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2025-11-18 - 20:52
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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 Nov 18, 2025 12:49:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
329891285277,6phc2sys0-21swapper/207:08:0112
197639927783,2cyclictest151rcu_preempt11:59:2926
2482912600,247ptp4l0-21swapper/107:05:171
197879924953,2cyclictest151rcu_preempt09:20:1630
197879924853,1cyclictest151rcu_preempt10:31:1930
19779991671,128cyclictest0-21swapper/710:05:0629
19779991651,163cyclictest0-21swapper/710:20:1929
197379916111,149cyclictest151rcu_preempt11:44:310
198829915762,94cyclictest0-21swapper/2210:23:4715
198129915520,59cyclictest88-21ksoftirqd/1211:02:394
198129915425,128cyclictest88-21ksoftirqd/1212:27:244
198129915411,141cyclictest151rcu_preempt12:37:334
19737991510,89cyclictest0-21swapper/009:56:250
199079915040,74cyclictest151rcu_preempt08:27:5319
199079915040,74cyclictest151rcu_preempt08:27:5219
19900991490,86cyclictest0-21swapper/2511:10:5018
19907991459,131cyclictest151rcu_preempt08:42:5019
19907991459,131cyclictest151rcu_preempt08:42:4919
198549914510,133cyclictest0-21swapper/1810:20:3010
19779991441,87cyclictest0-21swapper/709:25:1629
19907991430,84cyclictest0-21swapper/2607:55:1719
19907991430,84cyclictest0-21swapper/2607:55:1719
19737991430,86cyclictest0-21swapper/007:49:140
19737991430,86cyclictest0-21swapper/007:49:130
19742991420,87cyclictest0-21swapper/110:44:481
198549914110,74cyclictest0-21swapper/1811:59:5410
199009914051,56cyclictest0-21swapper/2512:38:3018
199009914030,66cyclictest0-21swapper/2511:40:4718
199009914027,82cyclictest0-21swapper/2512:11:1518
19900991400,82cyclictest0-21swapper/2510:17:2518
19900991400,80cyclictest0-21swapper/2512:26:1318
19900991400,80cyclictest0-21swapper/2511:37:0318
197429914051,61cyclictest0-21swapper/111:14:121
19742991400,86cyclictest0-21swapper/111:44:391
19742991400,86cyclictest0-21swapper/109:18:451
199009913948,57cyclictest0-21swapper/2510:39:2018
19737991391,85cyclictest0-21swapper/010:04:580
199009913848,60cyclictest0-21swapper/2510:24:2118
199009913831,73cyclictest0-21swapper/2511:31:1018
19900991380,79cyclictest0-21swapper/2509:50:0918
198549913810,93cyclictest0-21swapper/1810:07:0810
19812991380,81cyclictest0-21swapper/1211:30:124
197429913826,65cyclictest0-21swapper/112:22:521
199009913731,67cyclictest0-21swapper/2510:09:2418
19900991370,83cyclictest0-21swapper/2510:45:1218
198549913710,76cyclictest0-21swapper/1809:44:1010
197429913755,59cyclictest0-21swapper/108:06:401
197429913755,59cyclictest0-21swapper/108:06:401
199009913646,56cyclictest0-21swapper/2510:10:2818
199009913628,69cyclictest0-21swapper/2511:08:2818
19900991360,83cyclictest0-21swapper/2511:26:2118
19900991360,79cyclictest0-21swapper/2511:45:0418
197429913650,57cyclictest0-21swapper/110:07:561
19900991350,83cyclictest0-21swapper/2509:21:5018
19900991350,79cyclictest0-21swapper/2507:55:1618
19900991350,79cyclictest0-21swapper/2507:55:1518
19812991350,84cyclictest0-21swapper/1209:50:184
197429913546,63cyclictest0-21swapper/109:57:001
197429913540,63cyclictest0-21swapper/109:41:431
199009913439,67cyclictest0-21swapper/2511:21:3318
199009913436,68cyclictest0-21swapper/2510:59:0618
199009913432,67cyclictest0-21swapper/2509:19:0918
199009913428,67cyclictest0-21swapper/2510:25:2618
199009913427,68cyclictest0-21swapper/2509:13:1618
198549913410,71cyclictest0-21swapper/1810:16:4610
198129913431,102cyclictest0-21swapper/1211:48:044
198129913417,17cyclictest0-21swapper/1212:20:264
197429913431,70cyclictest0-21swapper/110:55:161
199009913345,55cyclictest0-21swapper/2509:49:3718
199009913329,77cyclictest0-21swapper/2510:00:5118
199009913316,78cyclictest0-21swapper/2509:25:3318
19900991330,81cyclictest0-21swapper/2512:32:0618
19900991330,81cyclictest0-21swapper/2512:01:0618
19900991330,80cyclictest0-21swapper/2511:55:1318
19900991330,76cyclictest0-21swapper/2508:19:1918
19900991330,76cyclictest0-21swapper/2508:19:1918
197429913328,68cyclictest0-21swapper/111:05:071
197379913358,52cyclictest25204-21taskset07:36:570
197379913358,52cyclictest25204-21taskset07:36:560
197379913321,51cyclictest0-21swapper/011:31:090
199009913228,66cyclictest0-21swapper/2508:35:2118
199009913228,66cyclictest0-21swapper/2508:35:2118
199009913223,69cyclictest0-21swapper/2511:01:1418
199009913220,69cyclictest0-21swapper/2508:23:0318
199009913220,69cyclictest0-21swapper/2508:23:0318
19900991320,79cyclictest0-21swapper/2512:23:1618
19900991320,79cyclictest0-21swapper/2511:51:2918
19900991320,78cyclictest0-21swapper/2509:05:1618
19900991320,70cyclictest0-21swapper/2508:30:3218
19900991320,70cyclictest0-21swapper/2508:30:3118
197429913247,62cyclictest0-21swapper/111:27:201
197429913230,65cyclictest0-21swapper/108:48:501
197429913230,65cyclictest0-21swapper/108:48:501
197429913229,69cyclictest0-21swapper/111:36:071
197429913228,69cyclictest0-21swapper/109:32:431
197429913228,68cyclictest0-21swapper/111:33:111
199009913130,64cyclictest0-21swapper/2509:44:4918
199009913118,80cyclictest0-21swapper/2510:42:3118
19900991310,80cyclictest0-21swapper/2510:51:3618
19900991310,75cyclictest0-21swapper/2509:37:1918
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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