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2026-09-23 - 21:02
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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 Sep 23, 2026 12:49:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
415099347150,3cyclictest151rcu_preempt10:28:2514
415099347150,3cyclictest151rcu_preempt10:28:2514
3273913320,325ptp4l0-21swapper/107:09:231
41509929156,38cyclictest143-21ksoftirqd/2110:03:1814
41509929156,38cyclictest143-21ksoftirqd/2110:03:1714
11842279271,6sleep30-21swapper/307:05:1923
420699263132,3cyclictest151rcu_preempt09:26:3621
4206991658,125cyclictest0-21swapper/2809:40:1521
4048991652,64cyclictest0-21swapper/812:20:1630
39929915623,85cyclictest0-21swapper/111:35:251
39929915129,87cyclictest0-21swapper/111:13:451
39929915129,87cyclictest0-21swapper/111:13:451
41429914914,120cyclictest0-21swapper/2010:15:2413
41429914914,120cyclictest0-21swapper/2010:15:2413
41659914517,91cyclictest0-21swapper/2310:06:3216
41659914517,91cyclictest0-21swapper/2310:06:3216
40899914432,101cyclictest0-21swapper/1311:07:345
40899914432,101cyclictest0-21swapper/1311:07:345
40489914454,57cyclictest0-21swapper/809:30:1730
42069914211,122cyclictest0-21swapper/2807:27:3421
41279914230,67cyclictest0-21swapper/1809:11:5610
41279914229,66cyclictest0-21swapper/1812:01:0610
40899914228,112cyclictest0-21swapper/1311:27:375
40489914230,70cyclictest0-21swapper/811:08:0330
40489914230,70cyclictest0-21swapper/811:08:0330
39929914248,76cyclictest0-21swapper/110:47:361
39929914248,76cyclictest0-21swapper/110:47:361
3992991420,84cyclictest0-21swapper/110:06:101
3992991420,84cyclictest0-21swapper/110:06:101
330891142134,6phc2sys0-21swapper/207:07:0912
41279914128,65cyclictest0-21swapper/1812:05:0710
39929914137,65cyclictest0-21swapper/112:15:461
41279914047,56cyclictest0-21swapper/1812:36:5510
41279914032,66cyclictest0-21swapper/1810:02:2710
41279914032,66cyclictest0-21swapper/1810:02:2710
41279914031,64cyclictest0-21swapper/1809:59:3110
41279914030,64cyclictest0-21swapper/1807:45:2310
41279914029,65cyclictest0-21swapper/1811:54:5810
41279914028,65cyclictest0-21swapper/1812:28:0610
40899914019,77cyclictest0-21swapper/1309:14:325
40489914046,60cyclictest0-21swapper/810:18:5430
40489914046,60cyclictest0-21swapper/810:18:5430
40489914030,64cyclictest0-21swapper/807:35:2430
41279913932,67cyclictest0-21swapper/1811:45:2010
41279913931,68cyclictest0-21swapper/1810:42:4710
41279913931,68cyclictest0-21swapper/1810:42:4710
41279913930,67cyclictest0-21swapper/1809:48:4910
41279913930,67cyclictest0-21swapper/1809:48:4910
41279913929,66cyclictest0-21swapper/1807:40:3210
41279913928,66cyclictest0-21swapper/1807:12:4510
40489913951,56cyclictest0-21swapper/809:00:2130
40489913948,61cyclictest0-21swapper/811:45:1430
40489913938,61cyclictest0-21swapper/812:25:1730
40489913929,67cyclictest0-21swapper/810:50:2730
40489913929,67cyclictest0-21swapper/810:50:2630
40489913929,65cyclictest0-21swapper/807:26:5030
414299138136,1cyclictest151rcu_preempt10:00:2613
414299138136,1cyclictest151rcu_preempt10:00:2513
41279913853,56cyclictest0-21swapper/1808:55:2310
41279913852,62cyclictest0-21swapper/1810:33:1110
41279913852,62cyclictest0-21swapper/1810:33:1110
41279913831,68cyclictest0-21swapper/1811:58:4210
41279913831,67cyclictest0-21swapper/1811:31:5810
41279913830,61cyclictest0-21swapper/1809:23:4210
40489913837,61cyclictest0-21swapper/811:15:1630
40489913828,65cyclictest0-21swapper/811:20:2030
40489913828,62cyclictest0-21swapper/809:05:1530
4189991370,84cyclictest0-21swapper/2609:19:3219
41279913749,59cyclictest0-21swapper/1809:02:1610
41279913731,64cyclictest0-21swapper/1809:34:2210
41279913730,67cyclictest0-21swapper/1811:27:4210
4055991370,85cyclictest0-21swapper/910:57:3731
4055991370,85cyclictest0-21swapper/910:57:3731
40489913749,64cyclictest0-21swapper/810:05:0130
40489913749,64cyclictest0-21swapper/810:05:0030
39929913727,69cyclictest0-21swapper/111:29:031
41279913643,58cyclictest0-21swapper/1811:21:4910
41279913630,61cyclictest0-21swapper/1812:10:2810
41279913628,62cyclictest0-21swapper/1810:17:4110
41279913628,62cyclictest0-21swapper/1810:17:4110
40489913652,65cyclictest0-21swapper/808:26:0930
40489913631,62cyclictest0-21swapper/808:20:1730
39929913675,59cyclictest0-21swapper/111:19:431
41279913527,61cyclictest0-21swapper/1810:20:2110
41279913527,61cyclictest0-21swapper/1810:20:2110
4089991350,83cyclictest0-21swapper/1310:54:295
4089991350,83cyclictest0-21swapper/1310:54:295
40489913530,63cyclictest0-21swapper/811:50:1930
40489913529,63cyclictest0-21swapper/808:44:1930
40489913522,67cyclictest0-21swapper/812:15:2630
3992991350,85cyclictest0-21swapper/111:32:171
4150991340,87cyclictest0-21swapper/2111:56:0414
41429913414,92cyclictest0-21swapper/2010:45:1813
41429913414,92cyclictest0-21swapper/2010:45:1813
41429913414,119cyclictest0-21swapper/2007:45:1313
41429913414,119cyclictest0-21swapper/2007:25:0013
41429913414,118cyclictest0-21swapper/2007:55:2313
414299134132,1cyclictest151rcu_preempt11:48:5613
41279913430,70cyclictest0-21swapper/1807:37:2110
40489913430,59cyclictest0-21swapper/811:35:1330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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