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2026-07-10 - 21:43
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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 Fri Jul 10, 2026 12:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
90912207174,21sleep00-21swapper/007:08:200
89802205170,23sleep10-21swapper/107:07:001
88742204172,21sleep20-21swapper/207:05:372
138591204171,22phc2sys0-21swapper/307:07:193
9516996629,4cyclictest41-21ksoftirqd/309:15:003
9516996230,4cyclictest41-21ksoftirqd/309:20:003
9516996121,4cyclictest41-21ksoftirqd/307:15:143
9513996123,4cyclictest9-21ksoftirqd/008:25:250
9516996029,4cyclictest41-21ksoftirqd/310:10:003
9515996016,9cyclictest33-21ksoftirqd/210:15:132
9516995932,4cyclictest41-21ksoftirqd/312:05:273
9516995932,4cyclictest41-21ksoftirqd/311:15:263
9516995928,4cyclictest41-21ksoftirqd/311:55:153
9516995928,4cyclictest41-21ksoftirqd/308:25:153
9515995919,4cyclictest33-21ksoftirqd/212:37:372
951499591,24cyclictest223-21systemd-journal11:55:001
9516995830,4cyclictest41-21ksoftirqd/310:50:193
9516995828,3cyclictest41-21ksoftirqd/307:35:253
9516995826,4cyclictest41-21ksoftirqd/308:05:263
9515995821,6cyclictest33-21ksoftirqd/212:00:012
951699574,2cyclictest121rcu_preempt08:50:003
9516995728,4cyclictest41-21ksoftirqd/311:05:243
9516995634,2cyclictest41-21ksoftirqd/309:54:293
9516995628,5cyclictest41-21ksoftirqd/311:30:123
9516995620,4cyclictest41-21ksoftirqd/309:55:133
9515995619,4cyclictest33-21ksoftirqd/212:15:192
9515995614,6cyclictest33-21ksoftirqd/209:25:172
9515995613,6cyclictest33-21ksoftirqd/210:50:242
951499560,24cyclictest11579-21latency_hist09:25:011
21302560,1sleep30-21swapper/308:00:143
9516995528,4cyclictest41-21ksoftirqd/311:45:253
9516995527,3cyclictest41-21ksoftirqd/307:40:133
9516995527,3cyclictest41-21ksoftirqd/307:40:133
9516995525,4cyclictest41-21ksoftirqd/311:40:013
9516995523,6cyclictest41-21ksoftirqd/307:15:003
9516995522,4cyclictest41-21ksoftirqd/307:55:143
9516995516,10cyclictest41-21ksoftirqd/312:25:193
9515995515,6cyclictest33-21ksoftirqd/212:10:112
9516995436,3cyclictest41-21ksoftirqd/312:15:223
9516995425,7cyclictest41-21ksoftirqd/308:35:163
9516995425,4cyclictest41-21ksoftirqd/310:55:193
9515995422,6cyclictest33-21ksoftirqd/211:50:242
9515995422,5cyclictest33-21ksoftirqd/210:40:122
9515995419,4cyclictest33-21ksoftirqd/211:15:272
951499540,27cyclictest30640-21vmstat12:10:271
287642540,3sleep3951699cyclictest08:53:243
951699535,10cyclictest41-21ksoftirqd/311:20:243
9516995341,4cyclictest41-21ksoftirqd/307:30:003
9516995327,4cyclictest41-21ksoftirqd/308:30:173
9516995327,4cyclictest41-21ksoftirqd/307:45:223
9516995323,9cyclictest41-21ksoftirqd/308:15:193
9516995321,4cyclictest41-21ksoftirqd/309:20:143
9515995328,8cyclictest33-21ksoftirqd/207:35:132
9515995320,4cyclictest33-21ksoftirqd/208:15:002
9515995318,3cyclictest33-21ksoftirqd/208:05:202
9515995317,8cyclictest33-21ksoftirqd/209:40:192
951499534,22cyclictest5092-21netstat12:25:241
951399535,8cyclictest9-21ksoftirqd/008:35:000
9516995236,3cyclictest41-21ksoftirqd/308:20:253
951599523,6cyclictest33-21ksoftirqd/208:45:122
9515995234,9cyclictest33-21ksoftirqd/209:00:002
9515995221,3cyclictest33-21ksoftirqd/208:20:192
9515995214,4cyclictest33-21ksoftirqd/210:35:182
951399525,5cyclictest101ktimersoftd/011:05:140
46022520,2sleep00-21swapper/011:20:160
951699514,9cyclictest7652-21kworker/3:211:40:133
9516995131,10cyclictest41-21ksoftirqd/310:15:013
9516995123,3cyclictest41-21ksoftirqd/310:20:173
9516995122,7cyclictest41-21ksoftirqd/312:10:173
9516995121,20cyclictest41-21ksoftirqd/310:05:003
9516995120,8cyclictest41-21ksoftirqd/307:20:263
951599519,5cyclictest33-21ksoftirqd/208:15:272
951599516,4cyclictest33-21ksoftirqd/212:30:002
9515995131,10cyclictest33-21ksoftirqd/209:45:182
9515995129,4cyclictest33-21ksoftirqd/209:10:282
9515995127,4cyclictest33-21ksoftirqd/210:00:242
9515995123,4cyclictest33-21ksoftirqd/210:10:192
9515995123,3cyclictest33-21ksoftirqd/209:55:122
9515995118,3cyclictest33-21ksoftirqd/211:35:172
9515995112,4cyclictest33-21ksoftirqd/210:25:002
9515995111,5cyclictest33-21ksoftirqd/210:35:012
9515995110,6cyclictest33-21ksoftirqd/211:05:152
951499511,22cyclictest13784-21latency_hist10:35:011
951499510,22cyclictest116872sleep107:14:131
951499510,19cyclictest7104-21diskstats10:20:141
951399516,7cyclictest9-21ksoftirqd/009:05:260
9516995031,3cyclictest41-21ksoftirqd/310:15:183
9516995018,8cyclictest41-21ksoftirqd/311:00:153
951599509,6cyclictest33-21ksoftirqd/208:30:212
951599508,4cyclictest33-21ksoftirqd/210:25:182
951599504,5cyclictest33-21ksoftirqd/209:55:002
9515995027,8cyclictest33-21ksoftirqd/208:40:252
9515995027,8cyclictest33-21ksoftirqd/208:40:252
9515995027,3cyclictest33-21ksoftirqd/208:05:002
951599502,2cyclictest121rcu_preempt11:50:002
9515995015,3cyclictest33-21ksoftirqd/211:20:132
9515995013,3cyclictest33-21ksoftirqd/209:30:162
951499500,25cyclictest2978-21grep12:20:251
951499500,23cyclictest420-21rs:main1
951499500,23cyclictest4181-21date08:05:011
9516994936,3cyclictest41-21ksoftirqd/309:25:233
9516994934,5cyclictest41-21ksoftirqd/310:40:163
9516994933,3cyclictest41-21ksoftirqd/310:45:133
9516994919,6cyclictest41-21ksoftirqd/309:00:223
9516994918,3cyclictest41-21ksoftirqd/312:35:153
9515994929,10cyclictest33-21ksoftirqd/207:35:002
9515994928,9cyclictest33-21ksoftirqd/211:35:012
9515994928,10cyclictest33-21ksoftirqd/209:05:192
9515994924,4cyclictest33-21ksoftirqd/210:55:152
9515994923,5cyclictest33-21ksoftirqd/207:10:132
9515994916,3cyclictest33-21ksoftirqd/212:00:132
9515994911,3cyclictest33-21ksoftirqd/207:45:012
9515994911,3cyclictest33-21ksoftirqd/207:45:012
951399494,11cyclictest9-21ksoftirqd/008:25:010
951699485,3cyclictest41-21ksoftirqd/311:10:173
9516994837,3cyclictest41-21ksoftirqd/309:10:003
951699483,6cyclictest121rcu_preempt08:40:263
951699483,6cyclictest121rcu_preempt08:40:253
9516994832,4cyclictest41-21ksoftirqd/309:50:003
951699482,8cyclictest121rcu_preempt08:10:153
9516994812,6cyclictest41-21ksoftirqd/311:50:123
951599489,8cyclictest33-21ksoftirqd/212:25:002
9515994836,2cyclictest33-21ksoftirqd/207:45:252
9515994827,8cyclictest33-21ksoftirqd/210:45:242
9515994814,3cyclictest33-21ksoftirqd/207:55:002
951499480,23cyclictest10874-21awk10:25:261
951399486,4cyclictest9-21ksoftirqd/008:35:280
951399485,8cyclictest9-21ksoftirqd/007:40:270
951399485,8cyclictest9-21ksoftirqd/007:40:260
951399485,7cyclictest9-21ksoftirqd/011:10:120
951399485,7cyclictest9-21ksoftirqd/010:05:140
951399483,5cyclictest101ktimersoftd/007:15:130
951699475,3cyclictest41-21ksoftirqd/307:30:243
9516994734,3cyclictest41-21ksoftirqd/309:00:003
9516994733,4cyclictest41-21ksoftirqd/312:00:153
951699472,9cyclictest41-21ksoftirqd/312:35:013
9516994722,10cyclictest41-21ksoftirqd/307:50:133
9516994712,7cyclictest41-21ksoftirqd/310:35:163
951599479,4cyclictest33-21ksoftirqd/209:25:002
951599477,6cyclictest33-21ksoftirqd/211:40:152
951599475,4cyclictest33-21ksoftirqd/212:05:252
951599473,8cyclictest33-21ksoftirqd/211:25:132
9515994731,4cyclictest33-21ksoftirqd/207:55:142
9515994727,8cyclictest33-21ksoftirqd/208:50:182
9515994725,7cyclictest33-21ksoftirqd/211:10:182
9515994711,3cyclictest33-21ksoftirqd/207:25:162
951499470,22cyclictest9697-21cut11:30:181
951399475,8cyclictest9-21ksoftirqd/008:50:000
951399473,6cyclictest9-21ksoftirqd/010:48:430
951399471,6cyclictest101ktimersoftd/010:20:130
951399470,6cyclictest101ktimersoftd/009:30:120
951399470,44cyclictest101ktimersoftd/010:35:120
9516994635,3cyclictest41-21ksoftirqd/310:25:133
9516994628,5cyclictest41-21ksoftirqd/309:35:163
951599469,5cyclictest33-21ksoftirqd/207:20:122
951599465,4cyclictest33-21ksoftirqd/212:30:212
9515994626,4cyclictest33-21ksoftirqd/208:25:212
9515994626,10cyclictest33-21ksoftirqd/211:00:122
951499461,22cyclictest24017-21df_abs12:00:141
951499460,23cyclictest6644-21cat08:10:011
951499460,23cyclictest30134-21cut08:55:201
951499460,23cyclictest12134-21cut11:35:181
951399465,8cyclictest21680-21cstates09:45:120
951399464,8cyclictest9-21ksoftirqd/007:25:190
951399462,6cyclictest9-21ksoftirqd/009:35:190
951399462,5cyclictest9-21ksoftirqd/010:19:580
951399460,6cyclictest101ktimersoftd/008:40:130
951399460,6cyclictest101ktimersoftd/008:40:130
9516994530,4cyclictest41-21ksoftirqd/311:25:243
9516994528,4cyclictest41-21ksoftirqd/309:30:153
951599454,2cyclictest121rcu_preempt09:20:002
951599453,2cyclictest121rcu_preempt08:35:162
951599452,2cyclictest121rcu_preempt07:15:142
951499451,22cyclictest14991-21cut10:35:181
951499450,30cyclictest16542-21egrep10:40:121
951399456,8cyclictest9-21ksoftirqd/007:10:230
951399454,6cyclictest0-21swapper/007:50:140
951399453,6cyclictest9-21ksoftirqd/007:45:160
951399452,7cyclictest9-21ksoftirqd/008:10:280
951399452,6cyclictest9-21ksoftirqd/007:20:180
951399452,6cyclictest101ktimersoftd/009:10:150
951399452,5cyclictest9-21ksoftirqd/012:20:180
951399452,5cyclictest9-21ksoftirqd/010:40:260
951399451,6cyclictest9-21ksoftirqd/011:58:390
951399451,6cyclictest9-21ksoftirqd/011:00:150
951399450,2cyclictest121rcu_preempt09:20:140
951699444,7cyclictest41-21ksoftirqd/312:25:003
951699443,3cyclictest121rcu_preempt09:40:143
9516994428,4cyclictest41-21ksoftirqd/310:30:183
951599444,2cyclictest121rcu_preempt09:35:162
9515994428,8cyclictest33-21ksoftirqd/209:00:002
9515994428,5cyclictest33-21ksoftirqd/210:05:152
951499441,23cyclictest31639-21df_abs12:15:141
9514994410,22cyclictest7928-21switchtime11:25:241
951499440,21cyclictest9431-21df_inode12:35:141
951399444,6cyclictest9-21ksoftirqd/011:49:470
951399444,4cyclictest6412-21cpu11:25:120
951399443,6cyclictest9-21ksoftirqd/011:17:420
951399442,8cyclictest9-21ksoftirqd/011:50:130
951399442,6cyclictest9-21ksoftirqd/008:55:140
951399442,6cyclictest9-21ksoftirqd/007:57:550
951399441,6cyclictest9-21ksoftirqd/010:12:270
951399441,6cyclictest9-21ksoftirqd/009:04:510
951399441,6cyclictest9-21ksoftirqd/008:54:230
951399441,5cyclictest9-21ksoftirqd/010:59:060
951399441,5cyclictest9-21ksoftirqd/008:15:340
951399440,8cyclictest9-21ksoftirqd/011:35:110
951499433,20cyclictest0-21swapper/110:53:131
951499430,24cyclictest27962-21ls12:05:261
951499430,24cyclictest12317-21df08:20:161
951499430,23cyclictest17485-21cut09:35:191
951499430,23cyclictest15634-21sed07:20:221
951499430,22cyclictest30594-21cat11:05:251
951399432,6cyclictest9-21ksoftirqd/010:25:120
951399431,6cyclictest9-21ksoftirqd/007:30:030
951399431,4cyclictest9-21ksoftirqd/007:39:200
951399430,6cyclictest101ktimersoftd/008:00:120
951499421,23cyclictest9302-21apt-config08:15:011
951499421,21cyclictest21623-21latency_hist08:40:001
951499420,23cyclictest30014-21irqrtprio07:50:181
951499420,23cyclictest27658-21cut07:45:201
951499420,22cyclictest6483-21latency_hist09:15:001
951399424,8cyclictest9-21ksoftirqd/010:00:210
951399423,7cyclictest9-21ksoftirqd/009:50:130
951399420,6cyclictest26556-21cut09:55:120
951399420,5cyclictest101ktimersoftd/012:00:130
951499410,22cyclictest28014-21cat11:00:241
951499410,22cyclictest26030-21awk08:45:281
951499410,21cyclictest514-21cat11:10:241
951399413,7cyclictest9-21ksoftirqd/011:45:000
951399411,5cyclictest9-21ksoftirqd/009:42:510
951399411,4cyclictest101ktimersoftd/012:30:250
951399411,3cyclictest9-21ksoftirqd/009:27:340
951499402,19cyclictest1389-21apt-get11:15:121
951399405,7cyclictest9-21ksoftirqd/010:32:500
951399401,6cyclictest9-21ksoftirqd/010:50:130
951399400,4cyclictest0-21swapper/011:30:120
951499392,18cyclictest24315-21apt-get07:40:121
951499392,18cyclictest24315-21apt-get07:40:121
951499392,18cyclictest21841-21apt-get07:35:121
951499391,27cyclictest14819-21iostat09:30:171
951499391,21cyclictest25770-21users09:50:281
951499390,29cyclictest28337-21cat08:50:261
951499390,24cyclictest1704-21cat08:00:001
951499390,22cyclictest14451-21cpu08:25:141
951499390,21cyclictest6502-21/usr/sbin/munin12:30:201
951499390,19cyclictest2184-21ps10:10:191
951399394,4cyclictest9-21ksoftirqd/008:09:550
951399392,5cyclictest101ktimersoftd/012:05:260
951499381,27cyclictest3717-21apt-get10:15:031
951499381,27cyclictest2517-21iostat_ios09:05:181
951499381,26cyclictest31844-21diskstats10:05:141
951499381,19cyclictest26977-21hddtemp_smartct09:55:161
951499381,19cyclictest20046-21meminfo10:45:201
951499381,18cyclictest29499-21perl10:00:141
951499381,18cyclictest22063-21hddtemp_smartct09:45:151
951499380,23cyclictest13461-21grep07:15:251
951499380,22cyclictest18452-21latency_hist11:50:001
951399386,8cyclictest9-21ksoftirqd/009:15:270
951399380,6cyclictest101ktimersoftd/012:25:230
9514993730,4cyclictest25-21ksoftirqd/109:26:241
951499370,22cyclictest18430-21mailstats07:25:271
951499370,21cyclictest22164-21df_abs08:40:151
951499370,21cyclictest22164-21df_abs08:40:151
951499370,19cyclictest21720-21perl11:55:161
951499360,25cyclictest7513-21iostat_ios08:10:201
951499360,21cyclictest19439-21df_abs09:40:141
951499360,19cyclictest25687-21users10:55:291
951499340,19cyclictest19969-21smartctl07:30:191
951399343,7cyclictest9-21ksoftirqd/012:35:130
9513993429,3cyclictest9-21ksoftirqd/012:17:450
9513993427,4cyclictest9-21ksoftirqd/012:12:240
9514993327,4cyclictest25-21ksoftirqd/109:03:331
9514993226,4cyclictest25-21ksoftirqd/108:32:281
9514993024,4cyclictest25-21ksoftirqd/111:41:471
9514992911,15cyclictest9097-21date09:20:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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