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2026-08-30 - 16:32
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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
Characteristics of the 100 highest latencies:
System rackdslot1.osadl.org (updated Sun Aug 30, 2026 12:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3131421690,7sleep12641399cyclictest08:29:131
981721590,6sleep22641499cyclictest12:20:172
981721590,6sleep22641499cyclictest12:20:172
2172621480,4sleep32641599cyclictest09:15:293
2641499730,31cyclictest1633-21taskset12:00:402
2641499710,30cyclictest8659-21taskset11:08:332
2641499691,31cyclictest15684-21chrt11:21:332
2641499690,32cyclictest15699-21chrt12:32:342
2641499690,31cyclictest14746-21chrt07:54:402
2641499681,28cyclictest28721-21chrt07:15:082
2641499680,31cyclictest26694-21taskset09:29:402
2641499680,29cyclictest3855-21chrt10:56:052
2641499670,35cyclictest5903-21taskset08:44:272
2641499670,32cyclictest21847-21taskset09:16:522
2641499670,31cyclictest12665-21taskset10:05:392
2641499670,22cyclictest3450-21date07:30:002
2641499660,30cyclictest1502-21taskset08:35:082
2641499660,26cyclictest6303-21taskset11:02:472
2641499660,26cyclictest1762-21chrt10:54:292
2641499651,27cyclictest13465-21chrt12:29:052
2641499650,31cyclictest19564-21taskset09:12:032
2641499650,31cyclictest1124-21chrt08:33:272
2641499650,30cyclictest7880-21chrt08:45:272
2641499650,30cyclictest24443-21taskset10:30:422
2641499650,29cyclictest31368-21taskset08:29:542
2641499650,29cyclictest29514-21chrt11:51:542
2641499650,27cyclictest31239-21taskset09:39:112
2641499650,27cyclictest31239-21taskset09:39:112
48722640,6sleep12641399cyclictest12:10:141
2641499644,21cyclictest0-21swapper/210:44:092
2641499640,31cyclictest26455-21chrt08:18:522
2641499640,30cyclictest22752-21taskset11:38:542
2641499640,26cyclictest22223-21taskset10:26:412
284412630,4sleep10-21swapper/110:40:201
2641499630,28cyclictest17496-21taskset10:18:012
2641499630,26cyclictest28678-21taskset08:22:402
2641499630,26cyclictest19202-21chrt08:02:022
162652630,4sleep20-21swapper/207:55:242
2641499620,34cyclictest12732-21chrt08:58:472
2641499620,30cyclictest24065-21chrt09:20:332
2641499620,30cyclictest12243-21taskset07:47:062
2641499620,29cyclictest31724-21chrt11:55:472
2641499620,29cyclictest28446-21chrt07:14:282
2641499620,29cyclictest27383-21chrt11:49:012
2641499610,30cyclictest6277-21taskset12:10:312
2641499610,29cyclictest20036-21taskset10:23:072
2641499610,26cyclictest17904-21taskset12:36:232
2641499610,26cyclictest10746-21chrt11:10:502
2641499610,26cyclictest10746-21chrt11:10:502
2641499610,20cyclictest212-21systemd-journal10:04:302
2641499600,30cyclictest3687-21chrt09:48:422
2641499600,30cyclictest10426-21taskset08:53:402
134491600,4ptp4l0-21swapper/011:25:170
2641499590,26cyclictest25014-21taskset10:35:032
2641499590,26cyclictest15037-21taskset09:02:562
2641499590,26cyclictest1070-21taskset09:40:352
2641499590,25cyclictest5235-21chrt07:30:492
134491590,3ptp4l9-21ksoftirqd/008:35:190
134491590,3ptp4l0-21swapper/012:15:140
2641499580,26cyclictest17211-21chrt09:06:172
2641499570,25cyclictest8248-21runrttasks09:58:162
134491570,4ptp4l8448-21diskstats07:40:173
134491570,4ptp4l0-21swapper/310:40:013
134491570,4ptp4l0-21swapper/009:09:160
267902560,5sleep30-21swapper/307:10:163
2641499560,26cyclictest16189-21runrttasks11:25:042
134491560,4ptp4l0-21swapper/110:01:391
134491560,4ptp4l0-21swapper/109:14:551
134491560,3ptp4l0-21swapper/309:57:383
134491560,3ptp4l0-21swapper/308:42:003
134491560,3ptp4l0-21swapper/011:35:320
134491550,5ptp4l0-21swapper/309:47:483
134491550,4ptp4l0-21swapper/309:43:583
134491550,4ptp4l0-21swapper/008:57:570
134491550,3ptp4l19703-21grep08:05:130
134491540,5ptp4l0-21swapper/107:08:241
134491540,5ptp4l0-21swapper/008:00:270
134491540,4ptp4l0-21swapper/308:53:053
134491540,4ptp4l0-21swapper/108:43:291
134491540,3ptp4l0-21swapper/011:44:150
134491540,3ptp4l0-21swapper/011:44:150
134491530,4ptp4l0-21swapper/312:28:443
134491530,3ptp4l0-21swapper/309:10:233
134491530,3ptp4l0-21swapper/209:30:012
134491530,2ptp4l11339-21kworker/2:012:05:192
134491520,4ptp4l0-21swapper/309:37:423
134491520,4ptp4l0-21swapper/309:37:423
134491520,4ptp4l0-21swapper/107:36:221
134491510,5ptp4l2641299cyclictest10:01:400
134491510,4ptp4l0-21swapper/109:36:291
134491510,4ptp4l0-21swapper/109:36:291
2641499500,21cyclictest1301-21snmpd07:40:232
134491500,6ptp4l0-21swapper/307:53:393
134491500,4ptp4l0-21swapper/009:34:490
134491490,7ptp4l25099-21ls07:05:220
134491490,4ptp4l0-21swapper/312:06:293
134491490,4ptp4l0-21swapper/310:49:243
134491490,4ptp4l0-21swapper/011:30:310
134491490,4ptp4l0-21swapper/007:32:370
134491490,4ptp4l0-21swapper/007:26:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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