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2026-04-12 - 15:03
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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 rackdslot4.osadl.org (updated Sun Apr 12, 2026 00:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36682209176,22sleep10-21swapper/119:08:161
138591205171,23phc2sys0-21swapper/319:07:123
35612204169,23sleep00-21swapper/019:06:580
36942202169,21sleep20-21swapper/219:08:372
138491780,1ptp4l391rcuc/322:15:263
138491780,1ptp4l391rcuc/322:15:253
122972660,7sleep1409599cyclictest20:30:191
43842570,2sleep20-21swapper/222:25:132
235362540,5sleep2409699cyclictest00:07:392
138491530,1ptp4l391rcuc/322:25:133
138491520,5ptp4l409799cyclictest00:28:233
138491500,1ptp4l391rcuc/322:48:443
50798460,11rtkit-daemon0-21swapper/023:25:510
138491440,1ptp4l391rcuc/300:35:193
138491440,0ptp4l401ktimersoftd/320:37:533
138491420,0ptp4l401ktimersoftd/300:33:533
409499414,3cyclictest309752sshd00:22:500
138491410,0ptp4l401ktimersoftd/323:08:133
138491410,0ptp4l401ktimersoftd/320:47:533
138491410,0ptp4l401ktimersoftd/300:13:533
409799401,36cyclictest20817-21cron00:05:003
203992400,4sleep20-21swapper/222:55:262
409799391,35cyclictest23756-21cron20:55:003
4094993932,4cyclictest9-21ksoftirqd/000:31:040
4097993832,4cyclictest41-21ksoftirqd/323:31:293
4094993832,3cyclictest9-21ksoftirqd/020:45:000
4094993832,3cyclictest9-21ksoftirqd/020:45:000
138491380,0ptp4l401ktimersoftd/323:00:003
4097993732,3cyclictest41-21ksoftirqd/320:15:113
4097993731,4cyclictest41-21ksoftirqd/322:23:023
4097993730,5cyclictest32120-21irqrtprio21:10:203
409699376,2cyclictest12560-21cat23:45:242
409499373,3cyclictest265482cat19:55:010
4094993730,4cyclictest9-21ksoftirqd/023:44:590
4094993730,4cyclictest9-21ksoftirqd/023:44:590
4097993630,4cyclictest41-21ksoftirqd/320:07:033
4097993630,4cyclictest41-21ksoftirqd/319:38:093
4097993629,5cyclictest41-21ksoftirqd/321:04:223
4096993630,4cyclictest33-21ksoftirqd/223:56:132
4096993630,4cyclictest33-21ksoftirqd/223:00:552
4096993630,4cyclictest33-21ksoftirqd/221:24:472
4096993622,5cyclictest33-21ksoftirqd/222:06:322
4095993630,4cyclictest25-21ksoftirqd/123:31:231
4095993630,4cyclictest25-21ksoftirqd/122:55:331
4095993629,4cyclictest25-21ksoftirqd/119:53:251
4094993630,4cyclictest9-21ksoftirqd/019:37:110
4094993629,4cyclictest9-21ksoftirqd/000:15:070
4097993530,3cyclictest41-21ksoftirqd/323:10:103
4097993530,3cyclictest41-21ksoftirqd/322:15:003
4097993529,4cyclictest41-21ksoftirqd/323:27:323
4097993529,4cyclictest41-21ksoftirqd/322:53:463
4097993529,4cyclictest41-21ksoftirqd/321:16:153
4097993529,4cyclictest41-21ksoftirqd/321:05:443
4097993529,4cyclictest41-21ksoftirqd/319:31:433
4097993529,4cyclictest41-21ksoftirqd/300:18:083
4097993528,5cyclictest41-21ksoftirqd/319:45:123
4097993528,5cyclictest41-21ksoftirqd/319:16:403
4096993530,3cyclictest33-21ksoftirqd/222:04:532
4096993530,3cyclictest33-21ksoftirqd/221:11:072
4096993529,4cyclictest33-21ksoftirqd/221:50:112
4096993528,4cyclictest33-21ksoftirqd/219:15:132
4096993520,5cyclictest33-21ksoftirqd/220:56:202
4095993529,4cyclictest25-21ksoftirqd/123:57:391
4095993529,4cyclictest25-21ksoftirqd/123:40:421
4095993529,4cyclictest25-21ksoftirqd/123:40:421
4095993529,4cyclictest25-21ksoftirqd/123:25:001
4095993529,4cyclictest25-21ksoftirqd/123:19:121
4095993529,4cyclictest25-21ksoftirqd/122:53:401
4095993529,4cyclictest25-21ksoftirqd/122:32:311
4095993529,4cyclictest25-21ksoftirqd/122:10:041
4095993529,4cyclictest25-21ksoftirqd/120:46:481
4095993529,4cyclictest25-21ksoftirqd/120:25:371
4095993529,4cyclictest25-21ksoftirqd/119:24:241
4095993529,4cyclictest25-21ksoftirqd/100:15:291
4095993529,3cyclictest25-21ksoftirqd/121:35:101
4095993529,3cyclictest25-21ksoftirqd/121:30:001
4095993528,4cyclictest25-21ksoftirqd/121:31:081
4094993529,4cyclictest9-21ksoftirqd/023:12:530
4094993529,4cyclictest9-21ksoftirqd/019:19:460
4094993529,4cyclictest9-21ksoftirqd/000:08:210
4094993529,3cyclictest9-21ksoftirqd/022:30:120
4097993429,3cyclictest41-21ksoftirqd/319:55:013
4097993428,4cyclictest41-21ksoftirqd/321:52:013
4097993428,4cyclictest41-21ksoftirqd/321:43:063
4097993428,4cyclictest41-21ksoftirqd/320:32:063
4097993428,4cyclictest41-21ksoftirqd/319:26:433
4097993428,4cyclictest41-21ksoftirqd/319:21:173
4096993429,3cyclictest33-21ksoftirqd/223:15:162
4096993429,3cyclictest20057-21irqrtprio19:40:182
4096993428,4cyclictest33-21ksoftirqd/222:12:222
4096993428,4cyclictest33-21ksoftirqd/221:26:092
4096993428,4cyclictest33-21ksoftirqd/220:26:072
4096993428,4cyclictest33-21ksoftirqd/200:14:092
4095993429,3cyclictest25-21ksoftirqd/122:29:011
4095993428,4cyclictest25-21ksoftirqd/123:49:001
4095993428,4cyclictest25-21ksoftirqd/123:02:071
4095993428,4cyclictest25-21ksoftirqd/122:46:101
4095993428,4cyclictest25-21ksoftirqd/121:14:201
4095993428,4cyclictest25-21ksoftirqd/120:20:071
4095993428,4cyclictest25-21ksoftirqd/119:58:101
4095993428,4cyclictest25-21ksoftirqd/119:47:061
4094993428,4cyclictest9-21ksoftirqd/022:42:240
4094993428,4cyclictest9-21ksoftirqd/020:49:150
4094993428,4cyclictest9-21ksoftirqd/000:25:580
4094993427,4cyclictest9-21ksoftirqd/022:47:180
4097993328,3cyclictest41-21ksoftirqd/323:42:373
4097993328,3cyclictest41-21ksoftirqd/323:42:373
4097993328,3cyclictest41-21ksoftirqd/322:57:483
4097993328,3cyclictest41-21ksoftirqd/322:40:103
4097993328,3cyclictest41-21ksoftirqd/320:10:123
4097993327,4cyclictest41-21ksoftirqd/320:26:193
4097993327,4cyclictest41-21ksoftirqd/319:40:463
4097993315,16cyclictest41-21ksoftirqd/322:00:013
4096993328,3cyclictest33-21ksoftirqd/221:30:312
4096993327,4cyclictest33-21ksoftirqd/223:41:082
4096993327,4cyclictest33-21ksoftirqd/223:41:082
4096993327,4cyclictest33-21ksoftirqd/223:11:532
4096993327,4cyclictest33-21ksoftirqd/223:09:182
409599335,27cyclictest0-21swapper/122:15:331
409599335,27cyclictest0-21swapper/122:15:331
4095993328,3cyclictest25-21ksoftirqd/123:38:501
4095993328,3cyclictest25-21ksoftirqd/100:10:301
4095993327,4cyclictest25-21ksoftirqd/123:27:101
4095993327,4cyclictest25-21ksoftirqd/123:07:571
4095993327,4cyclictest25-21ksoftirqd/122:06:551
4095993327,4cyclictest25-21ksoftirqd/121:55:561
4095993327,4cyclictest25-21ksoftirqd/121:50:311
4095993327,4cyclictest25-21ksoftirqd/121:06:051
4095993327,4cyclictest25-21ksoftirqd/120:42:311
4095993327,4cyclictest25-21ksoftirqd/120:42:311
4095993327,4cyclictest25-21ksoftirqd/100:36:421
4095993326,5cyclictest25-21ksoftirqd/120:13:501
4095993326,4cyclictest25-21ksoftirqd/119:28:291
4095993310,20cyclictest9165-21ls22:35:141
4094993328,3cyclictest9-21ksoftirqd/019:26:070
4094993327,4cyclictest9-21ksoftirqd/023:56:150
4094993327,4cyclictest9-21ksoftirqd/023:48:400
4094993327,4cyclictest9-21ksoftirqd/022:15:090
4094993327,4cyclictest9-21ksoftirqd/022:15:080
4097993226,4cyclictest41-21ksoftirqd/319:10:503
4097993226,4cyclictest41-21ksoftirqd/300:20:053
4096993227,3cyclictest33-21ksoftirqd/221:43:562
4096993227,3cyclictest33-21ksoftirqd/221:38:502
4096993227,3cyclictest33-21ksoftirqd/221:00:432
4096993227,3cyclictest33-21ksoftirqd/220:24:352
4096993226,4cyclictest33-21ksoftirqd/221:08:152
4096993226,3cyclictest33-21ksoftirqd/200:05:012
409599329,21cyclictest8868-21sed19:20:001
4095993227,3cyclictest25-21ksoftirqd/121:45:081
4095993226,4cyclictest25-21ksoftirqd/122:41:211
4095993226,4cyclictest25-21ksoftirqd/120:57:181
4095993225,4cyclictest25-21ksoftirqd/121:00:151
4095993212,17cyclictest5503-21swap21:20:251
4094993228,3cyclictest9-21ksoftirqd/020:00:520
138491320,0ptp4l401ktimersoftd/321:22:293
4097993125,4cyclictest41-21ksoftirqd/321:36:203
4096993126,3cyclictest33-21ksoftirqd/222:37:132
4096993126,3cyclictest33-21ksoftirqd/221:59:592
4096993126,3cyclictest33-21ksoftirqd/221:18:302
4096993126,3cyclictest33-21ksoftirqd/220:41:322
4096993126,3cyclictest33-21ksoftirqd/220:41:322
4096993126,3cyclictest33-21ksoftirqd/220:17:332
4096993126,3cyclictest33-21ksoftirqd/219:56:482
4096993126,3cyclictest33-21ksoftirqd/200:32:022
4096993125,4cyclictest33-21ksoftirqd/221:46:302
4096993125,4cyclictest33-21ksoftirqd/220:04:242
4096993117,4cyclictest33-21ksoftirqd/220:52:312
4095993126,3cyclictest25-21ksoftirqd/122:22:551
4095993126,3cyclictest25-21ksoftirqd/120:52:311
4095993126,3cyclictest25-21ksoftirqd/100:07:501
4095993125,4cyclictest25-21ksoftirqd/120:02:511
4094993126,3cyclictest9-21ksoftirqd/023:50:290
4094993126,3cyclictest9-21ksoftirqd/023:31:260
4094993126,3cyclictest9-21ksoftirqd/023:20:100
4094993125,4cyclictest9-21ksoftirqd/022:38:110
4094993125,4cyclictest9-21ksoftirqd/022:27:120
4094993125,4cyclictest9-21ksoftirqd/021:48:120
4094993125,4cyclictest9-21ksoftirqd/019:43:170
4094993125,4cyclictest9-21ksoftirqd/000:02:000
138491310,0ptp4l401ktimersoftd/322:05:043
4097993025,3cyclictest41-21ksoftirqd/323:52:503
4097993024,4cyclictest41-21ksoftirqd/321:49:243
4096993025,3cyclictest33-21ksoftirqd/219:51:582
4096993025,3cyclictest33-21ksoftirqd/219:32:492
4096993024,4cyclictest33-21ksoftirqd/222:24:212
4096993024,4cyclictest33-21ksoftirqd/219:14:242
4096993024,3cyclictest21592-21cron19:49:562
409699300,2cyclictest0-21swapper/223:35:252
4095993026,3cyclictest25-21ksoftirqd/123:53:431
4095993024,4cyclictest25-21ksoftirqd/100:24:161
4095993019,9cyclictest25-21ksoftirqd/100:31:321
4094993025,3cyclictest9-21ksoftirqd/019:23:140
4094993025,3cyclictest9-21ksoftirqd/000:37:060
4094993024,4cyclictest9-21ksoftirqd/021:54:000
4094993024,4cyclictest9-21ksoftirqd/021:35:370
4094993024,4cyclictest9-21ksoftirqd/020:05:520
138491300,0ptp4l401ktimersoftd/323:38:193
138491300,0ptp4l401ktimersoftd/323:17:493
4097992924,3cyclictest41-21ksoftirqd/323:24:043
4097992923,4cyclictest41-21ksoftirqd/323:48:263
409799290,2cyclictest121rcu_preempt20:56:193
4096992923,4cyclictest33-21ksoftirqd/223:27:122
4096992923,4cyclictest33-21ksoftirqd/223:22:222
4096992923,4cyclictest33-21ksoftirqd/222:48:332
4096992923,4cyclictest33-21ksoftirqd/220:10:552
4096992923,4cyclictest33-21ksoftirqd/219:37:372
4096992923,4cyclictest33-21ksoftirqd/219:25:202
409599296,4cyclictest4967-21irqrtprio19:10:181
4095992923,4cyclictest25-21ksoftirqd/121:15:041
4095992923,4cyclictest25-21ksoftirqd/119:42:281
4095992922,5cyclictest25-21ksoftirqd/119:38:311
4095992910,17cyclictest15415-21phc2sys-jitter20:35:231
4094992924,3cyclictest9-21ksoftirqd/023:17:070
4094992924,3cyclictest9-21ksoftirqd/021:24:050
4094992924,3cyclictest9-21ksoftirqd/021:11:450
4094992923,4cyclictest9-21ksoftirqd/022:01:480
4094992923,4cyclictest9-21ksoftirqd/021:34:490
4094992923,4cyclictest9-21ksoftirqd/021:16:110
4094992923,4cyclictest9-21ksoftirqd/020:53:010
4094992923,4cyclictest9-21ksoftirqd/019:34:100
138491290,0ptp4l401ktimersoftd/321:33:533
138491290,0ptp4l401ktimersoftd/321:25:563
138491290,0ptp4l401ktimersoftd/320:02:573
138491290,0ptp4l401ktimersoftd/300:08:143
4097992823,3cyclictest41-21ksoftirqd/322:33:193
4097992823,3cyclictest41-21ksoftirqd/322:00:553
4096992823,3cyclictest33-21ksoftirqd/220:07:082
4096992823,3cyclictest33-21ksoftirqd/200:16:282
4096992822,4cyclictest33-21ksoftirqd/223:34:382
4096992822,4cyclictest33-21ksoftirqd/219:21:072
4096992814,3cyclictest8590-21dump-pmu-power22:35:002
409599289,16cyclictest14402-21df_abs19:30:121
409599286,3cyclictest5757-21grep20:15:241
409599286,3cyclictest26411-21expr23:10:141
409599285,3cyclictest672-21gdbus21:40:241
4095992823,3cyclictest25-21ksoftirqd/100:27:121
4095992822,4cyclictest25-21ksoftirqd/122:03:551
4095992810,16cyclictest31686-21apt-get20:05:111
4094992823,3cyclictest9-21ksoftirqd/023:08:420
4094992823,3cyclictest9-21ksoftirqd/021:02:080
4094992822,4cyclictest9-21ksoftirqd/022:10:120
4094992822,4cyclictest9-21ksoftirqd/020:56:020
4096992722,3cyclictest33-21ksoftirqd/223:54:062
4096992722,3cyclictest33-21ksoftirqd/200:29:292
4096992721,4cyclictest33-21ksoftirqd/222:54:142
4096992721,4cyclictest33-21ksoftirqd/222:15:202
4096992721,4cyclictest33-21ksoftirqd/222:15:192
4096992720,4cyclictest33-21ksoftirqd/220:39:142
4094992722,3cyclictest9-21ksoftirqd/021:40:130
4094992722,3cyclictest9-21ksoftirqd/000:12:240
4094992721,4cyclictest9-21ksoftirqd/022:23:430
4094992721,4cyclictest9-21ksoftirqd/022:08:390
4097992621,3cyclictest41-21ksoftirqd/323:56:093
4097992621,3cyclictest41-21ksoftirqd/320:41:433
4097992621,3cyclictest41-21ksoftirqd/320:41:433
4097992620,4cyclictest41-21ksoftirqd/322:36:533
4096992622,2cyclictest33-21ksoftirqd/220:34:592
409599262,4cyclictest19327-21/usr/sbin/munin00:00:181
4094992621,3cyclictest9-21ksoftirqd/022:54:120
4094992621,3cyclictest9-21ksoftirqd/021:59:590
4094992621,3cyclictest9-21ksoftirqd/020:35:510
4094992621,3cyclictest9-21ksoftirqd/019:47:220
4096992520,3cyclictest33-21ksoftirqd/222:42:312
4096992520,3cyclictest33-21ksoftirqd/200:24:252
4094992520,3cyclictest9-21ksoftirqd/023:35:480
4094992520,3cyclictest9-21ksoftirqd/023:03:560
4094992520,3cyclictest9-21ksoftirqd/021:09:270
4094992520,3cyclictest9-21ksoftirqd/019:58:280
4096992419,3cyclictest33-21ksoftirqd/220:49:462
4094992419,3cyclictest9-21ksoftirqd/020:10:290
4094992417,5cyclictest9-21ksoftirqd/021:27:360
50798230,8rtkit-daemon0-21swapper/019:14:520
4096992318,3cyclictest33-21ksoftirqd/200:35:252
138491230,0ptp4l401ktimersoftd/320:20:093
138491230,0ptp4l401ktimersoftd/319:55:083
4094992217,3cyclictest9-21ksoftirqd/022:59:370
4094992015,3cyclictest9394-21cstates20:25:140
4094992015,3cyclictest7460-21iostat20:20:160
4094991916,2cyclictest9-21ksoftirqd/020:15:190
4094991813,3cyclictest13526-21seq20:30:500
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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