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2026-08-31 - 23:34
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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 Mon Aug 31, 2026 12:49:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912620,253ptp4l0-21swapper/107:08:471
3082992003,194cyclictest151rcu_preempt12:27:2922
3082992003,194cyclictest151rcu_preempt12:27:2922
30549915822,34cyclictest0-21swapper/2509:15:4518
30549915622,130cyclictest0-21swapper/2511:48:3718
30549915622,130cyclictest0-21swapper/2511:48:3618
30549915523,15cyclictest0-21swapper/2511:31:3118
30549915523,15cyclictest0-21swapper/2511:31:3118
30549915422,118cyclictest0-21swapper/2510:10:0118
30549915322,96cyclictest0-21swapper/2510:00:2418
30549915223,87cyclictest0-21swapper/2511:55:3418
30549915223,87cyclictest0-21swapper/2511:55:3318
30549915114,134cyclictest0-21swapper/2511:20:1218
30549915114,134cyclictest0-21swapper/2511:20:1118
2984991500,86cyclictest0-21swapper/1108:25:173
15082149141,6sleep300-21swapper/3007:05:4424
2967991450,83cyclictest0-21swapper/708:10:1529
30829914325,116cyclictest0-21swapper/2911:20:5322
30829914325,116cyclictest0-21swapper/2911:20:5322
3007991430,89cyclictest0-21swapper/1609:09:598
2940991430,104cyclictest0-21swapper/111:14:141
30829914225,116cyclictest0-21swapper/2912:33:0222
30829914225,116cyclictest0-21swapper/2912:33:0222
3007991420,86cyclictest0-21swapper/1610:33:588
2940991420,86cyclictest0-21swapper/111:15:041
2940991420,86cyclictest0-21swapper/111:15:041
30499914126,48cyclictest0-21swapper/2409:15:1517
30079914121,98cyclictest0-21swapper/1609:57:218
2984991410,85cyclictest0-21swapper/1112:22:033
2984991410,85cyclictest0-21swapper/1112:22:023
30369914032,107cyclictest0-21swapper/2110:06:2714
30079914021,118cyclictest0-21swapper/1612:15:028
30079914021,118cyclictest0-21swapper/1612:15:028
30829913925,72cyclictest0-21swapper/2911:56:4222
30829913925,72cyclictest0-21swapper/2911:56:4222
30369913931,106cyclictest0-21swapper/2109:25:5014
29849913928,70cyclictest0-21swapper/1107:17:303
30369913831,106cyclictest0-21swapper/2110:23:3414
30229913857,80cyclictest0-21swapper/1810:50:1410
305499137135,1cyclictest167-21ksoftirqd/2509:22:1018
30079913720,46cyclictest2930-21cyclictest11:04:288
29849913729,70cyclictest0-21swapper/1112:18:183
29849913729,70cyclictest0-21swapper/1112:18:183
29409913713,72cyclictest0-21swapper/110:36:361
2333221370,2sleep180-21swapper/1810:12:0110
30369913631,54cyclictest0-21swapper/2109:52:3414
30079913647,59cyclictest0-21swapper/1609:10:018
29849913654,59cyclictest0-21swapper/1109:50:153
29849913650,58cyclictest0-21swapper/1110:46:553
29849913643,60cyclictest0-21swapper/1111:08:183
29849913623,73cyclictest0-21swapper/1110:15:553
3096991355,79cyclictest0-21swapper/3107:10:1625
30079913520,69cyclictest0-21swapper/1609:48:378
29849913528,64cyclictest0-21swapper/1112:25:153
29849913528,64cyclictest0-21swapper/1112:25:143
30829913419,82cyclictest0-21swapper/2909:35:2222
30369913426,90cyclictest0-21swapper/2110:25:1014
30369913426,90cyclictest0-21swapper/2110:25:1014
29849913432,74cyclictest0-21swapper/1110:34:373
29849913431,79cyclictest0-21swapper/1112:00:133
29849913431,79cyclictest0-21swapper/1112:00:133
29849913428,72cyclictest0-21swapper/1110:03:053
29849913426,65cyclictest0-21swapper/1110:14:193
30369913326,77cyclictest0-21swapper/2109:45:2414
29849913352,65cyclictest0-21swapper/1109:20:203
29849913341,55cyclictest0-21swapper/1111:30:443
29849913341,55cyclictest0-21swapper/1111:30:443
29849913338,68cyclictest0-21swapper/1109:35:163
29849913330,69cyclictest0-21swapper/1108:11:293
30549913212,117cyclictest151rcu_preempt11:35:1518
30549913212,117cyclictest151rcu_preempt11:35:1518
3054991320,84cyclictest0-21swapper/2512:30:5018
3054991320,84cyclictest0-21swapper/2512:30:4918
30369913223,70cyclictest0-21swapper/2111:05:1514
29849913231,76cyclictest0-21swapper/1110:42:063
29849913231,76cyclictest0-21swapper/1110:42:053
29849913229,79cyclictest0-21swapper/1112:11:533
29849913229,79cyclictest0-21swapper/1112:11:533
29849913226,61cyclictest0-21swapper/1110:35:083
30079913128,66cyclictest0-21swapper/1612:27:498
30079913128,66cyclictest0-21swapper/1612:27:488
29849913135,62cyclictest0-21swapper/1111:29:403
29849913135,62cyclictest0-21swapper/1111:29:393
29849913126,77cyclictest0-21swapper/1108:39:423
29679913145,54cyclictest0-21swapper/711:41:3129
29679913145,54cyclictest0-21swapper/711:41:3029
29679913127,62cyclictest0-21swapper/710:35:3629
2940991310,79cyclictest0-21swapper/111:59:261
2940991310,79cyclictest0-21swapper/111:59:251
30549913022,65cyclictest0-21swapper/2512:35:0618
30079913043,59cyclictest0-21swapper/1609:25:478
30079913024,80cyclictest0-21swapper/1609:42:098
30079913024,63cyclictest0-21swapper/1607:31:448
29849913029,68cyclictest0-21swapper/1107:45:133
29849913025,64cyclictest0-21swapper/1108:50:243
2984991300,77cyclictest0-21swapper/1111:12:343
29679913041,62cyclictest0-21swapper/712:30:1829
29679913041,62cyclictest0-21swapper/712:30:1729
30829912913,95cyclictest0-21swapper/2908:50:4122
30549912922,71cyclictest0-21swapper/2512:00:2218
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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