913026,65cyclictest0-21swapper/2608:10:2719
295569913026,65cyclictest0-21swapper/2608:10:2619
295729912948,53cyclictest0-21swapper/2809:19:5921
295729912925,63cyclictest0-21swapper/2808:12:0921
295729912925,63cyclictest0-21swapper/2808:12:0921
295569912942,67cyclictest0-21swapper/2612:38:1219
295569912938,68cyclictest0-21swapper/2612:10:1019
295569912936,66cyclictest0-21swapper/2610:35:0119
295569912928,69cyclictest0-21swapper/2612:18:5719
295569912928,68cyclictest0-21swapper/2609:27:2319
295189912928,59cyclictest0-21swapper/2110:25:3314
294869912915,76cyclictest0-21swapper/1510:03:337
295729912846,57cyclictest0-21swapper/2808:53:1621
29572991283,83cyclictest18157-21diskmemload12:02:2721
295729912827,64cyclictest0-21swapper/2812:24:0821
295569912848,67cyclictest0-21swapper/2610:55:3519
295569912847,61cyclictest0-21swapper/2609:51:2519
295569912843,56cyclictest0-21swapper/2609:46:0619
295569912842,57cyclictest0-21swapper/2611:37:4619
295569912832,72cyclictest0-21swapper/2610:35:0119
295569912827,70cyclictest0-21swapper/2609:20:0819
295569912827,69cyclictest0-21swapper/2611:41:1419
295569912826,68cyclictest0-21swapper/2610:08:3319
295069912822,72cyclictest0-21swapper/1907:45:0211
295069912822,72cyclictest0-21swapper/1907:45:0211
294989912814,22cyclictest0-21swapper/1707:25:249
294989912814,22cyclictest0-21swapper/1707:25:249
295729912747,59cyclictest0-21swapper/2812:33:2921
295729912725,57cyclictest0-21swapper/2810:00:0621
295729912719,63cyclictest0-21swapper/2810:38:3321
295569912748,63cyclictest0-21swapper/2611:59:4219
295569912741,66cyclictest0-21swapper/2612:26:2619
295569912732,68cyclictest0-21swapper/2609:38:3619
295569912731,75cyclictest0-21swapper/2611:04:0819
295569912730,69cyclictest0-21swapper/2611:12:4019
295569912728,66cyclictest0-21swapper/2610:13:5319
295569912727,68cyclictest0-21swapper/2612:23:1419
295189912726,61cyclictest0-21swapper/2111:45:1114
294499912731,36cyclictest0-21swapper/611:25:1028
295569912631,72cyclictest0-21swapper/2611:26:4919
295569912630,75cyclictest0-21swapper/2611:18:0219
295569912627,69cyclictest0-21swapper/2608:35:0019
295569912627,65cyclictest0-21swapper/2607:30:2219
295569912627,65cyclictest0-21swapper/2607:30:2219
295569912626,66cyclictest0-21swapper/2608:40:2119
295569912626,64cyclictest0-21swapper/2608:00:1719
295569912626,64cyclictest0-21swapper/2608:00:1619
295569912624,60cyclictest0-21swapper/2608:09:4419
295569912624,60cyclictest0-21swapper/2608:09:4319
295189912633,57cyclictest0-21swapper/2109:44:5714
295189912625,59cyclictest0-21swapper/2112:38:5814
2949899126124,1cyclictest118-21ksoftirqd/1712:20:239
294919912641,75cyclictest112-21ksoftirqd/1611:27:268
29464991260,66cyclictest0-21swapper/910:32:1931
294499912632,93cyclictest0-21swapper/610:01:5828
295729912547,58cyclictest0-21swapper/2811:14:3921
295729912542,57cyclictest0-21swapper/2809:57:0721
295729912527,64cyclictest0-21swapper/2812:29:1321
295729912526,64cyclictest0-21swapper/2812:10:1621
295729912526,64cyclictest0-21swapper/2810:44:4121
295729912525,67cyclictest0-21swapper/2810:29:5821
295569912528,64cyclictest0-21swapper/2610:47:0219
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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