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2026-01-03 - 05:42
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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 rackdslot3.osadl.org (updated Sat Jan 03, 2026 00:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
308542203170,22sleep10-21swapper/119:09:061
139491203170,22phc2sys0-21swapper/319:08:583
309072202167,23sleep20-21swapper/219:09:472
306832202168,22sleep00-21swapper/019:06:510
31217996912,18cyclictest27925-21sed22:25:140
3121799590,26cyclictest8554-21/usr/sbin/munin00:00:220
172532580,6sleep13121899cyclictest00:15:241
172532580,6sleep13121899cyclictest00:15:241
139391570,1ptp4l401ktimersoftd/323:36:523
139391560,1ptp4l401ktimersoftd/319:40:323
3121799521,21cyclictest10229-21seq19:31:070
3121799511,21cyclictest2637-21grep22:40:130
3121799500,21cyclictest14997-21taskset21:55:350
3121799490,20cyclictest654-21taskset21:28:150
3121799480,28cyclictest7021-21taskset22:49:140
3121799480,28cyclictest7021-21taskset22:49:140
31219994711,34cyclictest8892-21kworker/2:019:55:242
3121799470,25cyclictest12609-21runrttasks19:36:120
3121799470,21cyclictest22281-21taskset22:11:430
139391460,0ptp4l401ktimersoftd/321:18:153
22572450,2sleep20-21swapper/222:39:552
139391450,0ptp4l401ktimersoftd/321:52:233
3121799440,19cyclictest32060-21runrttasks22:32:100
3092424433,5sleep30-21swapper/319:10:003
139391440,1ptp4l401ktimersoftd/323:31:033
31219994315,27cyclictest8892-21kworker/2:021:00:332
139391430,0ptp4l401ktimersoftd/300:36:543
139391420,1ptp4l401ktimersoftd/323:41:163
139391420,0ptp4l401ktimersoftd/320:08:423
139391410,0ptp4l401ktimersoftd/321:45:333
139391410,0ptp4l401ktimersoftd/321:45:333
31218994033,4cyclictest26374-21cron23:30:011
31218994011,27cyclictest0-21swapper/119:36:431
134391400,2getstats0-21swapper/321:25:063
3121799381,19cyclictest1317-21runrttasks23:06:240
139391380,0ptp4l401ktimersoftd/322:25:143
31220993731,4cyclictest41-21ksoftirqd/319:59:533
31218993730,5cyclictest25-21ksoftirqd/100:10:551
139391370,0ptp4l401ktimersoftd/321:00:293
139391370,0ptp4l401ktimersoftd/300:15:183
139391370,0ptp4l401ktimersoftd/300:15:183
31219993630,4cyclictest33-21ksoftirqd/222:40:352
31219993630,4cyclictest33-21ksoftirqd/221:26:382
31219993630,4cyclictest33-21ksoftirqd/220:27:162
31218993631,3cyclictest25-21ksoftirqd/120:15:161
31218993631,3cyclictest25-21ksoftirqd/120:15:161
31218993630,4cyclictest25-21ksoftirqd/122:52:211
31218993630,4cyclictest25-21ksoftirqd/119:44:151
31218993630,4cyclictest25-21ksoftirqd/100:33:341
31217993631,3cyclictest9-21ksoftirqd/020:50:000
31217993631,3cyclictest9-21ksoftirqd/020:50:000
31217993629,5cyclictest9-21ksoftirqd/021:34:420
3121799360,26cyclictest0-21swapper/020:29:190
3121799360,18cyclictest0-21swapper/019:58:020
57898350,1rtkit-daemon0-21swapper/122:16:571
57898350,1rtkit-daemon0-21swapper/122:16:561
31220993530,3cyclictest41-21ksoftirqd/320:00:253
31219993529,4cyclictest33-21ksoftirqd/223:04:102
31218993530,3cyclictest25-21ksoftirqd/122:00:101
31218993529,4cyclictest25-21ksoftirqd/123:45:531
31218993529,4cyclictest25-21ksoftirqd/123:45:531
31218993529,4cyclictest25-21ksoftirqd/121:37:231
31218993529,4cyclictest25-21ksoftirqd/121:22:471
31218993529,4cyclictest25-21ksoftirqd/121:06:361
31218993528,5cyclictest25-21ksoftirqd/123:35:501
31218993528,5cyclictest25-21ksoftirqd/121:18:541
31218993528,4cyclictest25-21ksoftirqd/122:30:311
31217993529,4cyclictest9-21ksoftirqd/000:20:050
3121799352,19cyclictest1317-21runrttasks19:51:120
31220993429,3cyclictest41-21ksoftirqd/322:05:123
31220993429,3cyclictest41-21ksoftirqd/321:57:123
31220993429,3cyclictest41-21ksoftirqd/320:13:593
31220993429,3cyclictest41-21ksoftirqd/300:21:333
31220993428,4cyclictest41-21ksoftirqd/323:24:533
31220993428,4cyclictest41-21ksoftirqd/321:23:373
31220993428,4cyclictest41-21ksoftirqd/319:54:523
31220993428,4cyclictest41-21ksoftirqd/300:31:203
31219993430,2cyclictest20415-21cron00:25:002
31219993429,3cyclictest33-21ksoftirqd/222:30:102
31219993428,4cyclictest33-21ksoftirqd/220:55:002
31219993428,4cyclictest33-21ksoftirqd/200:35:012
31219993428,3cyclictest33-21ksoftirqd/223:11:402
31219993427,5cyclictest33-21ksoftirqd/222:56:292
31219993427,5cyclictest33-21ksoftirqd/222:00:032
31219993427,5cyclictest33-21ksoftirqd/219:48:102
31218993428,4cyclictest25-21ksoftirqd/123:32:251
31218993428,4cyclictest25-21ksoftirqd/122:24:451
31218993428,4cyclictest25-21ksoftirqd/121:46:221
31218993428,4cyclictest25-21ksoftirqd/121:46:221
31218993428,4cyclictest25-21ksoftirqd/121:25:111
31218993428,4cyclictest25-21ksoftirqd/100:36:391
31218993428,4cyclictest25-21ksoftirqd/100:21:471
31218993428,3cyclictest2217-21cron20:25:001
3121799341,18cyclictest0-21swapper/022:51:480
3121799341,17cyclictest0-21swapper/020:35:230
3121799340,20cyclictest0-21swapper/020:13:390
1394913427,3phc2sys41-21ksoftirqd/320:31:343
31220993328,3cyclictest41-21ksoftirqd/322:44:053
31220993328,3cyclictest41-21ksoftirqd/320:19:443
31220993328,3cyclictest41-21ksoftirqd/320:19:433
31220993327,4cyclictest41-21ksoftirqd/323:59:223
31220993327,4cyclictest41-21ksoftirqd/323:03:023
31220993327,4cyclictest41-21ksoftirqd/322:49:223
31220993327,4cyclictest41-21ksoftirqd/322:49:223
31220993327,4cyclictest41-21ksoftirqd/320:51:123
31220993327,4cyclictest41-21ksoftirqd/320:21:443
31220993327,4cyclictest41-21ksoftirqd/319:16:213
31220993327,4cyclictest41-21ksoftirqd/300:10:143
31220993326,4cyclictest41-21ksoftirqd/322:35:103
31220993322,8cyclictest41-21ksoftirqd/319:37:153
31219993328,3cyclictest33-21ksoftirqd/223:35:142
31219993327,4cyclictest33-21ksoftirqd/223:58:092
31219993327,4cyclictest33-21ksoftirqd/223:53:042
31219993327,4cyclictest33-21ksoftirqd/222:51:382
31219993327,4cyclictest33-21ksoftirqd/221:53:452
31219993327,4cyclictest33-21ksoftirqd/221:40:382
31219993327,4cyclictest33-21ksoftirqd/220:22:232
31219993327,4cyclictest33-21ksoftirqd/220:16:532
31219993327,4cyclictest33-21ksoftirqd/220:16:532
31218993328,3cyclictest25-21ksoftirqd/123:51:131
31218993327,4cyclictest25-21ksoftirqd/122:56:581
31218993327,4cyclictest25-21ksoftirqd/121:53:561
31218993327,4cyclictest25-21ksoftirqd/121:30:581
31218993327,4cyclictest25-21ksoftirqd/120:07:061
31218993327,3cyclictest25-21ksoftirqd/120:10:031
31218993326,4cyclictest25-21ksoftirqd/122:37:451
31217993328,3cyclictest9-21ksoftirqd/021:40:010
31217993328,3cyclictest9-21ksoftirqd/019:21:160
31217993327,4cyclictest9-21ksoftirqd/023:30:030
31217993327,4cyclictest9-21ksoftirqd/022:17:020
31217993327,4cyclictest9-21ksoftirqd/022:17:020
31217993327,4cyclictest9-21ksoftirqd/000:12:390
3121799331,18cyclictest0-21swapper/021:02:570
3121799331,16cyclictest0-21swapper/023:40:190
3121799330,21cyclictest207-21systemd-journal22:20:400
3121799330,20cyclictest1317-21runrttasks20:08:010
3121799330,19cyclictest0-21swapper/021:40:200
31220993227,3cyclictest41-21ksoftirqd/320:25:143
31220993226,4cyclictest41-21ksoftirqd/323:13:293
31220993226,4cyclictest41-21ksoftirqd/322:12:133
31220993226,4cyclictest41-21ksoftirqd/320:46:113
31220993226,4cyclictest41-21ksoftirqd/320:46:113
31220993226,4cyclictest41-21ksoftirqd/319:24:393
31220993226,4cyclictest41-21ksoftirqd/300:29:193
31220993226,4cyclictest41-21ksoftirqd/300:07:533
31219993227,3cyclictest33-21ksoftirqd/222:25:072
31219993227,3cyclictest33-21ksoftirqd/222:10:212
31219993226,4cyclictest33-21ksoftirqd/223:44:132
31219993226,4cyclictest33-21ksoftirqd/223:15:332
31219993226,4cyclictest33-21ksoftirqd/223:15:332
31219993226,4cyclictest33-21ksoftirqd/222:20:332
31219993226,4cyclictest33-21ksoftirqd/221:24:132
31219993226,4cyclictest33-21ksoftirqd/200:13:422
31219993226,3cyclictest33-21ksoftirqd/223:07:332
31218993226,4cyclictest25-21ksoftirqd/123:08:541
31218993226,4cyclictest25-21ksoftirqd/121:57:171
31218993226,4cyclictest25-21ksoftirqd/120:59:251
31218993226,4cyclictest25-21ksoftirqd/120:26:031
31218993226,4cyclictest25-21ksoftirqd/119:14:381
31218993226,4cyclictest25-21ksoftirqd/100:25:321
31218993226,3cyclictest25-21ksoftirqd/123:40:141
31217993227,3cyclictest9-21ksoftirqd/023:55:100
31217993227,3cyclictest9-21ksoftirqd/021:15:110
31217993227,3cyclictest9-21ksoftirqd/019:14:370
31217993226,4cyclictest9-21ksoftirqd/020:30:120
31217993226,4cyclictest9-21ksoftirqd/019:46:230
3121799321,16cyclictest0-21swapper/023:35:240
3121799320,18cyclictest1317-21runrttasks20:01:310
3121799320,18cyclictest0-21swapper/022:05:200
3121799320,18cyclictest0-21swapper/021:24:150
3121799320,17cyclictest0-21swapper/000:15:190
3121799320,17cyclictest0-21swapper/000:15:190
139391320,1ptp4l401ktimersoftd/322:22:533
139391320,0ptp4l401ktimersoftd/319:27:403
31220993126,3cyclictest41-21ksoftirqd/323:49:213
31220993126,3cyclictest41-21ksoftirqd/323:49:213
31220993125,4cyclictest41-21ksoftirqd/323:52:003
31220993125,4cyclictest41-21ksoftirqd/323:19:353
31220993125,4cyclictest41-21ksoftirqd/323:19:353
31219993126,3cyclictest33-21ksoftirqd/221:55:142
31219993125,4cyclictest33-21ksoftirqd/223:47:182
31219993125,4cyclictest33-21ksoftirqd/223:47:182
31219993125,4cyclictest33-21ksoftirqd/223:27:362
3121999312,17cyclictest8892-21kworker/2:020:39:452
31218993126,3cyclictest25-21ksoftirqd/122:41:061
31218993125,4cyclictest25-21ksoftirqd/123:14:401
31218993125,4cyclictest25-21ksoftirqd/123:01:281
31218993125,4cyclictest25-21ksoftirqd/120:52:061
31218993125,4cyclictest25-21ksoftirqd/120:40:311
31218993125,4cyclictest25-21ksoftirqd/119:24:331
31217993126,3cyclictest9-21ksoftirqd/021:48:470
31217993126,3cyclictest9-21ksoftirqd/021:48:460
31217993126,3cyclictest9-21ksoftirqd/021:08:460
31217993126,3cyclictest9-21ksoftirqd/019:15:540
31217993125,4cyclictest9-21ksoftirqd/023:52:210
31217993125,4cyclictest9-21ksoftirqd/020:16:510
31217993125,4cyclictest9-21ksoftirqd/020:16:510
31217993125,4cyclictest9-21ksoftirqd/019:44:350
31217993124,5cyclictest9-21ksoftirqd/021:12:510
31217993112,16cyclictest13269-21latency_hist00:10:000
3121799310,19cyclictest0-21swapper/000:30:560
3121799310,18cyclictest0-21swapper/000:30:000
31220993025,3cyclictest41-21ksoftirqd/322:17:343
31220993025,3cyclictest41-21ksoftirqd/322:17:333
31220993025,3cyclictest41-21ksoftirqd/322:01:003
31220993025,3cyclictest41-21ksoftirqd/321:12:073
31220993025,3cyclictest41-21ksoftirqd/321:05:143
31220993024,4cyclictest41-21ksoftirqd/320:55:413
31220993024,4cyclictest41-21ksoftirqd/320:40:093
31219993025,3cyclictest33-21ksoftirqd/222:16:192
31219993025,3cyclictest33-21ksoftirqd/222:16:192
31219993025,3cyclictest33-21ksoftirqd/221:47:222
31219993025,3cyclictest33-21ksoftirqd/221:47:222
31219993025,3cyclictest33-21ksoftirqd/221:38:502
31219993025,3cyclictest33-21ksoftirqd/219:50:142
31219993025,3cyclictest33-21ksoftirqd/200:05:102
31219993024,4cyclictest33-21ksoftirqd/220:34:192
31219993024,4cyclictest33-21ksoftirqd/200:27:422
3121999300,19cyclictest24988-21kworker/2:223:34:002
31218993025,3cyclictest25-21ksoftirqd/121:12:451
31218993024,4cyclictest25-21ksoftirqd/120:47:491
31218993024,4cyclictest25-21ksoftirqd/120:47:491
31218993024,4cyclictest25-21ksoftirqd/119:31:551
31217993025,3cyclictest9-21ksoftirqd/020:20:280
31217993024,4cyclictest9-21ksoftirqd/023:27:300
31217993024,4cyclictest9-21ksoftirqd/023:23:370
31217993024,4cyclictest9-21ksoftirqd/023:16:510
31217993024,4cyclictest9-21ksoftirqd/023:16:510
31217993024,4cyclictest9-21ksoftirqd/022:59:060
31217993024,4cyclictest9-21ksoftirqd/020:50:530
139391300,0ptp4l401ktimersoftd/321:44:403
31219992924,3cyclictest33-21ksoftirqd/223:20:132
31219992924,3cyclictest33-21ksoftirqd/221:30:142
31219992924,3cyclictest33-21ksoftirqd/220:45:002
31219992924,3cyclictest33-21ksoftirqd/219:26:042
31219992923,4cyclictest33-21ksoftirqd/221:14:342
31219992923,4cyclictest33-21ksoftirqd/221:08:482
31219992923,4cyclictest33-21ksoftirqd/220:13:322
31219992923,4cyclictest33-21ksoftirqd/219:39:112
31219992923,4cyclictest33-21ksoftirqd/219:30:132
31218992924,3cyclictest25-21ksoftirqd/119:45:381
31218992923,4cyclictest25-21ksoftirqd/122:13:031
31218992923,4cyclictest25-21ksoftirqd/122:08:571
31218992923,4cyclictest25-21ksoftirqd/121:03:231
31218992923,4cyclictest25-21ksoftirqd/120:38:221
31218992923,4cyclictest25-21ksoftirqd/119:25:011
31218992923,4cyclictest25-21ksoftirqd/100:03:261
3121799299,17cyclictest18173-21grep23:10:200
31217992925,3cyclictest9-21ksoftirqd/022:01:450
31217992923,4cyclictest9-21ksoftirqd/023:01:310
31217992911,16cyclictest3093-21grep23:45:270
31217992911,16cyclictest3093-21grep23:45:270
31220992824,2cyclictest41-21ksoftirqd/323:09:573
31220992823,3cyclictest41-21ksoftirqd/319:48:423
31220992823,3cyclictest41-21ksoftirqd/300:01:113
31220992822,4cyclictest41-21ksoftirqd/319:32:013
3121999283,24cyclictest8892-21kworker/2:019:24:382
31219992823,3cyclictest33-21ksoftirqd/221:17:272
31219992823,3cyclictest33-21ksoftirqd/220:48:172
31219992823,3cyclictest33-21ksoftirqd/220:48:172
31219992823,3cyclictest33-21ksoftirqd/219:42:062
3121999282,25cyclictest8892-21kworker/2:022:49:532
3121999282,25cyclictest8892-21kworker/2:022:49:532
3121999282,25cyclictest24988-21kworker/2:200:03:052
31219992822,4cyclictest33-21ksoftirqd/220:55:362
31219992822,4cyclictest33-21ksoftirqd/220:01:452
31218992823,3cyclictest25-21ksoftirqd/123:18:191
31218992823,3cyclictest25-21ksoftirqd/123:18:191
31218992823,3cyclictest25-21ksoftirqd/120:33:211
31218992823,3cyclictest25-21ksoftirqd/100:07:071
31218992823,3cyclictest20055-21cron19:55:001
31217992823,3cyclictest9-21ksoftirqd/021:54:370
31217992822,4cyclictest9-21ksoftirqd/000:39:390
31220992722,3cyclictest41-21ksoftirqd/322:56:053
31220992722,3cyclictest41-21ksoftirqd/321:35:313
31220992721,4cyclictest41-21ksoftirqd/322:52:553
31219992721,4cyclictest33-21ksoftirqd/200:38:452
3121999271,25cyclictest24988-21kworker/2:200:19:372
3121999271,25cyclictest24988-21kworker/2:200:19:372
31218992722,3cyclictest25-21ksoftirqd/119:55:331
3121799276,18cyclictest10865-21phc2sys-jitter20:40:210
139391270,9ptp4l401ktimersoftd/320:38:423
139391270,0ptp4l401ktimersoftd/322:31:423
31220992621,3cyclictest41-21ksoftirqd/323:28:543
31219992621,3cyclictest33-21ksoftirqd/219:19:392
31219992620,4cyclictest33-21ksoftirqd/220:06:542
31218992621,3cyclictest25-21ksoftirqd/123:57:271
31218992621,3cyclictest25-21ksoftirqd/119:18:201
31218992620,4cyclictest25-21ksoftirqd/122:29:551
31217992621,3cyclictest9-21ksoftirqd/022:35:070
31217992621,3cyclictest9-21ksoftirqd/019:28:100
3121799260,23cyclictest17510-21cut20:55:200
139391250,0ptp4l401ktimersoftd/321:30:113
31218992318,3cyclictest25-21ksoftirqd/123:22:081
31218992318,3cyclictest25-21ksoftirqd/122:49:581
31218992318,3cyclictest25-21ksoftirqd/122:49:581
3121999222,19cyclictest8892-21kworker/2:022:08:442
31219992116,3cyclictest33-21ksoftirqd/219:10:352
31218992116,3cyclictest25-21ksoftirqd/121:40:581
31218991610,4cyclictest23681-21kernelversion20:00:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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