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2026-06-28 - 20:36
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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 Jun 28, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491700,3ptp4l0-21swapper/012:05:140
375699681,23cyclictest6628-21cat07:15:171
3758996711,10cyclictest26924-21chrt12:39:003
9002660,5sleep00-21swapper/011:40:250
375699661,29cyclictest12748-21taskset07:29:291
134491660,4ptp4l18054-21/usr/sbin/munin12:20:202
134491660,32ptp4l25-21ksoftirqd/108:40:141
375699652,19cyclictest0-21swapper/108:55:001
375699650,29cyclictest924-21taskset10:31:391
375699641,23cyclictest30411-21processes08:05:231
375699640,24cyclictest27579-21sed11:30:151
375899635,17cyclictest3945-21cstates08:20:143
3758996312,11cyclictest31270-21chrt10:29:303
375699632,25cyclictest0-21swapper/112:20:001
375699631,29cyclictest3558-21grep08:19:591
375699630,24cyclictest14237-21sed11:00:191
375699630,23cyclictest10253-21chrt08:33:271
375899628,16cyclictest4247-21awk11:50:113
134491620,5ptp4l0-21swapper/207:05:572
375699611,21cyclictest22789-21cpuspeed_turbos12:30:111
375899595,14cyclictest0-21swapper/307:30:263
3758995911,9cyclictest727-21awk10:30:283
139402590,5sleep00-21swapper/012:10:170
134491590,4ptp4l0-21swapper/210:31:532
375699580,21cyclictest28316-21grep09:10:261
134491580,4ptp4l0-21swapper/208:15:162
134491580,15ptp4l0-21swapper/008:50:190
375699576,18cyclictest7935-21taskset09:36:171
375699571,25cyclictest5484-21seq08:21:101
134491570,4ptp4l0-21swapper/212:37:582
134491570,4ptp4l0-21swapper/012:16:360
134491570,3ptp4l0-21swapper/012:30:220
375699560,24cyclictest14155-21ntpq07:30:221
375699560,23cyclictest5218-21ssh07:10:281
375899558,15cyclictest20524-21/usr/sbin/munin11:15:143
375899555,15cyclictest26853-21/usr/sbin/munin08:00:153
375699552,28cyclictest0-21swapper/111:15:281
134491550,4ptp4l0-21swapper/110:25:261
134491550,4ptp4l0-21swapper/007:55:200
134491550,3ptp4l0-21swapper/008:58:150
134491550,3ptp4l0-21swapper/008:58:150
3758995412,6cyclictest137891phc2sys09:15:143
375699540,26cyclictest6129-21taskset11:53:351
375699540,25cyclictest31421-21taskset11:36:501
375699540,25cyclictest24191-21seq10:12:221
134491540,4ptp4l0-21swapper/209:58:392
375899537,12cyclictest0-21swapper/308:34:283
375899534,11cyclictest3372-21cat11:45:273
375699532,24cyclictest17586-21seq11:09:071
375699530,25cyclictest12672-21taskset08:39:191
375699530,23cyclictest5883-21seq09:34:281
134491530,4ptp4l0-21swapper/312:00:303
134491530,4ptp4l0-21swapper/208:51:072
134491530,4ptp4l0-21swapper/009:39:070
134491530,3ptp4l0-21swapper/211:54:392
134491530,3ptp4l0-21swapper/008:34:180
134491530,3ptp4l0-21swapper/007:42:240
375899527,5cyclictest0-21swapper/312:19:423
375899527,11cyclictest0-21swapper/307:41:083
375899526,14cyclictest19328-21ls10:00:273
375699521,34cyclictest22322-21seq12:28:551
375699521,26cyclictest31168-21seq09:17:391
375699520,26cyclictest8075-21seq10:48:411
375699520,25cyclictest6473-21seq11:55:081
375699520,25cyclictest3469-21seq09:28:021
375699520,25cyclictest24190-21seq07:53:411
134491520,4ptp4l0-21swapper/009:21:070
134491520,4ptp4l0-21swapper/007:34:180
134491520,14ptp4l0-21swapper/010:30:290
134491520,12ptp4l0-21swapper/010:20:230
375899518,7cyclictest134691getstats10:45:193
375899517,9cyclictest0-21swapper/308:44:393
375899515,15cyclictest23757-21ls07:50:253
375899515,10cyclictest5076-21run-parts07:10:253
375699511,26cyclictest991-21seq08:13:551
375699510,27cyclictest12982-21seq10:59:161
375699510,26cyclictest915-21seq09:20:441
375699510,26cyclictest3397-21seq10:37:541
134491510,3ptp4l0-21swapper/207:38:322
375899508,6cyclictest0-21swapper/308:48:413
375699500,26cyclictest10841-21seq12:04:511
375699500,24cyclictest22012-21taskset08:58:201
375699500,24cyclictest22012-21taskset08:58:201
375699500,24cyclictest15074-21taskset09:53:331
134491500,4ptp4l0-21swapper/011:21:530
134491500,12ptp4l0-21swapper/012:25:180
375899497,9cyclictest0-21swapper/310:09:453
375899497,8cyclictest1084-21ls11:40:253
375699491,25cyclictest26738-21runrttasks09:09:491
375699490,25cyclictest26424-21seq07:57:551
375699490,24cyclictest15261-21taskset12:11:561
134491490,3ptp4l0-21swapper/207:49:192
134491490,13ptp4l2429-21date07:05:203
375699481,25cyclictest21954-21taskset07:49:271
375699481,24cyclictest24437-21seq11:23:231
375699480,26cyclictest10121-21seq07:20:561
375699480,24cyclictest26592-21seq11:26:321
134491480,4ptp4l0-21swapper/212:27:282
134491480,4ptp4l0-21swapper/212:17:482
134491480,3ptp4l0-21swapper/210:40:252
134491480,3ptp4l0-21swapper/210:15:582
134491480,3ptp4l0-21swapper/210:15:582
375899477,7cyclictest134491ptp4l11:00:113
375899477,11cyclictest0-21swapper/307:35:103
375899476,6cyclictest0-21swapper/308:39:213
375899474,16cyclictest20089-21/usr/sbin/munin08:55:183
375899474,16cyclictest20089-21/usr/sbin/munin08:55:183
3758994710,9cyclictest0-21swapper/308:16:293
375699470,23cyclictest24938-21taskset12:35:071
134491470,9ptp4l0-21swapper/209:35:152
134491470,8ptp4l0-21swapper/211:15:262
134491470,3ptp4l0-21swapper/210:55:562
134491470,3ptp4l0-21swapper/209:53:322
134491470,3ptp4l0-21swapper/011:16:470
375899465,16cyclictest32041-21cut08:10:183
375899462,16cyclictest0-21swapper/311:35:153
3758994613,18cyclictest26499-21taskset07:58:533
3758994612,10cyclictest5669-21runrttasks09:31:433
134491460,4ptp4l0-21swapper/309:45:213
134491460,4ptp4l0-21swapper/208:04:092
134491460,4ptp4l0-21swapper/207:19:352
134491460,3ptp4l0-21swapper/209:11:012
375699450,25cyclictest13052-21taskset12:08:031
134491450,4ptp4l0-21swapper/209:34:012
134491450,4ptp4l0-21swapper/109:46:491
134491450,13ptp4l9-21ksoftirqd/008:02:490
375699441,32cyclictest17088-21seq07:36:121
3755994437,4cyclictest9-21ksoftirqd/011:05:010
134491440,9ptp4l0-21swapper/311:20:093
134491440,5ptp4l0-21swapper/009:55:140
134491440,4ptp4l31464-21apt-get08:10:130
134491440,3ptp4l0-21swapper/210:21:172
134491440,10ptp4l0-21swapper/208:10:292
375899437,7cyclictest25835-21ls11:25:213
134491430,9ptp4l9-21ksoftirqd/008:41:310
134491430,9ptp4l0-21swapper/011:08:300
134491430,8ptp4l0-21swapper/212:03:232
134491430,4ptp4l2318-21gnome-shell11:59:592
134491430,4ptp4l19960-21apt-get07:45:113
134491430,4ptp4l0-21swapper/211:33:302
134491430,10ptp4l0-21swapper/010:18:390
134491430,10ptp4l0-21swapper/010:18:390
375899429,14cyclictest23266-21irqstats09:00:213
375899426,16cyclictest16462-21ls09:55:233
375699420,16cyclictest134491ptp4l11:40:261
134691420,10getstats0-21swapper/009:42:300
134491420,7ptp4l9-21ksoftirqd/009:48:250
134491420,5ptp4l28548-21/usr/sbin/munin08:00:271
134491420,5ptp4l0-21swapper/109:40:201
134491420,4ptp4l22659-21apt-get12:30:102
134491420,4ptp4l0-21swapper/211:26:482
134491420,4ptp4l0-21swapper/210:39:012
134491420,4ptp4l0-21swapper/209:20:532
134491420,4ptp4l0-21swapper/110:21:261
134491420,3ptp4l18848-21ls11:10:201
134491420,3ptp4l18069-21apt-get12:20:103
3755994137,2cyclictest9-21ksoftirqd/010:50:010
3755994136,3cyclictest9-21ksoftirqd/011:35:000
134691410,9getstats0-21swapper/010:14:040
134691410,11getstats18472-21iostat11:10:190
134491410,8ptp4l0-21swapper/210:02:092
134491410,6ptp4l24484-21cut10:15:012
134491410,5ptp4l0-21swapper/011:35:250
134491410,5ptp4l0-21swapper/009:27:580
134491410,4ptp4l8198-21apt-get10:50:011
134491410,4ptp4l4317-21iostat_ios08:20:180
134491410,4ptp4l2740-21irqstats11:45:191
134491410,4ptp4l26217-21ls10:15:261
134491410,4ptp4l26217-21ls10:15:261
134491410,4ptp4l21009-21memory10:05:201
134491410,4ptp4l10697-21apt-get07:25:140
134491410,4ptp4l0-21swapper/310:40:283
134491410,4ptp4l0-21swapper/211:00:362
134491410,4ptp4l0-21swapper/210:48:572
134491410,4ptp4l0-21swapper/208:45:192
134491410,4ptp4l0-21swapper/012:01:590
134491410,4ptp4l0-21swapper/010:05:480
134491410,4ptp4l0-21swapper/008:06:500
134491410,4ptp4l0-21swapper/007:50:220
134491410,4ptp4l0-21swapper/007:35:380
134491410,3ptp4l3155-21ls09:25:293
134491410,2ptp4l26869-21apt-get11:30:053
375899407,12cyclictest0-21swapper/310:35:273
375899405,8cyclictest0-21swapper/309:14:323
3758994011,18cyclictest19735-21taskset11:12:133
3755994036,3cyclictest9-21ksoftirqd/007:15:000
3755994034,3cyclictest9-21ksoftirqd/008:49:590
134491400,8ptp4l0-21swapper/207:34:322
134491400,5ptp4l375599cyclictest10:35:290
134491400,5ptp4l29627-21/usr/sbin/munin09:15:140
134491400,5ptp4l0-21swapper/312:30:263
134491400,5ptp4l0-21swapper/310:10:213
134491400,5ptp4l0-21swapper/209:00:232
134491400,5ptp4l0-21swapper/208:05:222
134491400,5ptp4l0-21swapper/107:07:211
134491400,5ptp4l0-21swapper/007:07:240
134491400,4ptp4l8943-21df_inode10:50:140
134491400,4ptp4l7159-21ntp_states08:25:231
134491400,4ptp4l2385-21/usr/sbin/munin11:45:180
134491400,4ptp4l12666-21users10:55:260
134491400,4ptp4l12111-21meminfo12:05:202
134491400,4ptp4l0-21swapper/312:10:223
134491400,4ptp4l0-21swapper/311:07:023
134491400,4ptp4l0-21swapper/310:20:203
134491400,4ptp4l0-21swapper/211:12:412
134491400,4ptp4l0-21swapper/209:29:402
134491400,4ptp4l0-21swapper/207:50:192
134491400,4ptp4l0-21swapper/207:20:122
134491400,4ptp4l0-21swapper/012:35:100
134491400,4ptp4l0-21swapper/012:22:070
134491400,4ptp4l0-21swapper/011:56:580
134491400,4ptp4l0-21swapper/011:50:420
134491400,4ptp4l0-21swapper/010:29:020
134491400,4ptp4l0-21swapper/009:13:420
134491400,4ptp4l0-21swapper/008:25:330
134491400,4ptp4l0-21swapper/007:49:150
134491400,3ptp4l8399-21apt-get07:20:113
134491400,3ptp4l3841-21apt-get10:40:120
134491400,3ptp4l2056-21df11:45:152
134491400,3ptp4l0-21swapper/210:25:422
134491400,3ptp4l0-21swapper/009:50:560
375899396,5cyclictest0-21swapper/309:20:523
375899396,5cyclictest0-21swapper/308:53:253
375899395,4cyclictest0-21swapper/310:52:563
375899395,11cyclictest0-21swapper/308:06:253
3755993934,3cyclictest9-21ksoftirqd/008:35:230
134491390,6ptp4l0-21swapper/309:50:213
134491390,5ptp4l6767-21tr09:35:183
134491390,5ptp4l1301-21snmpd07:27:313
134491390,5ptp4l0-21swapper/212:10:222
134491390,5ptp4l0-21swapper/208:55:242
134491390,5ptp4l0-21swapper/208:55:242
134491390,5ptp4l0-21swapper/207:25:242
134491390,4ptp4l0-21swapper/312:27:393
134491390,4ptp4l0-21swapper/310:55:503
134491390,4ptp4l0-21swapper/310:17:063
134491390,4ptp4l0-21swapper/310:17:063
134491390,4ptp4l0-21swapper/309:05:203
134491390,4ptp4l0-21swapper/211:41:232
134491390,4ptp4l0-21swapper/211:35:202
134491390,4ptp4l0-21swapper/211:24:092
134491390,4ptp4l0-21swapper/209:40:232
134491390,4ptp4l0-21swapper/208:39:412
134491390,4ptp4l0-21swapper/208:24:502
134491390,4ptp4l0-21swapper/207:56:492
134491390,4ptp4l0-21swapper/207:10:082
134491390,4ptp4l0-21swapper/110:02:361
134491390,4ptp4l0-21swapper/109:01:481
134491390,4ptp4l0-21swapper/011:25:230
134491390,4ptp4l0-21swapper/009:31:420
134491390,4ptp4l0-21swapper/009:00:010
134491390,4ptp4l0-21swapper/008:15:300
134491390,4ptp4l0-21swapper/007:20:580
134491390,4ptp4l0-21swapper/007:17:080
134491390,3ptp4l30261-21meminfo09:15:192
134491390,3ptp4l10175-21users09:40:293
134491390,3ptp4l0-21swapper/211:08:172
134491390,3ptp4l0-21swapper/209:05:092
134491380,4ptp4l17664-21apt07:40:111
134491380,4ptp4l0-21swapper/312:07:323
134491380,4ptp4l0-21swapper/311:55:103
134491380,4ptp4l0-21swapper/308:25:503
134491380,4ptp4l0-21swapper/307:17:373
134491380,4ptp4l0-21swapper/210:50:172
134491380,4ptp4l0-21swapper/210:05:252
134491380,4ptp4l0-21swapper/209:49:422
134491380,4ptp4l0-21swapper/208:32:472
134491380,4ptp4l0-21swapper/208:27:252
134491380,4ptp4l0-21swapper/112:22:201
134491380,4ptp4l0-21swapper/110:40:261
134491380,4ptp4l0-21swapper/009:05:250
134491380,3ptp4l0-21swapper/207:42:332
134491380,3ptp4l0-21swapper/109:59:041
134491380,3ptp4l0-21swapper/108:48:071
134491370,4ptp4l0-21swapper/208:40:262
134491370,4ptp4l0-21swapper/010:01:400
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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