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2026-06-10 - 16:30
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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 Wed Jun 10, 2026 12:49:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2165499324127,1cyclictest151rcu_preempt11:08:3421
3273912790,272ptp4l0-21swapper/107:09:501
330891188179,7phc2sys0-21swapper/207:05:2312
21513991760,172cyclictest40-21ksoftirqd/409:14:3926
216229916416,128cyclictest0-21swapper/2209:58:2715
216229916416,128cyclictest0-21swapper/2209:58:2715
216229915816,107cyclictest0-21swapper/2211:50:1115
216229915616,84cyclictest0-21swapper/2210:37:1315
216089915680,75cyclictest131-21ksoftirqd/1910:16:0311
216089915680,75cyclictest131-21ksoftirqd/1910:16:0211
215659915628,68cyclictest0-21swapper/1111:55:143
216089915412,86cyclictest0-21swapper/1910:02:4211
216089915412,86cyclictest0-21swapper/1910:02:4111
21604991535,114cyclictest0-21swapper/1810:48:0510
216309915013,99cyclictest151rcu_preempt07:50:0217
215139915018,118cyclictest0-21swapper/407:25:1226
216829914923,80cyclictest0-21swapper/3109:15:1825
216829914923,80cyclictest0-21swapper/3109:15:1825
216829914923,125cyclictest0-21swapper/3109:30:1625
216829914923,125cyclictest0-21swapper/3109:30:1625
216309914932,93cyclictest0-21swapper/2412:36:4317
21604991495,118cyclictest0-21swapper/1807:27:4110
216089914724,122cyclictest151rcu_preempt12:03:2811
21513991470,103cyclictest40-21ksoftirqd/409:40:1926
21513991470,103cyclictest40-21ksoftirqd/409:40:1826
216309914630,110cyclictest0-21swapper/2409:36:5217
216309914630,110cyclictest0-21swapper/2409:36:5217
21604991465,88cyclictest0-21swapper/1809:55:1210
21604991465,88cyclictest0-21swapper/1809:55:1110
21588991460,89cyclictest0-21swapper/1409:39:386
21588991460,89cyclictest0-21swapper/1409:39:376
216229914516,76cyclictest0-21swapper/2212:03:3215
216089914512,85cyclictest0-21swapper/1909:57:2111
216089914512,85cyclictest0-21swapper/1909:57:2011
216829914420,86cyclictest0-21swapper/3112:37:5225
216309914427,80cyclictest0-21swapper/2411:23:3517
21617991440,87cyclictest0-21swapper/2110:22:3014
216829914323,111cyclictest0-21swapper/3112:01:3225
21630991420,86cyclictest0-21swapper/2408:27:5817
216089914222,92cyclictest0-21swapper/1909:18:5111
216089914222,92cyclictest0-21swapper/1909:18:5111
214969914270,71cyclictest0-21swapper/112:37:231
216179914120,88cyclictest0-21swapper/2108:15:1814
216089914119,50cyclictest0-21swapper/1907:10:2111
216309914024,78cyclictest0-21swapper/2410:44:5217
21630991400,86cyclictest0-21swapper/2408:10:1817
216089914020,95cyclictest0-21swapper/1912:37:4011
21604991405,98cyclictest0-21swapper/1809:43:2610
21604991405,98cyclictest0-21swapper/1809:43:2510
215969914031,63cyclictest0-21swapper/1612:10:118
216229913916,70cyclictest0-21swapper/2211:35:1115
21604991395,79cyclictest0-21swapper/1810:20:1810
216309913849,35cyclictest0-21swapper/2412:10:1917
216309913724,80cyclictest0-21swapper/2409:17:4017
216309913724,80cyclictest0-21swapper/2409:17:4017
21581991360,85cyclictest0-21swapper/1309:10:125
21630991350,83cyclictest0-21swapper/2411:19:3517
216309913446,57cyclictest0-21swapper/2409:33:5517
216309913446,57cyclictest0-21swapper/2409:33:5417
215139913421,109cyclictest151rcu_preempt09:05:3426
216309913348,56cyclictest0-21swapper/2409:41:1217
216309913348,56cyclictest0-21swapper/2409:41:1117
216309913347,60cyclictest0-21swapper/2410:22:3517
216309913330,62cyclictest0-21swapper/2412:21:4617
21617991330,82cyclictest0-21swapper/2112:22:4514
216089913324,107cyclictest0-21swapper/1911:14:1811
215139913365,47cyclictest0-21swapper/410:16:0626
215139913365,47cyclictest0-21swapper/410:16:0626
215139913358,47cyclictest0-21swapper/407:43:4126
215139913322,73cyclictest0-21swapper/409:32:1026
215139913322,73cyclictest0-21swapper/409:32:1026
21513991330,84cyclictest0-21swapper/410:33:1426
216309913249,59cyclictest0-21swapper/2410:10:1817
216309913249,59cyclictest0-21swapper/2410:10:1817
215969913219,53cyclictest0-21swapper/1611:25:178
215889913227,88cyclictest0-21swapper/1411:27:346
216309913127,67cyclictest0-21swapper/2412:09:3117
216229913116,77cyclictest0-21swapper/2210:10:1415
216229913116,77cyclictest0-21swapper/2210:10:1315
21596991310,81cyclictest0-21swapper/1611:05:388
215889913127,69cyclictest0-21swapper/1412:30:396
215819913147,58cyclictest0-21swapper/1312:39:115
21581991310,75cyclictest0-21swapper/1307:30:175
216309913024,65cyclictest0-21swapper/2410:47:4217
216089913044,54cyclictest0-21swapper/1912:06:0811
216089913030,66cyclictest0-21swapper/1911:26:3511
216089913027,68cyclictest0-21swapper/1908:25:2311
215819913037,60cyclictest0-21swapper/1310:05:205
215819913037,60cyclictest0-21swapper/1310:05:205
215139913017,85cyclictest0-21swapper/409:15:1226
215139913017,85cyclictest0-21swapper/409:15:1226
216309912945,57cyclictest0-21swapper/2412:18:0117
216309912935,62cyclictest0-21swapper/2411:33:2417
216309912928,68cyclictest0-21swapper/2409:45:3117
216309912928,68cyclictest0-21swapper/2409:45:3117
216309912923,63cyclictest0-21swapper/2410:01:2917
216309912923,63cyclictest0-21swapper/2410:01:2917
216089912946,56cyclictest0-21swapper/1909:29:3311
216089912946,56cyclictest0-21swapper/1909:29:3211
216089912943,50cyclictest0-21swapper/1910:27:1611
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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