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2026-07-23 - 17:57
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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 rackdslot4.osadl.org (updated Thu Jul 23, 2026 12:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591230162,23phc2sys0-21swapper/307:08:103
19662201167,22sleep20-21swapper/207:05:492
21472199165,23sleep10-21swapper/107:08:081
21162197165,22sleep00-21swapper/007:07:430
264299730,31cyclictest7332-21latency_hist08:25:013
264299680,22cyclictest635-21cut12:30:163
264299680,20cyclictest13428-21cut10:45:183
264299670,23cyclictest5528-21awk11:35:183
264299670,22cyclictest8055-21perl09:30:163
264299670,22cyclictest29565-21latency_hist11:20:013
264299661,22cyclictest10547-21sed07:25:143
264299661,22cyclictest10547-21sed07:25:143
264299660,23cyclictest31383-21timerandwakeup09:10:263
264299651,21cyclictest22367-21cstates12:10:153
264299650,23cyclictest17989-21cut10:55:153
264299640,29cyclictest20683-21cat12:05:203
264299640,26cyclictest11837-21grep08:30:273
264299640,24cyclictest16530-21sed10:50:243
264299640,21cyclictest14847-21date08:40:003
264299631,23cyclictest30932-21missed_timers11:20:213
264299630,21cyclictest3573-21uname09:20:183
264299630,21cyclictest3573-21uname09:20:183
2641996330,4cyclictest33-21ksoftirqd/208:30:152
2639996328,6cyclictest9-21ksoftirqd/008:35:140
264299621,22cyclictest18798-21taskset07:40:193
264299620,22cyclictest24773-21date09:00:013
2641996231,10cyclictest33-21ksoftirqd/210:30:222
2641996227,7cyclictest33-21ksoftirqd/210:20:012
2639996231,4cyclictest9-21ksoftirqd/009:05:010
2639996231,4cyclictest9-21ksoftirqd/007:20:000
264299611,26cyclictest18863-21ps09:50:233
264299610,27cyclictest28735-21chrt08:00:213
264299610,22cyclictest25481-21idleruntime09:00:173
2641996127,11cyclictest33-21ksoftirqd/209:30:142
264299600,26cyclictest18615-21grep08:45:203
2639996030,5cyclictest9-21ksoftirqd/008:45:260
2639996028,4cyclictest9-21ksoftirqd/011:04:590
2639996024,6cyclictest9-21ksoftirqd/011:15:150
113822600,2sleep30-21swapper/310:40:243
264299591,32cyclictest26178-21awk12:15:253
2639995931,3cyclictest9-21ksoftirqd/012:15:130
2639995925,7cyclictest9-21ksoftirqd/008:20:120
2639995924,7cyclictest9-21ksoftirqd/009:05:150
2639995923,7cyclictest9-21ksoftirqd/012:30:120
2639995923,6cyclictest9-21ksoftirqd/011:10:130
2639995921,5cyclictest9-21ksoftirqd/007:35:000
2639995920,8cyclictest9-21ksoftirqd/010:50:130
264299581,22cyclictest1842-21chrt10:20:463
264299580,23cyclictest7325-21acpi11:40:123
2641995831,7cyclictest33-21ksoftirqd/208:50:012
2641995827,5cyclictest33-21ksoftirqd/209:40:252
2641995825,6cyclictest33-21ksoftirqd/211:04:592
2641995825,4cyclictest33-21ksoftirqd/211:40:142
2639995830,3cyclictest9-21ksoftirqd/012:00:160
2639995827,6cyclictest9-21ksoftirqd/007:35:020
2639995824,6cyclictest9-21ksoftirqd/010:30:120
2639995823,6cyclictest9-21ksoftirqd/007:40:140
2639995821,6cyclictest9-21ksoftirqd/008:00:000
2639995818,7cyclictest9-21ksoftirqd/010:25:140
264299571,19cyclictest25415-21fschecks_time11:10:153
264299570,23cyclictest5158-21dpkg10:30:113
264299570,20cyclictest20101-21cpuspeed_turbos09:55:113
264299570,19cyclictest21248-21ps08:50:233
2641995729,4cyclictest33-21ksoftirqd/207:55:242
2641995727,4cyclictest33-21ksoftirqd/207:20:172
2641995724,9cyclictest33-21ksoftirqd/210:10:272
2641995721,10cyclictest33-21ksoftirqd/211:35:122
2639995731,5cyclictest9-21ksoftirqd/008:10:270
2639995728,7cyclictest9-21ksoftirqd/008:05:000
2639995728,3cyclictest9-21ksoftirqd/009:50:250
2639995724,6cyclictest9-21ksoftirqd/011:34:590
2639995724,6cyclictest9-21ksoftirqd/010:20:160
2639995722,6cyclictest9-21ksoftirqd/008:25:160
2639995722,6cyclictest9-21ksoftirqd/008:05:130
2639995720,4cyclictest9-21ksoftirqd/009:20:190
2639995720,4cyclictest9-21ksoftirqd/009:20:190
264299561,22cyclictest20646-21iostat_ios11:00:183
2641995630,10cyclictest33-21ksoftirqd/209:55:172
2641995627,10cyclictest33-21ksoftirqd/208:55:232
2641995625,9cyclictest33-21ksoftirqd/211:57:252
2641995624,8cyclictest33-21ksoftirqd/210:25:182
2641995624,10cyclictest33-21ksoftirqd/212:20:252
2639995627,8cyclictest9-21ksoftirqd/011:05:240
2639995627,4cyclictest9-21ksoftirqd/009:35:220
2639995627,4cyclictest9-21ksoftirqd/007:10:150
2639995624,5cyclictest9-21ksoftirqd/007:45:150
2639995622,5cyclictest9-21ksoftirqd/007:50:140
2639995618,6cyclictest9-21ksoftirqd/009:25:180
2639995618,5cyclictest9-21ksoftirqd/008:40:270
264299550,22cyclictest11923-21chrt11:49:083
2641995524,4cyclictest33-21ksoftirqd/211:15:132
2641995521,5cyclictest33-21ksoftirqd/207:50:242
2639995530,6cyclictest9-21ksoftirqd/011:50:220
2639995525,5cyclictest9-21ksoftirqd/011:45:010
2639995521,3cyclictest9-21ksoftirqd/011:20:170
2639995521,3cyclictest9-21ksoftirqd/010:00:160
2639995520,3cyclictest9-21ksoftirqd/011:45:220
2639995520,3cyclictest9-21ksoftirqd/010:15:190
2639995518,5cyclictest9-21ksoftirqd/012:20:130
2639995518,5cyclictest9-21ksoftirqd/012:05:150
2639995518,5cyclictest9-21ksoftirqd/008:30:130
2641995426,6cyclictest33-21ksoftirqd/210:00:262
2641995421,3cyclictest33-21ksoftirqd/209:10:212
2639995428,8cyclictest9-21ksoftirqd/007:20:260
2639995422,6cyclictest9-21ksoftirqd/010:40:280
2639995421,6cyclictest9-21ksoftirqd/007:25:130
2639995421,6cyclictest9-21ksoftirqd/007:25:130
2639995419,3cyclictest9-21ksoftirqd/009:30:260
2639995418,5cyclictest9-21ksoftirqd/010:55:230
2639995418,4cyclictest9-21ksoftirqd/011:35:200
2639995417,6cyclictest9-21ksoftirqd/009:15:250
2639995417,5cyclictest9-21ksoftirqd/012:25:210
2639995417,5cyclictest9-21ksoftirqd/011:55:270
2639995417,5cyclictest9-21ksoftirqd/010:05:140
2639995416,6cyclictest9-21ksoftirqd/011:25:230
264299530,28cyclictest17074-21runrttasks08:43:593
264299530,27cyclictest5114-21/usr/sbin/munin07:15:133
264299530,20cyclictest12561-21dpkg07:30:113
264199539,3cyclictest33-21ksoftirqd/210:50:272
264199537,6cyclictest33-21ksoftirqd/207:45:252
2641995340,2cyclictest33-21ksoftirqd/210:35:182
2641995324,4cyclictest33-21ksoftirqd/207:25:242
2641995324,4cyclictest33-21ksoftirqd/207:25:242
2641995321,9cyclictest33-21ksoftirqd/208:10:192
2641995320,5cyclictest33-21ksoftirqd/209:30:012
2641995317,9cyclictest33-21ksoftirqd/209:05:332
2639995322,7cyclictest9-21ksoftirqd/009:45:150
2639995319,6cyclictest9-21ksoftirqd/009:55:250
2639995319,5cyclictest9-21ksoftirqd/009:00:010
2639995318,6cyclictest9-21ksoftirqd/012:10:150
2639995316,3cyclictest9-21ksoftirqd/009:10:190
264299520,17cyclictest14630-21apt-get09:45:013
264199521,6cyclictest14723-21apt08:40:002
2639995218,6cyclictest9-21ksoftirqd/012:35:140
264299510,21cyclictest30527-21uname12:25:173
264299510,19cyclictest13570-21ps11:50:233
264199517,3cyclictest33-21ksoftirqd/207:30:232
264199516,6cyclictest33-21ksoftirqd/208:50:272
2641995132,9cyclictest33-21ksoftirqd/209:15:262
2641995120,9cyclictest33-21ksoftirqd/207:40:012
2641995110,3cyclictest33-21ksoftirqd/211:05:192
2639995124,4cyclictest9-21ksoftirqd/010:45:190
2639995118,7cyclictest9-21ksoftirqd/008:55:010
2639995117,6cyclictest9-21ksoftirqd/010:10:240
2639995117,5cyclictest9-21ksoftirqd/009:40:130
264299500,23cyclictest16402-21ls07:35:223
264199506,3cyclictest33-21ksoftirqd/210:25:012
264199504,8cyclictest33-21ksoftirqd/210:45:202
2641995023,9cyclictest33-21ksoftirqd/211:10:262
264199497,2cyclictest33-21ksoftirqd/211:45:182
264199494,9cyclictest33-21ksoftirqd/211:25:242
264199494,6cyclictest33-21ksoftirqd/211:50:262
264299480,26cyclictest1703-21awk08:10:253
264199486,8cyclictest33-21ksoftirqd/208:25:192
264199486,6cyclictest33-21ksoftirqd/209:50:132
264199484,6cyclictest33-21ksoftirqd/209:20:252
264199484,6cyclictest33-21ksoftirqd/209:20:252
264199484,5cyclictest33-21ksoftirqd/209:45:202
264199483,6cyclictest33-21ksoftirqd/208:05:252
263999487,3cyclictest9-21ksoftirqd/010:35:260
2639994817,6cyclictest9-21ksoftirqd/008:15:130
264199474,9cyclictest33-21ksoftirqd/210:55:182
2641994737,4cyclictest33-21ksoftirqd/208:25:012
2641994717,7cyclictest33-21ksoftirqd/209:35:142
2641994716,5cyclictest33-21ksoftirqd/208:00:212
264199470,6cyclictest33-21ksoftirqd/210:40:132
264199465,9cyclictest33-21ksoftirqd/212:00:192
264199465,3cyclictest33-21ksoftirqd/209:00:272
264199463,6cyclictest33-21ksoftirqd/207:15:172
264199462,9cyclictest33-21ksoftirqd/212:40:012
264199462,9cyclictest33-21ksoftirqd/208:15:192
2641994615,5cyclictest33-21ksoftirqd/208:40:252
264199461,4cyclictest33-21ksoftirqd/212:15:242
2641994534,4cyclictest33-21ksoftirqd/212:30:172
264199452,7cyclictest33-21ksoftirqd/207:40:262
264199451,7cyclictest33-21ksoftirqd/212:25:132
264199451,6cyclictest33-21ksoftirqd/212:05:172
2641994434,3cyclictest33-21ksoftirqd/212:15:012
264199441,5cyclictest33-21ksoftirqd/211:25:002
264299430,24cyclictest0-21swapper/307:20:263
264299430,16cyclictest0-21swapper/310:00:263
264199430,9cyclictest33-21ksoftirqd/207:10:192
264199430,4cyclictest33-21ksoftirqd/210:05:182
138491430,0ptp4l401ktimersoftd/309:27:523
138491430,0ptp4l401ktimersoftd/308:15:183
264299407,23cyclictest27275-21cat10:10:003
264299400,23cyclictest28219-21missed_timers12:20:213
264199400,4cyclictest33-21ksoftirqd/211:35:002
138491400,0ptp4l401ktimersoftd/311:55:183
264299390,29cyclictest9985-21cpu09:35:133
264299390,23cyclictest14694-21latency_hist09:45:013
264299381,22cyclictest30634-21grep08:05:163
264299380,24cyclictest29578-21cat09:10:003
264299380,22cyclictest19525-21cat12:04:593
264299380,22cyclictest1872-21users09:15:283
2640993832,3cyclictest25-21ksoftirqd/112:29:591
2642993730,4cyclictest41-21ksoftirqd/312:37:243
264299370,34cyclictest9814-21cron10:40:003
264299370,23cyclictest3665-21irqstats07:10:183
264299370,23cyclictest24699-21cat11:10:003
264299370,22cyclictest27448-21latency_hist08:00:003
2640993731,4cyclictest25-21ksoftirqd/109:43:411
2640993731,4cyclictest25-21ksoftirqd/108:38:261
2640993730,5cyclictest25-21ksoftirqd/108:54:021
264299360,17cyclictest0-21swapper/311:30:153
264099366,29cyclictest0-21swapper/107:49:431
2640993630,4cyclictest25-21ksoftirqd/111:17:451
2640993630,4cyclictest25-21ksoftirqd/110:27:581
2640993630,4cyclictest25-21ksoftirqd/107:50:121
2642993528,4cyclictest41-21ksoftirqd/310:14:483
264299350,22cyclictest31487-21timerandwakeup10:15:263
2640993529,4cyclictest25-21ksoftirqd/111:41:081
2640993529,4cyclictest25-21ksoftirqd/111:27:281
2640993529,4cyclictest25-21ksoftirqd/111:23:021
2640993529,4cyclictest25-21ksoftirqd/110:32:521
2640993529,4cyclictest25-21ksoftirqd/109:23:271
2640993529,4cyclictest25-21ksoftirqd/109:23:261
2640993529,4cyclictest25-21ksoftirqd/108:46:481
264299340,18cyclictest0-21swapper/310:25:023
264099349,23cyclictest0-21swapper/109:19:031
264099348,24cyclictest0-21swapper/110:14:431
2640993428,4cyclictest25-21ksoftirqd/112:15:541
2640993428,4cyclictest25-21ksoftirqd/111:46:361
2640993428,4cyclictest25-21ksoftirqd/110:04:391
2640993428,4cyclictest25-21ksoftirqd/109:46:491
2640993428,4cyclictest25-21ksoftirqd/109:10:431
2640993428,4cyclictest25-21ksoftirqd/108:25:381
2640993427,5cyclictest25-21ksoftirqd/111:14:401
2640993427,5cyclictest25-21ksoftirqd/108:31:161
264099341,2cyclictest121rcu_preempt10:40:371
264299330,18cyclictest0-21swapper/307:45:183
264099333,2cyclictest121rcu_preempt08:01:581
2640993329,3cyclictest25-21ksoftirqd/111:51:251
2640993328,3cyclictest25-21ksoftirqd/110:15:281
2640993328,3cyclictest25-21ksoftirqd/107:30:101
2640993327,4cyclictest25-21ksoftirqd/111:56:441
2640993327,4cyclictest25-21ksoftirqd/110:56:391
2640993327,4cyclictest25-21ksoftirqd/110:45:421
2640993327,4cyclictest25-21ksoftirqd/109:53:561
2640993327,4cyclictest25-21ksoftirqd/109:27:361
2640993327,4cyclictest25-21ksoftirqd/108:10:021
2640993327,4cyclictest25-21ksoftirqd/107:20:551
2640993227,3cyclictest25-21ksoftirqd/107:10:391
2640993226,4cyclictest25-21ksoftirqd/112:24:081
2640993226,4cyclictest25-21ksoftirqd/107:59:471
2640993226,3cyclictest25-21ksoftirqd/112:38:581
2640993210,3cyclictest25332-21cat10:05:111
2640993126,3cyclictest25-21ksoftirqd/111:34:501
2640993126,3cyclictest25-21ksoftirqd/109:06:411
2640993125,4cyclictest25-21ksoftirqd/109:56:411
2640993125,4cyclictest25-21ksoftirqd/109:39:321
2640993125,4cyclictest25-21ksoftirqd/109:04:461
2640993124,5cyclictest25-21ksoftirqd/108:15:121
2640993112,4cyclictest7372-21sed08:25:011
2640993110,3cyclictest9899-21sed09:35:011
264299300,27cyclictest2265-21cat11:30:003
2640993024,4cyclictest25-21ksoftirqd/112:12:331
2640993024,4cyclictest25-21ksoftirqd/111:39:191
2640993024,4cyclictest25-21ksoftirqd/108:58:561
2640993024,4cyclictest25-21ksoftirqd/107:36:481
264099301,27cyclictest0-21swapper/110:50:321
2642992923,3cyclictest41-21ksoftirqd/307:51:053
264299290,26cyclictest9782-21apt08:30:003
264099298,3cyclictest168242chrt08:40:431
2640992925,3cyclictest25-21ksoftirqd/111:00:271
2640992923,4cyclictest25-21ksoftirqd/112:31:491
2640992923,4cyclictest25-21ksoftirqd/111:06:331
2640992923,4cyclictest25-21ksoftirqd/107:16:501
2640992912,3cyclictest18897-21cat12:00:271
264099288,4cyclictest12305-21cron07:30:001
264099288,4cyclictest12305-21cron07:30:001
2640992823,3cyclictest25-21ksoftirqd/110:35:321
2640992810,4cyclictest18068-21df07:40:131
2640992721,3cyclictest25-21ksoftirqd/112:09:011
2640992610,3cyclictest32573-21cstates10:20:131
2640992318,3cyclictest25-21ksoftirqd/108:08:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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