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2026-03-15 - 23:32
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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 376 highest latencies:
System rackdslot1.osadl.org (updated Sun Mar 15, 2026 12:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1617421540,6sleep33032199cyclictest12:25:233
1617421540,6sleep33032199cyclictest12:25:233
134491680,28ptp4l16381-21users11:15:270
134491640,18ptp4l0-21swapper/110:25:231
134491630,3ptp4l27297-21irqstats11:40:202
30321996225,9cyclictest41-21ksoftirqd/312:05:203
134491620,4ptp4l0-21swapper/010:10:250
134491620,19ptp4l31894-21irqstats11:50:180
30321996027,4cyclictest41-21ksoftirqd/308:15:223
3032199602,31cyclictest0-21swapper/309:11:433
134491600,4ptp4l0-21swapper/207:25:112
134491600,4ptp4l0-21swapper/008:55:120
134491590,4ptp4l0-21swapper/109:55:251
134491580,5ptp4l0-21swapper/207:07:242
134491580,4ptp4l0-21swapper/210:29:562
134491580,4ptp4l0-21swapper/012:25:160
134491580,4ptp4l0-21swapper/012:25:160
134491580,3ptp4l0-21swapper/209:11:072
30321995719,9cyclictest41-21ksoftirqd/307:45:233
3032199571,12cyclictest0-21swapper/308:25:213
134491570,4ptp4l0-21swapper/109:49:561
134491570,3ptp4l0-21swapper/209:40:212
134491560,4ptp4l0-21swapper/210:45:282
134491560,3ptp4l6414-21phc2sys09:45:230
134491560,3ptp4l0-21swapper/011:00:240
3032199554,11cyclictest0-21swapper/312:23:213
3032199552,31cyclictest0-21swapper/307:57:503
134491550,3ptp4l0-21swapper/112:33:221
3032199542,34cyclictest0-21swapper/308:31:023
3032199542,33cyclictest0-21swapper/311:32:123
134491540,4ptp4l0-21swapper/211:12:592
134491540,4ptp4l0-21swapper/111:16:111
134491540,17ptp4l0-21swapper/110:30:211
3032199533,6cyclictest41-21ksoftirqd/309:30:153
3032199533,6cyclictest0-21swapper/309:07:443
3032199532,11cyclictest0-21swapper/312:12:423
3032199532,11cyclictest0-21swapper/308:00:183
134491530,4ptp4l0-21swapper/210:06:282
134491530,10ptp4l0-21swapper/009:56:370
3032199524,6cyclictest0-21swapper/311:57:423
3032199523,6cyclictest0-21swapper/311:25:133
3032199523,6cyclictest0-21swapper/307:27:483
30321995230,3cyclictest41-21ksoftirqd/311:10:273
3032199522,30cyclictest0-21swapper/309:57:233
134491520,4ptp4l0-21swapper/207:13:502
134491520,4ptp4l0-21swapper/112:04:361
134491520,4ptp4l0-21swapper/011:25:340
134491520,4ptp4l0-21swapper/010:20:040
134491520,3ptp4l0-21swapper/109:50:221
134491520,3ptp4l0-21swapper/109:05:221
134491520,12ptp4l0-21swapper/107:51:061
3032199513,6cyclictest0-21swapper/308:57:413
3032199512,6cyclictest0-21swapper/310:00:233
3032199511,6cyclictest0-21swapper/308:45:213
3032199510,8cyclictest41-21ksoftirqd/310:40:183
134491510,4ptp4l0-21swapper/109:41:281
134491510,4ptp4l0-21swapper/012:12:170
134491510,4ptp4l0-21swapper/009:03:260
134491510,4ptp4l0-21swapper/009:03:260
134491510,4ptp4l0-21swapper/008:27:060
134491510,3ptp4l0-21swapper/211:34:212
3032199504,6cyclictest0-21swapper/310:59:243
3032199504,6cyclictest0-21swapper/310:59:243
3032199503,6cyclictest0-21swapper/310:46:443
3032199502,8cyclictest0-21swapper/310:05:223
3032199502,7cyclictest0-21swapper/309:28:073
3032199502,7cyclictest0-21swapper/308:37:143
3032199502,6cyclictest0-21swapper/307:20:213
3032199502,5cyclictest0-21swapper/312:32:033
3032199501,6cyclictest0-21swapper/310:11:023
3032199501,11cyclictest0-21swapper/310:50:233
3032199500,7cyclictest41-21ksoftirqd/308:50:213
134491500,5ptp4l0-21swapper/107:05:131
134491500,4ptp4l0-21swapper/110:17:231
134491500,4ptp4l0-21swapper/108:22:171
134491500,4ptp4l0-21swapper/012:36:020
134491500,3ptp4l0-21swapper/109:23:081
134491500,15ptp4l0-21swapper/009:21:370
3032199494,6cyclictest0-21swapper/307:40:433
3032199493,6cyclictest0-21swapper/312:18:393
3032199493,6cyclictest0-21swapper/309:51:083
3032199492,7cyclictest0-21swapper/311:35:263
3032199492,6cyclictest0-21swapper/308:24:473
3032199492,6cyclictest0-21swapper/307:35:293
3032199490,6cyclictest41-21ksoftirqd/308:10:003
3032199490,6cyclictest41-21ksoftirqd/307:15:273
134491490,5ptp4l0-21swapper/307:09:593
134491490,4ptp4l0-21swapper/112:36:381
134491490,4ptp4l0-21swapper/012:22:580
134491490,4ptp4l0-21swapper/012:18:530
134491490,4ptp4l0-21swapper/011:58:330
134491490,3ptp4l0-21swapper/107:30:291
134491490,3ptp4l0-21swapper/007:51:210
134491490,10ptp4l28187-21/usr/sbin/munin07:05:140
3032199484,8cyclictest41-21ksoftirqd/310:40:003
3032199483,6cyclictest0-21swapper/310:18:013
134491480,3ptp4l0-21swapper/007:33:320
3032199475,8cyclictest41-21ksoftirqd/309:00:163
3032199475,8cyclictest41-21ksoftirqd/309:00:163
3032199474,6cyclictest0-21swapper/309:46:483
3032199474,6cyclictest0-21swapper/307:50:133
3032199473,6cyclictest41-21ksoftirqd/311:40:273
3032199472,6cyclictest41-21ksoftirqd/311:20:233
3032199471,6cyclictest41-21ksoftirqd/312:00:143
134491470,4ptp4l0-21swapper/108:30:051
134491470,4ptp4l0-21swapper/107:57:571
134491470,3ptp4l0-21swapper/207:56:332
3032199464,6cyclictest41-21ksoftirqd/311:05:003
3032199464,6cyclictest0-21swapper/310:28:353
3032199463,7cyclictest0-21swapper/311:51:553
3032199463,5cyclictest41-21ksoftirqd/310:30:203
3032199461,13cyclictest0-21swapper/308:44:333
3032199460,6cyclictest41-21ksoftirqd/309:40:243
3032199460,5cyclictest41-21ksoftirqd/311:05:173
3032199460,5cyclictest41-21ksoftirqd/310:20:223
134491460,4ptp4l0-21swapper/210:33:322
134491460,4ptp4l0-21swapper/209:34:522
134491460,4ptp4l0-21swapper/108:43:221
134491460,4ptp4l0-21swapper/010:37:330
134491460,3ptp4l0-21swapper/207:33:242
134491460,3ptp4l0-21swapper/008:37:120
134491460,3ptp4l0-21swapper/007:46:090
134491460,1ptp4l0-21swapper/111:10:531
3032199454,7cyclictest41-21ksoftirqd/308:15:003
3032199453,3cyclictest41-21ksoftirqd/307:30:273
3032199452,6cyclictest0-21swapper/311:46:503
3032199452,6cyclictest0-21swapper/311:15:163
3032199452,6cyclictest0-21swapper/307:12:003
3032199451,6cyclictest41-21ksoftirqd/309:35:133
3032199450,5cyclictest401ktimersoftd/312:40:003
134491450,3ptp4l0-21swapper/011:47:050
134491450,3ptp4l0-21swapper/008:32:470
134491450,11ptp4l0-21swapper/011:35:250
134491450,10ptp4l0-21swapper/010:30:450
134491450,10ptp4l0-21swapper/008:52:550
3032199443,5cyclictest41-21ksoftirqd/309:20:183
134491440,9ptp4l0-21swapper/007:17:330
134491440,3ptp4l241ktimersoftd/108:10:141
134491440,12ptp4l0-21swapper/209:35:572
134491440,10ptp4l0-21swapper/209:04:402
134491440,10ptp4l0-21swapper/209:04:392
3032199433,6cyclictest0-21swapper/309:17:523
134491430,9ptp4l0-21swapper/212:38:052
134491430,5ptp4l0-21swapper/212:30:242
134491430,4ptp4l8223-21diskstats12:10:142
134491430,4ptp4l6193-21ntp_states08:35:232
134491430,4ptp4l2775-21apt-get08:30:112
134491430,4ptp4l24615-21irqstats10:25:210
134491430,4ptp4l14659-21apt-get11:15:112
134491430,4ptp4l0-21swapper/210:51:002
134491430,4ptp4l0-21swapper/109:15:321
134491430,4ptp4l0-21swapper/108:15:291
134491430,4ptp4l0-21swapper/108:00:221
134491430,3ptp4l0-21swapper/010:55:150
134491430,3ptp4l0-21swapper/010:55:150
30320994236,4cyclictest33-21ksoftirqd/208:55:102
30319994237,3cyclictest25-21ksoftirqd/110:50:001
134491420,8ptp4l0-21swapper/211:52:402
134491420,8ptp4l0-21swapper/010:44:300
134491420,6ptp4l17346-21if_enp1s010:10:151
134491420,6ptp4l0-21swapper/008:40:040
134491420,5ptp4l15348-21irqstats10:05:181
134491420,5ptp4l10298-21iostat07:35:182
134491420,5ptp4l0-21swapper/108:57:391
134491420,5ptp4l0-21swapper/011:20:120
134491420,4ptp4l28375-21apt-get09:25:111
134491420,4ptp4l22148-21diskstats11:30:150
134491420,4ptp4l0-21swapper/212:22:472
134491420,4ptp4l0-21swapper/212:06:472
134491420,3ptp4l0-21swapper/111:20:381
134491420,3ptp4l0-21swapper/007:35:580
30319994137,2cyclictest25-21ksoftirqd/109:05:001
30319994137,2cyclictest25-21ksoftirqd/109:05:001
134491410,5ptp4l13319-21irqrtprio12:20:171
134491410,5ptp4l0-21swapper/212:25:292
134491410,5ptp4l0-21swapper/212:25:292
134491410,5ptp4l0-21swapper/112:10:151
134491410,5ptp4l0-21swapper/007:20:040
134491410,4ptp4l32413-21apt-get07:15:022
134491410,4ptp4l29413-21ps08:15:260
134491410,4ptp4l28580-21apt-get10:35:132
134491410,4ptp4l21462-21apt-get09:10:111
134491410,4ptp4l17243-21apt-get11:20:092
134491410,4ptp4l0-21swapper/210:12:092
134491410,4ptp4l0-21swapper/209:57:282
134491410,4ptp4l0-21swapper/111:57:581
134491410,4ptp4l0-21swapper/111:45:161
134491410,4ptp4l0-21swapper/110:35:131
134491410,4ptp4l0-21swapper/007:56:360
134491410,3ptp4l12047-21apt-get07:40:112
134491400,5ptp4l13363-21grep08:50:241
134491400,5ptp4l0-21swapper/212:01:512
134491400,5ptp4l0-21swapper/211:35:162
134491400,5ptp4l0-21swapper/207:50:212
134491400,5ptp4l0-21swapper/207:45:112
134491400,5ptp4l0-21swapper/111:00:211
134491400,5ptp4l0-21swapper/110:04:231
134491400,4ptp4l31097-21iostat_ios08:20:180
134491400,4ptp4l0-21swapper/211:49:482
134491400,4ptp4l0-21swapper/211:08:442
134491400,4ptp4l0-21swapper/210:42:012
134491400,4ptp4l0-21swapper/210:20:162
134491400,4ptp4l0-21swapper/208:28:542
134491400,4ptp4l0-21swapper/208:15:302
134491400,4ptp4l0-21swapper/112:25:521
134491400,4ptp4l0-21swapper/112:25:521
134491400,4ptp4l0-21swapper/112:15:251
134491400,4ptp4l0-21swapper/110:43:271
134491400,4ptp4l0-21swapper/109:35:141
134491400,4ptp4l0-21swapper/108:47:181
134491400,4ptp4l0-21swapper/108:09:241
134491400,4ptp4l0-21swapper/107:18:401
134491400,4ptp4l0-21swapper/012:00:240
134491400,4ptp4l0-21swapper/011:10:250
134491400,4ptp4l0-21swapper/010:47:380
134491400,4ptp4l0-21swapper/009:52:020
134491400,4ptp4l0-21swapper/009:27:150
134491400,4ptp4l0-21swapper/009:10:190
134491400,4ptp4l0-21swapper/008:45:180
134491400,4ptp4l0-21swapper/008:00:190
134491400,4ptp4l0-21swapper/007:41:590
134491400,3ptp4l356-21apt-get08:25:111
134491400,3ptp4l3465-21diskstats10:50:151
134491400,3ptp4l24557-21memory08:05:202
134491400,3ptp4l10363-21df_inode11:05:120
134491400,3ptp4l0-21swapper/210:15:242
134491400,3ptp4l0-21swapper/111:35:191
134491400,2ptp4l17604-21df12:30:140
30318993933,4cyclictest9-21ksoftirqd/010:05:110
134491390,5ptp4l0-21swapper/111:30:031
134491390,5ptp4l0-21swapper/109:33:241
134491390,5ptp4l0-21swapper/107:20:421
134491390,4ptp4l0-21swapper/212:15:182
134491390,4ptp4l0-21swapper/211:25:132
134491390,4ptp4l0-21swapper/211:04:332
134491390,4ptp4l0-21swapper/210:55:172
134491390,4ptp4l0-21swapper/210:55:172
134491390,4ptp4l0-21swapper/210:00:282
134491390,4ptp4l0-21swapper/209:45:252
134491390,4ptp4l0-21swapper/209:17:382
134491390,4ptp4l0-21swapper/209:05:272
134491390,4ptp4l0-21swapper/208:50:162
134491390,4ptp4l0-21swapper/208:45:122
134491390,4ptp4l0-21swapper/208:43:242
134491390,4ptp4l0-21swapper/208:22:162
134491390,4ptp4l0-21swapper/208:11:022
134491390,4ptp4l0-21swapper/208:01:432
134491390,4ptp4l0-21swapper/207:21:582
134491390,4ptp4l0-21swapper/112:05:161
134491390,4ptp4l0-21swapper/111:54:081
134491390,4ptp4l0-21swapper/111:40:131
134491390,4ptp4l0-21swapper/111:29:541
134491390,4ptp4l0-21swapper/110:55:121
134491390,4ptp4l0-21swapper/110:55:121
134491390,4ptp4l0-21swapper/110:20:161
134491390,4ptp4l0-21swapper/107:49:281
134491390,4ptp4l0-21swapper/107:42:361
134491390,4ptp4l0-21swapper/107:26:551
134491390,4ptp4l0-21swapper/012:06:430
134491390,4ptp4l0-21swapper/011:42:390
134491390,4ptp4l0-21swapper/010:50:330
134491390,4ptp4l0-21swapper/010:00:140
134491390,4ptp4l0-21swapper/009:30:190
134491390,4ptp4l0-21swapper/009:07:190
134491390,4ptp4l0-21swapper/008:10:090
134491390,4ptp4l0-21swapper/008:05:170
134491390,4ptp4l0-21swapper/007:10:040
134491390,3ptp4l929-21apt-get11:55:132
134491390,3ptp4l6223-21awk08:35:231
134491390,3ptp4l28583-21df09:25:122
134491390,3ptp4l10270-21df11:05:111
134491380,4ptp4l0-21swapper/209:50:182
134491380,4ptp4l0-21swapper/107:35:111
134491380,4ptp4l0-21swapper/009:42:090
134491380,4ptp4l0-21swapper/009:35:090
134491380,4ptp4l0-21swapper/009:15:120
134491380,3ptp4l6310-21phc2sys-jitter07:25:240
134491380,3ptp4l0-21swapper/209:21:002
134491380,3ptp4l0-21swapper/010:18:160
134491370,4ptp4l0-21swapper/107:11:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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