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2025-08-22 - 00:09
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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 Thu Aug 21, 2025 12:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
84892720,5sleep0313499cyclictest10:50:000
84892720,5sleep0313499cyclictest10:50:000
9852680,5sleep00-21swapper/008:15:150
2847191680,31ptp4l25-21ksoftirqd/109:35:011
2847191680,31ptp4l25-21ksoftirqd/109:35:011
3135996727,9cyclictest25-21ksoftirqd/112:30:291
2847191670,4ptp4l20429-21dump-pmu-power12:25:000
313799661,25cyclictest7931-21cpuspeed_turbos07:20:143
313799661,25cyclictest7931-21cpuspeed_turbos07:20:143
3135996630,10cyclictest25-21ksoftirqd/110:40:001
2847191640,5ptp4l0-21swapper/010:25:280
249452640,6sleep0313499cyclictest09:05:170
313799630,22cyclictest3022-21mailstats10:35:263
2847191630,4ptp4l11259-21ntp_states07:25:251
2847191630,20ptp4l0-21swapper/007:20:170
2847191630,20ptp4l0-21swapper/007:20:160
3135996223,9cyclictest25-21ksoftirqd/110:25:141
2847191620,3ptp4l10609-21/usr/sbin/munin09:45:160
313799612,56cyclictest0-21swapper/311:10:253
2847191610,4ptp4l0-21swapper/207:20:262
2847191610,4ptp4l0-21swapper/207:20:262
313799601,25cyclictest8489-21taskset11:56:303
313799601,21cyclictest20310-21cpuspeed_turbos10:05:153
2847191600,3ptp4l0-21swapper/109:15:301
2847191590,4ptp4l0-21swapper/009:30:210
2847191590,4ptp4l0-21swapper/009:30:210
2847191590,3ptp4l0-21swapper/010:35:150
313799580,55cyclictest32350-21/usr/sbin/munin09:20:223
313799580,25cyclictest28441-21taskset08:04:523
2847191580,4ptp4l0-21swapper/008:21:550
2847191580,3ptp4l0-21swapper/310:55:153
2847191580,3ptp4l0-21swapper/009:10:180
3135995727,10cyclictest25-21ksoftirqd/109:55:141
3135995717,6cyclictest25-21ksoftirqd/109:43:331
2847191570,4ptp4l0-21swapper/209:40:002
2847191570,3ptp4l0-21swapper/108:29:551
2847191570,3ptp4l0-21swapper/008:25:510
313799562,51cyclictest0-21swapper/309:05:293
3135995630,4cyclictest25-21ksoftirqd/109:20:271
3135995624,4cyclictest25-21ksoftirqd/111:35:171
3135995623,6cyclictest25-21ksoftirqd/108:25:001
2847191560,4ptp4l0-21swapper/108:11:271
2847191560,3ptp4l0-21swapper/111:40:281
313799551,24cyclictest23825-21taskset09:00:343
313799550,52cyclictest13559-21/usr/sbin/munin11:00:153
3135995526,6cyclictest25-21ksoftirqd/111:50:301
3135995525,4cyclictest25-21ksoftirqd/111:00:011
3135995522,6cyclictest25-21ksoftirqd/110:35:001
3135995520,4cyclictest25-21ksoftirqd/111:10:261
2847191550,4ptp4l0-21swapper/107:47:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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