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2025-11-14 - 20:41
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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 14, 2025 12:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1133721730,5sleep02683499cyclictest12:20:260
2327421380,3sleep12683599cyclictest11:35:291
25862730,2sleep32583-21awk10:55:003
2847191660,3ptp4l0-21swapper/308:11:543
2847191600,4ptp4l0-21swapper/309:41:003
2847191600,4ptp4l0-21swapper/309:06:203
2847191600,4ptp4l0-21swapper/211:24:522
2847191600,3ptp4l0-21swapper/311:00:043
2847191600,3ptp4l0-21swapper/212:12:192
2847191590,3ptp4l0-21swapper/208:07:152
2847191590,2ptp4l0-21swapper/311:40:143
2847191580,4ptp4l0-21swapper/312:16:583
2847191580,4ptp4l0-21swapper/211:49:002
2847191580,3ptp4l0-21swapper/210:00:242
2847191570,4ptp4l21575-21/usr/sbin/munin11:35:213
2847191570,4ptp4l0-21swapper/207:25:162
2847191570,3ptp4l0-21swapper/208:28:012
2847191570,3ptp4l0-21swapper/207:20:252
26834995718,6cyclictest9-21ksoftirqd/007:30:000
2847191560,4ptp4l0-21swapper/309:37:173
2847191560,4ptp4l0-21swapper/309:02:523
2847191560,3ptp4l0-21swapper/308:20:283
2847191560,3ptp4l0-21swapper/307:25:323
2847191560,13ptp4l26730-21irqstats10:35:233
2847191560,13ptp4l26730-21irqstats10:35:233
2847191550,5ptp4l0-21swapper/007:07:510
2847191550,4ptp4l0-21swapper/210:05:322
2847191550,3ptp4l0-21swapper/308:40:063
2847191550,16ptp4l25755-21rt-features07:05:261
26835995525,4cyclictest25-21ksoftirqd/108:15:151
26835995525,4cyclictest25-21ksoftirqd/108:15:151
26835995523,7cyclictest25-21ksoftirqd/107:15:011
2847191540,4ptp4l0-21swapper/311:21:043
2847191540,4ptp4l0-21swapper/207:12:482
2847191540,3ptp4l0-21swapper/307:10:173
2683599544,9cyclictest25-21ksoftirqd/109:15:001
2847191530,4ptp4l0-21swapper/310:11:263
2847191530,4ptp4l0-21swapper/308:54:273
2847191530,3ptp4l0-21swapper/310:57:253
2847191530,3ptp4l0-21swapper/310:01:403
2847191530,3ptp4l0-21swapper/211:59:382
2847191530,3ptp4l0-21swapper/209:04:422
2847191530,3ptp4l0-21swapper/207:50:332
2683599534,8cyclictest13523-21sendmail-msp08:59:591
2683599534,6cyclictest25-21ksoftirqd/108:00:001
2847191520,4ptp4l0-21swapper/311:12:173
2847191520,4ptp4l0-21swapper/210:55:012
2683599524,8cyclictest25-21ksoftirqd/110:35:011
2683599523,6cyclictest25-21ksoftirqd/107:45:141
2683599523,6cyclictest207-21systemd-journal08:35:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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