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2026-05-30 - 18:58
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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 Sat May 30, 2026 12:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
146142220155,22sleep10-21swapper/107:06:541
146162206171,23sleep30-21swapper/307:06:563
148072202168,22sleep00-21swapper/007:09:260
145122202169,22sleep20-21swapper/207:05:342
1534499679,16cyclictest23439-21/usr/sbin/munin07:25:161
15344996710,16cyclictest27926-21grep10:50:131
1534499669,16cyclictest531-21awk12:05:011
1534499669,16cyclictest12176-21cat10:15:251
1534499649,17cyclictest17467-21awk12:35:241
1534499649,15cyclictest26953-21cat10:45:231
1534499649,15cyclictest23639-21irqrtprio08:30:181
1534499639,16cyclictest7025-21expr11:10:231
15345996220,5cyclictest33-21ksoftirqd/211:30:192
1534499619,16cyclictest10234-21taskset11:19:041
1534499618,11cyclictest28018-21apt-config09:45:011
1534499618,11cyclictest20619-21cstates09:30:131
15344996110,10cyclictest22180-21phc2sys11:40:221
1534399610,3cyclictest5352-21latency_hist11:10:000
1534499609,16cyclictest5387-21/usr/sbin/munin07:55:181
1534499608,13cyclictest2315-21gnome-shell12:28:591
1534399605,22cyclictest2429-21taskset08:52:490
1534399601,30cyclictest0-21swapper/009:27:160
1534399601,29cyclictest0-21swapper/010:52:130
1534399600,3cyclictest22229-21seq07:21:120
1534399600,3cyclictest19724-21seq07:15:500
1534399595,22cyclictest4896-21taskset07:51:440
1534399591,3cyclictest17553-21seq08:17:490
1534399591,29cyclictest0-21swapper/012:38:040
1534399591,29cyclictest0-21swapper/010:04:310
1534399591,28cyclictest0-21swapper/010:47:280
1534399591,22cyclictest0-21swapper/012:17:180
1534399591,22cyclictest0-21swapper/011:24:310
1534399590,3cyclictest9973-21seq11:15:490
1534399590,3cyclictest30125-21seq11:55:440
1534399590,3cyclictest27398-21seq09:41:000
1534399590,3cyclictest24808-21taskset10:40:270
1534399590,3cyclictest22313-21seq09:31:470
1534499588,15cyclictest25572-21latency_hist11:50:001
1534399582,28cyclictest0-21swapper/011:04:480
1534399581,3cyclictest0-21swapper/008:40:350
1534399581,2cyclictest0-21swapper/009:57:530
1534399581,2cyclictest0-21swapper/009:52:360
1534399581,2cyclictest0-21swapper/007:39:450
1534399581,24cyclictest20118-21seq08:23:590
1534399580,3cyclictest5460-21seq12:14:260
1534399580,3cyclictest20497-21seq11:38:240
1534399580,3cyclictest20497-21seq11:38:240
1534399580,3cyclictest14849-21seq09:15:530
108452580,2sleep30-21swapper/308:05:163
15345995717,7cyclictest33-21ksoftirqd/210:00:182
1534399576,31cyclictest22425-21taskset10:36:320
1534399571,2cyclictest0-21swapper/009:39:150
1534399571,2cyclictest0-21swapper/007:12:570
1534399570,3cyclictest32346-21taskset08:48:110
1534399570,3cyclictest15569-21seq12:34:190
1534399570,3cyclictest10492-21seq09:10:080
15345995618,4cyclictest33-21ksoftirqd/211:50:192
1534499569,8cyclictest30868-21hddtemp_smartct08:45:161
1534499568,16cyclictest16746-21taskset09:20:231
1534399561,3cyclictest32230-21taskset07:40:280
1534399561,2cyclictest0-21swapper/010:15:420
1534399560,3cyclictest32585-21seq12:00:330
1534399560,3cyclictest2552-21seq07:48:120
1534699556,8cyclictest41-21ksoftirqd/310:25:213
1534699554,9cyclictest41-21ksoftirqd/309:15:233
15345995515,5cyclictest33-21ksoftirqd/209:51:282
1534499559,8cyclictest18720-21iostat_ios08:20:181
1534499559,8cyclictest1425-21irqstats07:45:191
1534499559,16cyclictest23398-21hddtemp_smartct09:35:181
1534499557,7cyclictest7537-21ls12:15:251
1534399554,28cyclictest0-21swapper/011:50:410
1534399551,3cyclictest0-21swapper/011:14:040
1534399551,2cyclictest0-21swapper/009:05:500
15345995413,7cyclictest33-21ksoftirqd/210:40:142
1534499549,9cyclictest20954-21diskstats10:35:161
1534499549,8cyclictest15241-21users12:30:261
1534499549,7cyclictest13878-21hddtemp_smartct11:25:201
1534499548,7cyclictest2922-21apt-get11:05:121
1534399543,27cyclictest0-21swapper/010:26:460
1534399540,3cyclictest17890-21taskset11:34:090
1534499539,8cyclictest903-21hddtemp_smartct08:50:171
1534499539,8cyclictest4784-21users07:50:301
1534499539,8cyclictest4166-21memory08:55:201
1534499539,8cyclictest25713-21cstates09:40:131
1534499539,7cyclictest4299-21irqstats12:10:181
1534499539,7cyclictest18460-21df_abs10:30:121
1534499539,6cyclictest28553-21iostat_ios08:40:171
1534499539,17cyclictest9660-21systemctl10:10:251
1534499538,7cyclictest20902-21df_inode08:25:141
1534499538,7cyclictest13304-21diskstats08:10:151
1534499537,14cyclictest27902-21apt-get07:35:101
44912520,1sleep30-21swapper/308:55:233
1534699527,6cyclictest41-21ksoftirqd/310:45:133
1534699524,11cyclictest41-21ksoftirqd/311:25:273
15345995213,5cyclictest33-21ksoftirqd/210:22:502
1534499529,9cyclictest9036-21memory08:00:221
1534499529,8cyclictest1223-21df_inode12:05:131
1534499529,7cyclictest25817-21df07:30:141
1534499529,7cyclictest16623-21memory08:15:191
1534499529,6cyclictest6671-21irqstats10:05:201
1534499529,17cyclictest1123-21diskstats09:55:151
1534499529,14cyclictest18361-21df_inode09:25:141
1534499528,7cyclictest9794-21python12:20:251
1534499528,7cyclictest4682-21sendmail_mailtr10:00:221
1534499528,7cyclictest13579-21df_inode10:20:161
1534499528,7cyclictest1109-21iostat_ios11:00:181
166672510,3sleep216672-21irqrtprio12:35:182
1534699515,9cyclictest41-21ksoftirqd/309:35:233
1534699515,9cyclictest41-21ksoftirqd/308:20:003
15346995113,3cyclictest41-21ksoftirqd/311:05:143
15346995112,6cyclictest41-21ksoftirqd/307:55:193
15345995120,5cyclictest33-21ksoftirqd/210:15:162
15345995115,6cyclictest33-21ksoftirqd/211:10:012
15345995113,5cyclictest33-21ksoftirqd/211:03:202
15345995112,4cyclictest33-21ksoftirqd/207:25:302
1534499519,7cyclictest23420-21df_inode10:40:131
1534499519,7cyclictest11087-21perl09:10:171
1534499519,12cyclictest11491-21meminfo08:05:221
1534499518,7cyclictest28974-21iostat11:55:171
1534499518,7cyclictest16683-21meminfo10:25:191
1534499517,7cyclictest17129-21ps11:30:231
1534699505,8cyclictest41-21ksoftirqd/312:15:213
1534699504,9cyclictest41-21ksoftirqd/310:15:163
15346995047,2cyclictest391rcuc/308:10:143
15346995012,6cyclictest41-21ksoftirqd/309:20:273
15346995012,3cyclictest41-21ksoftirqd/312:02:583
15345995013,5cyclictest33-21ksoftirqd/212:11:132
1534499508,8cyclictest8516-21diskstats09:05:151
1534499508,7cyclictest14065-21meminfo09:15:211
1534699499,5cyclictest41-21ksoftirqd/308:29:503
1534699493,9cyclictest41-21ksoftirqd/307:15:223
15346994912,6cyclictest41-21ksoftirqd/309:40:263
15346994911,5cyclictest41-21ksoftirqd/309:00:253
15345994922,5cyclictest33-21ksoftirqd/207:55:172
15345994910,5cyclictest33-21ksoftirqd/212:28:202
1534499498,9cyclictest26078-21iostat08:35:181
1534399490,3cyclictest5117-21seq08:58:040
94242480,2sleep20-21swapper/208:00:262
1534699488,5cyclictest41-21ksoftirqd/309:47:533
1534699488,5cyclictest41-21ksoftirqd/307:27:153
1534699487,6cyclictest41-21ksoftirqd/312:35:133
15346994814,5cyclictest41-21ksoftirqd/307:45:013
15346994810,5cyclictest41-21ksoftirqd/311:01:033
15345994811,5cyclictest33-21ksoftirqd/211:55:202
1534499488,7cyclictest31728-21meminfo09:50:201
1534499488,6cyclictest6944-21ptp4l-jitter09:00:221
1534699474,7cyclictest41-21ksoftirqd/307:30:183
15345994730,5cyclictest33-21ksoftirqd/211:40:132
15345994719,4cyclictest33-21ksoftirqd/209:05:152
15345994718,6cyclictest33-21ksoftirqd/207:35:162
1534499477,6cyclictest11678-21meminfo11:20:181
1534699468,6cyclictest41-21ksoftirqd/310:50:043
1534699467,5cyclictest41-21ksoftirqd/309:54:463
1534699467,5cyclictest41-21ksoftirqd/309:25:023
1534699462,8cyclictest41-21ksoftirqd/310:20:173
1534699461,9cyclictest41-21ksoftirqd/311:50:213
138491460,36ptp4l0-21swapper/307:10:013
1534699458,5cyclictest41-21ksoftirqd/309:10:023
1534699457,4cyclictest41-21ksoftirqd/310:40:243
1534699453,7cyclictest41-21ksoftirqd/311:40:143
15346994513,3cyclictest41-21ksoftirqd/312:29:583
1534599458,5cyclictest33-21ksoftirqd/210:50:232
15345994510,2cyclictest33-21ksoftirqd/208:07:572
1534499458,7cyclictest18216-21df07:15:141
1534399453,30cyclictest27407-21seq07:31:520
303812440,2sleep30-21swapper/310:55:143
1534699449,5cyclictest41-21ksoftirqd/311:24:333
15346994410,8cyclictest41-21ksoftirqd/311:45:193
15345994441,2cyclictest311rcuc/209:25:042
15345994419,7cyclictest33-21ksoftirqd/209:35:162
1534399440,4cyclictest12433-21seq08:07:570
1534399440,3cyclictest22352-21seq08:26:070
1534699437,3cyclictest41-21ksoftirqd/307:50:133
1534699433,6cyclictest41-21ksoftirqd/311:30:103
15345994319,6cyclictest33-21ksoftirqd/209:30:152
1534599430,6cyclictest321ktimersoftd/211:25:112
1534599430,5cyclictest321ktimersoftd/210:45:132
15343994311,21cyclictest1303-21runrttasks10:31:050
1534399430,3cyclictest14724-21seq08:10:510
1534699426,5cyclictest41-21ksoftirqd/310:31:223
1534699425,5cyclictest41-21ksoftirqd/309:30:253
1534699424,9cyclictest21821-21ps10:35:243
1534699423,2cyclictest121rcu_preempt09:05:133
15346994212,5cyclictest41-21ksoftirqd/311:35:003
15346994212,5cyclictest41-21ksoftirqd/311:35:003
1534699420,7cyclictest401ktimersoftd/308:50:233
15345994221,6cyclictest33-21ksoftirqd/209:15:132
15345994217,6cyclictest33-21ksoftirqd/212:21:162
1534599420,6cyclictest33-21ksoftirqd/212:30:182
1534599420,5cyclictest33-21ksoftirqd/211:45:242
1534399420,3cyclictest27282-21seq08:36:260
1534399420,3cyclictest24936-21seq08:32:480
138491420,0ptp4l401ktimersoftd/312:13:213
138491420,0ptp4l401ktimersoftd/310:09:303
1534599416,6cyclictest33-21ksoftirqd/211:05:172
15345994138,2cyclictest311rcuc/207:17:512
15345994120,7cyclictest33-21ksoftirqd/207:30:272
15345994112,6cyclictest33-21ksoftirqd/209:40:142
1534499417,12cyclictest0-21swapper/111:35:121
1534499417,12cyclictest0-21swapper/111:35:121
1534399410,3cyclictest5655-21taskset10:05:060
1534699404,5cyclictest41-21ksoftirqd/311:55:223
15346994024,2cyclictest41-21ksoftirqd/307:20:573
1534699401,9cyclictest2397-21ls09:55:263
15346994010,5cyclictest41-21ksoftirqd/311:15:253
15345994037,2cyclictest311rcuc/209:57:532
15345994037,2cyclictest311rcuc/207:12:572
1534399401,2cyclictest14989-21sshd10:20:450
1534399401,24cyclictest0-21swapper/007:58:220
1534399401,23cyclictest0-21swapper/011:49:450
1534399401,23cyclictest0-21swapper/010:57:260
1534399401,22cyclictest0-21swapper/012:22:190
1534399401,22cyclictest0-21swapper/009:47:210
1534399400,2cyclictest22829-21taskset11:41:320
1534399400,22cyclictest0-21swapper/011:27:540
1534699397,2cyclictest41-21ksoftirqd/308:00:123
1534699395,5cyclictest41-21ksoftirqd/310:00:223
1534699395,5cyclictest41-21ksoftirqd/308:20:113
1534699394,9cyclictest24075-21ls08:30:213
1534599395,7cyclictest33-21ksoftirqd/207:45:212
1534599395,5cyclictest33-21ksoftirqd/210:10:262
1534399396,24cyclictest1303-21runrttasks07:25:210
1534399391,22cyclictest0-21swapper/012:08:470
1534699389,2cyclictest41-21ksoftirqd/307:45:273
1534699384,5cyclictest41-21ksoftirqd/312:05:233
1534699383,6cyclictest41-21ksoftirqd/310:10:193
15346993826,10cyclictest41-21ksoftirqd/312:20:143
1534599384,3cyclictest33-21ksoftirqd/208:16:302
15345993810,6cyclictest33-21ksoftirqd/208:50:242
1534699375,6cyclictest41-21ksoftirqd/308:40:173
1534699373,4cyclictest14993-21ls12:30:243
1534599377,5cyclictest33-21ksoftirqd/210:30:112
1534599375,3cyclictest33-21ksoftirqd/210:05:202
1534599375,3cyclictest33-21ksoftirqd/208:10:242
1534599374,5cyclictest33-21ksoftirqd/209:10:182
15345993731,4cyclictest33-21ksoftirqd/209:50:012
1534599372,6cyclictest33-21ksoftirqd/207:50:272
15345993721,4cyclictest33-21ksoftirqd/211:37:212
15345993721,4cyclictest33-21ksoftirqd/211:37:212
15345993716,6cyclictest33-21ksoftirqd/209:20:162
15346993632,3cyclictest41-21ksoftirqd/308:35:133
15346993631,3cyclictest391rcuc/307:36:093
15345993633,2cyclictest311rcuc/208:27:362
15345993631,3cyclictest33-21ksoftirqd/211:18:092
1534599362,2cyclictest121rcu_preempt10:25:112
1534599361,6cyclictest33-21ksoftirqd/212:02:442
15346993531,3cyclictest41-21ksoftirqd/311:10:153
15346993530,3cyclictest41-21ksoftirqd/308:45:113
1534599353,5cyclictest33-21ksoftirqd/211:24:502
1534599353,2cyclictest121rcu_preempt10:55:122
15345993519,9cyclictest33-21ksoftirqd/207:20:252
1534499359,10cyclictest26853-21cat11:50:201
1534499357,17cyclictest0-21swapper/107:25:011
1534499356,16cyclictest0-21swapper/107:10:031
1534499355,17cyclictest0-21swapper/110:55:131
15345993429,3cyclictest33-21ksoftirqd/207:40:392
1534599342,8cyclictest33-21ksoftirqd/208:55:162
1534599342,3cyclictest33-21ksoftirqd/208:30:102
15345993414,5cyclictest33-21ksoftirqd/210:40:002
15344993428,4cyclictest25-21ksoftirqd/107:40:151
1534599338,3cyclictest33-21ksoftirqd/208:40:322
1534599334,2cyclictest33-21ksoftirqd/209:00:112
1534599332,5cyclictest33-21ksoftirqd/208:47:472
1534599332,4cyclictest33-21ksoftirqd/208:21:332
1534599330,5cyclictest0-21swapper/212:19:112
15343993327,4cyclictest9-21ksoftirqd/009:03:300
15343993327,4cyclictest9-21ksoftirqd/008:03:290
1534599320,4cyclictest0-21swapper/212:06:402
1534399322,24cyclictest8186-21apt-get10:10:120
1534399320,18cyclictest17114-21ls09:20:280
15343993125,4cyclictest9-21ksoftirqd/012:28:410
15345992923,4cyclictest33-21ksoftirqd/208:36:492
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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