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2026-07-22 - 17:23
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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 Jul 22, 2026 12:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
117652204170,23sleep10-21swapper/107:06:441
138591202169,22phc2sys0-21swapper/307:06:463
117142199166,22sleep20-21swapper/207:06:032
117022195161,23sleep00-21swapper/007:05:530
3269721720,6sleep21232199cyclictest08:55:162
2361021690,8sleep11232099cyclictest07:30:181
614621610,2sleep01231999cyclictest11:15:220
1385918764,12phc2sys0-21swapper/307:10:013
12321996428,4cyclictest33-21ksoftirqd/207:15:202
12320996411,13cyclictest5113-21cut10:10:121
12322996327,4cyclictest41-21ksoftirqd/307:35:193
12321996331,8cyclictest33-21ksoftirqd/212:35:162
12320996312,12cyclictest204822chrt11:45:151
12321996230,5cyclictest33-21ksoftirqd/209:15:152
12321996128,4cyclictest33-21ksoftirqd/208:25:202
12321996126,4cyclictest33-21ksoftirqd/210:15:132
12322996029,7cyclictest41-21ksoftirqd/311:40:003
12322996026,10cyclictest41-21ksoftirqd/308:05:013
12322996021,4cyclictest41-21ksoftirqd/312:00:193
12321996026,4cyclictest33-21ksoftirqd/207:55:282
12320996012,11cyclictest21739-21/usr/sbin/munin09:35:271
1231999605,7cyclictest27339-21ls07:40:000
229392590,4sleep01231999cyclictest10:45:170
12322995929,4cyclictest41-21ksoftirqd/310:05:013
12322995923,4cyclictest41-21ksoftirqd/311:00:273
12322995922,10cyclictest41-21ksoftirqd/310:35:143
12322995919,7cyclictest41-21ksoftirqd/310:55:003
12321995931,4cyclictest33-21ksoftirqd/210:20:172
12321995929,4cyclictest33-21ksoftirqd/212:30:002
12321995928,8cyclictest33-21ksoftirqd/207:50:212
12321995927,5cyclictest33-21ksoftirqd/211:05:002
12320995910,11cyclictest22336-21chrt07:29:371
12322995828,4cyclictest41-21ksoftirqd/310:35:013
12322995828,4cyclictest41-21ksoftirqd/310:35:003
12322995824,4cyclictest41-21ksoftirqd/311:50:233
12322995823,4cyclictest41-21ksoftirqd/312:15:243
12322995823,4cyclictest41-21ksoftirqd/312:15:243
12322995822,7cyclictest41-21ksoftirqd/311:45:133
12321995827,6cyclictest33-21ksoftirqd/211:20:162
12321995827,6cyclictest33-21ksoftirqd/211:05:172
12320995810,11cyclictest16158-21/usr/sbin/munin11:35:221
12322995733,6cyclictest41-21ksoftirqd/311:15:143
12322995729,4cyclictest41-21ksoftirqd/308:15:253
12322995727,4cyclictest41-21ksoftirqd/307:15:273
12322995726,4cyclictest41-21ksoftirqd/309:30:203
12322995724,5cyclictest41-21ksoftirqd/309:20:003
12322995723,7cyclictest41-21ksoftirqd/311:40:123
12322995723,10cyclictest41-21ksoftirqd/308:29:593
12322995720,5cyclictest41-21ksoftirqd/309:20:163
12321995723,6cyclictest33-21ksoftirqd/212:00:142
12322995628,4cyclictest41-21ksoftirqd/311:25:143
12322995627,4cyclictest41-21ksoftirqd/310:25:263
12322995627,4cyclictest41-21ksoftirqd/309:35:143
12322995626,4cyclictest41-21ksoftirqd/312:25:133
12322995626,4cyclictest41-21ksoftirqd/311:10:193
12322995626,4cyclictest41-21ksoftirqd/310:05:133
12322995624,3cyclictest41-21ksoftirqd/310:15:243
12322995620,4cyclictest41-21ksoftirqd/311:20:213
12322995620,14cyclictest41-21ksoftirqd/312:20:153
12322995619,8cyclictest41-21ksoftirqd/310:55:163
12322995619,4cyclictest41-21ksoftirqd/310:40:143
12321995627,6cyclictest33-21ksoftirqd/210:00:142
12321995624,6cyclictest33-21ksoftirqd/207:25:142
12321995621,5cyclictest33-21ksoftirqd/209:55:242
12322995527,4cyclictest41-21ksoftirqd/310:10:103
12322995527,4cyclictest41-21ksoftirqd/309:50:103
12322995525,4cyclictest41-21ksoftirqd/308:10:193
12322995524,4cyclictest41-21ksoftirqd/309:45:143
12322995524,4cyclictest41-21ksoftirqd/308:50:213
12322995523,5cyclictest41-21ksoftirqd/309:10:113
12322995523,4cyclictest41-21ksoftirqd/310:20:233
12322995523,4cyclictest41-21ksoftirqd/307:25:233
12322995522,5cyclictest41-21ksoftirqd/309:00:003
12322995520,4cyclictest41-21ksoftirqd/307:20:223
12322995519,4cyclictest41-21ksoftirqd/312:05:163
12322995518,5cyclictest41-21ksoftirqd/308:35:293
12322995518,4cyclictest41-21ksoftirqd/308:40:243
12322995517,8cyclictest41-21ksoftirqd/312:10:133
12321995523,5cyclictest33-21ksoftirqd/208:35:142
12321995517,9cyclictest33-21ksoftirqd/211:35:112
1232099558,10cyclictest12157-21latency_hist12:35:011
138491540,1ptp4l401ktimersoftd/307:58:463
12322995429,4cyclictest41-21ksoftirqd/308:45:173
12322995419,4cyclictest41-21ksoftirqd/307:30:213
12322995418,4cyclictest41-21ksoftirqd/309:05:293
12321995417,5cyclictest33-21ksoftirqd/209:05:242
12320995411,12cyclictest18706-21awk11:40:211
12320995410,9cyclictest31758-21chrt11:03:351
12320995410,11cyclictest2692-21df_inode11:10:141
1231999544,5cyclictest4466-21ls11:15:000
1231999543,7cyclictest27005-21sed10:55:000
97752530,4sleep233-21ksoftirqd/208:07:252
12322995319,6cyclictest41-21ksoftirqd/309:25:173
12322995317,10cyclictest41-21ksoftirqd/312:35:133
12322995316,5cyclictest41-21ksoftirqd/312:30:223
1232199539,6cyclictest33-21ksoftirqd/210:55:262
12321995327,5cyclictest33-21ksoftirqd/212:30:222
12321995310,5cyclictest33-21ksoftirqd/208:10:262
1232099539,9cyclictest13328-21meminfo12:35:191
12320995311,11cyclictest16834-21seq10:32:261
12320995311,11cyclictest16834-21seq10:32:251
12320995310,10cyclictest17247-21seq09:29:231
12319995312,5cyclictest9-21ksoftirqd/008:40:000
262712520,3sleep10-21swapper/108:40:231
12322995227,7cyclictest41-21ksoftirqd/309:55:163
12322995225,3cyclictest41-21ksoftirqd/308:20:143
12322995220,4cyclictest41-21ksoftirqd/311:30:253
12322995220,4cyclictest41-21ksoftirqd/309:00:213
12321995219,5cyclictest33-21ksoftirqd/207:45:252
1232099528,11cyclictest30409-21fschecks_time09:55:171
1231999523,7cyclictest12879-21grep07:10:140
170862510,4sleep2311rcuc/210:35:002
170862510,4sleep2311rcuc/210:35:002
12322995130,3cyclictest41-21ksoftirqd/311:05:253
1232199517,6cyclictest33-21ksoftirqd/209:30:002
12321995130,18cyclictest33-21ksoftirqd/212:08:232
12321995120,6cyclictest33-21ksoftirqd/211:15:162
12320995111,10cyclictest24406-21chrt09:41:311
12322995014,4cyclictest41-21ksoftirqd/309:40:183
12321995032,4cyclictest33-21ksoftirqd/208:05:002
12321995029,10cyclictest33-21ksoftirqd/208:40:182
12321995022,6cyclictest33-21ksoftirqd/208:45:142
12321995021,5cyclictest33-21ksoftirqd/209:42:222
12321995014,4cyclictest33-21ksoftirqd/207:23:202
12321995010,5cyclictest33-21ksoftirqd/210:35:192
12320995012,9cyclictest14609-21seq09:22:051
12320995012,11cyclictest24551-21chrt08:37:381
12320995010,11cyclictest9357-21chrt10:16:211
12322994917,4cyclictest41-21ksoftirqd/307:40:153
1232199495,2cyclictest33-21ksoftirqd/210:10:212
12321994934,4cyclictest33-21ksoftirqd/207:44:592
12321994930,3cyclictest33-21ksoftirqd/212:10:232
1232199492,2cyclictest121rcu_preempt08:20:002
12321994919,5cyclictest33-21ksoftirqd/209:10:102
12321994917,4cyclictest33-21ksoftirqd/211:55:242
12321994910,3cyclictest33-21ksoftirqd/210:40:282
1232099499,9cyclictest21770-21taskset10:42:291
1232099499,8cyclictest31796-21taskset12:07:261
12320994910,10cyclictest1732-21chrt12:10:511
12322994822,4cyclictest41-21ksoftirqd/308:05:173
1232199485,6cyclictest33-21ksoftirqd/211:45:242
12321994816,6cyclictest33-21ksoftirqd/209:00:232
12321994812,6cyclictest33-21ksoftirqd/207:10:262
1232199480,2cyclictest121rcu_preempt10:45:222
1232099488,8cyclictest4524-21taskset12:19:211
1232099488,8cyclictest4524-21taskset12:19:211
12322994734,3cyclictest41-21ksoftirqd/307:45:163
12322994713,8cyclictest41-21ksoftirqd/310:45:133
1232199474,7cyclictest33-21ksoftirqd/211:25:272
12321994730,5cyclictest33-21ksoftirqd/210:25:132
12321994728,4cyclictest33-21ksoftirqd/211:10:272
12321994727,6cyclictest33-21ksoftirqd/212:20:132
12321994719,5cyclictest33-21ksoftirqd/212:17:532
12321994719,5cyclictest33-21ksoftirqd/212:17:532
1232099479,8cyclictest19822-21chrt08:29:501
1232099479,11cyclictest19856-21sed07:25:001
1232099478,8cyclictest4509-21chrt10:07:111
12320994710,11cyclictest14320-21chrt11:32:401
1231999476,4cyclictest9-21ksoftirqd/007:55:490
1231999474,7cyclictest7201-21latency_hist10:15:000
12319994714,5cyclictest9-21ksoftirqd/008:40:180
12322994633,4cyclictest41-21ksoftirqd/307:50:253
12322994615,7cyclictest41-21ksoftirqd/311:55:163
1232199466,5cyclictest33-21ksoftirqd/210:05:192
1232199466,2cyclictest33-21ksoftirqd/209:50:142
1232199466,2cyclictest121rcu_preempt08:20:252
1232199463,5cyclictest33-21ksoftirqd/210:50:132
1232199463,5cyclictest33-21ksoftirqd/207:35:002
12321994632,5cyclictest33-21ksoftirqd/211:40:032
12321994630,4cyclictest33-21ksoftirqd/211:50:202
12321994628,9cyclictest33-21ksoftirqd/208:50:242
1232199461,6cyclictest33-21ksoftirqd/209:30:242
12320994611,10cyclictest6964-21taskset09:06:381
1231999467,5cyclictest9-21ksoftirqd/009:00:180
1231999465,6cyclictest18111-21cut10:35:180
12319994630,8cyclictest9-21ksoftirqd/007:30:010
1232199456,5cyclictest33-21ksoftirqd/211:30:152
1232199452,2cyclictest121rcu_preempt08:30:182
1231999456,6cyclictest30722-21cut09:55:190
1231999454,7cyclictest17273-21cat11:40:000
1231999454,5cyclictest101ktimersoftd/012:25:130
1231999452,6cyclictest24207-21ssh07:30:250
12319994519,8cyclictest9-21ksoftirqd/008:58:260
1231999450,5cyclictest101ktimersoftd/012:30:180
1231999450,10cyclictest29721-21date08:50:000
1232199441,2cyclictest121rcu_preempt09:35:262
1232199440,2cyclictest121rcu_preempt09:20:252
1232099449,8cyclictest24157-21chrt10:46:381
1232099449,19cyclictest26672-21awk07:35:271
1232099449,10cyclictest26423-21awk10:50:271
12319994423,8cyclictest9-21ksoftirqd/010:05:270
1232299433,8cyclictest41-21ksoftirqd/308:30:143
1232199431,2cyclictest121rcu_preempt07:35:262
1232199430,2cyclictest121rcu_preempt09:45:262
1231999438,5cyclictest9-21ksoftirqd/008:10:150
1231999436,6cyclictest9-21ksoftirqd/009:25:290
12320994211,8cyclictest13450-21memory07:10:201
1231999423,6cyclictest32552-21sed11:05:140
12319994225,8cyclictest9-21ksoftirqd/011:50:000
12319994213,9cyclictest9-21ksoftirqd/011:56:220
12319994212,5cyclictest9-21ksoftirqd/010:00:260
12319994210,5cyclictest9-21ksoftirqd/007:50:130
1232099419,14cyclictest28723-21timedrift10:55:281
12320994111,11cyclictest1709-21chrt11:07:161
1231999414,4cyclictest9-21ksoftirqd/012:35:560
12319994137,2cyclictest111rcuc/009:10:230
1231999413,6cyclictest101ktimersoftd/012:10:170
1231999411,6cyclictest101ktimersoftd/012:20:150
12319994037,2cyclictest111rcuc/007:21:460
1231999403,6cyclictest101ktimersoftd/010:20:220
12319994036,2cyclictest111rcuc/007:47:520
1231999402,6cyclictest27708-21tune2fs10:55:180
12319994025,8cyclictest9-21ksoftirqd/012:00:270
12319994012,5cyclictest9-21ksoftirqd/009:47:230
1232099398,11cyclictest16326-21missed_timers08:20:211
1232099398,10cyclictest0-21swapper/111:50:211
12320993911,12cyclictest9257-21taskset11:20:461
12319993935,2cyclictest111rcuc/008:25:080
1232099386,9cyclictest0-21swapper/112:00:281
12320993831,4cyclictest25-21ksoftirqd/108:07:491
12320993811,12cyclictest14843-21chrt08:19:151
12320993811,11cyclictest11812-21chrt10:21:031
12319993835,2cyclictest111rcuc/009:50:290
1231999382,7cyclictest9-21ksoftirqd/011:33:270
12319993813,3cyclictest9-21ksoftirqd/008:53:360
1232099377,10cyclictest18130-21hddtemp_smartct09:30:181
12320993711,10cyclictest6846-21unixbench_multi08:00:291
12320993710,12cyclictest19172-21taskset10:35:551
12320993710,10cyclictest32080-21taskset08:53:391
1231999376,6cyclictest9-21ksoftirqd/009:35:190
1231999374,5cyclictest9-21ksoftirqd/009:41:010
1231999372,5cyclictest101ktimersoftd/011:40:180
12319993715,3cyclictest9-21ksoftirqd/008:17:050
1232099369,7cyclictest11734-21sensors_temp08:10:251
1232099368,8cyclictest8766-21mailstats12:25:241
1232099368,11cyclictest9558-21runrttasks09:10:411
1232099368,10cyclictest12221-21runrttasks09:18:111
12320993630,4cyclictest25-21ksoftirqd/111:57:271
12320993611,10cyclictest12014-21taskset11:29:341
12320993610,10cyclictest14261-21taskset10:25:521
1231999364,5cyclictest9-21ksoftirqd/010:30:190
1231999364,5cyclictest9-21ksoftirqd/010:30:190
12319993632,2cyclictest111rcuc/011:25:050
1231999361,6cyclictest9849-21latency_hist10:20:010
1231999361,6cyclictest21461-21timerwakeupswit10:40:280
12319993616,4cyclictest9-21ksoftirqd/012:09:200
1231999361,5cyclictest9-21ksoftirqd/011:00:200
1231999361,2cyclictest121rcu_preempt09:30:250
1232099359,11cyclictest29739-21taskset07:44:481
1232099358,15cyclictest27473-21apt-get08:45:121
1232099357,17cyclictest0-21swapper/109:45:121
12320993510,8cyclictest27970-21hddtemp_smartct09:50:151
12320993510,11cyclictest6775-21chrt11:15:431
12320993510,11cyclictest4664-21chrt09:03:321
1231999355,4cyclictest9-21ksoftirqd/007:15:130
12319993532,2cyclictest111rcuc/012:15:140
12319993532,2cyclictest111rcuc/012:15:140
12319993531,2cyclictest9-21ksoftirqd/008:00:140
12319993531,2cyclictest111rcuc/009:24:510
1231999352,5cyclictest9-21ksoftirqd/008:30:170
1231999351,5cyclictest9-21ksoftirqd/009:15:430
1232099349,14cyclictest1849-21ls07:50:271
1232099349,10cyclictest221252sleep108:32:551
1232099348,14cyclictest30011-21apt-get07:45:121
12319993429,3cyclictest9-21ksoftirqd/009:05:190
12319993429,3cyclictest9-21ksoftirqd/008:23:260
12319993410,6cyclictest9-21ksoftirqd/010:25:130
1232099339,8cyclictest15798-21irqstats07:15:191
1232099338,11cyclictest0-21swapper/110:03:511
12319993329,2cyclictest9-21ksoftirqd/008:05:230
12319993328,3cyclictest9-21ksoftirqd/011:20:120
1231999332,1cyclictest121rcu_preempt11:50:200
1232099329,8cyclictest3635-21irqstats07:55:221
12319993229,2cyclictest111rcuc/007:40:220
12320993126,3cyclictest25-21ksoftirqd/108:59:301
12320992823,3cyclictest25-21ksoftirqd/112:22:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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