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2025-10-19 - 07:21
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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 Sun Oct 19, 2025 00:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26290997513,21cyclictest27498-21date22:40:002
2847191640,5ptp4l0-21swapper/022:40:240
2847191640,3ptp4l15477-21chrt22:12:210
2847191630,8ptp4l0-21swapper/319:05:193
2847191600,4ptp4l0-21swapper/223:35:342
2847191590,4ptp4l0-21swapper/322:45:393
2847191590,4ptp4l0-21swapper/223:44:112
2847191590,4ptp4l0-21swapper/221:34:592
2847191590,4ptp4l0-21swapper/122:00:151
2847191590,3ptp4l31156-21apt-get19:20:033
2847191590,3ptp4l0-21swapper/221:25:172
2847191590,3ptp4l0-21swapper/220:48:522
2847191580,4ptp4l0-21swapper/219:46:512
2847191580,4ptp4l0-21swapper/020:42:260
2847191580,3ptp4l0-21swapper/123:55:241
2847191580,3ptp4l0-21swapper/100:19:531
2847191570,4ptp4l0-21swapper/123:09:091
2847191570,4ptp4l0-21swapper/122:45:291
2847191570,4ptp4l0-21swapper/120:45:331
2847191570,4ptp4l0-21swapper/120:36:181
2847191570,4ptp4l0-21swapper/019:39:100
2847191570,3ptp4l0-21swapper/323:25:283
2847191570,3ptp4l0-21swapper/320:10:093
2847191570,3ptp4l0-21swapper/123:45:321
2847191570,3ptp4l0-21swapper/121:23:001
2847191570,3ptp4l0-21swapper/119:22:391
26288995721,8cyclictest9-21ksoftirqd/022:55:150
2847191560,4ptp4l0-21swapper/121:05:131
2847191560,4ptp4l0-21swapper/022:08:190
2847191560,4ptp4l0-21swapper/021:14:290
2847191560,4ptp4l0-21swapper/021:01:040
2847191560,4ptp4l0-21swapper/021:01:040
2847191560,3ptp4l0-21swapper/123:19:401
2847191560,3ptp4l0-21swapper/120:20:191
2847191560,3ptp4l0-21swapper/119:54:591
2847191560,3ptp4l0-21swapper/119:27:521
2847191560,3ptp4l0-21swapper/023:13:100
26288995615,8cyclictest9-21ksoftirqd/000:40:000
2847191550,4ptp4l0-21swapper/323:49:073
2847191550,4ptp4l0-21swapper/319:42:533
2847191550,4ptp4l0-21swapper/122:30:111
2847191550,4ptp4l0-21swapper/022:31:100
2847191550,4ptp4l0-21swapper/022:02:160
2847191550,4ptp4l0-21swapper/021:33:500
2847191550,4ptp4l0-21swapper/021:16:320
2847191550,4ptp4l0-21swapper/020:19:510
2847191550,4ptp4l0-21swapper/019:41:330
2847191550,4ptp4l0-21swapper/000:32:100
2847191550,4ptp4l0-21swapper/000:24:490
2847191550,3ptp4l0-21swapper/321:28:433
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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