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2026-06-12 - 04:17
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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 Fri Jun 12, 2026 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1457221520,8sleep02442999cyclictest23:25:170
1495421360,3sleep30-21swapper/323:25:213
12672650,6sleep30-21swapper/322:55:283
134491640,6ptp4l0-21swapper/219:25:252
134491620,3ptp4l0-21swapper/022:50:290
134491590,4ptp4l15698-21/usr/sbin/munin20:00:170
134491580,4ptp4l0-21swapper/000:29:050
134491570,3ptp4l0-21swapper/321:40:303
134491550,4ptp4l0-21swapper/000:04:510
134491550,3ptp4l0-21swapper/321:25:373
134491550,19ptp4l0-21swapper/223:30:242
134491550,16ptp4l0-21swapper/221:09:092
134491550,16ptp4l0-21swapper/221:09:092
54362530,3sleep30-21swapper/320:45:263
134491530,4ptp4l0-21swapper/319:10:103
134491530,4ptp4l0-21swapper/022:32:550
134491530,3ptp4l17203-21ssh21:10:263
134491530,3ptp4l0-21swapper/219:35:222
24432995214,3cyclictest41-21ksoftirqd/319:20:273
134491520,5ptp4l0-21swapper/323:39:583
134491520,5ptp4l0-21swapper/019:09:430
134491520,3ptp4l0-21swapper/222:30:332
134491520,3ptp4l0-21swapper/221:58:582
134491520,11ptp4l0-21swapper/220:36:202
134491510,4ptp4l0-21swapper/022:35:540
134491510,4ptp4l0-21swapper/021:45:100
134491510,4ptp4l0-21swapper/019:40:420
134491510,11ptp4l0-21swapper/319:59:183
134491500,9ptp4l0-21swapper/223:54:152
134491500,4ptp4l0-21swapper/322:54:223
134491500,4ptp4l0-21swapper/320:16:443
134491500,4ptp4l0-21swapper/300:16:423
134491500,4ptp4l0-21swapper/200:20:092
134491500,4ptp4l0-21swapper/200:11:272
134491500,4ptp4l0-21swapper/023:42:310
134491500,4ptp4l0-21swapper/021:11:430
134491500,4ptp4l0-21swapper/020:40:060
134491500,4ptp4l0-21swapper/000:07:100
134491490,5ptp4l0-21swapper/021:23:420
134491490,4ptp4l0-21swapper/322:15:003
134491490,4ptp4l0-21swapper/223:03:182
134491490,4ptp4l0-21swapper/221:21:102
134491490,4ptp4l0-21swapper/023:08:090
134491490,4ptp4l0-21swapper/022:46:320
134491490,4ptp4l0-21swapper/019:32:180
134491490,3ptp4l0-21swapper/200:29:142
134491490,15ptp4l0-21swapper/219:50:012
134491480,4ptp4l0-21swapper/323:41:023
134491480,4ptp4l0-21swapper/319:51:483
134491480,4ptp4l0-21swapper/023:50:210
134491480,4ptp4l0-21swapper/023:20:260
134491480,3ptp4l0-21swapper/222:51:572
134491480,10ptp4l0-21swapper/219:42:042
2443299473,2cyclictest121rcu_preempt22:03:203
2443299473,2cyclictest121rcu_preempt22:03:203
2443199471,44cyclictest5642-21kworker/2:123:25:272
134491470,4ptp4l0-21swapper/320:26:183
134491470,4ptp4l0-21swapper/319:37:163
24432994610,9cyclictest41-21ksoftirqd/319:47:363
134491460,4ptp4l0-21swapper/321:02:473
134491460,4ptp4l0-21swapper/320:06:503
134491460,4ptp4l0-21swapper/119:07:111
134491460,3ptp4l0-21swapper/321:50:283
134491460,3ptp4l0-21swapper/220:17:012
134491460,3ptp4l0-21swapper/220:11:582
134491460,19ptp4l0-21swapper/323:50:183
2443299451,2cyclictest121rcu_preempt22:40:143
2443299451,2cyclictest121rcu_preempt22:40:143
134491450,7ptp4l0-21swapper/219:16:312
134491450,4ptp4l17071-21chrt20:02:463
134491450,4ptp4l0-21swapper/219:12:172
134491450,4ptp4l0-21swapper/023:35:260
134491450,4ptp4l0-21swapper/022:44:590
134491450,4ptp4l0-21swapper/022:44:590
134491450,3ptp4l0-21swapper/322:39:573
134491450,3ptp4l0-21swapper/320:33:443
134491450,3ptp4l0-21swapper/223:37:082
134491450,3ptp4l0-21swapper/223:22:542
134491450,3ptp4l0-21swapper/200:02:082
134491450,3ptp4l0-21swapper/021:00:230
134491450,12ptp4l0-21swapper/223:06:532
2443299449,8cyclictest41-21ksoftirqd/300:09:413
2443299441,3cyclictest121rcu_preempt21:58:283
134491440,6ptp4l0-21swapper/000:14:250
134491440,5ptp4l6462-21apt-get22:00:122
134491440,5ptp4l6462-21apt-get22:00:122
134491440,5ptp4l0-21swapper/219:08:392
2443299437,4cyclictest41-21ksoftirqd/321:36:443
2443299434,3cyclictest121rcu_preempt23:18:303
2443299434,3cyclictest121rcu_preempt23:18:303
24432994337,3cyclictest41-21ksoftirqd/319:18:593
134491430,9ptp4l0-21swapper/022:01:070
134491430,9ptp4l0-21swapper/022:01:070
134491430,9ptp4l0-21swapper/021:38:580
134491430,5ptp4l0-21swapper/021:30:130
134491430,4ptp4l1423-21apt-get20:40:122
134491430,4ptp4l0-21swapper/322:27:373
134491430,4ptp4l0-21swapper/023:15:000
134491430,10ptp4l24981-21if_err_enp1s019:10:160
2443299422,3cyclictest121rcu_preempt22:32:073
2443299420,2cyclictest121rcu_preempt23:01:063
134491420,5ptp4l5864-21iostat00:15:180
134491420,5ptp4l0-21swapper/222:45:132
134491420,5ptp4l0-21swapper/219:20:192
134491420,5ptp4l0-21swapper/020:15:160
134491420,4ptp4l21127-21apt-get23:40:142
134491420,4ptp4l0-21swapper/322:49:113
134491420,4ptp4l0-21swapper/320:59:463
134491420,4ptp4l0-21swapper/319:34:523
134491420,4ptp4l0-21swapper/222:55:032
134491420,3ptp4l18035-21apt-get22:25:172
134491420,3ptp4l14511-21apt-get00:35:113
134491420,3ptp4l101ktimersoftd/000:33:470
134491420,3ptp4l0-21swapper/220:01:482
2443299412,3cyclictest121rcu_preempt00:25:453
24432994112,3cyclictest41-21ksoftirqd/323:30:273
2443299410,2cyclictest121rcu_preempt19:25:303
134491410,5ptp4l0-21swapper/322:05:443
134491410,4ptp4l3828-21df19:35:140
134491410,4ptp4l31795-21apt-get22:55:011
134491410,4ptp4l23179-21apt-get23:45:032
134491410,4ptp4l22240-21ntp_states23:40:241
134491410,4ptp4l18069-21apt-get21:15:142
134491410,4ptp4l14251-21irqstats22:15:182
134491410,4ptp4l0-21swapper/200:30:322
134491410,4ptp4l0-21swapper/200:15:282
134491410,4ptp4l0-21swapper/023:30:170
134491410,4ptp4l0-21swapper/022:15:100
134491410,3ptp4l22372-21apt-get22:35:022
134491410,3ptp4l18352-21apt-get23:35:041
134491410,3ptp4l13023-21apt-get21:05:023
134491410,3ptp4l13023-21apt-get21:05:023
134491410,3ptp4l0-21swapper/321:45:123
134491410,3ptp4l0-21swapper/200:06:242
24432994035,3cyclictest41-21ksoftirqd/321:20:003
24432994035,3cyclictest41-21ksoftirqd/319:40:223
2443299400,2cyclictest121rcu_preempt22:15:203
134491400,5ptp4l14056-21/usr/sbin/munin19:55:232
134491400,5ptp4l0-21swapper/321:30:123
134491400,5ptp4l0-21swapper/221:25:242
134491400,5ptp4l0-21swapper/220:30:122
134491400,5ptp4l0-21swapper/220:20:282
134491400,5ptp4l0-21swapper/023:45:170
134491400,5ptp4l0-21swapper/021:09:020
134491400,5ptp4l0-21swapper/021:09:020
134491400,4ptp4l3540-21apt-get20:45:022
134491400,4ptp4l24985-21apt-get21:30:122
134491400,4ptp4l12606-21ntp_states23:20:233
134491400,4ptp4l0-21swapper/320:20:273
134491400,4ptp4l0-21swapper/223:11:192
134491400,4ptp4l0-21swapper/120:35:121
134491400,4ptp4l0-21swapper/100:10:181
134491400,4ptp4l0-21swapper/023:16:230
134491400,4ptp4l0-21swapper/023:16:230
134491400,4ptp4l0-21swapper/023:00:170
134491400,4ptp4l0-21swapper/022:26:230
134491400,4ptp4l0-21swapper/022:12:500
134491400,4ptp4l0-21swapper/022:09:120
134491400,4ptp4l0-21swapper/021:56:260
134491400,4ptp4l0-21swapper/021:53:110
134491400,3ptp4l9592-21meminfo20:55:190
134491400,3ptp4l8815-21apt-get22:05:122
134491400,3ptp4l8645-21apt-get20:55:122
134491400,3ptp4l8298-21ls23:10:253
134491400,3ptp4l10960-21apt-get21:00:112
134491400,3ptp4l0-21swapper/323:05:213
134491400,3ptp4l0-21swapper/322:20:403
2443299396,3cyclictest41-21ksoftirqd/320:37:213
2443299394,2cyclictest121rcu_preempt00:10:333
2443099393,2cyclictest121rcu_preempt21:50:011
134491390,5ptp4l30875-21fgrep21:40:250
134491390,5ptp4l1358-21grep19:30:132
134491390,5ptp4l0-21swapper/220:50:122
134491390,5ptp4l0-21swapper/119:10:271
134491390,5ptp4l0-21swapper/020:26:340
134491390,4ptp4l29569-21sensors_temp23:55:242
134491390,4ptp4l20884-21/usr/sbin/munin21:20:163
134491390,4ptp4l15346-21sed00:35:212
134491390,4ptp4l0-21swapper/323:45:233
134491390,4ptp4l0-21swapper/320:40:153
134491390,4ptp4l0-21swapper/320:12:243
134491390,4ptp4l0-21swapper/300:30:153
134491390,4ptp4l0-21swapper/300:20:113
134491390,4ptp4l0-21swapper/223:15:172
134491390,4ptp4l0-21swapper/223:15:172
134491390,4ptp4l0-21swapper/222:41:222
134491390,4ptp4l0-21swapper/222:41:222
134491390,4ptp4l0-21swapper/121:30:131
134491390,4ptp4l0-21swapper/120:05:221
134491390,4ptp4l0-21swapper/023:56:370
134491390,4ptp4l0-21swapper/022:55:090
134491390,4ptp4l0-21swapper/022:20:050
134491390,4ptp4l0-21swapper/021:25:060
134491390,4ptp4l0-21swapper/020:36:560
134491390,4ptp4l0-21swapper/020:22:280
134491390,4ptp4l0-21swapper/020:10:110
134491390,4ptp4l0-21swapper/020:05:120
134491390,4ptp4l0-21swapper/019:45:020
134491390,4ptp4l0-21swapper/019:26:380
134491390,3ptp4l29217-21df20:30:140
134491390,3ptp4l16074-21df_inode21:10:152
134491390,3ptp4l15730-21apt-get22:20:112
134491390,3ptp4l0-21swapper/021:15:500
24432993831,4cyclictest41-21ksoftirqd/320:50:273
24430993832,4cyclictest25-21ksoftirqd/123:32:531
24430993832,3cyclictest25-21ksoftirqd/120:00:181
24430993831,4cyclictest25-21ksoftirqd/100:30:131
134491380,4ptp4l26710-21apt-get20:25:102
134491380,4ptp4l0-21swapper/323:55:203
134491380,4ptp4l0-21swapper/221:50:172
134491380,4ptp4l0-21swapper/221:35:142
134491380,4ptp4l0-21swapper/123:50:191
134491380,4ptp4l0-21swapper/123:02:111
134491380,4ptp4l0-21swapper/121:04:131
134491380,4ptp4l0-21swapper/100:08:021
134491380,4ptp4l0-21swapper/020:46:490
134491380,4ptp4l0-21swapper/019:56:440
134491380,4ptp4l0-21swapper/019:54:280
134491380,4ptp4l0-21swapper/019:21:190
134491380,4ptp4l0-21swapper/019:17:140
134491380,4ptp4l0-21swapper/000:36:090
134491380,3ptp4l0-21swapper/300:00:293
134491380,3ptp4l0-21swapper/222:10:152
134491380,3ptp4l0-21swapper/221:45:032
134491380,3ptp4l0-21swapper/120:22:581
134491380,3ptp4l0-21swapper/100:03:371
134491380,3ptp4l0-21swapper/020:50:220
134491380,3ptp4l0-21swapper/000:21:140
134491370,4ptp4l0-21swapper/220:05:252
134491370,4ptp4l0-21swapper/123:09:171
134491370,4ptp4l0-21swapper/120:44:001
134491370,3ptp4l0-21swapper/221:40:262
134491370,3ptp4l0-21swapper/219:50:282
134491370,3ptp4l0-21swapper/123:22:501
134491370,3ptp4l0-21swapper/123:16:261
134491370,3ptp4l0-21swapper/123:16:261
134491370,3ptp4l0-21swapper/100:26:171
134491360,5ptp4l0-21swapper/319:08:003
134491360,4ptp4l0-21swapper/122:44:571
134491360,4ptp4l0-21swapper/122:44:571
134491360,4ptp4l0-21swapper/121:36:461
134491360,4ptp4l0-21swapper/120:25:401
134491360,3ptp4l25-21ksoftirqd/119:24:481
134491360,3ptp4l0-21swapper/123:55:581
134491360,3ptp4l0-21swapper/123:25:271
134491360,3ptp4l0-21swapper/123:10:241
134491360,3ptp4l0-21swapper/122:50:131
134491360,3ptp4l0-21swapper/122:07:251
134491360,3ptp4l0-21swapper/120:58:351
134491360,3ptp4l0-21swapper/120:45:191
24430993531,3cyclictest25-21ksoftirqd/120:10:181
24430993529,4cyclictest25-21ksoftirqd/121:42:531
134491350,4ptp4l0-21swapper/122:22:421
134491350,4ptp4l0-21swapper/121:16:271
134491350,4ptp4l0-21swapper/119:42:061
134491350,4ptp4l0-21swapper/100:19:391
134491350,3ptp4l0-21swapper/123:47:361
134491350,3ptp4l0-21swapper/122:45:141
134491350,3ptp4l0-21swapper/121:25:581
134491350,3ptp4l0-21swapper/121:21:171
134491350,3ptp4l0-21swapper/121:10:131
134491350,3ptp4l0-21swapper/121:08:441
134491350,3ptp4l0-21swapper/121:08:441
134491350,3ptp4l0-21swapper/120:54:591
134491350,3ptp4l0-21swapper/119:31:381
134491350,3ptp4l0-21swapper/100:37:471
134491340,3ptp4l0-21swapper/122:36:551
24430993228,3cyclictest25-21ksoftirqd/119:35:131
24430993226,4cyclictest25-21ksoftirqd/122:15:551
24430993226,4cyclictest25-21ksoftirqd/100:21:111
134491320,3ptp4l0-21swapper/119:27:081
24430993026,3cyclictest25-21ksoftirqd/119:50:011
134491290,3ptp4l0-21swapper/122:01:351
134491290,3ptp4l0-21swapper/122:01:351
24430992722,3cyclictest25-21ksoftirqd/119:16:061
24430992621,3cyclictest25-21ksoftirqd/122:30:141
24430992520,3cyclictest25-21ksoftirqd/120:20:011
24430992520,3cyclictest25-21ksoftirqd/119:50:121
24430992420,3cyclictest25-21ksoftirqd/122:25:241
24430992420,2cyclictest25-21ksoftirqd/120:30:241
24430992418,4cyclictest25-21ksoftirqd/122:13:301
24430992217,3cyclictest25-21ksoftirqd/121:45:161
24430992115,4cyclictest25-21ksoftirqd/121:55:371
24430992115,4cyclictest25-21ksoftirqd/119:55:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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