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2026-09-18 - 17:39
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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 Fri Sep 18, 2026 12:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
570321750,4sleep1335699cyclictest09:35:001
3357998311,37cyclictest926-21cat08:15:112
3357998010,67cyclictest0-21swapper/208:50:002
335799717,61cyclictest4801-21mailstats09:30:252
3357996811,17cyclictest5643-21sed07:15:012
3357996810,16cyclictest29077-21grep10:25:112
134491670,19ptp4l5634-21apt-get08:25:090
3357996510,12cyclictest15541-21uniq11:05:152
3357996413,12cyclictest8043-21awk10:50:002
3357996312,11cyclictest9742-21head09:40:272
134491630,5ptp4l26665-21apt11:30:101
3357996213,12cyclictest23987-21latency_hist10:15:002
335799617,11cyclictest2196-21wc10:35:202
134491610,4ptp4l0-21swapper/211:17:122
207042600,3sleep20-21swapper/212:25:152
207042600,3sleep20-21swapper/212:25:152
335899597,10cyclictest9060-21open_files08:30:213
335899595,6cyclictest0-21swapper/312:25:233
335899595,6cyclictest0-21swapper/312:25:233
3357995911,12cyclictest14078-21sed12:10:192
3357995910,13cyclictest11330-21grep07:25:212
134491590,4ptp4l0-21swapper/109:25:241
134491590,4ptp4l0-21swapper/009:56:430
134491590,3ptp4l0-21swapper/209:45:072
134491580,4ptp4l0-21swapper/107:24:291
134491580,3ptp4l0-21swapper/107:50:281
134491580,18ptp4l5363-21chrt11:51:350
134491570,5ptp4l0-21swapper/207:07:002
134491570,4ptp4l0-21swapper/110:39:451
134491570,4ptp4l0-21swapper/012:08:010
134491570,3ptp4l0-21swapper/110:57:001
134491570,3ptp4l0-21swapper/107:55:281
134491570,3ptp4l0-21swapper/012:22:360
134491570,15ptp4l0-21swapper/011:35:190
3357995612,10cyclictest14289-21taskset07:30:372
3357995610,16cyclictest32750-21taskset08:10:382
134491560,4ptp4l0-21swapper/112:25:231
134491560,4ptp4l0-21swapper/112:25:231
134491560,4ptp4l0-21swapper/110:08:331
134491560,4ptp4l0-21swapper/008:22:390
134491560,3ptp4l0-21swapper/107:10:241
134491560,3ptp4l0-21swapper/010:30:290
134491560,13ptp4l0-21swapper/110:30:261
335799558,15cyclictest21948-21/usr/sbin/munin09:00:282
134491550,5ptp4l0-21swapper/008:45:590
134491550,5ptp4l0-21swapper/008:05:140
134491550,4ptp4l0-21swapper/111:09:121
134491550,4ptp4l0-21swapper/109:00:071
134491550,4ptp4l0-21swapper/009:51:000
134491550,4ptp4l0-21swapper/009:35:450
134491550,3ptp4l0-21swapper/109:10:271
134491550,3ptp4l0-21swapper/012:39:130
134491550,3ptp4l0-21swapper/011:19:590
134491550,3ptp4l0-21swapper/008:19:040
335899545,6cyclictest3896-21sed10:40:113
335899540,10cyclictest19864-21hddtemp_smartct08:55:173
3357995412,7cyclictest14211-21users08:40:272
3357995410,10cyclictest10835-21irqrtprio08:35:182
134491540,5ptp4l0-21swapper/107:05:161
134491540,4ptp4l0-21swapper/008:57:140
134491540,4ptp4l0-21swapper/007:30:430
134491540,3ptp4l0-21swapper/011:34:550
134491540,3ptp4l0-21swapper/008:10:220
134491530,4ptp4l0-21swapper/010:21:230
134491530,4ptp4l0-21swapper/007:48:220
134491530,3ptp4l0-21swapper/010:45:140
134491530,3ptp4l0-21swapper/008:32:140
134491530,3ptp4l0-21swapper/007:20:390
335899529,12cyclictest0-21swapper/309:40:253
335899528,7cyclictest0-21swapper/307:15:223
335899527,16cyclictest3344-21chrt10:39:333
335899523,15cyclictest26653-21/usr/sbin/munin11:30:263
3357995214,11cyclictest16738-21seq09:56:182
134491520,5ptp4l0-21swapper/009:23:150
134491520,4ptp4l0-21swapper/108:00:241
134491520,4ptp4l0-21swapper/010:27:500
134491520,4ptp4l0-21swapper/009:29:310
134491520,4ptp4l0-21swapper/008:04:170
134491520,4ptp4l0-21swapper/007:18:500
134491520,3ptp4l0-21swapper/110:15:301
134491520,3ptp4l0-21swapper/007:10:270
335899519,11cyclictest0-21swapper/309:10:223
335899518,7cyclictest0-21swapper/311:25:123
335899517,11cyclictest0-21swapper/311:40:143
335899516,6cyclictest0-21swapper/307:50:183
335799517,10cyclictest0-21swapper/208:05:182
134491510,4ptp4l0-21swapper/108:50:371
134491510,4ptp4l0-21swapper/007:40:460
134491510,3ptp4l0-21swapper/108:05:271
134491510,17ptp4l0-21swapper/312:22:503
335899503,16cyclictest22058-21/usr/sbin/munin11:20:223
335799508,11cyclictest24446-21fschecks_count07:55:152
3357995013,11cyclictest26062-21seq09:07:002
134491500,5ptp4l27943-21timedrift10:20:261
134491500,3ptp4l0-21swapper/108:25:171
134491500,10ptp4l2073-21ntpq07:05:220
335899498,6cyclictest0-21swapper/310:55:143
3357994915,31cyclictest5678-21taskset10:44:432
134491490,4ptp4l0-21swapper/111:13:151
134491490,4ptp4l0-21swapper/011:28:470
134491490,4ptp4l0-21swapper/009:41:540
134491490,4ptp4l0-21swapper/008:43:300
134491490,4ptp4l0-21swapper/007:37:020
134491490,3ptp4l0-21swapper/010:01:060
134491490,3ptp4l0-21swapper/009:00:560
335899489,7cyclictest0-21swapper/309:07:173
335899484,6cyclictest0-21swapper/307:37:213
335899482,5cyclictest0-21swapper/310:05:233
335799488,37cyclictest0-21swapper/207:35:122
335799482,11cyclictest0-21swapper/208:20:282
134491480,4ptp4l0-21swapper/307:09:373
134491480,4ptp4l0-21swapper/107:29:041
134491480,3ptp4l335599cyclictest11:57:570
134491480,3ptp4l0-21swapper/009:09:200
134491480,12ptp4l0-21swapper/109:44:281
335899475,16cyclictest12679-21chrt09:50:103
3358994710,11cyclictest0-21swapper/312:35:223
335899470,10cyclictest0-21swapper/308:10:263
3357994710,16cyclictest28569-21apt-get10:25:012
134491470,4ptp4l0-21swapper/110:47:151
134491470,4ptp4l0-21swapper/110:26:371
134491470,4ptp4l0-21swapper/108:45:391
335899469,11cyclictest0-21swapper/312:06:143
335899469,11cyclictest0-21swapper/310:47:543
335899462,6cyclictest0-21swapper/310:10:133
134491460,4ptp4l0-21swapper/008:52:210
134491460,3ptp4l0-21swapper/111:02:351
134491460,3ptp4l0-21swapper/109:55:321
335899457,6cyclictest0-21swapper/309:33:453
335899454,9cyclictest0-21swapper/309:01:423
335799459,12cyclictest15663-21wc12:15:122
335799459,10cyclictest0-21swapper/207:48:122
335599452,3cyclictest9-21ksoftirqd/010:10:180
134491450,9ptp4l0-21swapper/212:07:422
134491450,4ptp4l0-21swapper/112:11:571
134491450,3ptp4l0-21swapper/111:51:211
134491450,3ptp4l0-21swapper/111:42:481
134491450,3ptp4l0-21swapper/007:55:380
134491450,23ptp4l25-21ksoftirqd/112:09:111
335899447,6cyclictest0-21swapper/308:40:123
335899443,10cyclictest0-21swapper/308:26:323
335599440,6cyclictest121rcu_preempt09:15:170
134491440,9ptp4l0-21swapper/211:34:092
134491440,9ptp4l0-21swapper/210:18:442
134491440,4ptp4l0-21swapper/107:41:561
134491440,3ptp4l8465-21apt-get12:00:102
134491440,3ptp4l0-21swapper/210:08:552
134491440,3ptp4l0-21swapper/108:19:121
134491440,2ptp4l101ktimersoftd/011:41:480
335899435,11cyclictest752-21chrt09:24:033
335899430,14cyclictest16342-21ls08:45:273
3357994310,30cyclictest26642-21df_abs08:00:142
3356994338,3cyclictest25-21ksoftirqd/108:35:001
3356994338,3cyclictest25-21ksoftirqd/108:24:591
3356994338,2cyclictest25-21ksoftirqd/111:50:011
134491430,9ptp4l0-21swapper/212:34:332
134491430,9ptp4l0-21swapper/211:47:262
134491430,9ptp4l0-21swapper/211:03:072
134491430,9ptp4l0-21swapper/210:01:352
134491430,9ptp4l0-21swapper/207:54:172
134491430,8ptp4l0-21swapper/211:29:332
134491430,8ptp4l0-21swapper/108:12:541
134491430,5ptp4l0-21swapper/311:35:123
134491430,4ptp4l0-21swapper/109:48:311
134491430,4ptp4l0-21swapper/008:37:090
134491430,3ptp4l0-21swapper/011:24:550
134491430,10ptp4l0-21swapper/112:30:251
3355994236,3cyclictest9-21ksoftirqd/011:10:000
134491420,9ptp4l0-21swapper/211:22:432
134491420,8ptp4l0-21swapper/211:14:492
134491420,8ptp4l0-21swapper/208:56:052
134491420,5ptp4l0-21swapper/009:45:150
134491420,4ptp4l8252-21apt-get10:50:113
134491420,4ptp4l25-21ksoftirqd/108:35:251
134491420,4ptp4l24151-21users12:30:270
134491420,4ptp4l10849-21df_inode10:55:130
134491420,4ptp4l0-21swapper/112:04:041
134491420,4ptp4l0-21swapper/012:19:540
134491420,4ptp4l0-21swapper/011:11:490
134491420,3ptp4l0-21swapper/107:31:301
335899419,6cyclictest0-21swapper/309:35:333
335899419,6cyclictest0-21swapper/308:18:063
335899416,6cyclictest0-21swapper/310:15:133
3357994115,12cyclictest496-21chrt09:20:502
3357994113,15cyclictest6139-21cut09:35:182
3357994113,10cyclictest26688-21runrttasks12:38:252
134491410,8ptp4l0-21swapper/212:23:312
134491410,5ptp4l0-21swapper/012:10:200
134491410,5ptp4l0-21swapper/010:35:230
134491410,4ptp4l19905-21df_inode10:05:140
134491410,4ptp4l15837-21meminfo07:35:191
134491410,4ptp4l0-21swapper/210:30:102
134491410,4ptp4l0-21swapper/112:15:131
134491410,4ptp4l0-21swapper/110:43:501
134491410,4ptp4l0-21swapper/010:18:530
134491410,4ptp4l0-21swapper/007:26:570
134491410,3ptp4l5891-21apt-get11:55:122
134491410,3ptp4l2791-21ls11:45:273
134491410,3ptp4l17306-21apt-get10:00:111
134491410,3ptp4l0-21swapper/012:01:350
134491410,3ptp4l0-21swapper/009:33:440
134491410,15ptp4l0-21swapper/012:29:290
134491410,15ptp4l0-21swapper/012:29:290
335799409,11cyclictest0-21swapper/211:36:452
3357994034,4cyclictest33-21ksoftirqd/207:21:272
3357994013,16cyclictest17186-21taskset07:40:072
134491400,5ptp4l0-21swapper/312:00:113
134491400,5ptp4l0-21swapper/308:00:123
134491400,4ptp4l23331-21/usr/sbin/munin11:20:231
134491400,4ptp4l13434-21iostat_ios11:00:170
134491400,4ptp4l12680-21/usr/sbin/munin09:50:162
134491400,4ptp4l0-21swapper/312:15:213
134491400,4ptp4l0-21swapper/311:15:293
134491400,4ptp4l0-21swapper/311:10:203
134491400,4ptp4l0-21swapper/307:20:143
134491400,4ptp4l0-21swapper/210:56:222
134491400,4ptp4l0-21swapper/210:52:332
134491400,4ptp4l0-21swapper/209:15:182
134491400,4ptp4l0-21swapper/110:50:171
134491400,4ptp4l0-21swapper/109:38:101
134491400,4ptp4l0-21swapper/011:45:120
134491400,3ptp4l7067-21phc2sys-jitter11:55:231
134491400,3ptp4l25080-21df_inode12:35:141
134491400,3ptp4l0-21swapper/109:18:291
134491400,3ptp4l0-21swapper/009:12:420
134491390,5ptp4l0-21swapper/310:25:013
134491390,5ptp4l0-21swapper/007:50:180
134491390,4ptp4l0-21swapper/312:00:003
134491390,4ptp4l0-21swapper/311:00:123
134491390,4ptp4l0-21swapper/310:20:283
134491390,4ptp4l0-21swapper/310:00:163
134491390,4ptp4l0-21swapper/309:55:133
134491390,4ptp4l0-21swapper/309:15:123
134491390,4ptp4l0-21swapper/308:37:133
134491390,4ptp4l0-21swapper/308:20:243
134491390,4ptp4l0-21swapper/308:05:253
134491390,4ptp4l0-21swapper/307:45:103
134491390,4ptp4l0-21swapper/211:51:112
134491390,4ptp4l0-21swapper/211:40:202
134491390,4ptp4l0-21swapper/209:29:522
134491390,4ptp4l0-21swapper/209:12:572
134491390,4ptp4l0-21swapper/208:53:562
134491390,4ptp4l0-21swapper/208:31:502
134491390,4ptp4l0-21swapper/207:16:182
134491390,4ptp4l0-21swapper/111:16:581
134491390,4ptp4l0-21swapper/109:50:371
134491390,4ptp4l0-21swapper/108:57:241
134491390,4ptp4l0-21swapper/108:40:281
134491390,3ptp4l4499-21irqstats10:40:160
134491390,3ptp4l31655-21hddtemp_smartct09:20:161
134491390,3ptp4l20452-21meminfo07:45:191
134491390,3ptp4l18371-21if_enp1s012:20:151
134491390,3ptp4l0-21swapper/208:26:352
134491390,3ptp4l0-21swapper/010:52:140
335899381,11cyclictest0-21swapper/312:30:263
134491380,4ptp4l22036-21cpuspeed_turbos10:10:131
134491380,4ptp4l0-21swapper/312:10:183
134491380,4ptp4l0-21swapper/310:31:553
134491380,4ptp4l0-21swapper/309:25:263
134491380,4ptp4l0-21swapper/308:50:133
134491380,4ptp4l0-21swapper/307:55:173
134491380,4ptp4l0-21swapper/307:30:143
134491380,4ptp4l0-21swapper/307:25:163
134491380,4ptp4l0-21swapper/307:10:453
134491380,4ptp4l0-21swapper/107:15:061
134491380,3ptp4l0-21swapper/111:35:581
134491380,3ptp4l0-21swapper/111:25:271
134491380,3ptp4l0-21swapper/109:06:231
134491380,2ptp4l16203-21strings11:05:213
134491370,4ptp4l0-21swapper/311:54:373
134491370,4ptp4l0-21swapper/307:40:213
134491340,4ptp4l0-21swapper/309:47:533
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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