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2026-05-13 - 16:49
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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 May 13, 2026 12:49:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1667699314118,1cyclictest151rcu_preempt10:28:1314
3273912700,262ptp4l0-21swapper/107:08:421
330891259251,6phc2sys0-21swapper/207:06:0612
167169917234,91cyclictest0-21swapper/3011:14:1824
167169917234,91cyclictest0-21swapper/3011:14:1824
167169917234,124cyclictest0-21swapper/3009:42:1024
167169917033,136cyclictest0-21swapper/3011:49:3524
167169917033,136cyclictest0-21swapper/3011:49:3524
167169916946,71cyclictest0-21swapper/3011:20:1124
167169916946,71cyclictest0-21swapper/3011:20:1124
167169916534,100cyclictest0-21swapper/3011:28:1424
167169916534,100cyclictest0-21swapper/3011:28:1324
167169916432,78cyclictest0-21swapper/3009:21:0224
167169916429,84cyclictest0-21swapper/3010:50:1724
167169916429,84cyclictest0-21swapper/3010:50:1624
165569916024,99cyclictest0-21swapper/108:40:281
166149915128,67cyclictest0-21swapper/1010:35:372
165569915120,99cyclictest0-21swapper/109:29:061
165529915142,102cyclictest0-21swapper/008:10:180
16716991501,88cyclictest0-21swapper/3007:35:1424
165569914925,80cyclictest0-21swapper/110:49:481
165569914925,80cyclictest0-21swapper/110:49:471
165529914811,120cyclictest151rcu_preempt09:13:260
16556991470,83cyclictest0-21swapper/111:00:291
16556991470,83cyclictest0-21swapper/111:00:281
16552991460,86cyclictest0-21swapper/011:10:250
16552991460,86cyclictest0-21swapper/011:10:250
165569914455,62cyclictest0-21swapper/109:32:321
16556991440,84cyclictest0-21swapper/111:46:581
16556991440,84cyclictest0-21swapper/111:46:581
16556991430,85cyclictest0-21swapper/111:40:011
16556991430,85cyclictest0-21swapper/111:40:011
165569914252,55cyclictest0-21swapper/109:46:111
16556991420,86cyclictest0-21swapper/109:23:131
16556991410,88cyclictest0-21swapper/112:09:251
16556991410,86cyclictest0-21swapper/111:34:581
16556991410,86cyclictest0-21swapper/111:34:571
16556991410,83cyclictest0-21swapper/110:04:221
16556991410,83cyclictest0-21swapper/107:26:111
16556991400,85cyclictest0-21swapper/112:00:201
16556991400,83cyclictest0-21swapper/110:51:241
16556991400,83cyclictest0-21swapper/110:51:231
16556991400,83cyclictest0-21swapper/108:55:251
16556991400,81cyclictest0-21swapper/108:25:311
165529914031,67cyclictest0-21swapper/010:45:180
165529914031,67cyclictest0-21swapper/010:45:170
165529914030,89cyclictest0-21swapper/010:55:020
165529914030,89cyclictest0-21swapper/010:55:020
167169913950,59cyclictest0-21swapper/3011:34:4024
167169913950,59cyclictest0-21swapper/3011:34:4024
167169913929,58cyclictest0-21swapper/3008:55:0824
16630991399,125cyclictest0-21swapper/1212:00:514
16556991390,81cyclictest0-21swapper/109:54:271
16724991380,87cyclictest0-21swapper/3110:36:2425
165569913850,61cyclictest0-21swapper/107:33:401
16556991380,83cyclictest0-21swapper/112:26:001
16556991380,82cyclictest0-21swapper/109:55:021
165569913738,70cyclictest0-21swapper/110:30:331
16556991370,83cyclictest0-21swapper/111:13:501
16556991370,83cyclictest0-21swapper/111:13:501
16711991367,77cyclictest0-21swapper/2909:08:4322
166149913627,63cyclictest0-21swapper/1007:55:122
165569913641,62cyclictest0-21swapper/112:37:131
165569913633,59cyclictest0-21swapper/107:16:181
16556991360,83cyclictest0-21swapper/108:36:441
16556991360,81cyclictest0-21swapper/110:07:351
16556991360,80cyclictest0-21swapper/109:00:131
16556991360,80cyclictest0-21swapper/107:10:101
167169913532,54cyclictest0-21swapper/3009:50:5724
165569913530,70cyclictest0-21swapper/110:35:541
165569913529,66cyclictest0-21swapper/110:15:031
165569913529,66cyclictest0-21swapper/110:15:031
165569913529,63cyclictest0-21swapper/112:22:471
165569913456,63cyclictest0-21swapper/107:35:491
165569913430,64cyclictest0-21swapper/109:36:021
165569913430,54cyclictest0-21swapper/108:05:121
16556991340,81cyclictest0-21swapper/108:50:041
16556991340,80cyclictest0-21swapper/111:35:141
16556991340,80cyclictest0-21swapper/111:35:131
166309913310,92cyclictest0-21swapper/1209:10:214
165569913331,74cyclictest0-21swapper/112:11:531
165569913329,67cyclictest0-21swapper/110:40:111
165569913329,67cyclictest0-21swapper/110:40:101
165569913325,64cyclictest0-21swapper/109:05:351
16556991330,80cyclictest0-21swapper/109:18:241
166309913210,121cyclictest3828-21phc2sys09:05:174
166309913210,121cyclictest0-21swapper/1209:40:174
16556991320,76cyclictest0-21swapper/111:52:191
167169913129,73cyclictest0-21swapper/3009:36:3124
167119913134,91cyclictest0-21swapper/2911:07:0922
167119913134,91cyclictest0-21swapper/2911:07:0822
165629913149,58cyclictest0-21swapper/209:29:3812
165629913127,71cyclictest0-21swapper/212:15:1912
165629913125,60cyclictest0-21swapper/208:25:4812
165569913127,61cyclictest0-21swapper/111:26:091
165569913127,61cyclictest0-21swapper/111:26:081
16556991310,78cyclictest0-21swapper/110:10:141
16556991310,78cyclictest0-21swapper/107:56:071
167169913058,64cyclictest0-21swapper/3010:05:5524
167169913027,67cyclictest0-21swapper/3012:29:4224
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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