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2025-12-07 - 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 highest latencies:
System rackdslot1.osadl.org (updated Sun Dec 07, 2025 12:45:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1994921630,6sleep21147199cyclictest07:25:242
1147099711,26cyclictest1306-21df_abs11:25:151
1147099670,30cyclictest27923-21cat10:00:281
1147099660,25cyclictest9713-21date08:15:011
1147099651,26cyclictest14898-21sed10:45:011
206712640,5sleep10-21swapper/110:55:241
1147099640,27cyclictest13003-21df_abs11:50:171
1147099620,25cyclictest4329-21ls08:00:281
1147099610,25cyclictest7409-21latency_hist09:20:011
2847191600,4ptp4l2815-21apt08:00:110
2847191600,4ptp4l11502-21apt-get07:10:133
2847191600,4ptp4l0-21swapper/210:57:302
2847191600,3ptp4l0-21swapper/007:39:480
1147199602,29cyclictest0-21swapper/208:58:042
1147099601,27cyclictest1778-21gnome-shell07:57:591
2847191590,5ptp4l0-21swapper/012:05:150
2847191590,3ptp4l0-21swapper/109:05:161
1147099591,24cyclictest23668-21switchtime12:10:251
1147099590,32cyclictest12870-21cut08:20:231
1147099590,30cyclictest18000-21seq07:21:531
306292580,4sleep00-21swapper/007:50:140
1147099582,25cyclictest0-21swapper/110:07:291
1147099580,30cyclictest11631-21seq08:17:461
2847191570,4ptp4l0-21swapper/311:45:383
2847191570,3ptp4l29019-21df_inode10:05:180
1147099571,29cyclictest2839-21seq10:17:241
1147099571,28cyclictest16837-21seq10:47:541
1147099571,28cyclictest16837-21seq10:47:541
1147099570,30cyclictest32228-21seq07:50:421
1147099570,30cyclictest12204-21seq10:37:591
1147099570,29cyclictest9433-21seq09:22:211
1147099570,29cyclictest21101-21taskset08:39:501
1147099570,28cyclictest20972-21seq09:46:071
2847191560,4ptp4l0-21swapper/312:01:133
2847191560,4ptp4l0-21swapper/011:48:340
2847191560,4ptp4l0-21swapper/011:31:030
2847191560,3ptp4l0-21swapper/009:30:150
2847191560,3ptp4l0-21swapper/008:37:460
1147199562,27cyclictest0-21swapper/211:42:552
1147099561,28cyclictest9996-21taskset11:43:051
1147099560,30cyclictest21731-21seq12:06:361
1147099560,29cyclictest453-21seq10:12:431
1147099560,29cyclictest12005-21seq09:29:551
1147099560,28cyclictest26209-21taskset11:09:131
1147099560,28cyclictest16885-21seq11:56:451
1147099560,27cyclictest5360-21taskset10:24:541
11469995622,5cyclictest9-21ksoftirqd/011:39:590
2847191550,4ptp4l0-21swapper/010:59:290
2847191550,4ptp4l0-21swapper/008:15:590
2847191550,3ptp4l0-21swapper/312:15:233
2847191550,3ptp4l0-21swapper/010:22:020
1147199553,7cyclictest7891-21awk11:39:592
1147099550,31cyclictest27582-21seq07:43:121
1147099550,30cyclictest25803-21seq09:56:021
1147099550,30cyclictest20655-21seq07:28:341
1147099550,29cyclictest7450-21seq10:27:041
1147099550,29cyclictest30019-21seq07:49:461
1147099550,28cyclictest4972-21seq09:14:431
1147099550,28cyclictest28058-21seq08:54:531
1147099550,24cyclictest23027-21ntpq11:00:231
11469995521,4cyclictest9-21ksoftirqd/010:20:010
2847191540,4ptp4l0-21swapper/009:56:440
2847191540,4ptp4l0-21swapper/008:26:460
2847191540,3ptp4l0-21swapper/312:37:543
11472995415,7cyclictest41-21ksoftirqd/309:05:003
1147199543,13cyclictest0-21swapper/208:45:182
1147099541,30cyclictest1778-21gnome-shell08:07:591
1147099541,29cyclictest23479-21seq09:53:371
1147099541,28cyclictest18553-21taskset08:31:431
1147099541,28cyclictest1778-21gnome-shell08:25:581
1147099541,28cyclictest13571-21taskset07:14:371
1147099540,30cyclictest9702-21seq10:31:171
1147099540,30cyclictest14098-21seq09:32:081
1147099540,29cyclictest26342-21seq12:16:281
1147099540,28cyclictest25479-21seq08:46:211
1147099540,28cyclictest19483-21seq12:02:271
2847191530,3ptp4l0-21swapper/011:53:290
2847191530,3ptp4l0-21swapper/011:27:190
1147099531,29cyclictest1778-21gnome-shell09:04:591
1147099531,29cyclictest1011-21seq12:33:081
1147099531,27cyclictest31043-21taskset12:27:091
1147099530,29cyclictest28354-21seq11:12:041
1147099530,29cyclictest16516-21seq09:38:301
1147099530,28cyclictest3191-21taskset12:35:351
1147099530,28cyclictest12288-21taskset11:47:021
2847191520,6ptp4l33-21ksoftirqd/209:01:122
2847191520,4ptp4l0-21swapper/011:58:480
2847191520,4ptp4l0-21swapper/009:12:390
1147199523,7cyclictest321ktimersoftd/208:09:592
1147099520,29cyclictest25230-21seq07:37:541
1147099520,29cyclictest22553-21taskset08:40:351
2847191510,4ptp4l0-21swapper/309:29:083
2847191510,4ptp4l0-21swapper/011:19:440
2847191510,4ptp4l0-21swapper/008:59:300
2847191510,4ptp4l0-21swapper/008:34:210
2847191510,3ptp4l0-21swapper/009:38:130
2847191510,3ptp4l0-21swapper/008:05:170
11472995113,4cyclictest41-21ksoftirqd/311:15:003
1147199515,7cyclictest0-21swapper/207:20:282
1147099511,28cyclictest19137-21taskset10:52:461
1147099510,22cyclictest14451-21iostat_ios07:15:201
2847191500,7ptp4l33-21ksoftirqd/207:15:152
2847191500,4ptp4l0-21swapper/008:54:570
2847191500,4ptp4l0-21swapper/008:14:460
2847191500,4ptp4l0-21swapper/007:11:300
1147199507,12cyclictest0-21swapper/211:15:192
1147199505,7cyclictest0-21swapper/211:10:352
1147199503,6cyclictest15722-21sed10:45:192
1147199503,6cyclictest15722-21sed10:45:192
1147199502,5cyclictest18740-21ntpq12:00:252
2847191490,4ptp4l0-21swapper/207:07:102
2847191490,4ptp4l0-21swapper/010:52:520
2847191490,3ptp4l0-21swapper/010:10:230
1147199498,11cyclictest0-21swapper/209:35:272
1147199496,12cyclictest0-21swapper/210:10:222
1147099490,28cyclictest18743-21seq09:42:101
11469994917,5cyclictest9-21ksoftirqd/007:50:000
11469994911,4cyclictest9-21ksoftirqd/007:25:010
2847191480,4ptp4l11937-21apache211:17:013
2847191480,3ptp4l0-21swapper/207:39:142
1147199486,6cyclictest0-21swapper/211:05:242
1147199485,7cyclictest0-21swapper/212:20:262
1147199484,7cyclictest9880-21/usr/sbin/munin09:25:142
1147199483,7cyclictest0-21swapper/210:05:292
11471994827,4cyclictest33-21ksoftirqd/212:10:142
1147199482,6cyclictest33-21ksoftirqd/210:25:212
1147199481,6cyclictest33-21ksoftirqd/207:30:282
1147199480,6cyclictest207-21systemd-journal11:25:012
2847191470,3ptp4l0-21swapper/311:40:353
2847191470,12ptp4l0-21swapper/211:55:242
11472994712,8cyclictest41-21ksoftirqd/309:45:003
1147199476,7cyclictest0-21swapper/212:30:142
1147199472,7cyclictest0-21swapper/211:25:062
1147099470,26cyclictest30830-21seq11:19:061
1147099470,19cyclictest4670-21ps11:30:251
11469994716,6cyclictest9-21ksoftirqd/009:20:300
11469994715,6cyclictest9-21ksoftirqd/008:40:570
11469994715,5cyclictest9-21ksoftirqd/011:40:130
2847191460,12ptp4l31688-21if_enp4s011:20:180
11472994618,3cyclictest41-21ksoftirqd/307:30:243
1147199466,6cyclictest0-21swapper/207:55:222
1147199465,6cyclictest27554-21sed08:50:292
1147199465,11cyclictest0-21swapper/210:35:242
1147199464,7cyclictest0-21swapper/211:32:312
1147199462,6cyclictest321ktimersoftd/207:50:182
1147199462,31cyclictest0-21swapper/210:33:432
1147199461,6cyclictest33-21ksoftirqd/211:50:262
1147199461,5cyclictest33-21ksoftirqd/209:40:122
11469994617,5cyclictest9-21ksoftirqd/007:25:160
11469994614,6cyclictest9-21ksoftirqd/007:15:330
11469994614,4cyclictest9-21ksoftirqd/011:12:130
11469994614,3cyclictest9-21ksoftirqd/012:25:000
2847191450,5ptp4l0-21swapper/012:15:130
2847191450,10ptp4l0-21swapper/208:42:392
11472994514,4cyclictest41-21ksoftirqd/307:20:193
11472994513,6cyclictest41-21ksoftirqd/307:20:013
1147199456,6cyclictest0-21swapper/207:45:192
1147199455,5cyclictest321ktimersoftd/208:20:282
1147199454,6cyclictest33-21ksoftirqd/208:30:142
1147199453,9cyclictest0-21swapper/211:45:222
1147199453,6cyclictest321ktimersoftd/209:45:162
1147199452,6cyclictest0-21swapper/208:28:532
1147199452,30cyclictest0-21swapper/208:01:582
11471994513,8cyclictest33-21ksoftirqd/212:05:272
1147199450,11cyclictest26772-21latency_hist12:20:002
11469994523,8cyclictest9-21ksoftirqd/012:35:160
11469994518,8cyclictest9-21ksoftirqd/009:15:180
11469994515,5cyclictest9-21ksoftirqd/009:05:550
11469994515,4cyclictest9-21ksoftirqd/012:03:480
11469994514,5cyclictest9-21ksoftirqd/009:00:190
11469994513,6cyclictest9-21ksoftirqd/010:40:250
11469994513,4cyclictest9-21ksoftirqd/012:25:220
1147299445,10cyclictest41-21ksoftirqd/307:35:153
1147299444,9cyclictest41-21ksoftirqd/310:15:283
1147299443,3cyclictest121rcu_preempt07:30:003
11472994416,3cyclictest41-21ksoftirqd/310:45:203
11472994416,3cyclictest41-21ksoftirqd/310:45:203
11472994413,7cyclictest41-21ksoftirqd/309:35:153
11472994412,7cyclictest41-21ksoftirqd/309:50:003
1147199445,7cyclictest0-21swapper/208:36:282
1147199442,27cyclictest0-21swapper/210:50:402
1146999447,6cyclictest9-21ksoftirqd/010:50:000
1146999447,6cyclictest9-21ksoftirqd/010:50:000
1146999444,3cyclictest121rcu_preempt12:11:340
11469994426,4cyclictest9-21ksoftirqd/008:25:010
11469994421,3cyclictest9-21ksoftirqd/010:00:180
11469994414,5cyclictest9-21ksoftirqd/010:35:230
11469994412,4cyclictest9-21ksoftirqd/007:43:240
2847191430,9ptp4l0-21swapper/212:35:162
2847191430,6ptp4l0-21swapper/208:10:242
2847191430,5ptp4l9564-21hddtemp_smartct07:05:171
2847191430,4ptp4l0-21swapper/011:02:020
2847191430,3ptp4l0-21swapper/210:41:192
1147299432,6cyclictest121rcu_preempt11:34:123
11472994313,4cyclictest41-21ksoftirqd/309:00:013
1147299430,2cyclictest121rcu_preempt08:00:003
1147199437,5cyclictest2847191ptp4l10:00:212
1147199435,7cyclictest0-21swapper/210:20:172
1147199435,6cyclictest0-21swapper/209:56:362
1147199430,7cyclictest21913-21fschecks_time09:50:172
1147099430,28cyclictest7793-21taskset11:39:411
1147099430,28cyclictest471-21taskset11:20:531
1146999435,2cyclictest121rcu_preempt09:44:230
11469994315,3cyclictest9-21ksoftirqd/009:25:180
11469994310,3cyclictest9-21ksoftirqd/007:55:160
2847191420,7ptp4l0-21swapper/307:07:363
2847191420,4ptp4l28915-21iostat08:55:181
2847191420,3ptp4l9751-21apt-get08:15:133
2847191420,3ptp4l24217-21apt-get11:05:150
11472994216,3cyclictest41-21ksoftirqd/312:10:143
11472994214,7cyclictest41-21ksoftirqd/310:05:183
11472994212,7cyclictest41-21ksoftirqd/307:55:013
11472994211,4cyclictest41-21ksoftirqd/311:55:153
1147199426,6cyclictest0-21swapper/211:00:352
1147199424,6cyclictest0-21swapper/208:15:102
1147199423,7cyclictest0-21swapper/212:25:222
11471994227,12cyclictest33-21ksoftirqd/209:05:122
1147099421,27cyclictest28656-21seq12:21:131
11469994213,5cyclictest9-21ksoftirqd/008:45:150
2847191410,5ptp4l0-21swapper/207:40:132
2847191410,5ptp4l0-21swapper/007:08:490
2847191410,4ptp4l3635-21diskstats10:20:173
2847191410,4ptp4l22576-21/usr/sbin/munin07:30:271
2847191410,4ptp4l0-21swapper/312:26:253
2847191410,4ptp4l0-21swapper/210:15:092
2847191410,4ptp4l0-21swapper/209:10:132
2847191410,3ptp4l1532-21ls09:05:203
2847191410,3ptp4l0-21swapper/309:15:103
2847191410,3ptp4l0-21swapper/209:18:582
1147299419,9cyclictest41-21ksoftirqd/308:35:163
1147299412,2cyclictest121rcu_preempt12:33:423
11472994114,7cyclictest41-21ksoftirqd/311:04:593
11472994114,3cyclictest41-21ksoftirqd/308:40:203
11472994110,4cyclictest41-21ksoftirqd/309:10:203
1147299410,2cyclictest121rcu_preempt08:52:133
1147199412,30cyclictest0-21swapper/209:22:582
11469994114,3cyclictest9-21ksoftirqd/010:25:160
11469994113,3cyclictest9-21ksoftirqd/007:30:240
11469994110,6cyclictest9-21ksoftirqd/009:45:310
11469994110,5cyclictest9-21ksoftirqd/012:30:150
2847191400,4ptp4l0-21swapper/311:27:463
2847191400,4ptp4l0-21swapper/310:55:163
2847191400,4ptp4l0-21swapper/310:35:203
2847191400,4ptp4l0-21swapper/310:10:163
2847191400,4ptp4l0-21swapper/309:22:323
2847191400,4ptp4l0-21swapper/308:03:473
2847191400,4ptp4l0-21swapper/307:45:403
2847191400,4ptp4l0-21swapper/010:30:120
2847191400,3ptp4l22111-21iostat09:50:190
1147299402,7cyclictest41-21ksoftirqd/308:10:153
1147299402,6cyclictest121rcu_preempt10:40:253
11472994013,5cyclictest41-21ksoftirqd/308:25:313
1147299400,3cyclictest121rcu_preempt08:45:143
1147299400,2cyclictest121rcu_preempt11:50:143
1147199403,7cyclictest0-21swapper/207:10:242
1147199400,6cyclictest321ktimersoftd/209:30:172
2847191390,5ptp4l0-21swapper/311:20:123
2847191390,4ptp4l0-21swapper/311:07:273
2847191390,4ptp4l0-21swapper/309:57:093
2847191390,4ptp4l0-21swapper/309:31:383
2847191390,4ptp4l0-21swapper/308:30:273
2847191390,4ptp4l0-21swapper/307:40:103
2847191390,3ptp4l17256-21apt-get10:50:143
1147299395,9cyclictest41-21ksoftirqd/308:25:003
1147299393,2cyclictest121rcu_preempt12:06:053
1147299392,2cyclictest121rcu_preempt09:53:153
1147299390,3cyclictest121rcu_preempt10:35:003
2847191380,4ptp4l0-21swapper/312:21:133
1147299382,2cyclictest121rcu_preempt10:27:503
1147299381,2cyclictest121rcu_preempt08:09:253
11472993811,9cyclictest41-21ksoftirqd/310:00:193
2847191370,3ptp4l0-21swapper/311:38:323
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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