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2026-09-11 - 23:42
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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 Sep 11, 2026 12:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
67222680,7sleep11694999cyclictest09:05:211
34732680,7sleep21695099cyclictest09:00:122
134691660,36getstats41-21ksoftirqd/311:10:323
134491660,4ptp4l3846-21hddtemp_smartct10:10:201
11902640,1sleep01193-21grep10:05:140
16951996328,6cyclictest41-21ksoftirqd/312:10:213
1695199632,24cyclictest0-21swapper/310:27:583
16951996227,7cyclictest41-21ksoftirqd/307:30:263
1695199622,22cyclictest0-21swapper/308:44:593
16951996133,9cyclictest41-21ksoftirqd/308:25:143
16951996127,3cyclictest41-21ksoftirqd/310:55:013
16951996125,10cyclictest41-21ksoftirqd/311:50:583
110822610,7sleep01694899cyclictest08:05:220
16951996030,6cyclictest41-21ksoftirqd/312:30:003
16951996027,7cyclictest41-21ksoftirqd/308:15:133
16951996026,8cyclictest41-21ksoftirqd/311:45:133
134491600,4ptp4l16715-21apt-get08:20:051
16951995921,7cyclictest41-21ksoftirqd/312:00:243
16951995921,7cyclictest41-21ksoftirqd/312:00:233
16951995918,4cyclictest41-21ksoftirqd/308:00:123
1694899595,7cyclictest134491ptp4l09:15:260
134491590,9ptp4l15702-21/usr/sbin/munin07:05:211
16951995829,8cyclictest41-21ksoftirqd/308:55:173
16951995829,7cyclictest41-21ksoftirqd/309:30:233
16951995829,6cyclictest41-21ksoftirqd/311:00:283
16951995822,4cyclictest41-21ksoftirqd/312:05:253
16950995826,30cyclictest33-21ksoftirqd/210:25:172
16951995729,7cyclictest41-21ksoftirqd/311:55:133
16951995728,7cyclictest41-21ksoftirqd/307:50:253
16951995727,3cyclictest41-21ksoftirqd/310:35:203
16951995726,8cyclictest41-21ksoftirqd/311:30:273
16951995726,7cyclictest41-21ksoftirqd/308:08:233
16951995726,4cyclictest41-21ksoftirqd/312:20:043
16951995725,10cyclictest41-21ksoftirqd/310:30:143
16951995720,9cyclictest41-21ksoftirqd/312:30:203
134491570,4ptp4l0-21swapper/311:20:293
134491570,4ptp4l0-21swapper/108:40:231
134491570,3ptp4l1777-21grep07:45:201
134491570,3ptp4l0-21swapper/108:45:131
134491570,3ptp4l0-21swapper/011:55:250
16951995639,3cyclictest41-21ksoftirqd/307:48:223
16951995631,6cyclictest41-21ksoftirqd/309:44:083
16951995630,7cyclictest41-21ksoftirqd/309:23:393
16951995626,3cyclictest41-21ksoftirqd/308:20:203
16951995623,9cyclictest41-21ksoftirqd/310:15:143
16951995622,8cyclictest41-21ksoftirqd/309:50:303
16951995614,6cyclictest41-21ksoftirqd/310:22:283
16951995528,6cyclictest41-21ksoftirqd/312:38:483
16951995528,6cyclictest41-21ksoftirqd/309:55:133
16951995527,6cyclictest41-21ksoftirqd/308:10:183
16951995525,4cyclictest41-21ksoftirqd/311:15:123
16951995521,8cyclictest41-21ksoftirqd/312:15:133
134491550,3ptp4l0-21swapper/308:33:073
16951995443,3cyclictest41-21ksoftirqd/311:40:593
16951995424,9cyclictest41-21ksoftirqd/310:00:173
16951995422,4cyclictest41-21ksoftirqd/307:55:273
16948995431,20cyclictest9-21ksoftirqd/009:20:110
134491540,4ptp4l0-21swapper/109:17:251
16951995333,6cyclictest41-21ksoftirqd/308:45:153
1695199532,7cyclictest0-21swapper/309:25:233
16951995321,5cyclictest41-21ksoftirqd/311:26:033
1695199531,8cyclictest0-21swapper/309:16:053
16951995316,7cyclictest41-21ksoftirqd/307:21:223
134491530,4ptp4l0-21swapper/109:59:011
134491530,16ptp4l0-21swapper/008:50:150
16951995225,3cyclictest41-21ksoftirqd/309:05:183
16951995225,3cyclictest41-21ksoftirqd/309:04:183
16951995224,3cyclictest41-21ksoftirqd/310:09:453
16951995221,7cyclictest41-21ksoftirqd/307:15:213
16951995218,7cyclictest41-21ksoftirqd/311:07:563
16951995216,8cyclictest41-21ksoftirqd/310:14:163
16949995220,4cyclictest25-21ksoftirqd/111:45:201
134491520,3ptp4l0-21swapper/109:43:231
16951995117,4cyclictest41-21ksoftirqd/309:45:273
1695199511,3cyclictest121rcu_preempt07:44:493
134491510,4ptp4l0-21swapper/208:24:052
134491510,4ptp4l0-21swapper/111:25:291
134491510,4ptp4l0-21swapper/111:14:541
134491510,4ptp4l0-21swapper/109:29:001
134491510,4ptp4l0-21swapper/009:04:230
134491510,3ptp4l0-21swapper/210:09:222
134491510,12ptp4l0-21swapper/211:25:402
16951995016,8cyclictest41-21ksoftirqd/310:46:433
16949995017,6cyclictest25-21ksoftirqd/109:35:001
134491500,4ptp4l0-21swapper/209:46:022
134491500,4ptp4l0-21swapper/111:33:201
134491500,4ptp4l0-21swapper/109:39:271
134491500,3ptp4l0-21swapper/108:18:421
16951994933,6cyclictest41-21ksoftirqd/309:35:273
16949994919,7cyclictest25-21ksoftirqd/109:20:191
134491490,4ptp4l0-21swapper/110:26:361
134491490,4ptp4l0-21swapper/108:09:111
134491490,4ptp4l0-21swapper/107:24:141
134491490,10ptp4l15959-21python07:05:250
16951994831,7cyclictest41-21ksoftirqd/309:10:183
16951994816,3cyclictest41-21ksoftirqd/307:35:153
134491480,4ptp4l0-21swapper/110:32:341
134491480,3ptp4l0-21swapper/110:03:181
134491480,11ptp4l0-21swapper/211:01:182
134491480,10ptp4l0-21swapper/209:15:112
1695199475,5cyclictest41-21ksoftirqd/308:50:233
16951994719,7cyclictest41-21ksoftirqd/310:55:223
1695199470,6cyclictest24098-21cpuspeed_turbos07:25:133
16949994717,7cyclictest25-21ksoftirqd/112:24:591
134491470,5ptp4l14156-21apt-get07:05:032
134491470,4ptp4l0-21swapper/111:22:501
134491470,4ptp4l0-21swapper/109:51:171
134491470,4ptp4l0-21swapper/108:36:271
134491470,3ptp4l0-21swapper/110:36:211
134491470,3ptp4l0-21swapper/107:10:521
16951994633,6cyclictest41-21ksoftirqd/310:40:093
16951994631,8cyclictest41-21ksoftirqd/311:38:223
1695199462,6cyclictest0-21swapper/307:10:143
1695199460,3cyclictest121rcu_preempt08:39:223
134491460,3ptp4l0-21swapper/111:05:201
134491460,3ptp4l0-21swapper/108:33:361
16949994514,4cyclictest25-21ksoftirqd/112:05:011
16949994514,4cyclictest25-21ksoftirqd/112:05:011
16949994510,8cyclictest25-21ksoftirqd/112:15:111
134491450,4ptp4l697-21apt-get07:45:122
134491450,4ptp4l0-21swapper/207:42:312
16950994439,3cyclictest33-21ksoftirqd/207:20:012
134491440,4ptp4l7703-21apt-get08:00:120
134491440,4ptp4l0-21swapper/108:51:341
134491440,4ptp4l0-21swapper/009:25:510
134491440,3ptp4l0-21swapper/112:31:121
134491440,3ptp4l0-21swapper/012:17:550
134491440,3ptp4l0-21swapper/007:44:260
134491440,11ptp4l0-21swapper/211:10:132
16950994331,4cyclictest33-21ksoftirqd/212:20:232
16950994330,4cyclictest33-21ksoftirqd/209:25:222
134491430,9ptp4l0-21swapper/209:09:582
134491430,9ptp4l0-21swapper/208:48:372
134491430,9ptp4l0-21swapper/208:17:112
134491430,4ptp4l12733-21hddtemp_smartct08:10:161
134491430,4ptp4l0-21swapper/109:00:021
134491430,3ptp4l19703-21apt-get08:25:131
16950994237,3cyclictest33-21ksoftirqd/211:49:592
16950994237,3cyclictest33-21ksoftirqd/210:20:002
16950994231,3cyclictest33-21ksoftirqd/209:55:142
1694999429,3cyclictest25-21ksoftirqd/110:15:241
16949994216,7cyclictest25-21ksoftirqd/107:32:361
16949994211,7cyclictest25-21ksoftirqd/112:13:061
134491420,9ptp4l0-21swapper/211:30:252
134491420,9ptp4l0-21swapper/208:07:272
134491420,9ptp4l0-21swapper/012:36:130
134491420,5ptp4l20659-21python07:15:240
134491420,4ptp4l24357-21hddtemp_smartct07:25:160
134491420,3ptp4l23419-21ls08:30:270
46198410,3rtkit-daemon0-21swapper/211:55:342
16950994135,3cyclictest33-21ksoftirqd/208:35:182
16950994130,9cyclictest33-21ksoftirqd/207:35:272
16950994130,8cyclictest33-21ksoftirqd/212:00:272
16950994130,8cyclictest33-21ksoftirqd/212:00:272
1694999417,3cyclictest25-21ksoftirqd/112:40:001
16949994135,3cyclictest25-21ksoftirqd/107:16:591
1694999413,2cyclictest121rcu_preempt10:05:181
134491410,8ptp4l0-21swapper/208:03:132
134491410,5ptp4l19635-21apt-get09:35:110
134491410,5ptp4l0-21swapper/307:05:013
134491410,5ptp4l0-21swapper/111:42:411
134491410,5ptp4l0-21swapper/107:25:261
134491410,4ptp4l8975-21meminfo10:20:191
134491410,4ptp4l31953-21ntp_states07:40:221
134491410,4ptp4l23303-21users07:20:272
134491410,4ptp4l20919-21ntp_states10:45:221
134491410,4ptp4l18863-21users08:20:290
134491410,4ptp4l18073-21iostat10:40:170
134491410,4ptp4l0-21swapper/111:56:281
134491410,4ptp4l0-21swapper/111:53:551
134491410,4ptp4l0-21swapper/008:35:260
134491410,3ptp4l3661-21iostat_ios07:50:180
134491410,3ptp4l22945-21meminfo08:30:212
134491410,2ptp4l121rcu_preempt12:20:150
16950994034,3cyclictest33-21ksoftirqd/210:47:582
16950994029,9cyclictest33-21ksoftirqd/208:55:232
16949994035,3cyclictest25-21ksoftirqd/109:45:191
16949994034,3cyclictest25-21ksoftirqd/112:10:001
16949994034,3cyclictest25-21ksoftirqd/107:35:141
16949994013,7cyclictest25-21ksoftirqd/111:15:171
16949994011,7cyclictest25-21ksoftirqd/108:58:101
134491400,5ptp4l0-21swapper/111:00:221
134491400,5ptp4l0-21swapper/009:40:190
134491400,4ptp4l8238-21df10:20:130
134491400,4ptp4l5471-21users11:20:312
134491400,4ptp4l27499-21meminfo09:50:250
134491400,4ptp4l2592-21memory12:25:191
134491400,4ptp4l23525-21ls10:50:260
134491400,4ptp4l22837-21iostat_ios12:00:170
134491400,4ptp4l22837-21iostat_ios12:00:170
134491400,4ptp4l22313-21df10:50:151
134491400,4ptp4l15495-21irqstats08:15:190
134491400,4ptp4l0-21swapper/211:39:142
134491400,4ptp4l0-21swapper/210:23:382
134491400,4ptp4l0-21swapper/011:15:240
134491400,4ptp4l0-21swapper/009:14:230
134491400,4ptp4l0-21swapper/008:56:210
134491400,4ptp4l0-21swapper/007:35:250
134491400,4ptp4l0-21swapper/007:33:180
134491400,3ptp4l3417-21apt-get10:10:170
134491400,3ptp4l29222-21df11:05:120
134491400,3ptp4l27078-21apt-get12:10:182
134491400,3ptp4l22254-21df_inode09:40:152
134491400,3ptp4l18481-21ls07:10:272
134491400,3ptp4l11489-21memory10:25:190
134491400,3ptp4l0-21swapper/210:43:582
134491400,3ptp4l0-21swapper/008:46:210
16950993934,3cyclictest33-21ksoftirqd/209:21:022
1695099391,5cyclictest121rcu_preempt08:44:362
16949993934,3cyclictest25-21ksoftirqd/111:35:181
134491390,5ptp4l0-21swapper/212:18:582
134491390,5ptp4l0-21swapper/210:37:312
134491390,5ptp4l0-21swapper/011:35:180
134491390,5ptp4l0-21swapper/010:35:200
134491390,4ptp4l27925-21awk08:40:260
134491390,4ptp4l13828-21ls10:30:190
134491390,4ptp4l0-21swapper/212:37:252
134491390,4ptp4l0-21swapper/212:34:422
134491390,4ptp4l0-21swapper/211:50:592
134491390,4ptp4l0-21swapper/211:05:172
134491390,4ptp4l0-21swapper/210:58:472
134491390,4ptp4l0-21swapper/210:31:432
134491390,4ptp4l0-21swapper/209:53:572
134491390,4ptp4l0-21swapper/208:53:102
134491390,4ptp4l0-21swapper/207:51:092
134491390,4ptp4l0-21swapper/207:34:302
134491390,4ptp4l0-21swapper/110:56:591
134491390,4ptp4l0-21swapper/110:43:181
134491390,4ptp4l0-21swapper/109:10:231
134491390,4ptp4l0-21swapper/011:31:160
134491390,4ptp4l0-21swapper/011:25:220
134491390,4ptp4l0-21swapper/011:10:210
134491390,4ptp4l0-21swapper/011:01:090
134491390,4ptp4l0-21swapper/010:57:460
134491390,4ptp4l0-21swapper/009:05:190
134491390,4ptp4l0-21swapper/008:10:230
134491390,4ptp4l0-21swapper/007:20:190
134491390,3ptp4l28748-21users12:10:330
134491390,3ptp4l24240-21diskstats07:25:152
134491390,3ptp4l17287-21diskstats07:10:150
134491390,3ptp4l0-21swapper/007:45:250
16950993835,2cyclictest33-21ksoftirqd/208:00:002
16950993833,3cyclictest33-21ksoftirqd/210:11:302
134491380,5ptp4l15985-21sed11:45:180
134491380,5ptp4l0-21swapper/107:55:121
134491380,4ptp4l4379-21hddtemp_smartct12:30:220
134491380,4ptp4l17562-21grep09:30:160
134491380,4ptp4l0-21swapper/212:06:222
134491380,4ptp4l0-21swapper/210:52:572
134491380,4ptp4l0-21swapper/210:03:522
134491380,4ptp4l0-21swapper/209:32:012
134491380,4ptp4l0-21swapper/108:00:121
134491380,4ptp4l0-21swapper/107:50:191
134491380,4ptp4l0-21swapper/012:25:100
134491380,4ptp4l0-21swapper/012:05:230
134491380,4ptp4l0-21swapper/011:52:370
134491380,4ptp4l0-21swapper/011:41:460
134491380,4ptp4l0-21swapper/011:22:070
134491380,4ptp4l0-21swapper/010:00:260
134491380,4ptp4l0-21swapper/009:55:150
134491380,4ptp4l0-21swapper/008:25:120
134491380,4ptp4l0-21swapper/007:55:250
134491380,3ptp4l9-21ksoftirqd/010:45:110
134491380,3ptp4l0-21swapper/211:40:442
134491380,3ptp4l0-21swapper/211:17:332
134491380,3ptp4l0-21swapper/209:37:012
134491380,3ptp4l0-21swapper/209:10:312
134491380,3ptp4l0-21swapper/208:25:212
134491380,3ptp4l0-21swapper/009:45:330
134491370,4ptp4l0-21swapper/212:27:182
134491370,4ptp4l0-21swapper/208:11:432
134491370,3ptp4l0-21swapper/010:15:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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