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2026-06-23 - 19:33
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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 Jun 23, 2026 12:49:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1996899301161,1cyclictest151rcu_preempt11:35:5227
3273912730,266ptp4l0-21swapper/107:08:331
330891180171,6phc2sys0-21swapper/207:05:1312
199659916541,122cyclictest0-21swapper/408:35:1526
199659916541,122cyclictest0-21swapper/408:35:1526
199659915834,123cyclictest0-21swapper/411:10:1626
19985991578,96cyclictest0-21swapper/909:15:2431
200049915136,110cyclictest0-21swapper/1410:54:056
200429915048,102cyclictest0-21swapper/2312:07:5716
2001299149114,1cyclictest151rcu_preempt11:46:158
200429914645,68cyclictest0-21swapper/2311:56:4416
200049914347,62cyclictest0-21swapper/1408:18:496
200049914347,62cyclictest0-21swapper/1408:18:496
19965991430,82cyclictest0-21swapper/411:25:1326
200259914249,53cyclictest0-21swapper/1910:35:2511
20000991400,88cyclictest0-21swapper/1309:34:555
19965991400,83cyclictest0-21swapper/411:40:1026
200259913942,57cyclictest0-21swapper/1910:40:4611
20022991391,84cyclictest0-21swapper/1809:21:3910
20022991391,84cyclictest0-21swapper/1809:21:3910
199689913925,103cyclictest0-21swapper/512:05:1727
20000991376,81cyclictest0-21swapper/1307:23:285
199929913711,86cyclictest82-21ksoftirqd/1108:55:213
199929913711,86cyclictest82-21ksoftirqd/1108:55:213
184912137129,6sleep140-21swapper/1407:05:366
200259913632,60cyclictest0-21swapper/1911:03:1311
200049913529,64cyclictest0-21swapper/1409:50:256
19988991357,125cyclictest151rcu_preempt08:01:222
200259913426,67cyclictest0-21swapper/1909:30:1311
200259913426,65cyclictest0-21swapper/1912:06:1611
200429913331,89cyclictest0-21swapper/2309:30:4916
199689913332,100cyclictest0-21swapper/509:41:1227
199689913130,100cyclictest0-21swapper/509:51:2327
200429913028,80cyclictest0-21swapper/2309:58:3716
200399913045,57cyclictest0-21swapper/2212:26:3815
200399913041,54cyclictest0-21swapper/2212:20:4615
199689913057,8cyclictest0-21swapper/511:41:2827
199659913031,45cyclictest0-21swapper/408:10:2426
199659913031,45cyclictest0-21swapper/408:10:2426
199659913025,65cyclictest0-21swapper/409:05:1126
199659913025,65cyclictest0-21swapper/409:05:1026
199659913014,67cyclictest0-21swapper/409:27:3826
200259912928,57cyclictest0-21swapper/1910:46:3911
200229912948,58cyclictest0-21swapper/1811:58:4710
200229912944,55cyclictest0-21swapper/1811:21:5410
200229912938,66cyclictest0-21swapper/1810:34:5210
200009912944,55cyclictest0-21swapper/1308:40:255
200009912944,55cyclictest0-21swapper/1308:40:255
199659912943,54cyclictest0-21swapper/412:26:0826
199659912941,60cyclictest0-21swapper/412:10:0626
20042991287,73cyclictest0-21swapper/2310:06:0516
200429912826,71cyclictest0-21swapper/2310:55:1716
200399912827,50cyclictest0-21swapper/2209:36:0915
200259912827,57cyclictest0-21swapper/1907:10:1411
200229912843,55cyclictest0-21swapper/1810:37:0010
200229912835,59cyclictest0-21swapper/1811:13:5310
200229912831,63cyclictest0-21swapper/1811:45:2510
199659912828,69cyclictest0-21swapper/411:30:0126
199659912828,65cyclictest0-21swapper/411:37:0526
199659912825,66cyclictest0-21swapper/409:10:1326
200399912728,64cyclictest0-21swapper/2208:40:3415
200399912728,64cyclictest0-21swapper/2208:40:3415
200229912752,54cyclictest0-21swapper/1811:51:5010
200229912740,64cyclictest0-21swapper/1807:50:1610
200229912739,58cyclictest0-21swapper/1807:21:5610
200229912718,58cyclictest0-21swapper/1810:45:3310
200049912726,64cyclictest0-21swapper/1411:08:286
200009912738,61cyclictest0-21swapper/1307:17:055
199659912724,63cyclictest0-21swapper/412:05:0226
199659912722,65cyclictest0-21swapper/411:56:4526
200399912637,57cyclictest0-21swapper/2211:11:4915
200399912626,67cyclictest0-21swapper/2211:34:1515
200399912623,62cyclictest0-21swapper/2212:35:1315
200399912623,62cyclictest0-21swapper/2212:35:1215
200399912623,59cyclictest0-21swapper/2210:46:4215
200259912627,62cyclictest0-21swapper/1912:39:2511
200259912627,62cyclictest0-21swapper/1912:39:2511
200229912632,68cyclictest0-21swapper/1811:17:0710
200229912627,65cyclictest0-21swapper/1810:19:2210
200229912627,64cyclictest0-21swapper/1809:25:2310
200229912624,64cyclictest0-21swapper/1812:16:2510
200229912624,64cyclictest0-21swapper/1812:16:2510
200049912627,59cyclictest0-21swapper/1412:12:376
200009912647,57cyclictest0-21swapper/1309:01:475
200009912647,57cyclictest0-21swapper/1309:01:475
200009912638,59cyclictest0-21swapper/1312:27:345
200009912627,48cyclictest0-21swapper/1311:34:395
200009912626,65cyclictest0-21swapper/1310:35:515
200009912625,57cyclictest0-21swapper/1307:25:045
200009912622,65cyclictest0-21swapper/1311:13:065
19988991269,114cyclictest151rcu_preempt09:24:432
19988991269,114cyclictest151rcu_preempt09:24:432
1996899126125,0cyclictest46-21ksoftirqd/512:34:5527
1996899126125,0cyclictest46-21ksoftirqd/512:34:5527
199659912629,73cyclictest0-21swapper/412:30:1326
199659912629,73cyclictest0-21swapper/412:30:1326
199659912629,66cyclictest0-21swapper/410:35:4526
199659912627,67cyclictest0-21swapper/411:03:5026
20042991255,70cyclictest0-21swapper/2311:12:2216
200399912532,62cyclictest0-21swapper/2211:21:5815
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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