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2026-05-17 - 15:57
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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 Sun May 17, 2026 12:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
260332820,4sleep20-21swapper/208:35:172
18398997034,5cyclictest9-21ksoftirqd/012:35:000
18398996424,6cyclictest9-21ksoftirqd/011:35:220
18398996324,4cyclictest9-21ksoftirqd/009:25:240
134491610,4ptp4l0-21swapper/311:23:523
18398996028,3cyclictest9-21ksoftirqd/007:30:120
18398996024,6cyclictest9-21ksoftirqd/008:20:140
134491600,5ptp4l0-21swapper/109:10:161
18398995833,7cyclictest9-21ksoftirqd/012:09:590
18398995830,6cyclictest9-21ksoftirqd/007:10:150
18398995827,4cyclictest9-21ksoftirqd/010:25:000
18398995826,8cyclictest9-21ksoftirqd/009:35:010
18398995825,5cyclictest9-21ksoftirqd/009:10:240
18398995822,4cyclictest9-21ksoftirqd/010:00:290
134491580,4ptp4l0-21swapper/311:16:093
134491580,4ptp4l0-21swapper/108:15:181
1839999571,54cyclictest21764-21kworker/1:111:30:281
1839899579,3cyclictest9-21ksoftirqd/009:00:260
18398995726,4cyclictest9-21ksoftirqd/011:15:170
18398995723,6cyclictest9-21ksoftirqd/012:15:010
18398995722,4cyclictest9-21ksoftirqd/012:35:160
18398995722,3cyclictest9-21ksoftirqd/011:30:020
18398995721,5cyclictest9-21ksoftirqd/007:50:240
134491570,4ptp4l0-21swapper/307:55:173
134491570,4ptp4l0-21swapper/012:20:270
134491570,3ptp4l0-21swapper/009:24:390
134491570,20ptp4l0-21swapper/211:52:572
18398995626,4cyclictest9-21ksoftirqd/009:20:000
18398995626,3cyclictest9-21ksoftirqd/010:45:240
18398995619,5cyclictest9-21ksoftirqd/011:30:010
134491560,8ptp4l17684-21grep07:05:280
134491560,4ptp4l25654-21apt-get09:45:123
134491560,3ptp4l0-21swapper/108:50:251
134491560,3ptp4l0-21swapper/107:35:311
134491560,3ptp4l0-21swapper/008:50:240
1839899555,5cyclictest18382-21cat08:20:000
18398995522,5cyclictest9-21ksoftirqd/009:55:000
18398995518,4cyclictest9-21ksoftirqd/012:15:170
134491550,4ptp4l0-21swapper/308:20:113
134491550,4ptp4l0-21swapper/011:59:150
134491550,4ptp4l0-21swapper/008:14:450
134491550,3ptp4l0-21swapper/109:35:001
204622540,5sleep30-21swapper/309:30:583
1839899548,3cyclictest9-21ksoftirqd/011:45:220
1839899545,4cyclictest13852-21turbostat.cron10:30:000
18398995421,5cyclictest9-21ksoftirqd/007:20:140
134491540,4ptp4l212-21systemd-journal09:55:003
134491540,4ptp4l0-21swapper/307:46:213
134491540,3ptp4l0-21swapper/310:25:253
134491540,3ptp4l0-21swapper/208:30:282
134491540,3ptp4l0-21swapper/207:21:562
134491540,16ptp4l0-21swapper/209:10:512
134491540,13ptp4l0-21swapper/208:26:422
134491540,12ptp4l0-21swapper/210:55:532
248972530,5sleep30-21swapper/309:40:283
1839899536,3cyclictest9-21ksoftirqd/009:55:220
1839899535,4cyclictest23088-21cron09:40:010
18398995328,3cyclictest9-21ksoftirqd/010:40:270
18398995311,2cyclictest3074-21cpuspeed_turbos12:25:140
134491530,4ptp4l0-21swapper/312:34:083
134491530,4ptp4l0-21swapper/311:09:533
134491530,3ptp4l0-21swapper/211:45:322
134491530,3ptp4l0-21swapper/107:11:141
1839899528,3cyclictest21052-21cut08:25:140
1839899527,3cyclictest9-21ksoftirqd/008:35:260
1839899522,5cyclictest25272-21cat08:35:000
18398995218,5cyclictest9-21ksoftirqd/009:05:250
1839899521,7cyclictest9-21ksoftirqd/011:40:190
134491520,4ptp4l2768-21cstates10:05:130
134491520,4ptp4l0-21swapper/311:02:143
134491520,16ptp4l0-21swapper/208:46:142
1839899515,4cyclictest25480-21grep09:45:010
18398995124,5cyclictest9-21ksoftirqd/007:45:160
134491510,9ptp4l16065-21apt-get07:05:132
134491510,7ptp4l0-21swapper/209:41:532
1839899505,5cyclictest0-21swapper/011:05:250
1839899503,3cyclictest0-21swapper/010:50:220
1839899502,3cyclictest0-21swapper/010:30:170
18398995023,5cyclictest9-21ksoftirqd/011:00:210
1839899501,6cyclictest9-21ksoftirqd/010:15:240
18398995010,7cyclictest9-21ksoftirqd/011:20:170
134491500,5ptp4l0-21swapper/107:06:231
134491500,4ptp4l0-21swapper/309:06:343
134491500,4ptp4l0-21swapper/308:58:573
134491500,4ptp4l0-21swapper/207:14:002
134491500,3ptp4l0-21swapper/210:02:362
134491500,10ptp4l5193-21hddtemp_smartct07:50:153
121122500,5sleep20-21swapper/211:35:012
1839899498,6cyclictest9-21ksoftirqd/007:35:120
1839899497,3cyclictest9-21ksoftirqd/008:55:270
1839899495,7cyclictest9-21ksoftirqd/007:30:000
134491490,4ptp4l0-21swapper/209:47:522
134491490,4ptp4l0-21swapper/207:18:062
134491490,4ptp4l0-21swapper/111:22:451
1839899485,3cyclictest19639-21irqrtprio11:50:180
134491480,9ptp4l0-21swapper/211:30:562
134491480,9ptp4l0-21swapper/210:52:132
134491480,4ptp4l0-21swapper/109:00:351
134491480,3ptp4l0-21swapper/111:14:441
134491480,3ptp4l0-21swapper/107:47:431
134491480,13ptp4l0-21swapper/210:45:152
1839899472,5cyclictest9-21ksoftirqd/009:45:210
1839899472,2cyclictest6925-21turbostat10:15:000
1839899471,6cyclictest9-21ksoftirqd/008:40:150
1839899470,5cyclictest453-21tune2fs11:10:180
134491470,4ptp4l0-21swapper/307:42:243
134491470,4ptp4l0-21swapper/212:36:072
1839899464,3cyclictest9-21ksoftirqd/008:05:140
1839899463,2cyclictest0-21swapper/012:00:250
1839899462,5cyclictest26350-21sed10:55:190
1839899461,4cyclictest0-21swapper/008:00:280
1839899460,2cyclictest121rcu_preempt07:15:130
134491460,6ptp4l16371-21diskstats07:05:163
134491460,3ptp4l0-21swapper/312:16:313
134491460,3ptp4l0-21swapper/212:30:572
134491460,3ptp4l0-21swapper/112:21:101
134491460,3ptp4l0-21swapper/108:44:511
134491460,2ptp4l231rcuc/110:20:251
1839899456,6cyclictest7372-21chrt07:55:150
1839899453,2cyclictest121rcu_preempt07:40:210
1839899452,3cyclictest0-21swapper/010:35:190
134491450,9ptp4l0-21swapper/008:47:480
134491450,4ptp4l0-21swapper/310:24:143
134491450,4ptp4l0-21swapper/211:17:252
134491450,4ptp4l0-21swapper/210:29:232
134491450,3ptp4l0-21swapper/310:35:483
134491450,3ptp4l0-21swapper/207:43:432
134491450,3ptp4l0-21swapper/110:26:101
134491440,9ptp4l0-21swapper/108:00:051
134491440,4ptp4l23293-21apt-get10:50:111
134491440,4ptp4l0-21swapper/212:13:252
134491440,3ptp4l0-21swapper/311:50:243
134491440,3ptp4l0-21swapper/311:35:493
134491440,3ptp4l0-21swapper/210:11:312
134491440,3ptp4l0-21swapper/107:23:161
18399994322,19cyclictest25-21ksoftirqd/110:48:371
134491430,5ptp4l0-21swapper/308:50:253
134491430,5ptp4l0-21swapper/308:05:143
134491430,4ptp4l0-21swapper/310:01:143
134491430,3ptp4l0-21swapper/210:05:222
134491430,3ptp4l0-21swapper/209:50:582
18399994230,10cyclictest25-21ksoftirqd/112:00:291
134491420,9ptp4l0-21swapper/209:04:362
134491420,6ptp4l14672-21df11:40:131
134491420,5ptp4l32619-21apt-get10:00:141
134491420,5ptp4l0-21swapper/310:30:263
134491420,5ptp4l0-21swapper/107:40:221
134491420,4ptp4l9619-21df_inode09:10:143
134491420,4ptp4l32452-21apt-get08:50:122
134491420,4ptp4l30300-21apt-get09:55:131
134491420,4ptp4l20891-21apt-get08:25:131
134491420,4ptp4l17218-21memory08:15:193
134491420,4ptp4l0-21swapper/210:20:272
134491420,4ptp4l0-21swapper/209:19:592
134491420,4ptp4l0-21swapper/207:57:512
134491420,4ptp4l0-21swapper/207:35:112
1839999413,36cyclictest0-21swapper/111:01:481
134491410,9ptp4l0-21swapper/210:35:512
134491410,5ptp4l0-21swapper/308:45:153
134491410,4ptp4l9384-21apt-get08:00:163
134491410,4ptp4l30157-21apt-get08:45:121
134491410,4ptp4l16576-21diskstats08:15:142
134491410,4ptp4l0-21swapper/309:25:233
134491410,4ptp4l0-21swapper/308:30:583
134491410,4ptp4l0-21swapper/307:22:033
134491410,4ptp4l0-21swapper/211:20:162
134491410,4ptp4l0-21swapper/211:03:272
134491410,4ptp4l0-21swapper/208:40:152
134491410,4ptp4l0-21swapper/208:05:152
134491410,4ptp4l0-21swapper/107:50:171
134491410,3ptp4l21039-21apt-get09:35:131
18399994033,4cyclictest25-21ksoftirqd/112:20:001
134491400,9ptp4l0-21swapper/209:23:532
134491400,6ptp4l25-21ksoftirqd/109:20:001
134491400,5ptp4l29271-21meminfo12:10:201
134491400,5ptp4l22459-21ls09:35:263
134491400,5ptp4l0-21swapper/111:45:211
134491400,4ptp4l5186-21apt-get12:30:111
134491400,4ptp4l3324-21hddtemp_smartct12:25:163
134491400,4ptp4l25970-21apt-get12:05:113
134491400,4ptp4l24237-21iostat12:00:182
134491400,4ptp4l14187-21df08:10:162
134491400,4ptp4l0-21swapper/311:40:153
134491400,4ptp4l0-21swapper/310:10:483
134491400,4ptp4l0-21swapper/309:15:193
134491400,4ptp4l0-21swapper/308:10:213
134491400,4ptp4l0-21swapper/307:30:143
134491400,4ptp4l0-21swapper/212:25:282
134491400,4ptp4l0-21swapper/212:06:092
134491400,4ptp4l0-21swapper/211:40:122
134491400,4ptp4l0-21swapper/210:30:252
134491400,4ptp4l0-21swapper/208:55:172
134491400,4ptp4l0-21swapper/208:02:592
134491400,4ptp4l0-21swapper/207:50:232
134491400,4ptp4l0-21swapper/207:31:582
134491400,4ptp4l0-21swapper/110:05:161
134491400,4ptp4l0-21swapper/109:05:241
134491400,4ptp4l0-21swapper/108:35:181
134491400,3ptp4l28854-21memory07:30:191
134491400,3ptp4l20558-21ls11:50:271
134491400,3ptp4l20014-21ls08:20:262
134491400,3ptp4l16743-21df_inode09:25:141
134491400,3ptp4l0-21swapper/209:35:232
1839999390,4cyclictest15489-21python09:20:241
1839999390,3cyclictest19026-21hddtemp_smartct08:20:161
134491390,5ptp4l0-21swapper/311:47:553
134491390,5ptp4l0-21swapper/309:00:143
134491390,5ptp4l0-21swapper/211:25:182
134491390,4ptp4l25-21ksoftirqd/110:15:211
134491390,4ptp4l1840199cyclictest07:16:553
134491390,4ptp4l0-21swapper/312:35:223
134491390,4ptp4l0-21swapper/312:04:513
134491390,4ptp4l0-21swapper/310:55:003
134491390,4ptp4l0-21swapper/310:05:183
134491390,4ptp4l0-21swapper/309:55:253
134491390,4ptp4l0-21swapper/308:41:273
134491390,4ptp4l0-21swapper/308:35:093
134491390,4ptp4l0-21swapper/308:25:143
134491390,4ptp4l0-21swapper/307:35:143
134491390,4ptp4l0-21swapper/307:28:143
134491390,4ptp4l0-21swapper/307:14:103
134491390,4ptp4l0-21swapper/212:23:072
134491390,4ptp4l0-21swapper/210:42:452
134491390,4ptp4l0-21swapper/209:56:562
134491390,4ptp4l0-21swapper/209:31:292
134491390,4ptp4l0-21swapper/209:26:162
134491390,4ptp4l0-21swapper/209:05:142
134491390,4ptp4l0-21swapper/207:49:072
134491390,4ptp4l0-21swapper/207:25:012
134491390,4ptp4l0-21swapper/112:35:131
134491390,4ptp4l0-21swapper/111:36:511
134491390,4ptp4l0-21swapper/111:05:281
134491390,4ptp4l0-21swapper/110:30:571
134491390,4ptp4l0-21swapper/110:10:301
134491390,4ptp4l0-21swapper/109:50:121
134491390,4ptp4l0-21swapper/109:47:241
134491390,4ptp4l0-21swapper/108:31:591
134491390,4ptp4l0-21swapper/108:13:131
134491390,4ptp4l0-21swapper/108:05:131
134491390,4ptp4l0-21swapper/107:15:161
134491390,3ptp4l30690-21hddtemp_smartct11:05:172
134491390,3ptp4l28890-21iostat12:10:183
134491390,3ptp4l26766-21ps07:25:241
134491390,3ptp4l22370-21ls11:55:201
134491390,3ptp4l15096-21memory09:20:203
134491390,3ptp4l0-21swapper/110:55:231
134491380,5ptp4l0-21swapper/312:20:133
134491380,4ptp4l8976-21sed11:25:273
134491380,4ptp4l3031-21/usr/sbin/munin11:15:181
134491380,4ptp4l22453-21grep11:55:212
134491380,4ptp4l0-21swapper/311:30:493
134491380,4ptp4l0-21swapper/310:45:263
134491380,4ptp4l0-21swapper/310:15:163
134491380,4ptp4l0-21swapper/210:15:172
134491380,4ptp4l0-21swapper/112:25:201
134491380,4ptp4l0-21swapper/112:09:341
134491380,4ptp4l0-21swapper/110:36:431
134491380,4ptp4l0-21swapper/109:40:171
134491380,4ptp4l0-21swapper/107:55:141
134491380,3ptp4l32140-21sed12:15:272
134491380,3ptp4l21354-21apt-get11:55:123
134491380,3ptp4l0-21swapper/310:41:223
134491380,3ptp4l0-21swapper/110:40:081
134491370,4ptp4l0-21swapper/310:55:143
134491370,3ptp4l0-21swapper/311:10:193
134491370,3ptp4l0-21swapper/211:13:222
134491370,3ptp4l0-21swapper/108:55:201
134491360,4ptp4l0-21swapper/111:26:551
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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