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2026-06-19 - 06:19
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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 19, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2414121430,4sleep22788199cyclictest22:30:142
134491880,12ptp4l0-21swapper/221:55:292
319962690,10sleep031999-21unixbench_singl20:25:270
134491650,2ptp4l2939-21/usr/sbin/munin19:25:150
134491600,4ptp4l0-21swapper/021:10:160
134491600,3ptp4l0-21swapper/319:33:283
134491590,4ptp4l0-21swapper/021:05:160
27882995817,8cyclictest41-21ksoftirqd/300:25:263
134491580,4ptp4l0-21swapper/023:17:470
134491580,4ptp4l0-21swapper/019:20:060
134491580,4ptp4l0-21swapper/000:20:200
134491580,3ptp4l0-21swapper/100:10:211
302312570,5sleep00-21swapper/022:40:270
134491570,4ptp4l0-21swapper/123:45:171
134491570,4ptp4l0-21swapper/100:26:311
134491570,3ptp4l0-21swapper/123:16:571
134491570,3ptp4l0-21swapper/022:10:290
134491560,4ptp4l0-21swapper/123:30:141
134491560,3ptp4l19008-21apt-get21:10:132
27882995527,4cyclictest41-21ksoftirqd/320:37:173
134491550,5ptp4l0-21swapper/019:50:140
134491550,3ptp4l0-21swapper/121:29:561
134491540,4ptp4l0-21swapper/022:34:570
134491540,3ptp4l0-21swapper/220:23:362
134491530,4ptp4l0-21swapper/321:30:003
134491530,4ptp4l0-21swapper/300:07:463
134491530,4ptp4l0-21swapper/221:52:222
134491530,4ptp4l0-21swapper/219:08:352
134491530,4ptp4l0-21swapper/020:44:560
134491530,4ptp4l0-21swapper/019:30:300
134491530,11ptp4l0-21swapper/220:32:152
134491520,5ptp4l0-21swapper/221:42:322
134491520,4ptp4l0-21swapper/122:22:101
134491520,4ptp4l0-21swapper/119:31:221
134491520,4ptp4l0-21swapper/020:59:570
134491520,3ptp4l0-21swapper/323:00:353
27881995124,3cyclictest33-21ksoftirqd/223:15:272
134491510,4ptp4l0-21swapper/320:46:033
134491510,4ptp4l0-21swapper/123:11:411
134491510,4ptp4l0-21swapper/122:08:211
134491510,4ptp4l0-21swapper/120:56:051
134491510,4ptp4l0-21swapper/119:40:281
134491510,4ptp4l0-21swapper/022:54:540
134491510,4ptp4l0-21swapper/021:25:060
134491510,3ptp4l0-21swapper/219:47:372
134491510,3ptp4l0-21swapper/022:17:180
134491510,3ptp4l0-21swapper/020:01:260
134491510,18ptp4l25-21ksoftirqd/123:25:331
2788299507,8cyclictest41-21ksoftirqd/322:29:593
134491500,5ptp4l0-21swapper/221:20:212
134491500,4ptp4l0-21swapper/323:12:583
134491500,4ptp4l0-21swapper/319:57:453
134491500,4ptp4l0-21swapper/319:16:183
134491500,4ptp4l0-21swapper/220:10:062
134491500,4ptp4l0-21swapper/023:41:240
134491500,4ptp4l0-21swapper/020:13:340
27881994934,4cyclictest33-21ksoftirqd/222:35:132
134491490,4ptp4l2788099cyclictest00:15:261
134491490,4ptp4l0-21swapper/323:24:103
134491490,4ptp4l0-21swapper/323:24:103
134491490,4ptp4l0-21swapper/322:01:563
134491490,4ptp4l0-21swapper/320:30:593
134491490,4ptp4l0-21swapper/122:27:251
134491490,4ptp4l0-21swapper/100:36:071
134491490,4ptp4l0-21swapper/022:57:260
134491490,3ptp4l0-21swapper/019:35:140
27881994815,6cyclictest33-21ksoftirqd/220:54:402
143812480,4sleep3401ktimersoftd/321:00:003
134491480,5ptp4l2788299cyclictest20:29:023
134491480,4ptp4l0-21swapper/322:53:203
134491480,4ptp4l0-21swapper/321:39:213
134491480,4ptp4l0-21swapper/321:09:003
134491480,4ptp4l0-21swapper/122:42:331
134491480,4ptp4l0-21swapper/023:48:160
134491480,4ptp4l0-21swapper/023:35:550
134491480,4ptp4l0-21swapper/021:48:100
134491480,4ptp4l0-21swapper/021:22:280
134491480,3ptp4l0-21swapper/200:18:472
27882994715,6cyclictest41-21ksoftirqd/322:30:213
27881994718,5cyclictest33-21ksoftirqd/200:26:342
134691470,14getstats4524-21cron19:29:592
134491470,4ptp4l0-21swapper/322:42:293
134491470,4ptp4l0-21swapper/321:47:003
134491470,4ptp4l0-21swapper/221:04:582
134491470,4ptp4l0-21swapper/022:47:210
134491470,4ptp4l0-21swapper/021:43:090
134491470,4ptp4l0-21swapper/019:12:380
134491470,3ptp4l0-21swapper/322:17:093
134491470,3ptp4l0-21swapper/123:22:561
134491470,3ptp4l0-21swapper/123:22:561
134491470,3ptp4l0-21swapper/100:21:101
134491470,13ptp4l9-21ksoftirqd/022:09:460
27881994633,3cyclictest33-21ksoftirqd/222:12:102
134491460,5ptp4l0-21swapper/319:06:143
134491460,4ptp4l0-21swapper/023:33:130
134491460,4ptp4l0-21swapper/020:06:310
134491460,3ptp4l121rcu_preempt23:55:210
134491460,3ptp4l0-21swapper/023:09:190
134491460,12ptp4l0-21swapper/220:10:002
134491460,11ptp4l0-21swapper/021:37:590
27882994540,3cyclictest41-21ksoftirqd/323:40:003
2788299453,7cyclictest121rcu_preempt19:40:003
27882994532,4cyclictest41-21ksoftirqd/320:04:003
27882994532,3cyclictest41-21ksoftirqd/323:05:373
27882994514,4cyclictest41-21ksoftirqd/300:00:563
2788199455,3cyclictest121rcu_preempt21:16:522
27881994531,4cyclictest33-21ksoftirqd/223:05:142
27881994530,4cyclictest33-21ksoftirqd/200:00:192
27881994513,3cyclictest33-21ksoftirqd/219:35:042
134491450,9ptp4l0-21swapper/222:50:082
134491450,8ptp4l25958-21cut19:05:161
134491450,4ptp4l5519-21ls00:05:282
134491450,4ptp4l0-21swapper/120:39:181
134491450,10ptp4l0-21swapper/119:17:361
27882994430,4cyclictest41-21ksoftirqd/322:58:373
27882994426,3cyclictest41-21ksoftirqd/300:35:183
27881994430,4cyclictest33-21ksoftirqd/222:20:202
27881994430,3cyclictest33-21ksoftirqd/200:31:102
27881994413,3cyclictest33-21ksoftirqd/220:01:532
134491440,9ptp4l0-21swapper/121:17:151
134491440,4ptp4l0-21swapper/021:59:420
134491440,3ptp4l0-21swapper/121:36:481
134491440,2ptp4l121rcu_preempt21:32:320
134491440,11ptp4l9-21ksoftirqd/023:53:140
134491440,10ptp4l0-21swapper/323:45:043
134491440,10ptp4l0-21swapper/222:25:312
134491440,10ptp4l0-21swapper/122:59:001
27882994330,4cyclictest41-21ksoftirqd/323:52:493
27882994330,4cyclictest41-21ksoftirqd/322:14:013
27882994312,5cyclictest41-21ksoftirqd/323:27:053
2788199434,4cyclictest33-21ksoftirqd/200:21:452
27881994335,6cyclictest33-21ksoftirqd/221:07:472
27881994330,3cyclictest33-21ksoftirqd/200:35:192
27881994329,4cyclictest33-21ksoftirqd/223:39:112
27881994329,3cyclictest33-21ksoftirqd/222:05:112
134491430,9ptp4l0-21swapper/219:18:192
134491430,8ptp4l0-21swapper/019:05:150
134491430,5ptp4l0-21swapper/022:20:240
134491430,4ptp4l29574-21ls20:20:250
134491430,4ptp4l0-21swapper/320:13:433
134491430,4ptp4l0-21swapper/000:00:420
134491430,3ptp4l4939-21apt-get20:40:102
134491430,2ptp4l16851-21kworker/2:223:22:272
134491430,2ptp4l16851-21kworker/2:223:22:272
2788299423,7cyclictest41-21ksoftirqd/322:20:003
27882994237,3cyclictest41-21ksoftirqd/322:50:003
27882994230,4cyclictest41-21ksoftirqd/323:55:463
27882994229,4cyclictest41-21ksoftirqd/320:44:103
27882994229,4cyclictest41-21ksoftirqd/320:15:033
27882994229,3cyclictest41-21ksoftirqd/319:41:203
2788299422,8cyclictest41-21ksoftirqd/320:54:213
2788299421,3cyclictest121rcu_preempt20:05:153
2788199429,6cyclictest33-21ksoftirqd/223:58:072
27881994229,4cyclictest33-21ksoftirqd/222:00:202
27881994229,3cyclictest33-21ksoftirqd/220:18:392
27881994227,4cyclictest33-21ksoftirqd/223:30:232
2788199422,4cyclictest121rcu_preempt23:25:492
134491420,9ptp4l0-21swapper/221:38:252
134491420,5ptp4l0-21swapper/323:40:143
134491420,5ptp4l0-21swapper/000:15:290
134491420,4ptp4l4777-21apt-get19:30:112
134491420,4ptp4l0-21swapper/023:25:200
134491420,3ptp4l4365-21ls21:45:271
134491420,3ptp4l16868-21apt-get22:15:111
134491420,10ptp4l0-21swapper/321:13:073
134491420,10ptp4l0-21swapper/121:07:081
27882994136,3cyclictest41-21ksoftirqd/319:20:213
27882994131,8cyclictest41-21ksoftirqd/322:05:243
27882994129,3cyclictest41-21ksoftirqd/323:15:133
27882994127,4cyclictest41-21ksoftirqd/321:34:023
27881994137,2cyclictest33-21ksoftirqd/223:40:262
27881994129,3cyclictest33-21ksoftirqd/222:16:492
27881994129,3cyclictest33-21ksoftirqd/220:47:402
27881994128,4cyclictest33-21ksoftirqd/220:35:032
27881994128,3cyclictest33-21ksoftirqd/222:49:102
134491410,5ptp4l651-21/usr/sbin/munin19:20:161
134491410,5ptp4l0-21swapper/219:10:102
134491410,5ptp4l0-21swapper/123:00:181
134491410,5ptp4l0-21swapper/122:30:111
134491410,5ptp4l0-21swapper/023:10:120
134491410,4ptp4l8352-21ntp_states20:45:240
134491410,4ptp4l27675-21python22:35:271
134491410,4ptp4l26633-21df_inode22:35:163
134491410,4ptp4l2479-21apt-get19:25:111
134491410,4ptp4l1169-21apt-get00:00:021
134491410,4ptp4l0-21swapper/220:26:252
134491410,4ptp4l0-21swapper/120:16:101
134491410,4ptp4l0-21swapper/021:00:380
134491410,3ptp4l9604-21apt-get19:40:120
134491410,3ptp4l21157-21apt-get20:05:121
134491410,3ptp4l10021-21hddtemp_smartct20:50:170
134491410,10ptp4l0-21swapper/120:10:381
27882994035,3cyclictest41-21ksoftirqd/321:55:243
27882994035,3cyclictest41-21ksoftirqd/321:05:003
27882994024,6cyclictest41-21ksoftirqd/321:43:183
27882994022,4cyclictest41-21ksoftirqd/323:33:343
2788299400,3cyclictest121rcu_preempt20:20:103
27881994035,3cyclictest33-21ksoftirqd/221:46:592
27881994035,3cyclictest33-21ksoftirqd/219:25:002
27881994027,3cyclictest33-21ksoftirqd/223:14:272
27881994026,4cyclictest33-21ksoftirqd/223:00:102
27881994026,4cyclictest33-21ksoftirqd/221:30:122
27881994026,4cyclictest33-21ksoftirqd/220:55:262
27881994026,3cyclictest33-21ksoftirqd/223:45:282
2788199402,3cyclictest121rcu_preempt22:55:172
27880994034,4cyclictest25-21ksoftirqd/119:55:241
134491400,5ptp4l0-21swapper/321:20:143
134491400,5ptp4l0-21swapper/319:25:233
134491400,5ptp4l0-21swapper/000:35:130
134491400,4ptp4l2936-21diskstats20:35:140
134491400,4ptp4l28917-21irqstats20:20:171
134491400,4ptp4l13293-21sensors_temp19:45:241
134491400,4ptp4l0-21swapper/321:50:133
134491400,4ptp4l0-21swapper/321:15:233
134491400,4ptp4l0-21swapper/319:50:243
134491400,4ptp4l0-21swapper/319:45:253
134491400,4ptp4l0-21swapper/319:10:283
134491400,4ptp4l0-21swapper/300:10:143
134491400,4ptp4l0-21swapper/222:40:282
134491400,4ptp4l0-21swapper/221:26:172
134491400,4ptp4l0-21swapper/219:58:152
134491400,4ptp4l0-21swapper/123:56:371
134491400,4ptp4l0-21swapper/123:35:231
134491400,4ptp4l0-21swapper/122:50:161
134491400,4ptp4l0-21swapper/120:25:181
134491400,4ptp4l0-21swapper/022:00:490
134491400,4ptp4l0-21swapper/020:34:090
134491400,4ptp4l0-21swapper/019:45:080
134491400,4ptp4l0-21swapper/019:15:180
134491400,4ptp4l0-21swapper/000:06:000
134491400,3ptp4l7459-21meminfo00:10:190
134491400,3ptp4l5662-21iostat_ios21:50:160
134491400,3ptp4l5090-21apt-get21:50:091
134491400,3ptp4l31370-21df22:45:121
134491400,10ptp4l0-21swapper/120:44:121
27882993934,2cyclictest41-21ksoftirqd/300:15:233
27881993934,3cyclictest33-21ksoftirqd/223:50:202
27881993926,3cyclictest33-21ksoftirqd/200:10:272
134491390,5ptp4l26398-21cpuspeed22:35:130
134491390,5ptp4l22432-21sed22:25:190
134491390,5ptp4l0-21swapper/219:40:242
134491390,5ptp4l0-21swapper/119:12:011
134491390,4ptp4l8983-21memory23:05:211
134491390,4ptp4l0-21swapper/300:30:503
134491390,4ptp4l0-21swapper/219:50:072
134491390,4ptp4l0-21swapper/123:40:091
134491390,4ptp4l0-21swapper/122:12:071
134491390,4ptp4l0-21swapper/122:00:011
134491390,4ptp4l0-21swapper/121:30:441
134491390,4ptp4l0-21swapper/121:10:261
134491390,4ptp4l0-21swapper/120:46:201
134491390,4ptp4l0-21swapper/120:32:171
134491390,4ptp4l0-21swapper/120:00:101
134491390,4ptp4l0-21swapper/119:50:271
134491390,4ptp4l0-21swapper/119:37:231
134491390,4ptp4l0-21swapper/100:34:121
134491390,4ptp4l0-21swapper/100:05:071
134491390,4ptp4l0-21swapper/023:00:200
134491390,4ptp4l0-21swapper/020:15:140
134491390,3ptp4l15725-21/usr/sbin/munin00:30:100
134491390,3ptp4l12074-21ls00:20:203
134491390,3ptp4l0-21swapper/123:50:591
134491390,3ptp4l0-21swapper/121:40:111
134491380,4ptp4l0-21swapper/121:55:081
134491380,4ptp4l0-21swapper/121:20:441
134491380,4ptp4l0-21swapper/120:50:341
134491380,4ptp4l0-21swapper/023:20:300
134491380,4ptp4l0-21swapper/023:20:300
134491380,4ptp4l0-21swapper/021:15:100
134491380,4ptp4l0-21swapper/000:25:270
134491380,3ptp4l17650-21/usr/sbin/munin19:55:210
134491380,3ptp4l0-21swapper/121:00:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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