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2026-05-19 - 09:58
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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 Tue May 19, 2026 00:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
53521730,5sleep11434199cyclictest19:49:591
2063221240,3sleep01434099cyclictest22:50:190
134491670,32ptp4l33-21ksoftirqd/222:57:032
31262650,6sleep00-21swapper/019:55:010
134491620,4ptp4l0-21swapper/020:05:200
134491620,24ptp4l0-21swapper/322:55:543
134491600,3ptp4l21830-21apt-get21:45:153
154082590,4sleep00-21swapper/020:20:160
134491590,4ptp4l18010-21meminfo20:25:181
134491590,3ptp4l0-21swapper/122:35:541
134491580,4ptp4l2892-21apt-get21:05:032
134491580,3ptp4l0-21swapper/122:05:221
134491580,3ptp4l0-21swapper/023:45:190
134491570,4ptp4l0-21swapper/221:44:232
134491570,4ptp4l0-21swapper/123:01:181
134491570,4ptp4l0-21swapper/022:31:140
134491570,3ptp4l0-21swapper/219:28:092
134491560,3ptp4l0-21swapper/223:20:242
134491560,3ptp4l0-21swapper/219:23:572
134491550,4ptp4l0-21swapper/222:32:582
134491550,4ptp4l0-21swapper/021:50:180
134491550,3ptp4l0-21swapper/320:55:413
134491550,3ptp4l0-21swapper/122:11:481
134491540,4ptp4l0-21swapper/022:25:580
134491540,3ptp4l0-21swapper/119:18:501
134491540,2ptp4l0-21swapper/023:36:020
134491540,13ptp4l12429-21hddtemp_smartct19:05:131
134491530,5ptp4l0-21swapper/200:15:152
134491530,4ptp4l0-21swapper/320:13:263
134491530,4ptp4l0-21swapper/019:26:540
134491530,3ptp4l30997-21tr20:55:142
134491520,4ptp4l0-21swapper/322:05:393
134491520,4ptp4l0-21swapper/120:30:351
134491520,4ptp4l0-21swapper/100:25:251
134491520,4ptp4l0-21swapper/020:54:290
134491520,3ptp4l0-21swapper/221:31:452
14341995110,8cyclictest25-21ksoftirqd/123:14:591
134491510,4ptp4l1434399cyclictest21:35:263
134491510,4ptp4l0-21swapper/321:17:583
134491510,4ptp4l0-21swapper/221:49:352
134491510,4ptp4l0-21swapper/119:25:361
134491510,4ptp4l0-21swapper/021:39:310
134491510,4ptp4l0-21swapper/000:19:020
134491510,3ptp4l0-21swapper/323:12:343
134491510,3ptp4l0-21swapper/121:20:281
134491510,3ptp4l0-21swapper/023:05:000
134491510,3ptp4l0-21swapper/022:09:010
134491510,11ptp4l0-21swapper/119:36:101
134491510,10ptp4l12312-21diskstats19:05:130
134491500,4ptp4l0-21swapper/320:24:043
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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