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2026-05-06 - 23:28
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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 792 highest latencies:
System rackdslot1.osadl.org (updated Wed May 06, 2026 12:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1717121690,3sleep02541299cyclictest11:30:160
112992690,6sleep00-21swapper/007:49:590
134491680,6ptp4l0-21swapper/207:15:232
134491640,5ptp4l0-21swapper/307:07:463
134491630,3ptp4l15506-21ntp_states11:25:213
134491600,5ptp4l0-21swapper/008:40:120
134491590,4ptp4l0-21swapper/312:02:333
134491590,4ptp4l0-21swapper/310:42:313
134491590,18ptp4l19980-21ls08:05:263
134491580,4ptp4l0-21swapper/109:55:171
134491570,4ptp4l4769-21df_abs08:45:120
134491570,4ptp4l0-21swapper/208:25:322
134491570,3ptp4l0-21swapper/208:35:202
134491560,5ptp4l0-21swapper/207:05:302
134491560,3ptp4l0-21swapper/311:20:213
134491560,3ptp4l0-21swapper/212:25:522
134491550,4ptp4l0-21swapper/207:45:002
134491550,4ptp4l0-21swapper/107:31:331
134491550,3ptp4l0-21swapper/310:54:013
134491550,3ptp4l0-21swapper/108:35:011
134491550,3ptp4l0-21swapper/010:10:270
46312540,4sleep34627-21latency_hist11:05:003
235282540,3sleep10-21swapper/108:15:151
134491540,4ptp4l0-21swapper/211:40:202
134491540,4ptp4l0-21swapper/211:22:562
134491540,4ptp4l0-21swapper/210:37:512
134491540,12ptp4l0-21swapper/311:05:113
157682530,4sleep20-21swapper/212:35:202
134491530,4ptp4l0-21swapper/208:10:272
134491530,4ptp4l0-21swapper/208:06:382
134491520,5ptp4l0-21swapper/211:32:462
134491520,4ptp4l0-21swapper/209:28:342
134491520,3ptp4l0-21swapper/309:19:283
134491510,5ptp4l0-21swapper/111:27:521
134491510,4ptp4l0-21swapper/212:18:052
134491510,4ptp4l0-21swapper/211:51:482
134491510,4ptp4l0-21swapper/209:49:072
134491510,4ptp4l0-21swapper/207:54:592
134491510,3ptp4l0-21swapper/210:42:592
134491510,12ptp4l0-21swapper/207:56:102
134491510,11ptp4l0-21swapper/309:10:193
134491500,5ptp4l0-21swapper/211:36:292
134491500,4ptp4l0-21swapper/209:53:042
134491500,4ptp4l0-21swapper/208:15:442
134491500,4ptp4l0-21swapper/011:13:500
134491500,4ptp4l0-21swapper/008:09:220
134491500,4ptp4l0-21swapper/007:28:400
134491500,3ptp4l0-21swapper/208:51:232
134491500,3ptp4l0-21swapper/010:18:370
134491490,4ptp4l0-21swapper/212:01:492
134491490,4ptp4l0-21swapper/207:12:502
134491490,4ptp4l0-21swapper/010:52:120
134491490,3ptp4l0-21swapper/209:07:442
134491490,15ptp4l25-21ksoftirqd/111:09:591
2541399483,43cyclictest0-21swapper/109:00:591
2541399482,44cyclictest8907-21kworker/1:210:25:181
134491480,4ptp4l0-21swapper/210:24:522
134491480,4ptp4l0-21swapper/208:02:482
134491480,4ptp4l0-21swapper/207:21:542
134491480,4ptp4l0-21swapper/007:20:390
134491480,3ptp4l0-21swapper/309:03:573
134491480,3ptp4l0-21swapper/211:56:122
134491480,3ptp4l0-21swapper/211:03:302
134491470,4ptp4l0-21swapper/310:26:123
134491470,4ptp4l0-21swapper/308:59:343
134491470,4ptp4l0-21swapper/308:59:343
134491470,4ptp4l0-21swapper/107:23:221
134491470,3ptp4l0-21swapper/310:06:303
134491470,3ptp4l0-21swapper/110:30:001
134491470,12ptp4l0-21swapper/107:14:071
134491460,4ptp4l0-21swapper/312:15:023
134491460,4ptp4l0-21swapper/307:36:103
134491460,3ptp4l0-21swapper/209:02:382
134491450,4ptp4l0-21swapper/110:07:191
134491450,4ptp4l0-21swapper/108:57:431
134491450,4ptp4l0-21swapper/108:57:431
134491450,4ptp4l0-21swapper/009:39:590
134491450,3ptp4l121rcu_preempt08:16:583
134491450,3ptp4l0-21swapper/312:08:593
134491450,3ptp4l0-21swapper/112:39:121
134491450,2ptp4l0-21swapper/311:59:213
134491450,11ptp4l0-21swapper/109:48:151
134491440,5ptp4l0-21swapper/211:07:172
134491440,3ptp4l0-21swapper/312:13:473
134491440,3ptp4l0-21swapper/010:49:400
134491440,3ptp4l0-21swapper/010:49:400
134491440,3ptp4l0-21swapper/008:16:580
134491440,12ptp4l25-21ksoftirqd/111:59:071
134491440,10ptp4l0-21swapper/307:58:583
46198430,15rtkit-daemon12905-21apache212:20:253
134491430,9ptp4l0-21swapper/310:19:133
134491430,9ptp4l0-21swapper/110:40:221
134491430,8ptp4l0-21swapper/207:36:012
134491430,7ptp4l0-21swapper/007:05:210
134491430,5ptp4l4330-21ls12:10:272
134491430,4ptp4l2766-21apt-get12:10:120
134491430,4ptp4l0-21swapper/311:17:373
2541399422,38cyclictest0-21swapper/109:31:191
134491420,8ptp4l0-21swapper/210:25:352
134491420,6ptp4l0-21swapper/309:05:123
134491420,6ptp4l0-21swapper/108:50:121
134491420,5ptp4l3356-21meminfo09:50:180
134491420,5ptp4l0-21swapper/307:25:183
134491420,5ptp4l0-21swapper/212:05:182
134491420,4ptp4l25391-21apt-get08:20:131
134491420,4ptp4l19422-21irqstats10:25:160
134491420,4ptp4l13564-21ntp_states12:30:223
134491420,4ptp4l0-21swapper/308:28:293
134491420,4ptp4l0-21swapper/111:49:151
134491420,3ptp4l2318-21gnome-shell12:27:593
134491420,3ptp4l0-21swapper/109:17:071
25415994137,2cyclictest41-21ksoftirqd/310:03:423
134491410,9ptp4l0-21swapper/112:28:281
134491410,5ptp4l28692-21memory07:15:223
134491410,5ptp4l17595-21latency11:30:183
134491410,5ptp4l15697-21/usr/sbin/munin09:05:280
134491410,5ptp4l11972-21/usr/sbin/munin09:00:140
134491410,5ptp4l0-21swapper/309:25:123
134491410,5ptp4l0-21swapper/207:30:272
134491410,5ptp4l0-21swapper/007:40:160
134491410,4ptp4l9934-21df11:15:140
134491410,4ptp4l4553-21apt-get08:45:102
134491410,4ptp4l454-21diskstats10:55:142
134491410,4ptp4l29985-21apt-get08:30:123
134491410,4ptp4l28689-21meminfo07:15:220
134491410,4ptp4l16889-21iostat09:10:180
134491410,4ptp4l15053-21df_inode12:35:140
134491410,4ptp4l14985-21ls10:15:211
134491410,4ptp4l12696-21df_inode12:30:141
134491410,4ptp4l10735-21ls10:05:240
134491410,4ptp4l10031-21diskstats11:15:151
134491410,4ptp4l0-21swapper/310:30:273
134491410,4ptp4l0-21swapper/210:52:412
134491410,4ptp4l0-21swapper/012:20:110
134491410,4ptp4l0-21swapper/008:20:120
134491410,3ptp4l7425-21apt-get11:10:131
134491410,3ptp4l20941-21apt-get09:20:110
134491410,3ptp4l101ktimersoftd/011:25:130
25415994035,2cyclictest41-21ksoftirqd/312:40:003
25415994034,3cyclictest41-21ksoftirqd/308:40:183
2541399402,2cyclictest0-21swapper/107:43:391
25413994011,28cyclictest0-21swapper/109:10:391
134491400,7ptp4l25-21ksoftirqd/108:44:021
134491400,5ptp4l0-21swapper/311:45:133
134491400,5ptp4l0-21swapper/307:10:133
134491400,5ptp4l0-21swapper/209:15:112
134491400,5ptp4l0-21swapper/108:45:141
134491400,5ptp4l0-21swapper/009:55:190
134491400,5ptp4l0-21swapper/009:40:180
134491400,5ptp4l0-21swapper/008:35:380
134491400,5ptp4l0-21swapper/007:50:120
134491400,5ptp4l0-21swapper/007:35:180
134491400,4ptp4l4240-21users11:00:291
134491400,4ptp4l32453-21apt-get09:45:110
134491400,4ptp4l28948-21ntp_states09:35:231
134491400,4ptp4l25800-21df_inode10:40:150
134491400,4ptp4l14539-21if_enp4s009:05:171
134491400,4ptp4l0-21swapper/311:40:223
134491400,4ptp4l0-21swapper/311:11:073
134491400,4ptp4l0-21swapper/309:31:043
134491400,4ptp4l0-21swapper/308:54:393
134491400,4ptp4l0-21swapper/308:35:203
134491400,4ptp4l0-21swapper/307:45:243
134491400,4ptp4l0-21swapper/307:40:143
134491400,4ptp4l0-21swapper/211:46:442
134491400,4ptp4l0-21swapper/210:03:562
134491400,4ptp4l0-21swapper/208:55:252
134491400,4ptp4l0-21swapper/208:55:252
134491400,4ptp4l0-21swapper/208:44:012
134491400,4ptp4l0-21swapper/112:15:181
134491400,4ptp4l0-21swapper/110:50:231
134491400,4ptp4l0-21swapper/107:15:181
134491400,4ptp4l0-21swapper/012:25:360
134491400,4ptp4l0-21swapper/012:08:470
134491400,4ptp4l0-21swapper/011:46:450
134491400,4ptp4l0-21swapper/011:44:490
134491400,4ptp4l0-21swapper/011:05:140
134491400,4ptp4l0-21swapper/010:55:440
134491400,4ptp4l0-21swapper/010:32:180
134491400,4ptp4l0-21swapper/009:26:440
134491400,4ptp4l0-21swapper/009:18:020
134491400,4ptp4l0-21swapper/008:00:140
134491400,4ptp4l0-21swapper/007:56:280
134491400,3ptp4l30153-21apt-get09:40:111
134491400,3ptp4l241ktimersoftd/109:20:171
134491400,3ptp4l22192-21ls08:10:240
134491400,3ptp4l20985-21df08:10:111
134491400,3ptp4l14393-21apt-get11:25:112
134491400,3ptp4l0-21swapper/310:22:343
134491390,5ptp4l0-21swapper/308:02:413
134491390,5ptp4l0-21swapper/307:30:123
134491390,5ptp4l0-21swapper/012:30:120
134491390,4ptp4l24115-21strings07:05:201
134491390,4ptp4l0-21swapper/311:50:113
134491390,4ptp4l0-21swapper/311:38:123
134491390,4ptp4l0-21swapper/310:55:203
134491390,4ptp4l0-21swapper/309:51:353
134491390,4ptp4l0-21swapper/309:46:493
134491390,4ptp4l0-21swapper/309:21:413
134491390,4ptp4l0-21swapper/308:45:223
134491390,4ptp4l0-21swapper/308:21:203
134491390,4ptp4l0-21swapper/307:50:143
134491390,4ptp4l0-21swapper/307:21:463
134491390,4ptp4l0-21swapper/212:32:352
134491390,4ptp4l0-21swapper/211:11:362
134491390,4ptp4l0-21swapper/210:46:022
134491390,4ptp4l0-21swapper/210:46:012
134491390,4ptp4l0-21swapper/210:14:552
134491390,4ptp4l0-21swapper/209:55:352
134491390,4ptp4l0-21swapper/209:41:382
134491390,4ptp4l0-21swapper/209:39:232
134491390,4ptp4l0-21swapper/209:30:062
134491390,4ptp4l0-21swapper/209:21:112
134491390,4ptp4l0-21swapper/208:21:092
134491390,4ptp4l0-21swapper/207:28:422
134491390,4ptp4l0-21swapper/112:20:321
134491390,4ptp4l0-21swapper/111:30:171
134491390,4ptp4l0-21swapper/110:45:191
134491390,4ptp4l0-21swapper/110:45:191
134491390,4ptp4l0-21swapper/110:10:221
134491390,4ptp4l0-21swapper/110:00:131
134491390,4ptp4l0-21swapper/108:33:181
134491390,4ptp4l0-21swapper/108:25:141
134491390,4ptp4l0-21swapper/012:00:070
134491390,4ptp4l0-21swapper/011:58:320
134491390,4ptp4l0-21swapper/011:51:300
134491390,4ptp4l0-21swapper/011:35:050
134491390,4ptp4l0-21swapper/011:20:500
134491390,4ptp4l0-21swapper/011:00:100
134491390,4ptp4l0-21swapper/010:38:570
134491390,4ptp4l0-21swapper/010:22:030
134491390,4ptp4l0-21swapper/010:00:470
134491390,4ptp4l0-21swapper/009:30:180
134491390,4ptp4l0-21swapper/008:58:160
134491390,4ptp4l0-21swapper/008:58:150
134491390,4ptp4l0-21swapper/008:31:430
134491390,4ptp4l0-21swapper/007:30:060
134491390,3ptp4l8170-21/usr/sbin/munin08:50:210
134491390,3ptp4l27995-21diskstats08:25:140
134491390,3ptp4l13598-21/usr/sbin/munin11:20:261
134491390,3ptp4l10169-21memory07:45:201
134491390,3ptp4l0-21swapper/308:10:193
134491390,3ptp4l0-21swapper/210:17:242
134491390,3ptp4l0-21swapper/109:50:211
134491390,3ptp4l0-21swapper/107:55:291
134491390,3ptp4l0-21swapper/012:15:190
134491380,4ptp4l27003-21ntpq11:50:221
134491380,4ptp4l0-21swapper/310:45:273
134491380,4ptp4l0-21swapper/310:45:273
134491380,4ptp4l0-21swapper/310:35:233
134491380,4ptp4l0-21swapper/309:41:133
134491380,4ptp4l0-21swapper/309:35:563
134491380,4ptp4l0-21swapper/212:20:352
134491380,4ptp4l0-21swapper/211:15:272
134491380,4ptp4l0-21swapper/210:06:092
134491380,4ptp4l0-21swapper/208:30:142
134491380,4ptp4l0-21swapper/111:35:021
134491380,4ptp4l0-21swapper/110:35:241
134491380,4ptp4l0-21swapper/110:21:361
134491380,4ptp4l0-21swapper/108:00:271
134491380,4ptp4l0-21swapper/107:50:261
134491380,4ptp4l0-21swapper/107:35:051
134491380,4ptp4l0-21swapper/007:13:390
134491380,3ptp4l32353-21apt-get07:25:111
134491380,3ptp4l0-21swapper/210:30:252
134491380,3ptp4l0-21swapper/209:10:132
134491380,3ptp4l0-21swapper/207:40:172
134491380,3ptp4l0-21swapper/110:55:481
134491370,4ptp4l0-21swapper/112:01:531
134491370,3ptp4l0-21swapper/310:10:013
134491370,3ptp4l0-21swapper/309:59:393
134491370,3ptp4l0-21swapper/112:05:561
134491370,3ptp4l0-21swapper/109:25:181
134491370,3ptp4l0-21swapper/108:05:161
134491360,3ptp4l0-21swapper/111:40:551
134491320,3ptp4l0-21swapper/112:13:031
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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