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2025-11-28 - 23:11
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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 50 highest latencies:
System rackdslot1.osadl.org (updated Fri Nov 28, 2025 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2326721810,7sleep13103599cyclictest09:10:131
528521490,5sleep13103599cyclictest08:30:291
110632750,5sleep30-21swapper/312:10:213
2847191680,4ptp4l24244-21apt-get08:05:020
2847191630,4ptp4l0-21swapper/007:20:240
2847191610,20ptp4l940-21iostat10:40:160
2847191600,4ptp4l0-21swapper/107:15:211
2847191600,3ptp4l0-21swapper/308:21:063
109762600,3sleep20-21swapper/207:35:192
2847191590,4ptp4l0-21swapper/009:20:390
2847191590,3ptp4l0-21swapper/109:55:251
2847191580,3ptp4l0-21swapper/210:44:022
2847191580,3ptp4l0-21swapper/008:52:410
2847191570,4ptp4l0-21swapper/112:30:431
2847191570,4ptp4l0-21swapper/108:58:311
2847191570,4ptp4l0-21swapper/009:10:010
2847191570,3ptp4l0-21swapper/311:56:423
2847191560,5ptp4l0-21swapper/209:03:122
2847191560,4ptp4l0-21swapper/209:36:192
2847191560,4ptp4l0-21swapper/108:03:451
2847191560,4ptp4l0-21swapper/107:11:541
2847191560,3ptp4l0-21swapper/108:24:271
2847191550,4ptp4l0-21swapper/110:02:281
2847191550,4ptp4l0-21swapper/108:41:191
2847191540,4ptp4l0-21swapper/209:32:202
2847191540,4ptp4l0-21swapper/111:24:211
2847191540,4ptp4l0-21swapper/109:08:391
2847191540,3ptp4l0-21swapper/309:36:043
2847191540,3ptp4l0-21swapper/107:55:231
130832540,4sleep00-21swapper/009:55:290
89542530,4sleep08958-21timerwakeupswit10:55:270
2847191530,9ptp4l0-21swapper/010:52:560
2847191530,4ptp4l0-21swapper/209:43:312
2847191530,4ptp4l0-21swapper/111:36:011
2847191530,4ptp4l0-21swapper/108:39:241
2847191530,4ptp4l0-21swapper/012:20:210
2847191520,4ptp4l0-21swapper/311:42:153
2847191520,4ptp4l0-21swapper/211:27:552
2847191520,4ptp4l0-21swapper/210:00:272
2847191520,4ptp4l0-21swapper/012:12:450
2847191520,4ptp4l0-21swapper/011:54:570
2847191520,4ptp4l0-21swapper/009:33:570
2847191520,3ptp4l0-21swapper/110:05:011
2847191520,3ptp4l0-21swapper/108:48:551
2847191520,3ptp4l0-21swapper/011:49:450
2847191510,4ptp4l0-21swapper/112:27:051
2847191510,4ptp4l0-21swapper/110:36:301
2847191510,4ptp4l0-21swapper/110:27:101
2847191510,4ptp4l0-21swapper/010:32:530
2847191510,3ptp4l0-21swapper/210:07:542
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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