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2026-07-24 - 17:17
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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 376 highest latencies:
System rackdslot4.osadl.org (updated Fri Jul 24, 2026 12:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
55062207172,23sleep30-21swapper/307:06:223
56852202169,22sleep00-21swapper/007:08:420
56302202169,22sleep20-21swapper/207:07:592
55162202169,22sleep10-21swapper/107:06:291
300322650,2sleep20-21swapper/209:00:202
6087996432,7cyclictest33-21ksoftirqd/211:55:002
608899635,11cyclictest23097-21grep10:55:253
6087996332,9cyclictest33-21ksoftirqd/208:40:012
58382630,4sleep15839-21unixbench_singl11:25:281
6087996230,6cyclictest33-21ksoftirqd/211:40:222
6087996230,6cyclictest33-21ksoftirqd/211:40:222
138491620,1ptp4l0-21swapper/312:34:313
608899615,12cyclictest29764-21irqrtprio11:10:183
608899605,10cyclictest23693-21latency_hist09:54:593
608899604,12cyclictest6458-21cat10:25:003
608899604,12cyclictest11183-21cat09:29:593
608899604,11cyclictest24776-21missed_timers07:45:223
6087996027,6cyclictest33-21ksoftirqd/211:30:242
608899595,11cyclictest13542-21sshd09:34:393
608899594,16cyclictest20225-21awk07:35:273
608899594,11cyclictest7098-21df_abs08:15:143
608899594,11cyclictest14645-21cut08:30:143
608899594,10cyclictest27362-21cut10:00:193
6087995925,5cyclictest33-21ksoftirqd/212:00:152
6087995923,4cyclictest33-21ksoftirqd/207:54:112
608899584,11cyclictest7454-21processes07:10:243
608899584,11cyclictest6635-21egrep10:25:133
608899584,11cyclictest29715-21cut07:55:213
608899584,11cyclictest24647-21cut12:05:193
608899584,11cyclictest1360-21expr12:25:133
608899584,11cyclictest10097-21cut08:20:193
608899584,10cyclictest7660-21grep12:35:233
608899584,10cyclictest19226-21df_abs11:55:143
608899583,11cyclictest22403-21missed_timers12:00:233
608899583,10cyclictest8562-21/usr/sbin/munin07:15:213
6087995828,3cyclictest33-21ksoftirqd/209:30:132
6087995825,8cyclictest33-21ksoftirqd/210:05:132
6087995823,4cyclictest33-21ksoftirqd/212:40:002
608899575,11cyclictest24849-21irqrtprio08:50:193
608899574,12cyclictest5118-21cat09:15:233
608899574,12cyclictest4993-21cut11:25:193
608899574,12cyclictest12335-21irqrtprio11:40:183
608899574,12cyclictest12335-21irqrtprio11:40:183
608899574,11cyclictest31537-21df_abs12:20:153
608899574,11cyclictest1753-21cstates08:05:123
608899573,11cyclictest21311-21latency_hist10:55:003
6087995729,7cyclictest33-21ksoftirqd/209:15:152
6087995728,5cyclictest33-21ksoftirqd/211:00:192
6087995727,5cyclictest33-21ksoftirqd/208:15:002
6087995726,9cyclictest33-21ksoftirqd/208:25:242
6087995724,5cyclictest33-21ksoftirqd/207:29:592
6087995723,9cyclictest33-21ksoftirqd/207:45:012
608899565,9cyclictest31289-21sed09:05:003
608899564,12cyclictest18932-21cut08:40:003
608899563,11cyclictest788-21unixbench_multi08:00:263
608899563,11cyclictest4245-21cpuspeed_turbos08:10:143
608899563,11cyclictest16060-21latency_hist09:40:013
608899563,10cyclictest16165-21/usr/sbin/munin07:30:123
6087995628,6cyclictest33-21ksoftirqd/208:45:122
6087995627,9cyclictest33-21ksoftirqd/210:30:232
6087995627,7cyclictest33-21ksoftirqd/211:10:012
6087995626,5cyclictest33-21ksoftirqd/208:10:002
6087995625,4cyclictest33-21ksoftirqd/209:40:232
6087995624,5cyclictest33-21ksoftirqd/210:50:172
6087995624,3cyclictest33-21ksoftirqd/211:55:182
6087995623,4cyclictest33-21ksoftirqd/212:20:002
608899554,18cyclictest2548-21cut11:20:193
608899554,11cyclictest16106-21latency_hist11:50:003
608899554,11cyclictest14956-21sed09:35:213
608899554,10cyclictest3734-21latency_hist09:15:013
608899553,11cyclictest29253-21df_abs10:05:153
608899553,11cyclictest11173-21latency_hist11:40:003
6087995527,5cyclictest33-21ksoftirqd/212:05:252
6087995526,7cyclictest33-21ksoftirqd/210:15:162
608899547,11cyclictest22354-21awk07:40:223
608899544,18cyclictest12590-21cat07:20:273
608899544,11cyclictest28245-21sed11:05:253
608899544,11cyclictest12095-21cut10:35:163
608899543,9cyclictest30103-21cut12:15:223
608899543,10cyclictest15901-21latency_hist07:30:003
6087995425,5cyclictest33-21ksoftirqd/209:14:332
6087995425,3cyclictest33-21ksoftirqd/208:55:212
6087995423,5cyclictest33-21ksoftirqd/209:45:202
6087995422,5cyclictest33-21ksoftirqd/210:00:012
6087995419,4cyclictest33-21ksoftirqd/207:15:272
6087995410,3cyclictest33-21ksoftirqd/207:45:172
608899536,11cyclictest17541-21awk09:40:233
608899534,19cyclictest21396-21cat08:45:003
608899534,16cyclictest3180-21switchtime10:15:243
608899533,10cyclictest17961-21timerandwakeup11:50:253
608899532,10cyclictest0-21swapper/310:15:003
6087995320,5cyclictest33-21ksoftirqd/209:20:162
608899526,19cyclictest24413-21awk09:55:183
608899524,17cyclictest8844-21latency_hist11:35:003
608899524,17cyclictest28757-21date07:55:013
608899522,10cyclictest0-21swapper/308:27:593
608799518,3cyclictest33-21ksoftirqd/211:10:142
608799516,6cyclictest33-21ksoftirqd/208:35:012
608799516,2cyclictest33-21ksoftirqd/208:40:222
6087995121,5cyclictest33-21ksoftirqd/212:25:172
608899504,18cyclictest14093-21apt-config10:40:003
608799509,2cyclictest33-21ksoftirqd/210:40:002
608799506,7cyclictest33-21ksoftirqd/212:35:002
608799502,8cyclictest33-21ksoftirqd/207:20:162
608799496,3cyclictest33-21ksoftirqd/210:40:262
6087994931,10cyclictest33-21ksoftirqd/212:20:152
608899484,17cyclictest23074-21awk08:45:263
608899483,17cyclictest19840-21cat09:45:193
608899481,17cyclictest0-21swapper/311:00:153
6087994838,3cyclictest33-21ksoftirqd/207:59:592
608799482,5cyclictest33-21ksoftirqd/210:55:272
608799482,5cyclictest33-21ksoftirqd/208:10:172
608899474,10cyclictest26594-21cat12:10:153
608799476,7cyclictest33-21ksoftirqd/212:15:002
608799476,3cyclictest33-21ksoftirqd/211:20:012
608799472,6cyclictest33-21ksoftirqd/209:05:242
608799472,6cyclictest33-21ksoftirqd/209:05:242
608799472,5cyclictest33-21ksoftirqd/210:10:262
6086994719,7cyclictest25-21ksoftirqd/109:40:011
6086994719,7cyclictest25-21ksoftirqd/109:40:001
6086994716,4cyclictest25-21ksoftirqd/107:39:591
608899463,8cyclictest32620-21ls11:15:213
608799463,5cyclictest33-21ksoftirqd/207:10:222
6087994623,3cyclictest33-21ksoftirqd/211:45:232
608799461,6cyclictest33-21ksoftirqd/209:25:132
6087994616,8cyclictest33-21ksoftirqd/210:30:002
608799460,7cyclictest0-21swapper/211:35:192
608799456,3cyclictest33-21ksoftirqd/208:50:142
608799455,2cyclictest33-21ksoftirqd/208:00:232
608799454,8cyclictest33-21ksoftirqd/208:25:002
6087994532,4cyclictest33-21ksoftirqd/207:35:282
6087994530,6cyclictest33-21ksoftirqd/211:25:202
6087994519,6cyclictest33-21ksoftirqd/209:35:222
6087994519,6cyclictest33-21ksoftirqd/209:35:222
608799451,8cyclictest33-21ksoftirqd/211:20:152
6086994515,4cyclictest25-21ksoftirqd/110:00:241
608899445,11cyclictest186572sleep310:47:443
6087994432,4cyclictest33-21ksoftirqd/210:00:262
608799441,6cyclictest33-21ksoftirqd/210:20:172
608699448,3cyclictest25-21ksoftirqd/111:20:271
608699444,7cyclictest25-21ksoftirqd/109:10:241
608799432,4cyclictest33-21ksoftirqd/207:35:012
608799430,3cyclictest121rcu_preempt10:45:152
608699438,4cyclictest25-21ksoftirqd/110:25:181
6086994314,3cyclictest25-21ksoftirqd/108:35:271
6086994312,4cyclictest25-21ksoftirqd/111:15:001
6086994310,7cyclictest25-21ksoftirqd/111:35:001
6087994231,4cyclictest33-21ksoftirqd/209:55:002
608699428,3cyclictest25-21ksoftirqd/108:45:231
6086994212,4cyclictest25-21ksoftirqd/110:15:171
6088994135,3cyclictest11252-21sh10:35:003
608699417,6cyclictest25-21ksoftirqd/108:25:231
608699416,6cyclictest25-21ksoftirqd/111:45:211
608699415,2cyclictest121rcu_preempt09:15:241
6086994138,2cyclictest25-21ksoftirqd/108:00:001
6086994137,3cyclictest25-21ksoftirqd/111:40:001
6086994115,3cyclictest25-21ksoftirqd/109:00:171
608699411,36cyclictest23525-21cron12:05:001
6086994112,4cyclictest25-21ksoftirqd/109:25:121
6086994112,4cyclictest25-21ksoftirqd/108:40:271
608699404,3cyclictest121rcu_preempt12:20:221
608699404,3cyclictest121rcu_preempt11:40:161
608699404,3cyclictest121rcu_preempt11:40:161
608699404,2cyclictest121rcu_preempt08:15:221
608699403,2cyclictest121rcu_preempt09:05:241
608699403,2cyclictest121rcu_preempt09:05:241
608699402,4cyclictest25-21ksoftirqd/111:55:171
6086994012,3cyclictest25-21ksoftirqd/107:45:181
6086994011,7cyclictest25-21ksoftirqd/110:10:011
608699395,2cyclictest25-21ksoftirqd/110:10:181
608699395,2cyclictest25-21ksoftirqd/107:25:181
608699394,2cyclictest121rcu_preempt12:35:151
608699394,2cyclictest121rcu_preempt09:40:141
608699393,4cyclictest25-21ksoftirqd/111:50:221
6086993934,3cyclictest25-21ksoftirqd/111:10:001
608699393,3cyclictest25-21ksoftirqd/107:15:201
608699393,3cyclictest121rcu_preempt12:15:151
608699393,2cyclictest121rcu_preempt10:40:191
608699392,5cyclictest25-21ksoftirqd/108:50:271
6086993913,7cyclictest25-21ksoftirqd/110:20:211
608699391,34cyclictest1303-21runrttasks12:08:001
608699388,4cyclictest25-21ksoftirqd/110:50:001
608699388,3cyclictest25-21ksoftirqd/107:20:251
608699385,4cyclictest25-21ksoftirqd/112:10:291
608699385,3cyclictest25-21ksoftirqd/108:05:191
608699384,2cyclictest121rcu_preempt10:55:171
608699383,3cyclictest121rcu_preempt12:30:251
608699383,3cyclictest121rcu_preempt08:30:261
6086993833,3cyclictest25-21ksoftirqd/109:50:011
608699382,7cyclictest25-21ksoftirqd/109:55:151
6086993810,4cyclictest25-21ksoftirqd/107:50:201
6086993810,3cyclictest25-21ksoftirqd/110:50:201
608699375,6cyclictest25-21ksoftirqd/108:20:171
608699374,7cyclictest121rcu_preempt12:25:231
608699374,6cyclictest25-21ksoftirqd/110:30:171
608699374,2cyclictest121rcu_preempt09:20:201
608699373,7cyclictest25-21ksoftirqd/108:10:141
6086993733,3cyclictest25-21ksoftirqd/109:50:131
6086993733,2cyclictest25-21ksoftirqd/107:10:131
608699373,2cyclictest121rcu_preempt08:00:171
6086993732,2cyclictest25-21ksoftirqd/109:30:231
608699372,3cyclictest25-21ksoftirqd/110:35:151
608699372,3cyclictest25-21ksoftirqd/107:40:221
6085993732,3cyclictest23764-21cron08:50:000
608699361,3cyclictest121rcu_preempt08:55:251
6085993631,3cyclictest9-21ksoftirqd/009:09:330
6085993631,3cyclictest9-21ksoftirqd/009:09:330
608699353,3cyclictest121rcu_preempt07:30:291
6086993529,4cyclictest25-21ksoftirqd/111:00:241
6086993529,3cyclictest25-21ksoftirqd/111:15:131
6085993530,3cyclictest9-21ksoftirqd/011:25:010
6085993529,4cyclictest9-21ksoftirqd/009:14:380
6085993529,4cyclictest9-21ksoftirqd/007:28:220
6085993428,4cyclictest9-21ksoftirqd/012:05:390
6085993428,4cyclictest9-21ksoftirqd/011:30:110
6085993428,4cyclictest9-21ksoftirqd/011:13:490
6085993428,4cyclictest9-21ksoftirqd/009:42:130
6085993428,4cyclictest9-21ksoftirqd/008:15:160
6085993327,4cyclictest9-21ksoftirqd/012:31:180
6085993327,4cyclictest9-21ksoftirqd/012:15:500
6085993327,4cyclictest9-21ksoftirqd/012:13:170
6085993327,4cyclictest9-21ksoftirqd/011:15:290
6085993327,4cyclictest9-21ksoftirqd/010:26:140
6085993327,4cyclictest9-21ksoftirqd/010:03:270
6085993327,4cyclictest9-21ksoftirqd/008:36:390
6085993327,4cyclictest9-21ksoftirqd/007:24:040
6088993225,5cyclictest41-21ksoftirqd/308:58:123
6085993227,3cyclictest9-21ksoftirqd/010:09:130
6085993227,3cyclictest9-21ksoftirqd/008:55:190
6085993226,4cyclictest9-21ksoftirqd/012:26:250
6085993226,4cyclictest9-21ksoftirqd/010:32:160
6085993226,4cyclictest9-21ksoftirqd/008:40:040
6085993226,4cyclictest9-21ksoftirqd/008:30:370
6085993226,4cyclictest9-21ksoftirqd/008:14:280
6085993226,4cyclictest9-21ksoftirqd/008:05:420
6085993225,5cyclictest9-21ksoftirqd/010:39:020
608899316,22cyclictest1204-21latency_hist09:10:003
608899314,16cyclictest6444-21/usr/sbin/munin09:20:233
6085993126,3cyclictest9-21ksoftirqd/011:06:540
6085993126,3cyclictest9-21ksoftirqd/010:44:510
6085993126,3cyclictest9-21ksoftirqd/010:24:060
6085993126,3cyclictest9-21ksoftirqd/009:24:480
6085993126,3cyclictest9-21ksoftirqd/008:25:380
6085993126,3cyclictest9-21ksoftirqd/007:19:120
6085993125,4cyclictest9-21ksoftirqd/012:36:120
6085993125,4cyclictest9-21ksoftirqd/009:50:560
6085993124,5cyclictest9-21ksoftirqd/011:40:080
6085993124,5cyclictest9-21ksoftirqd/011:40:080
6085993025,3cyclictest9-21ksoftirqd/011:25:080
6085993025,3cyclictest9-21ksoftirqd/007:47:160
6085993025,3cyclictest9-21ksoftirqd/007:32:080
6085993024,4cyclictest9-21ksoftirqd/010:53:340
6085993024,4cyclictest9-21ksoftirqd/009:30:110
6085993024,4cyclictest9-21ksoftirqd/009:01:020
608599300,2cyclictest121rcu_preempt07:11:550
608899295,10cyclictest803-21users09:05:273
6085992924,3cyclictest9-21ksoftirqd/012:23:250
6085992924,3cyclictest9-21ksoftirqd/009:35:400
6085992924,3cyclictest9-21ksoftirqd/009:35:390
6085992923,4cyclictest9-21ksoftirqd/009:57:300
6085992923,4cyclictest9-21ksoftirqd/009:48:190
6085992923,4cyclictest9-21ksoftirqd/007:55:420
6085992823,3cyclictest9-21ksoftirqd/011:58:530
6085992823,3cyclictest9-21ksoftirqd/008:00:570
6085992822,4cyclictest9-21ksoftirqd/011:53:530
6085992822,4cyclictest9-21ksoftirqd/007:35:490
6085992722,3cyclictest9-21ksoftirqd/010:58:480
6085992721,4cyclictest9-21ksoftirqd/010:48:560
6085992621,3cyclictest9-21ksoftirqd/007:44:140
6085992520,3cyclictest9-21ksoftirqd/007:54:570
6085992519,4cyclictest9-21ksoftirqd/010:11:210
6085992519,4cyclictest9-21ksoftirqd/008:51:420
6085992419,3cyclictest9-21ksoftirqd/012:00:590
6085992419,3cyclictest9-21ksoftirqd/010:18:270
6085992419,3cyclictest9-21ksoftirqd/009:19:460
6085992216,4cyclictest9-21ksoftirqd/011:45:580
6085992116,3cyclictest9-21ksoftirqd/009:29:540
6085992115,4cyclictest9-21ksoftirqd/008:21:370
6085991813,3cyclictest9-21ksoftirqd/011:01:120
6085991712,3cyclictest9510-21grep11:35:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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