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2025-12-19 - 19:15
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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 Fri Dec 19, 2025 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1520321710,4sleep1637999cyclictest10:55:191
1073121630,7sleep3638199cyclictest08:25:243
134491770,4ptp4l0-21swapper/011:19:020
134491750,12ptp4l0-21swapper/111:24:551
116712730,6sleep30-21swapper/307:20:133
6380996530,10cyclictest33-21ksoftirqd/208:19:592
9482640,4sleep30-21swapper/310:25:163
6380996434,4cyclictest33-21ksoftirqd/211:20:262
134491640,5ptp4l19256-21idleruntime-cro12:15:000
6380996333,4cyclictest33-21ksoftirqd/209:50:202
6380996333,3cyclictest33-21ksoftirqd/212:20:162
6380996232,4cyclictest33-21ksoftirqd/207:59:162
6380996231,6cyclictest33-21ksoftirqd/209:30:242
6380996231,3cyclictest33-21ksoftirqd/210:37:572
6380996230,5cyclictest33-21ksoftirqd/211:35:002
6380996229,4cyclictest33-21ksoftirqd/210:41:362
638099622,17cyclictest0-21swapper/212:07:582
134491620,5ptp4l0-21swapper/310:10:023
6380996129,6cyclictest33-21ksoftirqd/207:26:112
6380996128,5cyclictest33-21ksoftirqd/212:20:002
6380996029,3cyclictest33-21ksoftirqd/208:20:222
134491600,3ptp4l0-21swapper/109:40:321
6380995932,6cyclictest33-21ksoftirqd/208:40:162
6380995930,3cyclictest33-21ksoftirqd/208:26:102
6380995930,3cyclictest33-21ksoftirqd/207:43:162
6380995927,4cyclictest33-21ksoftirqd/209:49:382
6380995926,6cyclictest33-21ksoftirqd/210:15:182
6380995923,6cyclictest33-21ksoftirqd/211:25:192
6380995919,8cyclictest33-21ksoftirqd/210:21:332
134491590,4ptp4l0-21swapper/010:00:170
134491590,4ptp4l0-21swapper/010:00:170
6380995830,3cyclictest33-21ksoftirqd/207:52:252
6380995826,5cyclictest33-21ksoftirqd/209:00:202
134491580,3ptp4l0-21swapper/211:08:262
6380995726,5cyclictest33-21ksoftirqd/208:00:162
6380995726,4cyclictest33-21ksoftirqd/208:32:392
134491570,3ptp4l11543-21df_inode07:20:120
134491570,3ptp4l0-21swapper/009:35:170
638099567,3cyclictest33-21ksoftirqd/209:15:162
6380995627,7cyclictest33-21ksoftirqd/209:26:262
6380995627,4cyclictest33-21ksoftirqd/209:11:462
6380995624,3cyclictest33-21ksoftirqd/209:56:202
6380995622,6cyclictest33-21ksoftirqd/212:30:252
6380995622,4cyclictest33-21ksoftirqd/209:24:582
134491560,5ptp4l0-21swapper/310:50:143
134491560,4ptp4l0-21swapper/312:29:203
134491560,4ptp4l0-21swapper/310:42:183
134491560,4ptp4l0-21swapper/210:02:112
134491560,4ptp4l0-21swapper/210:02:112
134491560,3ptp4l0-21swapper/211:15:282
134491560,3ptp4l0-21swapper/011:25:400
6380995538,9cyclictest33-21ksoftirqd/211:40:002
6380995526,4cyclictest33-21ksoftirqd/210:58:132
6380995522,3cyclictest33-21ksoftirqd/210:15:002
134491550,3ptp4l0-21swapper/009:05:240
6380995427,4cyclictest33-21ksoftirqd/211:13:192
6380995422,4cyclictest33-21ksoftirqd/210:30:422
6380995422,4cyclictest33-21ksoftirqd/210:30:422
6380995325,3cyclictest33-21ksoftirqd/207:33:442
6380995324,3cyclictest33-21ksoftirqd/208:52:042
6380995323,7cyclictest33-21ksoftirqd/211:50:252
6380995322,6cyclictest33-21ksoftirqd/207:20:222
134491530,5ptp4l0-21swapper/207:06:372
134491530,4ptp4l637999cyclictest07:27:301
134491530,4ptp4l0-21swapper/211:03:352
134491530,4ptp4l0-21swapper/211:03:352
134491530,4ptp4l0-21swapper/007:10:290
134491530,3ptp4l0-21swapper/311:01:513
134491530,3ptp4l0-21swapper/311:01:513
134491530,12ptp4l26657-21ls07:50:261
6380995227,4cyclictest33-21ksoftirqd/210:52:162
6380995226,5cyclictest33-21ksoftirqd/208:57:572
6380995219,7cyclictest33-21ksoftirqd/207:38:542
6380995219,6cyclictest33-21ksoftirqd/207:16:592
6380995214,8cyclictest33-21ksoftirqd/209:41:332
134491520,5ptp4l0-21swapper/011:50:200
6380995139,3cyclictest33-21ksoftirqd/208:05:172
6380995124,3cyclictest33-21ksoftirqd/208:12:322
6380995119,6cyclictest33-21ksoftirqd/207:45:132
6380995119,6cyclictest33-21ksoftirqd/207:10:172
6380995110,5cyclictest33-21ksoftirqd/211:50:002
134491510,4ptp4l0-21swapper/010:39:500
134491510,3ptp4l0-21swapper/008:13:480
638099505,3cyclictest33-21ksoftirqd/211:58:582
6380995015,6cyclictest33-21ksoftirqd/210:05:252
6380995015,5cyclictest33-21ksoftirqd/209:35:242
134491500,5ptp4l8489-21meminfo10:40:190
134491500,5ptp4l0-21swapper/311:43:443
134491500,5ptp4l0-21swapper/010:55:210
134491500,4ptp4l0-21swapper/310:21:573
134491500,4ptp4l0-21swapper/012:04:300
134491500,4ptp4l0-21swapper/011:45:410
134491500,4ptp4l0-21swapper/009:02:050
134491500,4ptp4l0-21swapper/008:51:190
134491500,4ptp4l0-21swapper/008:06:470
6380994922,8cyclictest33-21ksoftirqd/212:10:242
6380994914,5cyclictest33-21ksoftirqd/211:40:262
6380994913,8cyclictest33-21ksoftirqd/210:49:132
6380994913,6cyclictest33-21ksoftirqd/210:25:272
134491490,4ptp4l0-21swapper/012:07:030
134491490,4ptp4l0-21swapper/009:23:450
134491490,4ptp4l0-21swapper/008:02:490
134491490,3ptp4l0-21swapper/007:49:080
6380994839,3cyclictest33-21ksoftirqd/208:46:562
134491480,4ptp4l0-21swapper/312:33:013
134491480,4ptp4l0-21swapper/012:39:340
134491480,3ptp4l0-21swapper/108:01:291
134491480,3ptp4l0-21swapper/007:55:130
134491480,17ptp4l25-21ksoftirqd/112:14:111
638099475,2cyclictest33-21ksoftirqd/208:35:052
6380994741,3cyclictest33-21ksoftirqd/212:40:002
6380994716,5cyclictest33-21ksoftirqd/212:00:142
637999472,43cyclictest0-21swapper/111:01:271
637999472,43cyclictest0-21swapper/111:01:271
134491470,4ptp4l0-21swapper/311:54:133
134491470,4ptp4l0-21swapper/310:58:033
134491470,4ptp4l0-21swapper/111:42:301
134491470,4ptp4l0-21swapper/011:03:400
134491470,4ptp4l0-21swapper/011:03:400
134491470,4ptp4l0-21swapper/010:21:390
638099465,2cyclictest33-21ksoftirqd/212:29:472
638099461,3cyclictest33-21ksoftirqd/209:05:512
134491460,7ptp4l0-21swapper/109:30:171
134491460,3ptp4l0-21swapper/009:16:500
134491450,4ptp4l0-21swapper/311:09:033
134491450,4ptp4l0-21swapper/110:16:521
134491450,4ptp4l0-21swapper/107:37:541
134491450,3ptp4l0-21swapper/107:55:081
134491450,3ptp4l0-21swapper/011:37:040
134491450,3ptp4l0-21swapper/007:39:150
134491440,10ptp4l0-21swapper/309:58:203
134491430,7ptp4l0-21swapper/107:05:141
134491430,5ptp4l25213-21users10:05:271
134491430,5ptp4l0-21swapper/312:00:123
134491430,5ptp4l0-21swapper/107:10:001
134491430,4ptp4l18996-21hddtemp_smartct08:45:150
134491430,4ptp4l17166-21apt-get12:10:123
134491430,4ptp4l1681-21ls09:15:261
134491430,4ptp4l0-21swapper/011:05:510
134491430,3ptp4l0-21swapper/311:58:033
134491430,3ptp4l0-21swapper/010:51:250
134491430,10ptp4l0-21swapper/010:28:390
134491420,5ptp4l12173-21iostat08:30:170
134491420,5ptp4l0-21swapper/308:15:163
134491420,5ptp4l0-21swapper/111:55:131
134491420,5ptp4l0-21swapper/011:40:150
134491420,5ptp4l0-21swapper/011:20:130
134491420,4ptp4l11991-21apt-get09:40:140
134491420,4ptp4l0-21swapper/010:10:110
134491420,3ptp4l31334-21ls08:00:243
134491420,3ptp4l0-21swapper/107:15:591
6379994112,28cyclictest31639-21kworker/1:009:46:181
134491410,5ptp4l887-21/usr/sbin/munin11:35:293
134491410,5ptp4l20028-21iostat12:15:171
134491410,5ptp4l16944-21ntp_states07:30:201
134491410,5ptp4l0-21swapper/108:45:201
134491410,4ptp4l9214-21apt-get09:35:013
134491410,4ptp4l4024-21/usr/sbin/munin09:20:271
134491410,4ptp4l30665-21apt-get10:20:111
134491410,4ptp4l25661-21iostat_ios07:50:180
134491410,4ptp4l25479-21apt-get09:00:121
134491410,4ptp4l24345-21df_abs11:15:131
134491410,4ptp4l23728-21iostat08:55:180
134491410,4ptp4l20928-21hddtemp_smartct07:40:170
134491410,4ptp4l20411-21memory12:15:200
134491410,4ptp4l16880-21df_inode09:50:131
134491410,4ptp4l10622-21meminfo09:35:201
134491410,4ptp4l10259-21memory08:25:200
134491410,4ptp4l0-21swapper/011:33:190
134491410,4ptp4l0-21swapper/009:55:180
134491410,4ptp4l0-21swapper/009:54:590
134491410,4ptp4l0-21swapper/007:16:510
134491410,3ptp4l32579-21apt-get09:15:113
134491410,3ptp4l30237-21ls11:25:291
134491410,3ptp4l27491-21ntp_states12:30:231
134491410,3ptp4l27470-21ls10:10:241
134491410,3ptp4l20503-21apt-get07:40:121
134491410,14ptp4l0-21swapper/310:15:223
134491400,6ptp4l0-21swapper/007:06:440
134491400,5ptp4l12013-21latency_hist10:50:003
134491400,5ptp4l0-21swapper/309:50:103
134491400,5ptp4l0-21swapper/108:25:171
134491400,5ptp4l0-21swapper/012:25:190
134491400,5ptp4l0-21swapper/008:40:160
134491400,4ptp4l26582-21df12:30:140
134491400,4ptp4l22086-21diskstats12:20:150
134491400,4ptp4l22033-21df11:10:150
134491400,4ptp4l21457-21/usr/sbin/munin10:00:121
134491400,4ptp4l21457-21/usr/sbin/munin10:00:121
134491400,4ptp4l14333-21hddtemp_smartct08:35:170
134491400,4ptp4l0-21swapper/309:13:033
134491400,4ptp4l0-21swapper/112:09:431
134491400,4ptp4l0-21swapper/111:05:121
134491400,4ptp4l0-21swapper/110:50:191
134491400,4ptp4l0-21swapper/110:25:171
134491400,4ptp4l0-21swapper/011:55:030
134491400,4ptp4l0-21swapper/010:45:230
134491400,4ptp4l0-21swapper/010:07:550
134491400,4ptp4l0-21swapper/009:30:180
134491400,4ptp4l0-21swapper/008:19:330
134491400,4ptp4l0-21swapper/007:26:020
134491400,3ptp4l7956-21meminfo08:20:201
134491400,3ptp4l7309-21df_inode08:20:150
134491400,3ptp4l618-21irqstats08:05:181
134491400,3ptp4l24118-21apt-get11:15:123
134491400,3ptp4l14284-21apt-get09:45:130
134491400,3ptp4l13025-21ls08:30:241
6381993934,3cyclictest41-21ksoftirqd/307:34:593
134491390,5ptp4l0-21swapper/112:35:151
134491390,5ptp4l0-21swapper/112:25:201
134491390,4ptp4l9471-21ls11:50:271
134491390,4ptp4l14841-21ls08:35:201
134491390,4ptp4l0-21swapper/312:35:193
134491390,4ptp4l0-21swapper/312:20:123
134491390,4ptp4l0-21swapper/312:15:323
134491390,4ptp4l0-21swapper/312:05:123
134491390,4ptp4l0-21swapper/311:47:083
134491390,4ptp4l0-21swapper/311:30:043
134491390,4ptp4l0-21swapper/311:20:213
134491390,4ptp4l0-21swapper/311:10:433
134491390,4ptp4l0-21swapper/310:39:593
134491390,4ptp4l0-21swapper/310:30:173
134491390,4ptp4l0-21swapper/310:30:173
134491390,4ptp4l0-21swapper/309:48:093
134491390,4ptp4l0-21swapper/308:44:393
134491390,4ptp4l0-21swapper/307:37:563
134491390,4ptp4l0-21swapper/307:10:123
134491390,4ptp4l0-21swapper/111:45:011
134491390,4ptp4l0-21swapper/110:46:521
134491390,4ptp4l0-21swapper/110:35:211
134491390,4ptp4l0-21swapper/110:30:091
134491390,4ptp4l0-21swapper/110:30:091
134491390,4ptp4l0-21swapper/109:55:191
134491390,4ptp4l0-21swapper/109:25:161
134491390,4ptp4l0-21swapper/109:05:011
134491390,4ptp4l0-21swapper/108:50:261
134491390,4ptp4l0-21swapper/108:40:201
134491390,4ptp4l0-21swapper/010:30:300
134491390,4ptp4l0-21swapper/010:30:300
134491390,4ptp4l0-21swapper/010:16:280
134491390,4ptp4l0-21swapper/009:26:270
134491390,3ptp4l31233-21meminfo09:10:201
134491390,3ptp4l31127-21irqstats09:10:180
134491390,3ptp4l2595-21hddtemp_smartct08:10:161
134491390,3ptp4l2557-21apt-get09:20:123
134491390,3ptp4l25043-21ls10:05:263
134491390,3ptp4l23496-21users11:10:301
134491390,3ptp4l23165-21apt-get08:55:131
134491390,3ptp4l22799-21apt-get07:45:111
134491390,3ptp4l1880-21meminfo11:35:201
134491390,3ptp4l12191-21memory07:20:191
134491390,3ptp4l0-21swapper/112:00:191
134491390,3ptp4l0-21swapper/007:30:520
134491390,2ptp4l5715-21strings08:15:181
134491380,4ptp4l0-21swapper/311:25:213
134491380,4ptp4l0-21swapper/310:01:493
134491380,4ptp4l0-21swapper/310:01:493
134491380,4ptp4l0-21swapper/309:30:353
134491380,4ptp4l0-21swapper/308:55:433
134491380,4ptp4l0-21swapper/308:45:273
134491380,4ptp4l0-21swapper/308:24:063
134491380,4ptp4l0-21swapper/308:10:213
134491380,4ptp4l0-21swapper/307:50:253
134491380,4ptp4l0-21swapper/111:33:131
134491380,4ptp4l0-21swapper/110:40:591
134491380,3ptp4l0-21swapper/309:40:243
134491380,3ptp4l0-21swapper/112:21:041
6381993732,3cyclictest41-21ksoftirqd/308:30:123
6381993725,9cyclictest41-21ksoftirqd/309:25:273
134491370,4ptp4l0-21swapper/307:58:473
134491370,4ptp4l0-21swapper/307:16:463
134491370,3ptp4l0-21swapper/307:45:373
134491360,4ptp4l0-21swapper/309:06:083
134491360,4ptp4l0-21swapper/307:44:053
134491360,3ptp4l0-21swapper/309:04:463
134491360,3ptp4l0-21swapper/308:52:163
134491360,3ptp4l0-21swapper/308:06:023
134491350,4ptp4l0-21swapper/308:37:153
134491290,3ptp4l0-21swapper/307:25:093
134491260,5ptp4l0-21swapper/307:06:373
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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