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2025-12-21 - 21:50
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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 21, 2025 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2562599741,27cyclictest22763-21chrt11:40:131
2562599691,22cyclictest25056-21latency_hist10:35:001
2562599680,24cyclictest16195-21cut10:15:211
2562599671,62cyclictest32586-21iostat10:50:201
2562599671,27cyclictest28298-21chrt11:50:191
2562599671,27cyclictest28298-21chrt11:50:191
2562599661,30cyclictest15223-21irqrtprio07:55:181
2562599660,29cyclictest19931-21chrt11:31:471
2562599660,23cyclictest5854-21irqrtprio07:35:191
2562599660,21cyclictest20552-21df_abs10:25:151
2562599642,28cyclictest0-21swapper/107:41:191
2562599640,28cyclictest17837-21chrt11:29:221
2562599630,59cyclictest27735-21/usr/sbin/munin09:30:201
2562599630,36cyclictest16828-21ls09:05:291
2562599630,27cyclictest1081-21chrt08:34:381
2562599630,23cyclictest6694-21irqrtprio08:45:191
2562599622,19cyclictest134691getstats08:10:201
2562599622,19cyclictest0-21swapper/111:10:261
2562599620,26cyclictest14254-21awk10:10:251
2562599620,26cyclictest1084-21wc12:00:291
2562599612,30cyclictest0-21swapper/111:35:261
2562599612,28cyclictest0-21swapper/110:20:141
2562599611,57cyclictest15797-21cat12:35:011
2562599610,57cyclictest5938-21cat08:44:591
2562599610,27cyclictest18912-21seq08:02:521
2562599610,23cyclictest308-21cstates07:25:151
2562599600,29cyclictest17958-21taskset12:39:001
2562599600,28cyclictest27019-21seq10:38:221
2562599600,26cyclictest12993-21chrt11:17:071
2562599600,26cyclictest12993-21chrt11:17:071
25624996023,4cyclictest9-21ksoftirqd/012:20:000
134491600,4ptp4l10178-21sensors_temp12:20:253
134491600,4ptp4l10178-21sensors_temp12:20:253
2562599590,31cyclictest32095-21seq07:22:131
2562599590,29cyclictest5444-21taskset09:51:201
2562599590,28cyclictest31405-21taskset11:56:151
2562599590,23cyclictest8864-21if_enp4s008:50:171
25624995931,3cyclictest9-21ksoftirqd/011:15:290
25624995931,3cyclictest9-21ksoftirqd/011:15:290
25624995929,4cyclictest9-21ksoftirqd/009:15:210
25624995919,4cyclictest9-21ksoftirqd/010:15:000
2562599583,23cyclictest0-21swapper/110:43:511
2562599580,28cyclictest28432-21taskset08:21:171
2562599580,28cyclictest27410-21seq07:11:221
2562599580,28cyclictest24178-21taskset09:23:521
2562599580,21cyclictest19388-21cpu08:05:121
2562599580,20cyclictest26185-21ntpq11:45:221
134491580,4ptp4l0-21swapper/211:28:312
134491580,4ptp4l0-21swapper/109:03:461
134491580,3ptp4l0-21swapper/209:41:222
134491580,3ptp4l0-21swapper/107:05:231
2562599570,29cyclictest5978-21taskset11:00:361
2562599570,29cyclictest1890-21seq10:55:031
2562599570,28cyclictest4490-21seq07:31:201
2562599570,28cyclictest26246-21taskset09:25:471
2562599570,28cyclictest19641-21seq09:14:491
25624995727,4cyclictest9-21ksoftirqd/010:05:310
25624995724,6cyclictest9-21ksoftirqd/009:40:190
2562599563,24cyclictest0-21swapper/107:47:031
2562599561,27cyclictest10037-21seq10:01:031
2562599560,31cyclictest15340-21taskset11:21:461
2562599560,30cyclictest21836-21seq09:18:301
2562599560,29cyclictest3658-21seq12:06:041
2562599560,28cyclictest8313-21seq11:06:021
25624995626,4cyclictest9-21ksoftirqd/009:35:190
134491560,4ptp4l0-21swapper/012:26:170
134491560,3ptp4l0-21swapper/008:00:270
327012550,4sleep332702-21ps09:40:253
2562599550,29cyclictest3234-21seq08:36:501
2562599550,29cyclictest12397-21seq08:56:161
2562599550,28cyclictest12992-21taskset12:27:371
25624995521,6cyclictest9-21ksoftirqd/010:25:240
25624995519,6cyclictest9-21ksoftirqd/007:29:590
134491550,4ptp4l0-21swapper/012:24:560
134491550,4ptp4l0-21swapper/012:24:560
134491550,3ptp4l0-21swapper/010:55:120
46198540,5rtkit-daemon0-21swapper/307:43:453
2562599548,27cyclictest12867-21latency_hist10:10:001
2562599541,29cyclictest3110-21seq09:45:511
2562599541,27cyclictest6095-21taskset12:12:531
2562599540,28cyclictest29835-21seq07:18:001
2562599540,28cyclictest29835-21seq07:18:001
2562599540,27cyclictest10829-21seq12:24:211
2562599540,27cyclictest10829-21seq12:24:211
25624995424,3cyclictest9-21ksoftirqd/010:50:150
25624995422,4cyclictest9-21ksoftirqd/010:05:000
25624995420,7cyclictest9-21ksoftirqd/010:20:000
134491540,4ptp4l0-21swapper/007:55:580
134491540,3ptp4l0-21swapper/007:45:120
134491540,3ptp4l0-21swapper/007:12:330
2562599531,30cyclictest986-21taskset09:44:061
2562599530,30cyclictest31413-21taskset10:45:351
2562599530,28cyclictest7810-21seq09:57:141
2562599530,27cyclictest26134-21runrttasks08:19:171
134491530,9ptp4l23295-21apt-get07:05:122
134491530,4ptp4l0-21swapper/211:32:252
134491530,4ptp4l0-21swapper/012:11:230
134491530,4ptp4l0-21swapper/011:29:450
134491530,4ptp4l0-21swapper/010:49:540
134491530,4ptp4l0-21swapper/009:56:420
134491530,11ptp4l24313-21ls07:05:210
2562599520,30cyclictest30923-21seq09:36:561
2562599520,29cyclictest31069-21seq08:27:561
2562599520,28cyclictest8342-21seq12:17:111
25624995224,3cyclictest9-21ksoftirqd/011:56:530
25624995223,3cyclictest9-21ksoftirqd/011:31:570
25624995222,4cyclictest9-21ksoftirqd/012:39:340
25624995221,5cyclictest9-21ksoftirqd/009:05:000
25624995221,4cyclictest9-21ksoftirqd/009:50:150
25624995220,5cyclictest9-21ksoftirqd/012:30:150
25624995219,4cyclictest9-21ksoftirqd/011:55:000
25624995219,4cyclictest9-21ksoftirqd/011:55:000
25624995217,6cyclictest9-21ksoftirqd/008:20:000
134491520,4ptp4l0-21swapper/010:35:590
134491520,4ptp4l0-21swapper/008:49:170
134491520,4ptp4l0-21swapper/008:28:470
25624995121,4cyclictest9-21ksoftirqd/011:36:460
25624995021,4cyclictest9-21ksoftirqd/010:32:480
25624995020,4cyclictest9-21ksoftirqd/010:20:000
25624995019,4cyclictest9-21ksoftirqd/008:40:200
134491500,3ptp4l0-21swapper/010:40:230
25624994919,4cyclictest9-21ksoftirqd/008:22:590
25624994919,3cyclictest9-21ksoftirqd/007:35:440
25624994918,4cyclictest9-21ksoftirqd/011:13:520
25624994819,4cyclictest9-21ksoftirqd/008:09:030
25624994817,3cyclictest9-21ksoftirqd/011:43:010
25624994816,5cyclictest9-21ksoftirqd/007:15:130
25624994816,5cyclictest9-21ksoftirqd/007:15:130
25624994815,5cyclictest9-21ksoftirqd/009:10:250
25624994814,6cyclictest9-21ksoftirqd/009:10:010
134491480,3ptp4l0-21swapper/011:00:300
25624994717,5cyclictest9-21ksoftirqd/007:30:140
25624994715,5cyclictest9-21ksoftirqd/008:50:180
25624994713,6cyclictest9-21ksoftirqd/011:20:210
134491470,8ptp4l1915-21iostat_ios09:45:192
134491470,4ptp4l0-21swapper/307:05:193
134491470,4ptp4l0-21swapper/212:18:022
2562499462,2cyclictest121rcu_preempt07:50:160
25624994612,5cyclictest9-21ksoftirqd/011:05:260
25624994611,7cyclictest9-21ksoftirqd/009:45:150
134491460,7ptp4l33-21ksoftirqd/211:00:382
134491460,3ptp4l0-21swapper/007:23:240
25624994515,4cyclictest9-21ksoftirqd/009:24:300
25624994511,5cyclictest9-21ksoftirqd/009:30:270
25624994510,5cyclictest9-21ksoftirqd/008:30:150
134491450,3ptp4l0-21swapper/210:33:532
134491450,3ptp4l0-21swapper/012:00:320
25627994437,4cyclictest41-21ksoftirqd/311:00:013
2562599440,26cyclictest13892-21seq07:51:091
134491440,9ptp4l0-21swapper/211:07:132
134491440,9ptp4l0-21swapper/210:14:062
134491440,9ptp4l0-21swapper/209:50:562
134491440,9ptp4l0-21swapper/207:19:462
134491440,9ptp4l0-21swapper/207:19:462
134491440,4ptp4l13434-21apt-get12:30:142
134491440,4ptp4l0-21swapper/007:41:400
134491440,3ptp4l21635-21apt-get08:10:122
134491440,10ptp4l0-21swapper/211:12:332
25627994338,2cyclictest41-21ksoftirqd/308:39:593
25627994337,3cyclictest41-21ksoftirqd/308:19:593
25624994336,4cyclictest28626-21kworker/0:108:36:160
25624994310,6cyclictest9-21ksoftirqd/009:25:270
134491430,9ptp4l0-21swapper/212:36:532
134491430,9ptp4l0-21swapper/209:16:092
134491430,9ptp4l0-21swapper/209:13:192
134491430,9ptp4l0-21swapper/208:47:262
134491430,9ptp4l0-21swapper/208:44:232
134491430,9ptp4l0-21swapper/207:31:312
134491430,5ptp4l22758-21apt-get11:40:142
134491430,5ptp4l0-21swapper/308:50:183
134491430,5ptp4l0-21swapper/207:45:142
134491430,4ptp4l0-21swapper/211:55:402
134491430,11ptp4l0-21swapper/209:35:122
25627994236,3cyclictest41-21ksoftirqd/312:20:003
25624994237,3cyclictest12371-21kworker/0:108:58:460
134491420,9ptp4l0-21swapper/212:29:312
134491420,9ptp4l0-21swapper/212:05:042
134491420,9ptp4l0-21swapper/208:24:132
134491420,9ptp4l0-21swapper/207:51:402
134491420,9ptp4l0-21swapper/207:37:052
134491420,8ptp4l0-21swapper/210:55:182
134491420,8ptp4l0-21swapper/207:55:202
134491420,5ptp4l3046-21ntp_states12:05:230
134491420,5ptp4l26227-21ntp_states10:35:223
134491420,10ptp4l33-21ksoftirqd/208:25:552
134491410,9ptp4l0-21swapper/211:19:122
134491410,9ptp4l0-21swapper/211:19:122
134491410,8ptp4l0-21swapper/207:24:042
134491410,5ptp4l23206-21fschecks_time10:30:173
134491410,5ptp4l0-21swapper/208:37:442
134491410,4ptp4l9292-21ls08:50:202
134491410,4ptp4l26056-21meminfo10:35:182
134491410,4ptp4l0-21swapper/312:39:203
134491410,4ptp4l0-21swapper/311:53:553
134491410,4ptp4l0-21swapper/311:53:553
134491410,3ptp4l22748-21ntp_states08:10:220
134491410,3ptp4l18002-21apt-get10:20:122
25624994037,2cyclictest9-21ksoftirqd/011:45:150
134491400,5ptp4l14514-21/usr/sbin/munin12:30:243
134491400,5ptp4l0-21swapper/309:55:243
134491400,5ptp4l0-21swapper/210:16:442
134491400,4ptp4l29433-21diskstats09:35:163
134491400,4ptp4l0-21swapper/311:20:163
134491400,4ptp4l0-21swapper/309:25:233
134491400,4ptp4l0-21swapper/307:35:193
134491400,4ptp4l0-21swapper/212:12:392
134491400,4ptp4l0-21swapper/209:59:212
134491400,4ptp4l0-21swapper/209:32:362
134491400,4ptp4l0-21swapper/209:26:022
134491400,4ptp4l0-21swapper/209:00:512
134491400,4ptp4l0-21swapper/207:40:252
134491400,4ptp4l0-21swapper/207:26:002
134491400,3ptp4l0-21swapper/208:05:152
25627993933,4cyclictest41-21ksoftirqd/308:44:593
25627993933,3cyclictest41-21ksoftirqd/311:49:593
134491390,5ptp4l9639-21/usr/sbin/munin07:45:163
134491390,5ptp4l8491-21tr10:00:143
134491390,5ptp4l0-21swapper/211:35:542
134491390,4ptp4l0-21swapper/311:25:203
134491390,4ptp4l0-21swapper/309:34:143
134491390,4ptp4l0-21swapper/309:17:363
134491390,4ptp4l0-21swapper/308:55:183
134491390,4ptp4l0-21swapper/308:10:383
134491390,4ptp4l0-21swapper/307:20:443
134491390,4ptp4l0-21swapper/212:20:242
134491390,4ptp4l0-21swapper/212:20:242
134491390,4ptp4l0-21swapper/211:53:542
134491390,4ptp4l0-21swapper/211:53:542
134491390,4ptp4l0-21swapper/211:45:042
134491390,4ptp4l0-21swapper/211:24:212
134491390,4ptp4l0-21swapper/210:50:042
134491390,4ptp4l0-21swapper/210:46:522
134491390,4ptp4l0-21swapper/210:43:042
134491390,4ptp4l0-21swapper/210:25:422
134491390,4ptp4l0-21swapper/210:05:292
134491390,4ptp4l0-21swapper/210:00:182
134491390,4ptp4l0-21swapper/209:05:482
134491390,4ptp4l0-21swapper/208:30:342
134491390,4ptp4l0-21swapper/208:17:392
134491390,4ptp4l0-21swapper/207:14:012
134491390,3ptp4l0-21swapper/212:03:372
134491390,3ptp4l0-21swapper/209:20:442
25627993834,2cyclictest41-21ksoftirqd/308:06:453
25627993833,3cyclictest41-21ksoftirqd/309:00:183
25627993833,3cyclictest41-21ksoftirqd/308:24:593
134491380,4ptp4l21904-21grep10:25:293
134491380,4ptp4l0-21swapper/312:05:083
134491380,4ptp4l0-21swapper/312:04:403
134491380,4ptp4l0-21swapper/311:43:103
134491380,4ptp4l0-21swapper/311:19:403
134491380,4ptp4l0-21swapper/311:19:403
134491380,4ptp4l0-21swapper/311:06:213
134491380,4ptp4l0-21swapper/310:40:393
134491380,4ptp4l0-21swapper/310:20:493
134491380,4ptp4l0-21swapper/310:10:093
134491380,4ptp4l0-21swapper/309:52:213
134491380,4ptp4l0-21swapper/309:49:353
134491380,4ptp4l0-21swapper/309:21:393
134491380,4ptp4l0-21swapper/309:14:363
134491380,4ptp4l0-21swapper/309:06:543
134491380,4ptp4l0-21swapper/308:46:243
134491380,4ptp4l0-21swapper/308:25:003
134491380,4ptp4l0-21swapper/307:55:143
134491380,4ptp4l0-21swapper/307:51:143
134491380,4ptp4l0-21swapper/208:56:462
134491380,4ptp4l0-21swapper/208:01:352
134491380,3ptp4l31397-21sshd11:56:093
134491380,3ptp4l0-21swapper/311:32:543
134491380,3ptp4l0-21swapper/310:17:013
25627993733,3cyclictest41-21ksoftirqd/307:15:173
25627993733,3cyclictest41-21ksoftirqd/307:15:173
134491370,4ptp4l0-21swapper/312:25:183
134491370,4ptp4l0-21swapper/311:12:443
134491370,4ptp4l0-21swapper/311:01:233
134491370,4ptp4l0-21swapper/310:48:213
134491370,4ptp4l0-21swapper/307:30:453
134491370,4ptp4l0-21swapper/307:11:373
134491370,3ptp4l0-21swapper/310:05:313
134491370,3ptp4l0-21swapper/308:04:583
134491370,13ptp4l0-21swapper/307:26:033
25627993631,3cyclictest41-21ksoftirqd/310:50:213
134491360,4ptp4l0-21swapper/311:37:303
25627993530,3cyclictest41-21ksoftirqd/312:10:193
134491350,4ptp4l0-21swapper/308:30:343
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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