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2026-04-08 - 05:05
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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 highest latencies:
System rackdslot1.osadl.org (updated Wed Apr 08, 2026 00:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1888921670,4sleep3626199cyclictest19:35:223
63902860,4sleep20-21swapper/223:45:222
253272770,5sleep00-21swapper/000:25:280
6261996635,4cyclictest41-21ksoftirqd/300:37:213
6261996530,4cyclictest41-21ksoftirqd/320:28:103
6261996530,4cyclictest41-21ksoftirqd/320:28:103
6261996528,4cyclictest41-21ksoftirqd/323:46:583
131452650,4sleep00-21swapper/000:00:190
6261996324,4cyclictest41-21ksoftirqd/321:49:543
6261996232,3cyclictest41-21ksoftirqd/321:50:113
6261996228,4cyclictest41-21ksoftirqd/320:07:403
6261996225,4cyclictest41-21ksoftirqd/320:42:503
6261996225,4cyclictest41-21ksoftirqd/319:41:573
6261996225,4cyclictest41-21ksoftirqd/319:41:573
626199622,18cyclictest0-21swapper/319:13:583
134491620,6ptp4l0-21swapper/220:35:132
6261996131,4cyclictest41-21ksoftirqd/319:19:243
6261996130,7cyclictest41-21ksoftirqd/322:17:023
6261996130,4cyclictest41-21ksoftirqd/320:16:293
6261996130,4cyclictest41-21ksoftirqd/300:32:013
6261996128,4cyclictest41-21ksoftirqd/320:33:343
6261996120,4cyclictest41-21ksoftirqd/319:32:473
625899615,16cyclictest29158-21cat23:25:220
134491610,5ptp4l0-21swapper/222:00:212
6261996031,7cyclictest41-21ksoftirqd/323:15:183
6261996031,4cyclictest41-21ksoftirqd/319:50:003
6261996028,4cyclictest41-21ksoftirqd/300:29:213
6261996025,8cyclictest41-21ksoftirqd/322:46:453
625899604,17cyclictest7382-21ntpq19:10:220
6261995928,4cyclictest41-21ksoftirqd/319:52:543
6261995926,6cyclictest41-21ksoftirqd/300:05:153
6261995925,4cyclictest41-21ksoftirqd/321:01:323
625899597,17cyclictest26877-21ntpq21:00:210
6261995832,7cyclictest41-21ksoftirqd/320:55:233
6261995828,4cyclictest41-21ksoftirqd/323:13:263
6261995828,4cyclictest41-21ksoftirqd/321:14:423
6261995826,7cyclictest41-21ksoftirqd/321:45:013
6261995824,9cyclictest41-21ksoftirqd/321:35:003
6261995823,6cyclictest41-21ksoftirqd/323:30:183
625899586,12cyclictest28361-21ntpq19:55:220
625899583,9cyclictest23461-21egrep20:55:140
6261995729,9cyclictest41-21ksoftirqd/320:20:233
6261995727,4cyclictest41-21ksoftirqd/319:28:203
6261995726,4cyclictest41-21ksoftirqd/319:58:233
6261995722,4cyclictest41-21ksoftirqd/319:20:223
6261995720,7cyclictest41-21ksoftirqd/320:00:143
625899574,11cyclictest4155-21wc22:30:250
61902570,4sleep10-21swapper/119:10:001
134491570,3ptp4l0-21swapper/223:16:242
134491570,3ptp4l0-21swapper/219:20:262
6261995631,4cyclictest41-21ksoftirqd/322:52:223
6261995631,4cyclictest41-21ksoftirqd/322:52:223
6261995627,9cyclictest41-21ksoftirqd/323:35:213
6261995627,8cyclictest41-21ksoftirqd/322:30:273
6261995627,3cyclictest41-21ksoftirqd/321:18:283
625899563,15cyclictest0-21swapper/022:45:250
625899563,10cyclictest16239-21latency_hist20:40:010
625899562,10cyclictest22654-21timerwakeupswit20:50:280
239962560,4sleep00-21swapper/022:05:190
134491560,4ptp4l0-21swapper/122:16:471
134491560,3ptp4l0-21swapper/119:20:341
6261995530,3cyclictest41-21ksoftirqd/320:37:273
6261995526,8cyclictest41-21ksoftirqd/322:20:193
6261995523,8cyclictest41-21ksoftirqd/322:00:273
6261995520,7cyclictest41-21ksoftirqd/323:25:003
6261995519,4cyclictest41-21ksoftirqd/323:40:163
625899555,16cyclictest3977-21missed_timers23:40:210
625899552,11cyclictest19272-21latency_hist00:15:000
134491550,4ptp4l0-21swapper/222:31:082
134491550,3ptp4l0-21swapper/121:15:301
134491550,14ptp4l0-21swapper/219:15:202
6261995431,7cyclictest41-21ksoftirqd/323:25:263
6261995423,3cyclictest41-21ksoftirqd/322:07:113
6261995422,3cyclictest41-21ksoftirqd/321:37:063
6261995421,8cyclictest41-21ksoftirqd/320:50:203
6261995419,9cyclictest41-21ksoftirqd/320:10:213
6261995419,6cyclictest41-21ksoftirqd/321:25:003
6261995418,3cyclictest41-21ksoftirqd/322:39:443
625899544,17cyclictest0-21swapper/023:12:020
134491540,4ptp4l0-21swapper/222:23:502
6261995322,4cyclictest41-21ksoftirqd/323:05:193
6261995322,4cyclictest41-21ksoftirqd/322:40:183
134491530,4ptp4l0-21swapper/221:49:502
134491530,4ptp4l0-21swapper/220:22:312
134491530,4ptp4l0-21swapper/200:20:032
134491530,4ptp4l0-21swapper/120:01:201
134491530,3ptp4l0-21swapper/221:53:512
134491530,3ptp4l0-21swapper/200:37:432
6261995219,8cyclictest41-21ksoftirqd/323:00:253
625899522,10cyclictest0-21swapper/000:35:010
134491520,4ptp4l0-21swapper/222:13:462
134491520,4ptp4l0-21swapper/121:24:541
134491520,4ptp4l0-21swapper/120:25:051
134491520,4ptp4l0-21swapper/120:25:051
134491520,13ptp4l0-21swapper/221:43:222
6261995117,7cyclictest41-21ksoftirqd/323:50:143
6261995113,4cyclictest41-21ksoftirqd/321:05:233
625899516,8cyclictest27229-21python23:20:250
625899514,14cyclictest19855-21runrttasks21:55:210
134491510,4ptp4l0-21swapper/219:26:482
134491510,3ptp4l0-21swapper/220:13:422
626199504,3cyclictest41-21ksoftirqd/322:56:193
6261995022,7cyclictest41-21ksoftirqd/321:25:133
6261995019,8cyclictest41-21ksoftirqd/322:10:153
625899508,7cyclictest0-21swapper/020:05:250
625899506,15cyclictest27228-21mailstats22:10:240
6258995011,16cyclictest19221-21/usr/sbin/munin23:05:150
134491500,4ptp4l0-21swapper/223:57:162
134491500,4ptp4l0-21swapper/221:02:242
134491500,4ptp4l0-21swapper/220:50:362
134491500,4ptp4l0-21swapper/119:44:431
134491500,4ptp4l0-21swapper/119:44:431
134491500,3ptp4l0-21swapper/223:06:372
134491500,3ptp4l0-21swapper/122:06:531
134491500,3ptp4l0-21swapper/121:40:251
134491500,3ptp4l0-21swapper/119:30:381
6261994922,7cyclictest41-21ksoftirqd/322:00:003
6261994922,3cyclictest41-21ksoftirqd/320:46:373
625899494,8cyclictest0-21swapper/023:00:280
134491490,5ptp4l0-21swapper/123:29:261
134491490,4ptp4l0-21swapper/221:05:202
134491490,4ptp4l0-21swapper/219:40:442
134491490,4ptp4l0-21swapper/219:40:442
134491490,4ptp4l0-21swapper/200:17:312
134491490,4ptp4l0-21swapper/200:12:252
134491490,3ptp4l0-21swapper/220:45:202
134491490,10ptp4l5345-21/usr/sbin/munin19:05:240
626199484,3cyclictest41-21ksoftirqd/300:15:103
6261994816,10cyclictest41-21ksoftirqd/300:00:143
625899484,7cyclictest30548-21apt-get22:20:120
134491480,4ptp4l0-21swapper/221:16:092
134491480,4ptp4l0-21swapper/220:02:312
625899476,7cyclictest16917-21ls19:30:260
625899473,7cyclictest134491ptp4l20:49:160
625899470,14cyclictest435-21df_abs21:15:130
134491470,4ptp4l0-21swapper/123:39:241
134491470,12ptp4l0-21swapper/221:30:162
6261994619,3cyclictest41-21ksoftirqd/300:14:083
6261994610,9cyclictest41-21ksoftirqd/323:55:223
625899464,8cyclictest24972-21apt-get19:50:110
625899461,9cyclictest24403-21cat23:15:190
134491460,4ptp4l0-21swapper/220:16:102
134491460,3ptp4l0-21swapper/223:44:162
134491460,3ptp4l0-21swapper/221:26:022
134491460,3ptp4l0-21swapper/220:26:172
134491460,3ptp4l0-21swapper/220:26:172
134491460,3ptp4l0-21swapper/220:06:152
134491460,3ptp4l0-21swapper/119:45:551
134491460,11ptp4l0-21swapper/222:25:242
626199453,6cyclictest41-21ksoftirqd/322:29:203
626199453,2cyclictest41-21ksoftirqd/300:20:223
134491450,9ptp4l0-21swapper/020:01:310
134491450,7ptp4l0-21swapper/221:39:352
134491450,6ptp4l27271-21apt-get19:55:121
134491450,6ptp4l0-21swapper/022:15:260
134491450,4ptp4l18819-21apt-get20:45:121
134491450,4ptp4l0-21swapper/223:02:412
134491450,3ptp4l0-21swapper/222:40:062
134491450,10ptp4l0-21swapper/200:25:432
625899447,6cyclictest0-21swapper/021:09:340
625899445,7cyclictest5882-21ps23:45:180
134491440,9ptp4l0-21swapper/021:42:520
134491440,9ptp4l0-21swapper/019:18:260
134491440,5ptp4l2648-21apt-get21:20:120
134491440,3ptp4l0-21swapper/222:50:212
134491440,3ptp4l0-21swapper/222:50:212
134491440,3ptp4l0-21swapper/219:50:042
134491440,2ptp4l0-21swapper/222:49:042
625899434,8cyclictest8356-21ls22:40:190
625899434,7cyclictest13411-21df19:25:140
134491430,5ptp4l8531-21ntp_states22:40:221
134491430,5ptp4l0-21swapper/022:35:220
134491430,4ptp4l24877-21ls00:25:201
134491430,4ptp4l21640-21iostat_ios22:00:160
134491430,4ptp4l14303-21apt-get22:55:121
134491430,4ptp4l0-21swapper/121:58:421
134491430,3ptp4l0-21swapper/123:44:561
134491430,3ptp4l0-21swapper/123:17:331
134491430,10ptp4l0-21swapper/100:00:471
625899424,7cyclictest22164-21apt-get19:45:030
134491420,5ptp4l6419-21ntp_states23:45:211
134491420,4ptp4l31485-21ls22:20:191
134491420,4ptp4l30375-21apt-get21:10:122
134491420,4ptp4l28437-21df22:15:122
134491420,4ptp4l26445-21apt-get00:30:132
134491420,4ptp4l11911-21hddtemp_smartct20:30:160
134491420,4ptp4l10460-21iostat23:55:190
134491420,3ptp4l345-21apt-get23:35:120
134491420,3ptp4l1266-21irqstats22:25:201
625999412,38cyclictest0-21swapper/121:00:591
134491410,9ptp4l0-21swapper/220:56:532
134491410,8ptp4l25-21ksoftirqd/121:11:091
134491410,7ptp4l25-21ksoftirqd/120:31:241
134491410,5ptp4l9-21ksoftirqd/019:20:270
134491410,5ptp4l0-21swapper/220:40:272
134491410,5ptp4l0-21swapper/122:45:141
134491410,5ptp4l0-21swapper/121:36:101
134491410,5ptp4l0-21swapper/100:10:211
134491410,5ptp4l0-21swapper/022:55:140
134491410,5ptp4l0-21swapper/020:40:240
134491410,4ptp4l6981-21diskstats20:20:160
134491410,4ptp4l28220-21meminfo19:55:212
134491410,4ptp4l25472-21apt-get22:10:021
134491410,4ptp4l23308-21users00:20:261
134491410,4ptp4l20591-21users23:05:281
134491410,4ptp4l14265-21apt00:05:002
134491410,4ptp4l12316-21diskstats22:50:141
134491410,4ptp4l12316-21diskstats22:50:141
134491410,4ptp4l0-21swapper/222:08:402
134491410,4ptp4l0-21swapper/120:50:201
134491410,4ptp4l0-21swapper/119:35:151
134491410,3ptp4l3745-21memory22:30:201
625899406,13cyclictest2935-21ntpq20:10:220
625899401,14cyclictest0-21swapper/000:20:120
134491400,9ptp4l0-21swapper/223:52:262
134491400,6ptp4l30595-21df_abs21:10:140
134491400,5ptp4l0-21swapper/219:45:152
134491400,5ptp4l0-21swapper/119:10:181
134491400,5ptp4l0-21swapper/022:50:170
134491400,5ptp4l0-21swapper/022:50:170
134491400,5ptp4l0-21swapper/021:36:150
134491400,5ptp4l0-21swapper/019:36:120
134491400,4ptp4l0-21swapper/223:30:162
134491400,4ptp4l0-21swapper/223:25:192
134491400,4ptp4l0-21swapper/221:57:512
134491400,4ptp4l0-21swapper/219:32:042
134491400,4ptp4l0-21swapper/200:08:122
134491400,4ptp4l0-21swapper/123:20:151
134491400,4ptp4l0-21swapper/123:11:341
134491400,4ptp4l0-21swapper/121:50:121
134491400,4ptp4l0-21swapper/120:10:061
134491400,4ptp4l0-21swapper/120:05:121
134491400,4ptp4l0-21swapper/100:08:071
134491400,4ptp4l0-21swapper/023:50:110
134491400,4ptp4l0-21swapper/023:30:260
134491400,4ptp4l0-21swapper/022:26:440
134491400,4ptp4l0-21swapper/021:50:110
134491400,4ptp4l0-21swapper/021:46:040
134491400,4ptp4l0-21swapper/021:30:140
134491400,4ptp4l0-21swapper/021:27:310
134491400,4ptp4l0-21swapper/020:15:110
134491400,4ptp4l0-21swapper/000:19:060
134491400,3ptp4l9896-21apt-get23:55:131
134491400,3ptp4l31462-21meminfo23:30:191
134491400,3ptp4l29318-21iostat_ios00:35:211
134491400,3ptp4l14822-21diskstats00:05:160
134491400,3ptp4l14153-21memory19:25:221
134491390,5ptp4l0-21swapper/122:00:121
134491390,5ptp4l0-21swapper/121:05:091
134491390,5ptp4l0-21swapper/100:32:351
134491390,4ptp4l0-21swapper/223:14:372
134491390,4ptp4l0-21swapper/221:20:132
134491390,4ptp4l0-21swapper/220:31:202
134491390,4ptp4l0-21swapper/123:03:001
134491390,4ptp4l0-21swapper/121:45:271
134491390,4ptp4l0-21swapper/120:41:181
134491390,4ptp4l0-21swapper/120:20:281
134491390,4ptp4l0-21swapper/120:15:471
134491390,4ptp4l0-21swapper/119:17:361
134491390,4ptp4l0-21swapper/020:25:150
134491390,4ptp4l0-21swapper/020:25:140
134491390,4ptp4l0-21swapper/019:40:180
134491390,4ptp4l0-21swapper/019:40:180
134491390,4ptp4l0-21swapper/000:35:190
134491390,3ptp4l13987-21apt20:35:111
134491390,3ptp4l0-21swapper/219:12:112
134491390,3ptp4l0-21swapper/123:50:301
134491390,3ptp4l0-21swapper/100:17:401
134491380,4ptp4l0-21swapper/223:35:172
134491380,4ptp4l0-21swapper/223:22:522
134491380,4ptp4l0-21swapper/222:35:022
134491380,4ptp4l0-21swapper/219:35:012
134491380,4ptp4l0-21swapper/121:30:191
134491380,4ptp4l0-21swapper/119:50:231
134491380,3ptp4l0-21swapper/222:55:172
134491380,3ptp4l0-21swapper/122:36:041
134491370,4ptp4l0-21swapper/121:28:421
134491370,3ptp4l0-21swapper/120:55:201
53362153,7sleep20-21swapper/219:05:252
50332123,4sleep30-21swapper/319:05:223
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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