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2026-01-11 - 00:33
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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 Sat Jan 10, 2026 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2906421310,4sleep1568999cyclictest11:25:241
299742850,3sleep20-21swapper/209:10:182
569099690,34cyclictest3647-21/usr/sbin/munin09:25:222
134491640,4ptp4l0-21swapper/308:41:463
134491640,29ptp4l9-21ksoftirqd/008:40:210
134491620,24ptp4l0-21swapper/009:55:180
134491600,3ptp4l0-21swapper/307:45:163
134491590,4ptp4l0-21swapper/208:46:182
134491580,4ptp4l0-21swapper/311:35:113
134491580,3ptp4l0-21swapper/307:52:103
134491580,3ptp4l0-21swapper/211:49:562
134491580,3ptp4l0-21swapper/211:29:532
134491580,11ptp4l0-21swapper/111:55:181
569099572,2cyclictest0-21swapper/210:20:262
134491570,5ptp4l569199cyclictest08:30:063
134491570,4ptp4l0-21swapper/211:03:322
134491570,3ptp4l0-21swapper/308:00:273
569099561,4cyclictest4743-21ntp_states08:15:222
569099561,4cyclictest4743-21ntp_states08:15:222
134491560,4ptp4l17030-21ntp_states11:00:233
134491560,4ptp4l0-21swapper/307:55:223
134491560,4ptp4l0-21swapper/211:54:232
134491560,4ptp4l0-21swapper/209:30:342
134491560,4ptp4l0-21swapper/209:30:342
134491560,3ptp4l0-21swapper/310:30:113
134491560,3ptp4l0-21swapper/210:46:392
134491560,3ptp4l0-21swapper/207:53:102
134491550,4ptp4l0-21swapper/310:00:293
134491550,4ptp4l0-21swapper/012:29:070
134491540,4ptp4l0-21swapper/309:21:553
134491540,4ptp4l0-21swapper/308:57:173
134491540,4ptp4l0-21swapper/111:45:061
134491540,4ptp4l0-21swapper/011:52:540
134491540,3ptp4l0-21swapper/311:29:123
134491540,3ptp4l0-21swapper/308:15:043
134491540,3ptp4l0-21swapper/308:15:033
134491540,3ptp4l0-21swapper/212:21:552
569099530,34cyclictest134491ptp4l10:30:232
134491530,4ptp4l0-21swapper/107:46:301
134491530,3ptp4l0-21swapper/308:10:113
134491530,3ptp4l0-21swapper/307:40:093
134491530,10ptp4l0-21swapper/008:52:020
569099521,3cyclictest24928-21apt-get12:30:032
134491520,9ptp4l3352-21apt-get07:05:122
134491510,4ptp4l0-21swapper/312:32:453
134491510,4ptp4l0-21swapper/309:51:353
134491510,4ptp4l0-21swapper/007:09:100
134491510,18ptp4l0-21swapper/211:55:162
230642500,5sleep30-21swapper/312:25:163
134491500,7ptp4l0-21swapper/010:46:450
134491500,4ptp4l0-21swapper/312:16:433
134491500,4ptp4l0-21swapper/312:04:013
134491500,4ptp4l0-21swapper/311:07:323
134491500,3ptp4l0-21swapper/312:05:143
134491500,3ptp4l0-21swapper/311:32:413
134491500,3ptp4l0-21swapper/211:19:422
134491490,6ptp4l0-21swapper/009:30:120
134491490,6ptp4l0-21swapper/009:30:120
134491490,4ptp4l0-21swapper/207:55:542
134491490,4ptp4l0-21swapper/010:08:000
134491490,3ptp4l0-21swapper/309:01:013
569099480,20cyclictest134491ptp4l10:12:542
134491480,4ptp4l0-21swapper/308:53:403
134491480,3ptp4l0-21swapper/309:39:233
134491480,3ptp4l0-21swapper/309:39:233
134491480,3ptp4l0-21swapper/210:07:402
134491470,5ptp4l0-21swapper/307:28:483
134491470,4ptp4l0-21swapper/311:12:213
134491470,4ptp4l0-21swapper/310:24:163
134491470,4ptp4l0-21swapper/310:05:313
134491470,4ptp4l0-21swapper/307:24:063
134491470,4ptp4l0-21swapper/307:24:063
134491470,4ptp4l0-21swapper/109:34:311
134491470,4ptp4l0-21swapper/109:34:301
134491470,3ptp4l0-21swapper/007:33:400
134491460,4ptp4l0-21swapper/310:43:033
134491460,4ptp4l0-21swapper/310:43:033
134491460,4ptp4l0-21swapper/009:44:400
134491460,3ptp4l0-21swapper/209:05:512
134491460,13ptp4l11112-21latency_hist10:50:001
568899450,3cyclictest134491ptp4l12:20:000
134491450,9ptp4l0-21swapper/209:53:352
134491450,4ptp4l21541-21ls11:10:210
134491450,4ptp4l0-21swapper/308:35:393
134491450,3ptp4l0-21swapper/312:35:273
134491450,3ptp4l0-21swapper/310:55:233
134491450,3ptp4l0-21swapper/209:46:182
134491450,11ptp4l0-21swapper/109:28:161
134491440,5ptp4l0-21swapper/011:35:110
134491440,4ptp4l29529-21apt-get10:20:111
134491440,4ptp4l0-21swapper/310:39:273
134491440,3ptp4l0-21swapper/207:49:142
134491430,9ptp4l0-21swapper/009:10:340
134491430,6ptp4l4191-21iostat08:15:181
134491430,6ptp4l4191-21iostat08:15:171
134491430,5ptp4l552-21meminfo10:25:181
134491430,5ptp4l0-21swapper/308:20:123
134491430,4ptp4l0-21swapper/207:12:162
134491430,4ptp4l0-21swapper/111:50:121
134491430,4ptp4l0-21swapper/109:56:581
134491430,3ptp4l28202-21ls09:05:283
134491430,3ptp4l14758-21apt-get07:30:033
134491430,3ptp4l0-21swapper/311:59:043
134491430,3ptp4l0-21swapper/307:11:323
134491430,3ptp4l0-21swapper/212:39:362
134491430,3ptp4l0-21swapper/208:29:542
134491430,3ptp4l0-21swapper/207:41:082
134491430,10ptp4l0-21swapper/212:07:022
134491430,10ptp4l0-21swapper/211:23:032
134491430,10ptp4l0-21swapper/011:16:570
134491420,9ptp4l212-21systemd-journal09:38:022
134491420,9ptp4l212-21systemd-journal09:38:022
134491420,9ptp4l0-21swapper/009:52:230
134491420,5ptp4l0-21swapper/311:45:203
134491420,5ptp4l0-21swapper/208:35:112
134491420,5ptp4l0-21swapper/011:30:180
134491420,5ptp4l0-21swapper/010:00:210
134491420,4ptp4l5437-21ls07:10:001
134491420,4ptp4l12704-21apt-get07:25:122
134491420,4ptp4l11291-21apt-get10:50:112
134491420,4ptp4l0-21swapper/309:40:323
134491420,3ptp4l31364-21apt-get08:05:110
134491420,3ptp4l0-21swapper/212:02:582
134491410,9ptp4l0-21swapper/007:43:290
134491410,8ptp4l0-21swapper/011:57:500
134491410,6ptp4l0-21swapper/109:15:201
134491410,6ptp4l0-21swapper/107:07:021
134491410,5ptp4l32036-21/usr/sbin/munin11:35:182
134491410,5ptp4l29375-21/usr/sbin/munin09:10:141
134491410,5ptp4l0-21swapper/109:50:141
134491410,5ptp4l0-21swapper/108:10:181
134491410,5ptp4l0-21swapper/107:40:121
134491410,5ptp4l0-21swapper/012:03:180
134491410,5ptp4l0-21swapper/011:24:500
134491410,5ptp4l0-21swapper/009:20:170
134491410,4ptp4l5960-21apt-get08:20:122
134491410,4ptp4l31374-21apt-get09:15:132
134491410,4ptp4l2954-21meminfo10:30:200
134491410,4ptp4l25-21ksoftirqd/110:30:251
134491410,4ptp4l24466-21apt-get09:00:122
134491410,4ptp4l23164-21diskstats12:25:172
134491410,4ptp4l11515-21ntp_states07:20:222
134491410,4ptp4l11515-21ntp_states07:20:222
134491410,4ptp4l0-21swapper/312:22:563
134491410,4ptp4l0-21swapper/311:40:273
134491410,4ptp4l0-21swapper/209:55:242
134491410,4ptp4l0-21swapper/207:15:192
134491410,4ptp4l0-21swapper/110:10:271
134491410,4ptp4l0-21swapper/108:55:181
134491410,4ptp4l0-21swapper/107:31:101
134491410,4ptp4l0-21swapper/008:20:150
134491410,4ptp4l0-21swapper/007:54:380
134491410,3ptp4l7062-21hddtemp_smartct10:40:170
134491410,3ptp4l7062-21hddtemp_smartct10:40:170
134491410,3ptp4l6741-21ls07:10:200
134491410,3ptp4l27969-21df_inode12:35:160
134491410,3ptp4l26209-21irqstats12:30:210
134491410,3ptp4l18229-21apt-get12:15:132
134491410,3ptp4l14186-21iostat12:05:171
134491410,3ptp4l0-21swapper/311:18:343
134491410,3ptp4l0-21swapper/310:55:013
134491400,8ptp4l0-21swapper/007:48:260
134491400,5ptp4l4025-21irqrtprio07:05:183
134491400,5ptp4l14697-21/usr/sbin/munin12:05:210
134491400,5ptp4l0-21swapper/312:10:143
134491400,5ptp4l0-21swapper/312:10:143
134491400,5ptp4l0-21swapper/311:20:213
134491400,5ptp4l0-21swapper/310:10:163
134491400,5ptp4l0-21swapper/209:20:092
134491400,5ptp4l0-21swapper/208:00:162
134491400,5ptp4l0-21swapper/009:01:300
134491400,4ptp4l4615-21diskstats10:35:161
134491400,4ptp4l32466-21perl10:25:142
134491400,4ptp4l30410-21python08:00:250
134491400,4ptp4l28015-21/usr/sbin/munin12:35:171
134491400,4ptp4l25209-21df_inode10:10:140
134491400,4ptp4l14758-21apt-get07:30:022
134491400,4ptp4l0-21swapper/307:19:073
134491400,4ptp4l0-21swapper/112:31:591
134491400,4ptp4l0-21swapper/112:00:131
134491400,4ptp4l0-21swapper/011:41:290
134491400,4ptp4l0-21swapper/011:06:110
134491400,4ptp4l0-21swapper/011:02:590
134491400,4ptp4l0-21swapper/010:56:530
134491400,4ptp4l0-21swapper/010:36:450
134491400,4ptp4l0-21swapper/010:20:180
134491400,4ptp4l0-21swapper/010:15:160
134491400,4ptp4l0-21swapper/009:46:450
134491400,4ptp4l0-21swapper/009:26:550
134491400,4ptp4l0-21swapper/009:19:180
134491400,4ptp4l0-21swapper/008:16:180
134491400,4ptp4l0-21swapper/008:16:180
134491400,4ptp4l0-21swapper/007:40:000
134491400,4ptp4l0-21swapper/007:25:230
134491400,3ptp4l6635-21apt-get10:40:122
134491400,3ptp4l6635-21apt-get10:40:122
134491400,3ptp4l29751-21apt-get11:30:122
134491400,3ptp4l18220-21apt-get11:05:122
134491400,3ptp4l15915-21apt-get11:00:121
134491400,3ptp4l14722-21python09:45:253
134491400,3ptp4l14034-21ntp_states08:35:220
134491400,3ptp4l0-21swapper/211:40:182
134491390,5ptp4l568999cyclictest11:30:291
134491390,5ptp4l0-21swapper/308:25:123
134491390,5ptp4l0-21swapper/210:00:262
134491390,4ptp4l0-21swapper/311:50:203
134491390,4ptp4l0-21swapper/310:25:193
134491390,4ptp4l0-21swapper/310:15:223
134491390,4ptp4l0-21swapper/309:55:233
134491390,4ptp4l0-21swapper/309:30:263
134491390,4ptp4l0-21swapper/309:30:263
134491390,4ptp4l0-21swapper/309:25:263
134491390,4ptp4l0-21swapper/309:18:383
134491390,4ptp4l0-21swapper/309:11:123
134491390,4ptp4l0-21swapper/308:45:143
134491390,4ptp4l0-21swapper/308:05:123
134491390,4ptp4l0-21swapper/307:35:013
134491390,4ptp4l0-21swapper/212:10:172
134491390,4ptp4l0-21swapper/212:10:172
134491390,4ptp4l0-21swapper/210:15:132
134491390,4ptp4l0-21swapper/209:40:182
134491390,4ptp4l0-21swapper/208:55:142
134491390,4ptp4l0-21swapper/208:30:132
134491390,4ptp4l0-21swapper/207:38:122
134491390,4ptp4l0-21swapper/112:15:181
134491390,4ptp4l0-21swapper/111:20:441
134491390,4ptp4l0-21swapper/111:11:251
134491390,4ptp4l0-21swapper/111:08:511
134491390,4ptp4l0-21swapper/109:21:591
134491390,4ptp4l0-21swapper/109:00:241
134491390,4ptp4l0-21swapper/108:45:191
134491390,4ptp4l0-21swapper/108:20:161
134491390,4ptp4l0-21swapper/108:00:191
134491390,4ptp4l0-21swapper/107:20:201
134491390,4ptp4l0-21swapper/107:20:191
134491390,4ptp4l0-21swapper/107:19:571
134491390,4ptp4l0-21swapper/012:20:130
134491390,4ptp4l0-21swapper/012:12:480
134491390,4ptp4l0-21swapper/012:12:480
134491390,4ptp4l0-21swapper/011:45:190
134491390,4ptp4l0-21swapper/011:27:280
134491390,4ptp4l0-21swapper/010:50:460
134491390,4ptp4l0-21swapper/010:25:080
134491390,4ptp4l0-21swapper/009:39:250
134491390,4ptp4l0-21swapper/009:39:250
134491390,4ptp4l0-21swapper/009:05:520
134491390,4ptp4l0-21swapper/008:45:080
134491390,4ptp4l0-21swapper/008:34:060
134491390,4ptp4l0-21swapper/008:26:130
134491390,4ptp4l0-21swapper/008:11:350
134491390,4ptp4l0-21swapper/007:56:090
134491390,4ptp4l0-21swapper/007:20:100
134491390,4ptp4l0-21swapper/007:20:100
134491390,4ptp4l0-21swapper/007:16:550
134491390,3ptp4l6942-21diskstats10:40:151
134491390,3ptp4l6942-21diskstats10:40:151
134491390,3ptp4l4305-21apt-get10:35:132
134491390,3ptp4l0-21swapper/208:10:252
134491390,3ptp4l0-21swapper/008:57:300
134491380,5ptp4l0-21swapper/208:40:242
134491380,4ptp4l0-21swapper/310:45:163
134491380,4ptp4l0-21swapper/211:10:162
134491380,4ptp4l0-21swapper/210:55:192
134491380,4ptp4l0-21swapper/208:50:052
134491380,4ptp4l0-21swapper/208:05:162
134491380,4ptp4l0-21swapper/112:25:241
134491380,4ptp4l0-21swapper/112:13:511
134491380,4ptp4l0-21swapper/112:13:501
134491380,4ptp4l0-21swapper/110:15:141
134491380,4ptp4l0-21swapper/110:00:401
134491380,4ptp4l0-21swapper/109:44:481
134491380,4ptp4l0-21swapper/109:37:321
134491380,4ptp4l0-21swapper/109:37:321
134491380,4ptp4l0-21swapper/109:05:021
134491380,4ptp4l0-21swapper/108:50:171
134491380,4ptp4l0-21swapper/108:27:401
134491380,4ptp4l0-21swapper/108:05:181
134491380,4ptp4l0-21swapper/107:57:291
134491380,3ptp4l16397-21phc2sys08:40:261
134491380,3ptp4l0-21swapper/111:35:341
134491380,3ptp4l0-21swapper/108:36:521
134491380,3ptp4l0-21swapper/107:35:221
134491370,4ptp4l0-21swapper/112:22:311
134491370,4ptp4l0-21swapper/111:40:311
134491370,4ptp4l0-21swapper/111:15:271
134491370,4ptp4l0-21swapper/110:55:171
134491370,4ptp4l0-21swapper/108:34:221
134491370,4ptp4l0-21swapper/107:51:521
134491370,3ptp4l0-21swapper/109:46:461
134491370,3ptp4l0-21swapper/107:27:241
134491360,4ptp4l0-21swapper/110:50:011
134491350,3ptp4l0-21swapper/110:05:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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