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2026-06-24 - 23:22
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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 rackdslot4.osadl.org (updated Wed Jun 24, 2026 12:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
174442208173,23sleep30-21swapper/307:09:223
173342202169,22sleep00-21swapper/007:07:530
172852202170,22sleep20-21swapper/207:07:232
172542202169,22sleep10-21swapper/107:06:581
777321510,5sleep31779199cyclictest11:05:253
1385918262,11phc2sys0-21swapper/307:10:013
120952790,5sleep212099-21irqrtprio11:15:192
138491740,1ptp4l391rcuc/310:00:003
1779099730,22cyclictest16778-21phc2sys-jitter08:10:222
138491680,1ptp4l31383-21irqstats07:35:203
1779099650,22cyclictest3584-21cut12:05:002
1779099650,22cyclictest29815-21grep08:35:282
1779099650,22cyclictest29815-21grep08:35:282
1779099640,26cyclictest12279-21cat08:00:262
1779099620,20cyclictest21324-21sed10:30:142
1779099610,24cyclictest14872-21vmstat08:05:292
85272600,2sleep30-21swapper/307:55:133
1779099600,19cyclictest16354-21hddtemp_smartct10:20:152
1779099580,24cyclictest24855-21mailstats10:35:252
1779099570,25cyclictest27130-21sshd07:25:432
1779099570,22cyclictest20293-21cat11:30:262
1779099570,18cyclictest7457-21phc2sys12:10:212
138491570,1ptp4l401ktimersoftd/310:15:133
192232560,2sleep20-21swapper/208:15:222
1779099561,19cyclictest0-21swapper/208:40:132
199582550,1sleep10-21swapper/109:20:241
1779099550,22cyclictest1319-21snmpd10:42:022
138491550,1ptp4l401ktimersoftd/309:19:083
134991550,6getstats1779199cyclictest09:27:473
1779099530,20cyclictest4649-21processes08:50:222
138491520,0ptp4l401ktimersoftd/310:40:503
11402520,4sleep2321ktimersoftd/212:00:002
138491480,0ptp4l401ktimersoftd/309:34:573
1778899452,2cyclictest9-21ksoftirqd/012:00:000
138491450,0ptp4l401ktimersoftd/310:32:493
138491450,0ptp4l401ktimersoftd/309:05:293
17790994411,18cyclictest7688-21rt-features11:05:242
1778899446,3cyclictest9-21ksoftirqd/008:35:000
138491440,0ptp4l401ktimersoftd/311:55:253
17790994314,27cyclictest0-21swapper/212:35:232
17790994313,21cyclictest14870-21phc2sys-jitter12:25:212
1778899430,3cyclictest9-21ksoftirqd/011:05:000
17789994225,4cyclictest25-21ksoftirqd/111:15:251
1779099410,18cyclictest0-21swapper/210:45:212
1778999414,11cyclictest25-21ksoftirqd/107:45:011
1779099400,22cyclictest12013-21grep10:10:202
17789994035,3cyclictest25-21ksoftirqd/112:29:591
17789994035,3cyclictest25-21ksoftirqd/110:50:011
17789994035,3cyclictest25-21ksoftirqd/109:45:001
17789994035,3cyclictest25-21ksoftirqd/107:24:591
17789994025,4cyclictest25-21ksoftirqd/108:25:211
138491400,1ptp4l401ktimersoftd/308:04:373
1779099390,26cyclictest13644-21/usr/sbin/munin11:20:192
1779099390,15cyclictest1319-21snmpd09:33:372
17789993933,3cyclictest25-21ksoftirqd/110:30:001
17789993925,4cyclictest25-21ksoftirqd/108:20:271
17789993925,3cyclictest25-21ksoftirqd/111:05:191
17789993923,3cyclictest25-21ksoftirqd/111:10:241
17789993923,3cyclictest25-21ksoftirqd/108:40:271
17789993922,4cyclictest25-21ksoftirqd/109:10:131
17789993922,4cyclictest25-21ksoftirqd/108:45:141
17788993935,3cyclictest9-21ksoftirqd/007:20:000
17788993932,4cyclictest9-21ksoftirqd/011:55:010
17788993925,3cyclictest9-21ksoftirqd/012:15:150
1778899391,3cyclictest9-21ksoftirqd/010:55:220
1778899390,6cyclictest121rcu_preempt11:20:010
1779099380,26cyclictest0-21swapper/211:40:192
17789993834,2cyclictest25-21ksoftirqd/112:40:001
17789993833,3cyclictest25-21ksoftirqd/110:55:161
17789993833,3cyclictest25-21ksoftirqd/109:00:011
17789993828,4cyclictest25-21ksoftirqd/110:35:241
17789993824,3cyclictest25-21ksoftirqd/111:55:261
17789993823,3cyclictest25-21ksoftirqd/111:40:171
17789993823,3cyclictest25-21ksoftirqd/111:35:251
1778899384,2cyclictest121rcu_preempt12:10:250
17788993834,2cyclictest9-21ksoftirqd/010:20:000
1778899383,3cyclictest9-21ksoftirqd/009:40:200
1778899383,3cyclictest121rcu_preempt12:35:120
17788993833,3cyclictest9-21ksoftirqd/009:54:590
1778899382,7cyclictest9-21ksoftirqd/010:05:240
17788993824,3cyclictest9-21ksoftirqd/008:10:220
1778899382,3cyclictest9-21ksoftirqd/012:00:160
1778899382,3cyclictest121rcu_preempt09:15:010
1778899381,3cyclictest9-21ksoftirqd/008:50:120
1778899381,2cyclictest9-21ksoftirqd/007:40:250
1778899380,2cyclictest121rcu_preempt10:33:030
17791993732,3cyclictest17987-21cron10:25:013
17791993730,4cyclictest41-21ksoftirqd/307:50:583
1779099370,25cyclictest0-21swapper/207:15:122
17789993732,3cyclictest25-21ksoftirqd/111:25:211
17789993732,3cyclictest25-21ksoftirqd/111:05:001
17789993732,3cyclictest25-21ksoftirqd/109:45:131
17789993732,3cyclictest25-21ksoftirqd/109:15:181
17789993732,3cyclictest25-21ksoftirqd/109:05:251
17789993732,3cyclictest25-21ksoftirqd/108:35:211
17789993732,3cyclictest25-21ksoftirqd/108:35:211
17789993724,3cyclictest25-21ksoftirqd/108:30:131
17789993723,4cyclictest25-21ksoftirqd/110:50:271
17789993723,4cyclictest25-21ksoftirqd/107:10:181
17789993723,3cyclictest25-21ksoftirqd/112:15:181
17789993723,3cyclictest25-21ksoftirqd/111:20:171
17789993723,3cyclictest25-21ksoftirqd/107:25:131
17789993722,4cyclictest25-21ksoftirqd/110:15:241
1778999370,3cyclictest121rcu_preempt09:30:221
1778899375,2cyclictest121rcu_preempt09:20:160
1778899374,3cyclictest121rcu_preempt10:40:130
1778899374,3cyclictest121rcu_preempt07:35:010
17788993732,3cyclictest9-21ksoftirqd/012:30:000
17788993731,4cyclictest9-21ksoftirqd/012:20:130
1778899371,3cyclictest9-21ksoftirqd/010:20:140
1778899370,3cyclictest121rcu_preempt10:00:120
138491370,1ptp4l0-21swapper/311:42:563
17791993631,3cyclictest22638-21cron08:25:003
17791993630,4cyclictest41-21ksoftirqd/312:01:263
17790993630,4cyclictest33-21ksoftirqd/209:08:382
17790993630,4cyclictest33-21ksoftirqd/208:29:192
17790993629,4cyclictest29926-21cron07:35:012
1779099362,20cyclictest24377-21timerandwakeup07:20:252
1779099360,21cyclictest6196-21cut07:50:182
17789993632,3cyclictest25-21ksoftirqd/108:50:171
17789993622,4cyclictest25-21ksoftirqd/109:30:011
17789993622,3cyclictest25-21ksoftirqd/112:00:301
17789993622,3cyclictest25-21ksoftirqd/111:45:231
17789993622,3cyclictest25-21ksoftirqd/111:30:181
17789993621,4cyclictest25-21ksoftirqd/110:20:131
17789993621,4cyclictest25-21ksoftirqd/107:55:121
17789993621,3cyclictest25-21ksoftirqd/109:50:151
17789993621,3cyclictest25-21ksoftirqd/108:15:131
17789993621,3cyclictest25-21ksoftirqd/108:05:291
17789993620,3cyclictest25-21ksoftirqd/107:50:131
1778899364,3cyclictest121rcu_preempt07:50:120
17788993632,2cyclictest9-21ksoftirqd/009:20:000
17788993632,2cyclictest9-21ksoftirqd/008:05:250
17788993631,3cyclictest9-21ksoftirqd/010:55:010
17788993631,3cyclictest9-21ksoftirqd/009:40:010
17788993631,3cyclictest9-21ksoftirqd/009:40:000
17788993631,3cyclictest9-21ksoftirqd/007:25:000
17788993630,4cyclictest9-21ksoftirqd/007:55:270
1778899361,3cyclictest121rcu_preempt09:55:180
1778899360,3cyclictest121rcu_preempt12:33:420
1778899360,3cyclictest121rcu_preempt08:49:490
138491360,0ptp4l401ktimersoftd/311:20:153
17791993529,4cyclictest41-21ksoftirqd/311:45:453
17791993529,4cyclictest41-21ksoftirqd/310:56:313
17791993529,4cyclictest41-21ksoftirqd/308:49:213
17790993530,3cyclictest33-21ksoftirqd/207:45:002
17790993529,4cyclictest33-21ksoftirqd/212:24:432
17790993529,4cyclictest33-21ksoftirqd/210:50:082
17790993529,4cyclictest33-21ksoftirqd/209:46:372
1779099350,21cyclictest28912-21sed11:50:122
1779099350,18cyclictest10307-21grep11:10:252
17789993530,3cyclictest25-21ksoftirqd/110:15:001
17789993530,3cyclictest25-21ksoftirqd/108:00:251
17789993530,3cyclictest25-21ksoftirqd/107:35:131
17789993530,3cyclictest25-21ksoftirqd/107:35:001
17789993529,4cyclictest25-21ksoftirqd/111:52:371
17789993522,3cyclictest25-21ksoftirqd/112:05:241
17789993519,4cyclictest25-21ksoftirqd/110:05:171
17789993517,3cyclictest25-21ksoftirqd/108:10:161
1778899354,3cyclictest121rcu_preempt11:30:000
17788993531,3cyclictest9-21ksoftirqd/009:00:000
17788993531,2cyclictest9-21ksoftirqd/010:50:010
17788993531,2cyclictest9-21ksoftirqd/010:25:270
17788993530,3cyclictest9-21ksoftirqd/008:35:140
17788993530,3cyclictest9-21ksoftirqd/008:35:140
17788993530,3cyclictest9-21ksoftirqd/007:30:010
17788993530,3cyclictest9-21ksoftirqd/007:15:000
17788993530,2cyclictest9-21ksoftirqd/009:35:000
17788993529,4cyclictest9-21ksoftirqd/008:25:120
17788993529,3cyclictest9-21ksoftirqd/011:40:000
17788993529,3cyclictest9-21ksoftirqd/009:30:000
17788993520,3cyclictest9-21ksoftirqd/008:20:190
1778899350,9cyclictest9-21ksoftirqd/007:35:250
17791993429,3cyclictest41-21ksoftirqd/312:30:113
17791993429,3cyclictest41-21ksoftirqd/307:16:223
17791993428,4cyclictest41-21ksoftirqd/311:16:443
17791993428,4cyclictest41-21ksoftirqd/310:54:073
17791993428,4cyclictest41-21ksoftirqd/310:49:363
17791993428,4cyclictest41-21ksoftirqd/309:49:163
17791993428,4cyclictest41-21ksoftirqd/308:33:533
17791993428,4cyclictest41-21ksoftirqd/308:16:483
17791993428,4cyclictest41-21ksoftirqd/308:10:463
17790993428,4cyclictest33-21ksoftirqd/209:57:322
17790993428,4cyclictest33-21ksoftirqd/209:13:002
17790993428,4cyclictest33-21ksoftirqd/208:21:452
17789993430,3cyclictest25-21ksoftirqd/110:40:131
17789993430,2cyclictest25-21ksoftirqd/112:20:131
17789993421,4cyclictest25-21ksoftirqd/107:45:231
17789993420,4cyclictest25-21ksoftirqd/112:30:251
17789993420,3cyclictest25-21ksoftirqd/110:30:141
17789993420,3cyclictest25-21ksoftirqd/110:00:121
17789993418,4cyclictest25-21ksoftirqd/107:15:131
17789993418,3cyclictest25-21ksoftirqd/112:10:221
1778899343,3cyclictest121rcu_preempt10:35:150
17788993430,3cyclictest9-21ksoftirqd/008:42:420
17788993429,3cyclictest9-21ksoftirqd/011:40:130
17788993428,4cyclictest9-21ksoftirqd/011:46:020
17788993427,4cyclictest9-21ksoftirqd/011:05:060
1778899342,4cyclictest121rcu_preempt11:30:170
1778899342,3cyclictest9-21ksoftirqd/009:05:140
17788993420,3cyclictest9-21ksoftirqd/010:10:200
1778899341,6cyclictest9-21ksoftirqd/012:05:170
1778899341,3cyclictest121rcu_preempt08:02:070
1778899340,5cyclictest9-21ksoftirqd/007:45:230
1778899340,3cyclictest121rcu_preempt09:00:210
138491340,12ptp4l401ktimersoftd/310:05:003
138491340,0ptp4l401ktimersoftd/309:20:153
17791993328,3cyclictest41-21ksoftirqd/312:21:113
17791993328,3cyclictest41-21ksoftirqd/309:53:083
17791993328,3cyclictest41-21ksoftirqd/309:37:423
17791993328,3cyclictest41-21ksoftirqd/309:37:423
17791993328,3cyclictest41-21ksoftirqd/307:31:193
17791993327,4cyclictest41-21ksoftirqd/311:31:293
17791993327,4cyclictest41-21ksoftirqd/310:10:583
17791993327,4cyclictest41-21ksoftirqd/307:24:123
17790993328,3cyclictest33-21ksoftirqd/212:30:112
17790993327,4cyclictest33-21ksoftirqd/210:25:042
17790993327,4cyclictest33-21ksoftirqd/209:39:442
17790993327,4cyclictest33-21ksoftirqd/209:39:432
17790993327,4cyclictest33-21ksoftirqd/209:17:002
17790993326,5cyclictest33-21ksoftirqd/211:48:292
17789993328,3cyclictest25-21ksoftirqd/109:05:011
17789993319,3cyclictest25-21ksoftirqd/109:35:271
17789993319,3cyclictest25-21ksoftirqd/109:35:271
17788993328,3cyclictest9-21ksoftirqd/008:15:140
17788993327,3cyclictest9-21ksoftirqd/011:10:180
1778899331,3cyclictest121rcu_preempt09:45:140
1778899330,3cyclictest121rcu_preempt11:20:190
17791993227,3cyclictest41-21ksoftirqd/312:16:423
17791993227,3cyclictest41-21ksoftirqd/309:02:583
17791993227,3cyclictest41-21ksoftirqd/308:50:383
17791993226,4cyclictest41-21ksoftirqd/312:39:173
17791993226,4cyclictest41-21ksoftirqd/309:43:093
17791993226,4cyclictest41-21ksoftirqd/309:12:243
17791993226,4cyclictest41-21ksoftirqd/307:29:583
17790993227,3cyclictest33-21ksoftirqd/208:31:362
17790993226,4cyclictest33-21ksoftirqd/211:28:352
17790993226,4cyclictest33-21ksoftirqd/207:38:442
17790993214,15cyclictest28950-21grep09:40:152
1779099320,14cyclictest0-21swapper/211:35:152
17791993126,3cyclictest41-21ksoftirqd/312:11:363
17791993126,3cyclictest41-21ksoftirqd/308:55:043
17791993125,4cyclictest41-21ksoftirqd/312:27:003
17791993125,4cyclictest41-21ksoftirqd/311:36:103
17791993125,4cyclictest41-21ksoftirqd/308:43:323
17790993126,3cyclictest33-21ksoftirqd/210:55:282
17790993126,3cyclictest33-21ksoftirqd/210:05:432
17790993125,4cyclictest33-21ksoftirqd/211:02:432
17790993125,4cyclictest33-21ksoftirqd/208:47:292
1779099311,18cyclictest1319-21snmpd09:27:462
1779099310,16cyclictest0-21swapper/208:55:242
17789993126,3cyclictest25-21ksoftirqd/109:58:091
138491310,9ptp4l401ktimersoftd/311:53:073
17791993025,3cyclictest41-21ksoftirqd/308:25:123
17791993024,4cyclictest41-21ksoftirqd/311:02:563
17791993024,4cyclictest41-21ksoftirqd/307:40:463
138491300,0ptp4l401ktimersoftd/312:07:573
17791992924,3cyclictest41-21ksoftirqd/308:37:323
17791992924,3cyclictest41-21ksoftirqd/308:37:313
17791992923,4cyclictest41-21ksoftirqd/310:06:523
17790992924,3cyclictest33-21ksoftirqd/210:00:292
17790992911,15cyclictest13877-21smartctl10:15:162
138491290,0ptp4l401ktimersoftd/308:05:293
17791992821,5cyclictest41-21ksoftirqd/311:27:113
17790992822,4cyclictest33-21ksoftirqd/207:49:042
17790992811,14cyclictest8883-21cat12:15:122
1779099280,2cyclictest121rcu_preempt07:59:042
17791992723,2cyclictest3710-21ps07:45:173
17791992722,3cyclictest41-21ksoftirqd/311:10:123
17791992722,3cyclictest41-21ksoftirqd/310:25:583
1779099272,22cyclictest1029-21cpuspeed_turbos09:50:132
1779099261,23cyclictest8234-21/usr/sbin/munin09:00:212
138491260,0ptp4l401ktimersoftd/310:39:583
1779099258,14cyclictest0-21swapper/209:20:272
1779099240,21cyclictest18228-21df_abs07:10:132
1779099231,19cyclictest3926-21ls12:05:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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