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2026-06-13 - 09:48
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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 Sat Jun 13, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491730,10ptp4l26579-21hddtemp_smartct19:05:150
28487997028,5cyclictest41-21ksoftirqd/323:11:323
28485996733,8cyclictest25-21ksoftirqd/120:03:241
28485996732,9cyclictest25-21ksoftirqd/122:40:011
28487996336,3cyclictest41-21ksoftirqd/300:35:003
28487996331,5cyclictest41-21ksoftirqd/320:54:533
28487996326,5cyclictest41-21ksoftirqd/319:39:153
28485996332,8cyclictest25-21ksoftirqd/121:50:141
28485996332,5cyclictest25-21ksoftirqd/123:15:181
28485996328,7cyclictest25-21ksoftirqd/123:40:231
28485996325,4cyclictest25-21ksoftirqd/123:00:151
134491630,9ptp4l0-21swapper/200:32:212
28485996233,8cyclictest25-21ksoftirqd/122:00:221
28487996126,4cyclictest41-21ksoftirqd/320:32:523
28485996022,8cyclictest25-21ksoftirqd/122:45:281
28485996018,8cyclictest25-21ksoftirqd/120:20:221
134491600,23ptp4l33-21ksoftirqd/220:50:202
28487995928,10cyclictest41-21ksoftirqd/319:11:593
28487995925,3cyclictest41-21ksoftirqd/320:02:503
28485995930,7cyclictest25-21ksoftirqd/120:05:161
28485995925,4cyclictest25-21ksoftirqd/122:20:191
134691590,9getstats0-21swapper/223:55:502
28487995826,4cyclictest41-21ksoftirqd/321:46:113
28487995825,4cyclictest41-21ksoftirqd/300:03:243
28487995825,4cyclictest41-21ksoftirqd/300:03:233
28485995829,3cyclictest25-21ksoftirqd/119:10:271
28485995826,4cyclictest25-21ksoftirqd/120:40:231
28485995826,3cyclictest25-21ksoftirqd/121:08:271
134491580,4ptp4l0-21swapper/122:26:201
68462570,2sleep06849-21cut20:40:170
28487995723,4cyclictest41-21ksoftirqd/321:37:333
28487995720,10cyclictest41-21ksoftirqd/319:20:013
28485995729,3cyclictest25-21ksoftirqd/121:19:111
28485995725,4cyclictest25-21ksoftirqd/100:35:001
28485995725,3cyclictest25-21ksoftirqd/100:20:271
28485995717,7cyclictest25-21ksoftirqd/100:14:111
266492570,3sleep1231rcuc/120:15:111
134491570,4ptp4l0-21swapper/121:11:461
28487995624,5cyclictest41-21ksoftirqd/320:24:153
28485995631,3cyclictest25-21ksoftirqd/121:40:271
28485995626,3cyclictest25-21ksoftirqd/123:35:121
28485995626,2cyclictest25-21ksoftirqd/119:38:321
28485995622,10cyclictest25-21ksoftirqd/119:30:271
28485995619,15cyclictest25-21ksoftirqd/119:50:191
134491560,3ptp4l0-21swapper/022:55:210
134491560,2ptp4l0-21swapper/019:35:110
28487995523,4cyclictest41-21ksoftirqd/321:23:453
28487995518,6cyclictest41-21ksoftirqd/320:19:593
28485995525,3cyclictest25-21ksoftirqd/119:55:201
28485995523,6cyclictest25-21ksoftirqd/121:35:141
28485995521,7cyclictest25-21ksoftirqd/123:25:251
28485995519,7cyclictest25-21ksoftirqd/100:00:001
28485995518,5cyclictest25-21ksoftirqd/121:55:221
134491550,4ptp4l0-21swapper/221:49:042
134491550,4ptp4l0-21swapper/023:50:200
28487995427,7cyclictest41-21ksoftirqd/321:05:013
28487995424,7cyclictest41-21ksoftirqd/323:35:233
28487995423,3cyclictest41-21ksoftirqd/320:44:303
28487995422,11cyclictest41-21ksoftirqd/323:02:283
28487995421,4cyclictest41-21ksoftirqd/323:45:193
28487995420,4cyclictest41-21ksoftirqd/320:06:483
28487995419,4cyclictest41-21ksoftirqd/322:00:253
28487995418,4cyclictest41-21ksoftirqd/319:51:043
28485995430,3cyclictest25-21ksoftirqd/123:31:521
28485995430,3cyclictest25-21ksoftirqd/123:31:521
28485995430,3cyclictest25-21ksoftirqd/122:34:051
28485995425,7cyclictest25-21ksoftirqd/100:05:011
28485995425,7cyclictest25-21ksoftirqd/100:05:011
28485995422,7cyclictest25-21ksoftirqd/122:19:201
28485995421,9cyclictest25-21ksoftirqd/123:05:191
28485995421,7cyclictest25-21ksoftirqd/100:35:161
134491540,4ptp4l0-21swapper/219:16:172
28487995324,3cyclictest41-21ksoftirqd/321:53:453
28487995323,8cyclictest41-21ksoftirqd/321:17:433
28487995320,3cyclictest41-21ksoftirqd/300:35:173
2848599537,2cyclictest25-21ksoftirqd/123:50:201
28485995326,3cyclictest25-21ksoftirqd/122:53:431
28485995325,9cyclictest25-21ksoftirqd/120:30:221
28485995324,6cyclictest25-21ksoftirqd/119:20:241
28485995322,3cyclictest25-21ksoftirqd/121:30:151
28485995319,6cyclictest25-21ksoftirqd/100:05:221
28485995316,8cyclictest25-21ksoftirqd/123:25:001
134491530,4ptp4l0-21swapper/220:24:082
28487995226,6cyclictest41-21ksoftirqd/322:30:193
28487995221,5cyclictest41-21ksoftirqd/319:21:253
28487995221,3cyclictest41-21ksoftirqd/322:50:193
28487995221,3cyclictest41-21ksoftirqd/322:23:183
28487995219,4cyclictest41-21ksoftirqd/320:25:123
28487995219,3cyclictest41-21ksoftirqd/321:08:353
28485995228,3cyclictest25-21ksoftirqd/121:03:541
28485995219,8cyclictest25-21ksoftirqd/121:25:221
28485995216,9cyclictest25-21ksoftirqd/120:52:171
18932520,4sleep00-21swapper/021:40:160
134491520,4ptp4l0-21swapper/223:24:192
134491520,4ptp4l0-21swapper/222:27:432
134491520,4ptp4l0-21swapper/221:43:472
134491520,3ptp4l0-21swapper/222:37:112
28487995123,6cyclictest41-21ksoftirqd/319:28:303
28487995123,3cyclictest41-21ksoftirqd/322:29:403
28487995121,8cyclictest41-21ksoftirqd/323:30:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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