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2026-04-20 - 09:08
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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 376 highest latencies:
System rackdslot1.osadl.org (updated Mon Apr 20, 2026 00:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2228921580,5sleep20-21swapper/221:35:252
1858699823,77cyclictest0-21swapper/222:40:282
18585996916,16cyclictest8771-21chrt19:56:151
18585996914,11cyclictest4772-21chrt22:09:461
1858499697,6cyclictest134691getstats22:50:080
18585996816,16cyclictest31989-21chrt19:37:141
18585996815,15cyclictest28349-21chrt00:08:321
18585996814,9cyclictest29863-21seq20:42:191
18585996716,15cyclictest30502-21chrt00:11:491
18585996614,11cyclictest13545-21taskset21:15:451
18585996612,11cyclictest302092sleep123:02:411
134491660,4ptp4l28350-21apt-get23:00:142
18585996516,16cyclictest25298-21chrt21:43:341
18585996515,11cyclictest16292-21chrt23:42:041
18585996515,11cyclictest11310-21taskset20:04:001
18585996514,12cyclictest18743-21taskset23:46:161
18585996514,12cyclictest1317-21runrttasks22:14:421
18585996514,11cyclictest13636-21chrt20:06:021
18585996416,16cyclictest18150-21taskset21:25:371
18585996416,16cyclictest11510-21chrt23:30:401
134491640,3ptp4l17724-21ntp_states22:35:233
18585996315,15cyclictest25276-21chrt20:32:421
18585996314,11cyclictest1317-21runrttasks20:18:491
18585996313,10cyclictest20300-21chrt19:10:301
18585996312,11cyclictest5882sleep100:19:401
1858599629,18cyclictest15475-21systemctl21:20:261
18585996217,16cyclictest5189-21chrt00:28:181
18585996215,16cyclictest16243-21chrt22:33:371
18585996215,15cyclictest27881-21chrt22:57:321
18585996215,15cyclictest23255-21chrt22:49:541
18585996215,11cyclictest30118-21seq21:53:441
18585996214,12cyclictest1317-21runrttasks20:21:171
18585996214,10cyclictest25485-21taskset22:51:221
18585996214,10cyclictest22839-21chrt20:25:561
18584996212,10cyclictest1317-21runrttasks20:57:040
18586996133,8cyclictest33-21ksoftirqd/223:55:152
18585996116,16cyclictest32221-21chrt20:48:061
18585996115,15cyclictest6648-21chrt19:53:261
18585996115,15cyclictest4427-21chrt19:49:251
18585996112,10cyclictest276742chrt21:49:321
18584996113,12cyclictest1317-21runrttasks00:13:360
18585996015,10cyclictest7383-21chrt00:31:591
18585996015,10cyclictest22801-21chrt19:18:001
18585996015,10cyclictest22801-21chrt19:18:001
18585996015,10cyclictest2054-21chrt19:44:041
18585996014,11cyclictest32601-21taskset20:50:071
18585996013,11cyclictest4612-21cat20:59:551
18585996013,11cyclictest1317-21runrttasks22:39:341
18585996012,10cyclictest32189-21seq21:55:531
18584996017,11cyclictest11533-21taskset22:22:440
18584996015,10cyclictest6626-21taskset21:01:020
18584996012,11cyclictest1317-21runrttasks23:33:090
18584996012,11cyclictest1317-21runrttasks21:21:070
18584996012,11cyclictest1317-21runrttasks20:29:240
18584996012,11cyclictest1317-21runrttasks00:26:520
18584996012,10cyclictest1317-21runrttasks23:44:530
18584996012,10cyclictest1317-21runrttasks22:00:540
18584996011,11cyclictest1317-21runrttasks00:05:500
18586995926,7cyclictest33-21ksoftirqd/223:25:012
18585995919,10cyclictest4844-21seq23:18:441
18585995916,16cyclictest11424-21chrt22:21:251
18585995915,11cyclictest21013-21chrt23:50:581
18585995914,11cyclictest22914-21seq21:37:401
18585995913,10cyclictest1317-21runrttasks21:12:481
1858499599,12cyclictest0-21swapper/021:19:270
18584995917,10cyclictest16263-21taskset22:33:510
18584995911,11cyclictest1317-21runrttasks22:12:130
134491590,4ptp4l0-21swapper/121:00:191
18585995816,16cyclictest9145-21chrt22:16:521
18585995816,16cyclictest23447-21chrt23:57:411
18585995816,10cyclictest13717-21taskset22:25:431
18585995815,10cyclictest32485-21taskset23:07:231
18585995815,10cyclictest20778-21chrt21:34:441
1858499589,10cyclictest0-21swapper/022:05:090
18584995817,11cyclictest2884-21seq00:23:120
18584995816,11cyclictest25078-21taskset21:40:480
18584995813,11cyclictest1317-21runrttasks23:28:320
18584995813,11cyclictest1317-21runrttasks19:58:030
18584995813,10cyclictest1317-21runrttasks23:59:290
18584995812,10cyclictest1317-21runrttasks19:22:440
18584995811,10cyclictest0-21swapper/019:27:110
18584995810,10cyclictest1317-21runrttasks00:37:430
18584995810,10cyclictest0-21swapper/000:31:180
18585995715,17cyclictest29662-21chrt19:31:521
18585995714,11cyclictest2602-21seq23:14:271
18585995714,10cyclictest2103-21taskset22:00:431
18585995713,11cyclictest1317-21runrttasks20:36:061
1858499579,10cyclictest0-21swapper/022:55:030
1858499579,10cyclictest0-21swapper/020:49:470
1858499578,9cyclictest0-21swapper/022:37:130
1858499578,10cyclictest0-21swapper/020:01:000
18584995713,9cyclictest4938-21cat23:19:560
18584995712,11cyclictest1317-21runrttasks22:42:050
18584995712,11cyclictest1317-21runrttasks21:13:120
18584995712,10cyclictest6921-21seq23:20:410
18584995712,10cyclictest1317-21runrttasks19:30:020
18584995711,10cyclictest0-21swapper/020:35:550
18586995624,5cyclictest33-21ksoftirqd/220:25:192
18585995615,10cyclictest7860-21chrt00:35:081
1858499569,44cyclictest0-21swapper/021:50:250
1858499569,10cyclictest0-21swapper/022:19:440
18584995613,10cyclictest1317-21runrttasks19:45:550
134491560,4ptp4l0-21swapper/320:36:573
18586995524,4cyclictest33-21ksoftirqd/200:10:492
18585995516,16cyclictest7179-21chrt21:05:111
18585995514,10cyclictest15905-21seq20:10:421
18585995513,10cyclictest23886-21taskset00:00:061
1858499558,9cyclictest0-21swapper/021:26:450
18584995516,11cyclictest23219-21taskset22:49:230
18584995511,11cyclictest26773-21ntpq21:45:220
18584995511,11cyclictest0-21swapper/000:17:190
134491550,3ptp4l0-21swapper/322:51:153
18586995418,5cyclictest33-21ksoftirqd/219:25:262
18585995416,15cyclictest20737-21chrt22:41:591
18585995415,15cyclictest23208-21chrt19:20:051
18585995414,11cyclictest7040-21taskset23:22:061
1858499548,43cyclictest0-21swapper/023:10:170
18584995416,11cyclictest29869-21taskset20:42:230
18584995412,10cyclictest1317-21runrttasks20:53:590
134491540,5ptp4l0-21swapper/320:50:133
134491540,4ptp4l0-21swapper/323:55:143
134491540,4ptp4l0-21swapper/300:24:143
18586995323,7cyclictest33-21ksoftirqd/222:34:592
18586995322,3cyclictest33-21ksoftirqd/223:45:012
18585995316,16cyclictest9205-21taskset23:25:311
1858499539,9cyclictest0-21swapper/021:08:520
1858499539,11cyclictest0-21swapper/023:03:050
18584995312,10cyclictest22772-21seq19:17:390
18584995312,10cyclictest22772-21seq19:17:390
18584995311,11cyclictest0-21swapper/021:37:290
18584995310,11cyclictest0-21swapper/020:24:230
18584995310,11cyclictest0-21swapper/020:16:000
134491530,4ptp4l0-21swapper/322:21:123
134491530,4ptp4l0-21swapper/319:26:223
134491530,4ptp4l0-21swapper/223:35:462
134491530,3ptp4l0-21swapper/220:50:452
1858499529,9cyclictest0-21swapper/019:50:540
1858499529,18cyclictest18967-21df21:30:150
1858499528,10cyclictest0-21swapper/023:37:550
1858499528,10cyclictest0-21swapper/019:13:110
18584995210,11cyclictest0-21swapper/020:12:200
134491520,4ptp4l0-21swapper/323:52:483
134491520,3ptp4l0-21swapper/323:20:593
134491520,3ptp4l0-21swapper/319:55:243
18586995121,7cyclictest33-21ksoftirqd/220:20:002
18586995120,5cyclictest33-21ksoftirqd/220:05:192
18586995118,5cyclictest33-21ksoftirqd/219:30:222
18584995111,12cyclictest0-21swapper/022:28:140
134491510,3ptp4l0-21swapper/300:33:363
134491510,3ptp4l0-21swapper/300:09:373
134491510,3ptp4l0-21swapper/223:11:052
134491510,3ptp4l0-21swapper/222:29:002
1858499509,10cyclictest0-21swapper/023:07:510
18584995010,10cyclictest0-21swapper/021:59:380
18584995010,10cyclictest0-21swapper/000:00:370
134491500,4ptp4l0-21swapper/319:19:283
134491500,4ptp4l0-21swapper/319:19:283
134491500,4ptp4l0-21swapper/222:06:382
134491500,3ptp4l0-21swapper/221:16:522
311072490,5sleep30-21swapper/319:35:193
1858699492,4cyclictest0-21swapper/220:38:382
18586994919,3cyclictest33-21ksoftirqd/220:00:222
18586994917,6cyclictest33-21ksoftirqd/223:50:182
134491490,4ptp4l0-21swapper/323:45:293
134491490,4ptp4l0-21swapper/322:30:193
18586994818,4cyclictest33-21ksoftirqd/223:30:152
18586994817,4cyclictest33-21ksoftirqd/221:00:252
18586994816,5cyclictest33-21ksoftirqd/220:20:162
18586994816,4cyclictest33-21ksoftirqd/219:10:152
18586994813,5cyclictest33-21ksoftirqd/222:45:132
18586994813,5cyclictest33-21ksoftirqd/220:35:012
134491480,4ptp4l0-21swapper/323:42:573
134491480,4ptp4l0-21swapper/323:30:593
134491480,4ptp4l0-21swapper/321:12:593
134491480,4ptp4l0-21swapper/222:52:042
134491480,4ptp4l0-21swapper/200:20:112
134491480,3ptp4l32544-21sed20:50:012
134491480,3ptp4l0-21swapper/322:18:543
134491480,3ptp4l0-21swapper/300:40:003
18586994734,10cyclictest33-21ksoftirqd/223:05:102
18586994716,6cyclictest33-21ksoftirqd/221:30:292
18586994715,5cyclictest33-21ksoftirqd/221:27:562
18586994715,5cyclictest33-21ksoftirqd/219:40:142
18586994714,5cyclictest33-21ksoftirqd/222:00:272
18586994713,5cyclictest33-21ksoftirqd/221:55:222
1858699471,2cyclictest121rcu_preempt00:38:582
18586994712,3cyclictest33-21ksoftirqd/222:55:152
1858499479,10cyclictest0-21swapper/020:30:490
134491470,9ptp4l0-21swapper/220:10:082
18586994617,4cyclictest33-21ksoftirqd/221:07:152
18586994616,6cyclictest33-21ksoftirqd/200:10:002
18586994615,8cyclictest33-21ksoftirqd/221:23:562
18586994615,5cyclictest33-21ksoftirqd/221:40:252
1858499469,9cyclictest0-21swapper/023:51:150
18584994611,9cyclictest0-21swapper/023:47:060
134491460,3ptp4l0-21swapper/319:31:233
134491460,3ptp4l0-21swapper/222:19:512
134491460,3ptp4l0-21swapper/200:31:012
18586994540,3cyclictest33-21ksoftirqd/223:50:012
1858699452,4cyclictest0-21swapper/219:39:212
18586994518,4cyclictest33-21ksoftirqd/222:35:212
18586994515,4cyclictest33-21ksoftirqd/221:50:152
18586994514,5cyclictest33-21ksoftirqd/220:55:152
18586994513,9cyclictest33-21ksoftirqd/219:20:252
18586994513,5cyclictest33-21ksoftirqd/200:25:162
18586994512,6cyclictest33-21ksoftirqd/223:15:232
18586994511,6cyclictest33-21ksoftirqd/221:45:142
1858699450,3cyclictest121rcu_preempt22:10:252
1858699450,2cyclictest121rcu_preempt23:26:592
1858499459,9cyclictest0-21swapper/020:05:540
18584994514,9cyclictest1794-21taskset19:40:560
134491450,4ptp4l0-21swapper/323:38:113
134491450,4ptp4l0-21swapper/321:43:483
1858699440,2cyclictest121rcu_preempt20:44:592
18585994417,17cyclictest12080-21seq23:35:011
134491440,9ptp4l0-21swapper/323:10:233
134491440,8ptp4l0-21swapper/300:17:403
134491440,7ptp4l0-21swapper/319:05:193
134491440,5ptp4l0-21swapper/219:05:112
134491440,4ptp4l2427-21apt-get19:45:112
134491440,4ptp4l0-21swapper/320:49:123
134491440,3ptp4l0-21swapper/319:46:003
1858699434,6cyclictest33-21ksoftirqd/219:55:012
18586994315,7cyclictest33-21ksoftirqd/221:10:222
18586994314,3cyclictest33-21ksoftirqd/200:15:182
134491430,5ptp4l0-21swapper/119:05:551
134491430,4ptp4l0-21swapper/321:00:353
18586994210,3cyclictest33-21ksoftirqd/200:00:282
18585994216,12cyclictest2824-21taskset00:22:251
134491420,5ptp4l0-21swapper/320:55:293
134491420,4ptp4l16709-21df20:15:153
134491420,4ptp4l0-21swapper/322:49:243
134491420,3ptp4l18930-21apt-get22:40:143
134491420,3ptp4l0-21swapper/322:13:003
134491420,3ptp4l0-21swapper/321:45:073
134491420,3ptp4l0-21swapper/320:30:283
18586994136,3cyclictest33-21ksoftirqd/219:15:152
18586994136,3cyclictest33-21ksoftirqd/219:15:152
18586994135,3cyclictest33-21ksoftirqd/219:55:272
18585994117,10cyclictest27227-21taskset19:25:431
134491410,5ptp4l23896-21/usr/sbin/munin00:00:273
134491410,5ptp4l0-21swapper/320:40:183
134491410,5ptp4l0-21swapper/320:00:213
134491410,5ptp4l0-21swapper/319:10:263
134491410,4ptp4l27141-21ntp_states22:55:233
134491410,4ptp4l0-21swapper/323:00:253
134491410,4ptp4l0-21swapper/321:59:343
134491410,3ptp4l24171-21ls19:20:203
134491410,3ptp4l2318-21gnome-shell21:33:593
134491410,3ptp4l0-21swapper/319:54:013
1858699401,2cyclictest121rcu_preempt22:20:232
134491400,4ptp4l29397-21processes21:50:253
134491400,4ptp4l0-21swapper/321:20:203
134491400,4ptp4l0-21swapper/321:19:423
134491400,4ptp4l0-21swapper/320:20:283
134491400,4ptp4l0-21swapper/019:35:540
134491400,3ptp4l3867-21ntp_states22:05:233
134491400,3ptp4l0-21swapper/322:00:273
134491390,4ptp4l0-21swapper/323:25:183
134491390,4ptp4l0-21swapper/323:17:093
134491390,4ptp4l0-21swapper/323:05:193
134491390,4ptp4l0-21swapper/322:25:283
134491390,4ptp4l0-21swapper/321:29:073
134491390,4ptp4l0-21swapper/320:10:153
134491390,4ptp4l0-21swapper/319:40:223
134491390,4ptp4l0-21swapper/300:10:153
134491390,3ptp4l12218-21diskstats20:05:153
134491390,2ptp4l2325-21llvmpipe-221:37:593
134491380,5ptp4l0-21swapper/019:07:240
134491380,4ptp4l0-21swapper/320:25:263
134491380,4ptp4l0-21swapper/300:25:223
134491380,3ptp4l0-21swapper/321:05:273
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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