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2026-07-23 - 05:15
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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 100 highest latencies:
System rackdslot1.osadl.org (updated Thu Jul 23, 2026 00:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1223221470,3sleep3732599cyclictest19:20:133
1223221470,3sleep3732599cyclictest19:20:133
134491660,5ptp4l0-21swapper/022:45:200
7325996427,9cyclictest41-21ksoftirqd/323:40:443
7323996424,4cyclictest25-21ksoftirqd/123:50:211
7325996332,3cyclictest41-21ksoftirqd/300:00:003
7325996328,8cyclictest41-21ksoftirqd/322:46:083
7323996229,8cyclictest25-21ksoftirqd/119:10:241
7323996229,4cyclictest25-21ksoftirqd/121:35:161
134491620,4ptp4l0-21swapper/020:40:160
134491620,3ptp4l31916-21ntp_states22:20:230
7325996134,4cyclictest41-21ksoftirqd/323:19:343
7325996127,8cyclictest41-21ksoftirqd/321:45:013
7325996126,8cyclictest41-21ksoftirqd/300:20:563
7323996132,7cyclictest25-21ksoftirqd/119:15:141
7323996132,7cyclictest25-21ksoftirqd/119:15:141
134491610,12ptp4l0-21swapper/021:55:230
7323996057,2cyclictest231rcuc/122:00:181
7323996032,7cyclictest25-21ksoftirqd/123:05:241
134491600,4ptp4l0-21swapper/220:02:062
134491600,4ptp4l0-21swapper/220:02:062
134491600,3ptp4l0-21swapper/220:49:172
7325995921,7cyclictest41-21ksoftirqd/321:55:203
7323995928,3cyclictest25-21ksoftirqd/121:25:281
7323995926,7cyclictest25-21ksoftirqd/121:45:131
7323995925,10cyclictest25-21ksoftirqd/122:45:101
238662590,4sleep00-21swapper/023:20:200
238662590,4sleep00-21swapper/023:20:200
134491590,4ptp4l0-21swapper/021:05:200
7325995824,4cyclictest41-21ksoftirqd/300:40:003
7325995820,7cyclictest41-21ksoftirqd/320:55:283
7323995828,8cyclictest25-21ksoftirqd/121:34:561
7323995820,7cyclictest25-21ksoftirqd/122:25:241
134491580,4ptp4l10916-21ps19:15:250
134491580,4ptp4l10916-21ps19:15:250
134491580,4ptp4l0-21swapper/023:40:000
134491580,4ptp4l0-21swapper/020:30:570
134491580,4ptp4l0-21swapper/020:30:570
134491580,4ptp4l0-21swapper/019:50:240
134491580,3ptp4l0-21swapper/219:24:552
134491580,3ptp4l0-21swapper/219:24:552
134491580,3ptp4l0-21swapper/121:04:401
134491580,3ptp4l0-21swapper/020:00:190
134491580,3ptp4l0-21swapper/020:00:190
7325995727,3cyclictest41-21ksoftirqd/321:05:263
732399576,4cyclictest30367-21latency_hist22:20:011
7323995731,10cyclictest25-21ksoftirqd/122:10:161
7323995728,4cyclictest25-21ksoftirqd/120:15:141
7323995727,8cyclictest25-21ksoftirqd/123:30:471
7323995727,6cyclictest25-21ksoftirqd/123:05:001
134491570,4ptp4l0-21swapper/020:35:000
134491570,17ptp4l0-21swapper/021:36:540
7325995625,9cyclictest41-21ksoftirqd/322:50:103
7325995624,8cyclictest41-21ksoftirqd/320:05:173
7323995626,7cyclictest25-21ksoftirqd/121:15:151
7323995626,7cyclictest25-21ksoftirqd/121:15:151
7323995625,8cyclictest25-21ksoftirqd/119:50:281
134491560,4ptp4l0-21swapper/020:05:060
134491560,3ptp4l0-21swapper/021:00:130
134491560,3ptp4l0-21swapper/000:25:500
7325995527,3cyclictest41-21ksoftirqd/320:10:253
7323995520,6cyclictest25-21ksoftirqd/121:20:291
732399550,13cyclictest25-21ksoftirqd/120:05:271
134491550,4ptp4l0-21swapper/123:56:291
134491550,4ptp4l0-21swapper/122:07:191
134491550,4ptp4l0-21swapper/023:45:030
134491550,3ptp4l0-21swapper/019:31:520
92622540,38sleep125-21ksoftirqd/122:50:161
7325995421,3cyclictest41-21ksoftirqd/321:45:203
7325995419,8cyclictest41-21ksoftirqd/321:10:173
7323995429,7cyclictest25-21ksoftirqd/123:10:251
134491540,4ptp4l0-21swapper/021:54:030
134491540,3ptp4l0-21swapper/000:36:190
7325995325,7cyclictest41-21ksoftirqd/322:05:293
7325995325,6cyclictest41-21ksoftirqd/300:25:163
7325995323,4cyclictest41-21ksoftirqd/322:40:163
7325995322,3cyclictest41-21ksoftirqd/300:35:003
7325995322,3cyclictest41-21ksoftirqd/300:00:243
7325995321,4cyclictest41-21ksoftirqd/319:35:003
732399533,10cyclictest25-21ksoftirqd/121:40:231
7323995324,6cyclictest25-21ksoftirqd/100:35:201
7323995320,7cyclictest25-21ksoftirqd/100:25:121
134491530,4ptp4l0-21swapper/023:06:020
134491530,3ptp4l0-21swapper/123:49:271
134491530,3ptp4l0-21swapper/020:19:420
7325995226,7cyclictest41-21ksoftirqd/319:40:273
7325995225,6cyclictest41-21ksoftirqd/320:20:123
7325995223,7cyclictest41-21ksoftirqd/322:10:203
7325995221,7cyclictest41-21ksoftirqd/319:25:133
7325995221,7cyclictest41-21ksoftirqd/319:25:133
7325995221,4cyclictest41-21ksoftirqd/320:30:163
7325995221,4cyclictest41-21ksoftirqd/320:30:163
732399525,9cyclictest25-21ksoftirqd/120:45:171
732399525,7cyclictest25-21ksoftirqd/120:30:011
134491520,4ptp4l0-21swapper/123:35:491
134491520,4ptp4l0-21swapper/021:18:230
134491520,4ptp4l0-21swapper/021:18:230
134491520,4ptp4l0-21swapper/020:29:580
134491520,4ptp4l0-21swapper/000:17:000
134491520,3ptp4l0-21swapper/120:40:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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