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2026-07-23 - 07:24
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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 Thu Jul 23, 2026 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
51442205171,23sleep10-21swapper/119:07:391
50192202168,22sleep00-21swapper/019:06:030
51452201168,22sleep20-21swapper/219:07:412
50222201166,23sleep30-21swapper/319:06:053
2643621430,4sleep1562599cyclictest19:50:191
1385918464,11phc2sys0-21swapper/319:10:013
1385918464,11phc2sys0-21swapper/319:10:013
89502800,2sleep10-21swapper/122:39:051
5624996813,12cyclictest4778-21cut23:35:160
5624996510,15cyclictest10639-21cpu19:20:120
5624996314,11cyclictest17937-21/usr/sbin/munin19:35:200
5624996311,17cyclictest25408-21/usr/sbin/munin00:20:150
5624996311,17cyclictest25408-21/usr/sbin/munin00:20:150
5624996212,11cyclictest1187-21taskset23:25:490
5624996210,18cyclictest27925-21dpkg21:00:110
5624996114,8cyclictest17403-21/usr/sbin/munin22:55:180
5624996112,11cyclictest13557-21cat21:35:180
5625996021,7cyclictest25-21ksoftirqd/119:45:181
5624996014,11cyclictest20517-21/usr/sbin/munin19:40:130
5624996013,10cyclictest4317-21ps22:20:230
5624996011,11cyclictest21962-21/usr/sbin/munin20:45:210
11072600,7sleep0562499cyclictest22:15:170
5625995923,9cyclictest25-21ksoftirqd/119:25:001
5624995912,11cyclictest29205-21/usr/sbin/munin19:55:250
5624995911,11cyclictest29274-21/usr/sbin/munin23:20:130
5625995826,11cyclictest25-21ksoftirqd/122:10:141
5624995813,10cyclictest5769-21/usr/sbin/munin22:25:130
5624995812,10cyclictest4694-21/usr/sbin/munin20:10:260
5624995811,10cyclictest31170-21cut00:30:210
562499579,11cyclictest24208-21ps19:45:240
562499579,10cyclictest8435-21latency_hist22:35:000
5624995712,10cyclictest22203-21/usr/sbin/munin23:05:160
5624995710,11cyclictest3697-21/usr/sbin/munin21:15:180
562499568,10cyclictest27346-21apt-config00:25:010
5624995612,9cyclictest16146-21/usr/sbin/munin19:30:160
5624995612,10cyclictest8616-21/usr/sbin/munin20:20:130
5624995612,10cyclictest31757-21/usr/sbin/munin22:10:240
5624995612,10cyclictest18615-21/usr/sbin/munin21:45:160
5624995611,16cyclictest12206-21sed21:30:300
5624995611,16cyclictest12206-21sed21:30:290
5624995611,12cyclictest31450-21sed21:05:250
5624995611,11cyclictest10411-21/usr/sbin/munin23:45:220
138491560,1ptp4l401ktimersoftd/300:15:143
562499559,12cyclictest13152-21grep23:50:240
562499559,11cyclictest223-21systemd-journal22:35:060
5624995513,17cyclictest26073-21taskset23:12:250
5624995512,8cyclictest18076-21/usr/sbin/munin20:40:110
562599546,9cyclictest25-21ksoftirqd/119:35:191
562599546,9cyclictest25-21ksoftirqd/100:20:001
5625995424,8cyclictest25-21ksoftirqd/122:00:141
5624995412,9cyclictest15973-21/usr/sbin/munin20:35:150
5624995412,10cyclictest8673-21/usr/sbin/munin21:25:190
5624995411,10cyclictest3463-21/usr/sbin/munin23:30:270
5624995410,10cyclictest7526-21cut23:40:200
5624995410,10cyclictest7526-21cut23:40:200
156772540,2sleep00-21swapper/023:55:260
138491540,0ptp4l401ktimersoftd/319:23:373
562599535,8cyclictest25-21ksoftirqd/121:50:011
562599534,9cyclictest25-21ksoftirqd/122:55:011
562599534,8cyclictest25-21ksoftirqd/120:10:241
562599534,8cyclictest17686-21apt-config21:45:011
562599532,8cyclictest25-21ksoftirqd/120:00:231
5624995310,16cyclictest1832-21ps21:10:230
16442530,2sleep00-21swapper/020:05:230
562599524,9cyclictest25-21ksoftirqd/121:00:171
562599524,9cyclictest25-21ksoftirqd/120:55:251
562599523,9cyclictest25-21ksoftirqd/121:10:181
562599523,9cyclictest25-21ksoftirqd/119:15:151
562599515,9cyclictest25-21ksoftirqd/122:25:201
562599515,9cyclictest25-21ksoftirqd/122:20:281
562599515,8cyclictest25-21ksoftirqd/123:30:471
562599514,8cyclictest25-21ksoftirqd/120:20:161
562599513,8cyclictest25-21ksoftirqd/119:30:121
562599512,9cyclictest25-21ksoftirqd/119:55:171
5625995119,3cyclictest25-21ksoftirqd/123:04:541
562599511,6cyclictest25-21ksoftirqd/120:45:121
562499517,8cyclictest9298-21/usr/sbin/munin22:40:240
562499517,8cyclictest9298-21/usr/sbin/munin22:40:240
562499517,17cyclictest0-21swapper/000:35:180
5624995110,8cyclictest20748-21date23:00:270
5624995110,10cyclictest17051-21date21:40:260
5624995110,10cyclictest14657-21cut20:30:260
138491510,9ptp4l401ktimersoftd/323:05:393
562599506,10cyclictest25-21ksoftirqd/123:05:271
562599505,8cyclictest25-21ksoftirqd/122:05:241
562599505,10cyclictest25-21ksoftirqd/100:05:201
562599504,9cyclictest25-21ksoftirqd/121:30:141
562599504,9cyclictest25-21ksoftirqd/121:30:141
562599504,9cyclictest25-21ksoftirqd/120:30:141
562599504,7cyclictest25-21ksoftirqd/119:40:201
562599504,11cyclictest25-21ksoftirqd/123:50:131
562599503,8cyclictest25-21ksoftirqd/120:40:221
562599502,8cyclictest25-21ksoftirqd/120:35:251
5625995021,9cyclictest25-21ksoftirqd/100:35:241
562499509,9cyclictest0-21swapper/019:50:250
562499509,14cyclictest0-21swapper/020:50:220
562499508,9cyclictest0-21swapper/020:16:120
562499507,9cyclictest0-21swapper/019:15:240
5624995014,16cyclictest14214-21/usr/sbin/munin19:25:210
5624995013,9cyclictest23068-21/usr/sbin/munin00:15:160
5624995012,9cyclictest12422-21if_enp1s022:45:170
5624995012,10cyclictest17195-21/usr/sbin/munin00:00:150
5624995011,9cyclictest23543-21/usr/sbin/munin21:55:180
5624995011,11cyclictest29170-21ps22:05:230
5624995010,10cyclictest25860-21df_abs20:55:140
286122500,2sleep30-21swapper/319:55:193
5627994928,5cyclictest41-21ksoftirqd/322:55:013
5626994942,4cyclictest11455-21idleruntime-cro23:49:592
562599494,8cyclictest25-21ksoftirqd/123:55:231
562599494,8cyclictest25-21ksoftirqd/122:15:131
562599494,8cyclictest25-21ksoftirqd/121:20:131
562599494,10cyclictest25-21ksoftirqd/122:55:181
562599493,9cyclictest25-21ksoftirqd/123:10:121
562599493,7cyclictest25-21ksoftirqd/100:30:011
5625994924,4cyclictest25-21ksoftirqd/120:15:201
562599492,10cyclictest25-21ksoftirqd/123:35:191
562599492,10cyclictest25-21ksoftirqd/123:25:191
5624994911,10cyclictest30248-21/usr/sbin/munin20:00:100
562599486,10cyclictest25-21ksoftirqd/119:25:171
562599485,9cyclictest25-21ksoftirqd/120:05:281
562599484,11cyclictest25-21ksoftirqd/123:45:161
562599484,10cyclictest25-21ksoftirqd/120:25:141
562599483,9cyclictest25-21ksoftirqd/121:05:221
562599483,8cyclictest25-21ksoftirqd/123:20:201
562599483,8cyclictest25-21ksoftirqd/100:35:001
562599482,6cyclictest13514-21grep22:45:281
562599481,7cyclictest25-21ksoftirqd/121:25:161
562599481,6cyclictest25-21ksoftirqd/122:35:001
562599480,6cyclictest25-21ksoftirqd/120:50:211
562599475,11cyclictest25-21ksoftirqd/121:35:271
562599471,6cyclictest25-21ksoftirqd/119:10:141
562599471,6cyclictest25-21ksoftirqd/119:10:131
5624994710,10cyclictest20440-21/usr/sbin/munin21:50:100
562599465,10cyclictest25-21ksoftirqd/122:40:251
562599465,10cyclictest25-21ksoftirqd/122:40:251
562599464,9cyclictest25-21ksoftirqd/123:40:251
562599464,9cyclictest25-21ksoftirqd/123:40:251
562599464,10cyclictest25-21ksoftirqd/123:15:211
5625994623,9cyclictest25-21ksoftirqd/121:54:511
562599461,6cyclictest25-21ksoftirqd/121:15:151
562499469,10cyclictest0-21swapper/022:54:240
5626994540,3cyclictest30045-21cron22:10:002
5624994513,9cyclictest10706-21dpkg20:25:120
5624994512,9cyclictest27334-21/usr/sbin/munin23:15:180
5624994511,10cyclictest26900-21/usr/sbin/munin22:00:260
5624994510,11cyclictest20571-21mailstats00:05:270
562599442,7cyclictest25-21ksoftirqd/100:20:151
562599442,7cyclictest25-21ksoftirqd/100:20:151
562599442,6cyclictest25-21ksoftirqd/121:55:191
562599440,6cyclictest25-21ksoftirqd/100:00:241
562499448,6cyclictest6823-21ps21:20:230
562499438,9cyclictest22088-21sshd00:14:560
5624994310,7cyclictest6951-21phc2sys-jitter19:10:220
5624994310,7cyclictest6951-21phc2sys-jitter19:10:220
562699420,2cyclictest0-21swapper/220:14:442
138491410,0ptp4l401ktimersoftd/320:50:273
138491400,0ptp4l401ktimersoftd/323:30:223
5627993732,3cyclictest41-21ksoftirqd/320:10:013
5627993731,4cyclictest41-21ksoftirqd/322:43:003
5627993731,4cyclictest41-21ksoftirqd/322:43:003
5627993731,4cyclictest41-21ksoftirqd/319:42:563
5627993731,4cyclictest41-21ksoftirqd/300:06:043
5626993731,4cyclictest33-21ksoftirqd/221:25:562
5626993731,4cyclictest33-21ksoftirqd/221:05:162
138491370,0ptp4l401ktimersoftd/323:17:583
5627993630,4cyclictest41-21ksoftirqd/323:42:213
5627993630,4cyclictest41-21ksoftirqd/323:42:213
5627993630,4cyclictest41-21ksoftirqd/322:45:043
5627993630,4cyclictest41-21ksoftirqd/322:31:363
5627993630,4cyclictest41-21ksoftirqd/322:17:483
5626993630,4cyclictest33-21ksoftirqd/223:57:322
5626993630,4cyclictest33-21ksoftirqd/221:30:212
5626993630,4cyclictest33-21ksoftirqd/221:30:212
5626993630,4cyclictest33-21ksoftirqd/200:33:072
5626993630,4cyclictest33-21ksoftirqd/200:22:442
5626993630,4cyclictest33-21ksoftirqd/200:22:432
5626993630,4cyclictest33-21ksoftirqd/200:07:072
50798360,6rtkit-daemon506-21rtkit-daemon19:30:212
50798360,1rtkit-daemon506-21rtkit-daemon22:29:442
5627993529,4cyclictest41-21ksoftirqd/323:22:033
5627993529,4cyclictest41-21ksoftirqd/321:51:053
5627993528,5cyclictest41-21ksoftirqd/320:30:133
5627993528,4cyclictest9247-21egrep23:45:133
5627993516,17cyclictest41-21ksoftirqd/300:30:013
562799350,6cyclictest31739-21apache221:20:253
5626993530,3cyclictest33-21ksoftirqd/223:35:122
5626993530,3cyclictest33-21ksoftirqd/221:44:062
5626993529,4cyclictest33-21ksoftirqd/223:50:062
5626993529,4cyclictest33-21ksoftirqd/223:14:282
5626993529,4cyclictest33-21ksoftirqd/222:57:112
5626993529,4cyclictest33-21ksoftirqd/222:17:352
5626993529,4cyclictest33-21ksoftirqd/222:10:372
5626993529,4cyclictest33-21ksoftirqd/221:45:382
5626993529,4cyclictest33-21ksoftirqd/219:23:302
5626993529,4cyclictest33-21ksoftirqd/219:10:532
5626993529,4cyclictest33-21ksoftirqd/219:10:532
5626993528,4cyclictest33-21ksoftirqd/223:30:122
138491350,0ptp4l401ktimersoftd/322:55:233
138491350,0ptp4l401ktimersoftd/321:18:243
5627993429,3cyclictest41-21ksoftirqd/322:38:353
5627993429,3cyclictest41-21ksoftirqd/319:46:093
5627993428,4cyclictest41-21ksoftirqd/322:06:173
5627993428,4cyclictest41-21ksoftirqd/320:11:163
5627993428,4cyclictest41-21ksoftirqd/320:02:573
5627993428,4cyclictest41-21ksoftirqd/300:10:413
5627993428,4cyclictest41-21ksoftirqd/300:04:473
5626993429,3cyclictest33-21ksoftirqd/223:17:532
5626993429,3cyclictest33-21ksoftirqd/221:40:002
5626993428,4cyclictest33-21ksoftirqd/222:44:152
5626993428,4cyclictest33-21ksoftirqd/222:44:152
5626993428,4cyclictest33-21ksoftirqd/222:21:322
5626993428,4cyclictest33-21ksoftirqd/221:58:262
562599341,5cyclictest21867-21runrttasks00:12:111
5627993327,4cyclictest41-21ksoftirqd/322:20:053
5627993327,4cyclictest41-21ksoftirqd/322:14:113
5627993327,4cyclictest41-21ksoftirqd/321:08:203
5627993327,4cyclictest41-21ksoftirqd/320:29:173
5627993326,4cyclictest17568-21wc21:45:003
5626993328,3cyclictest33-21ksoftirqd/223:04:112
5626993328,3cyclictest33-21ksoftirqd/220:38:112
5626993327,4cyclictest33-21ksoftirqd/222:51:572
5626993327,4cyclictest33-21ksoftirqd/222:03:162
5626993327,4cyclictest33-21ksoftirqd/200:17:102
5626993326,5cyclictest33-21ksoftirqd/219:26:282
5627993227,3cyclictest41-21ksoftirqd/323:52:133
5627993227,3cyclictest41-21ksoftirqd/319:32:593
5627993226,4cyclictest41-21ksoftirqd/321:49:163
5626993227,3cyclictest33-21ksoftirqd/221:20:302
5626993227,3cyclictest33-21ksoftirqd/221:02:002
5626993227,3cyclictest33-21ksoftirqd/220:59:422
5626993226,4cyclictest33-21ksoftirqd/223:27:362
5626993226,4cyclictest33-21ksoftirqd/222:47:122
5626993226,4cyclictest33-21ksoftirqd/222:35:452
5626993226,4cyclictest33-21ksoftirqd/220:05:092
5626993226,4cyclictest33-21ksoftirqd/219:58:282
5626993226,4cyclictest33-21ksoftirqd/219:19:192
5626993226,4cyclictest33-21ksoftirqd/200:27:012
562699322,27cyclictest25214-21turbostat20:55:002
138491320,0ptp4l401ktimersoftd/300:30:133
5627993125,4cyclictest41-21ksoftirqd/321:12:413
5627993125,4cyclictest41-21ksoftirqd/320:59:173
5627993125,4cyclictest41-21ksoftirqd/319:50:063
5627993122,5cyclictest41-21ksoftirqd/321:55:133
5626993125,4cyclictest33-21ksoftirqd/220:29:132
5626993124,5cyclictest33-21ksoftirqd/220:02:062
138491310,0ptp4l401ktimersoftd/321:36:083
138491310,0ptp4l401ktimersoftd/321:28:233
138491310,0ptp4l401ktimersoftd/320:39:393
138491310,0ptp4l401ktimersoftd/320:19:583
5627993025,3cyclictest41-21ksoftirqd/322:28:333
5627993024,4cyclictest41-21ksoftirqd/320:22:073
5626993025,3cyclictest33-21ksoftirqd/223:06:562
5626993025,3cyclictest33-21ksoftirqd/221:52:162
5626993025,3cyclictest33-21ksoftirqd/220:46:352
5626993025,3cyclictest33-21ksoftirqd/219:52:132
5626993025,3cyclictest33-21ksoftirqd/200:10:202
5626993024,4cyclictest33-21ksoftirqd/220:40:392
5626993024,4cyclictest33-21ksoftirqd/220:32:182
5626993024,4cyclictest33-21ksoftirqd/220:19:492
5626993024,4cyclictest33-21ksoftirqd/200:37:362
5626993024,4cyclictest33-21ksoftirqd/200:02:182
138491300,0ptp4l401ktimersoftd/323:01:293
138491300,0ptp4l401ktimersoftd/320:41:303
138491300,0ptp4l401ktimersoftd/319:39:243
138491300,0ptp4l401ktimersoftd/319:15:153
5627992923,4cyclictest41-21ksoftirqd/321:32:193
5627992923,4cyclictest41-21ksoftirqd/321:32:193
5626992924,3cyclictest33-21ksoftirqd/221:11:442
5626992924,3cyclictest33-21ksoftirqd/220:23:212
5626992923,4cyclictest33-21ksoftirqd/223:42:242
5626992923,4cyclictest33-21ksoftirqd/223:42:242
5626992923,4cyclictest33-21ksoftirqd/221:18:262
138491290,0ptp4l401ktimersoftd/323:27:303
138491290,0ptp4l401ktimersoftd/322:02:123
138491290,0ptp4l401ktimersoftd/319:29:543
138491290,0ptp4l401ktimersoftd/300:37:503
5627992823,3cyclictest41-21ksoftirqd/323:13:493
5626992823,3cyclictest33-21ksoftirqd/219:43:322
5627992722,3cyclictest41-21ksoftirqd/321:00:193
5627992722,3cyclictest41-21ksoftirqd/300:20:333
5627992722,3cyclictest41-21ksoftirqd/300:20:333
5627992721,4cyclictest41-21ksoftirqd/323:58:183
5626992721,4cyclictest33-21ksoftirqd/219:37:532
5627992620,4cyclictest41-21ksoftirqd/320:45:213
5626992620,4cyclictest33-21ksoftirqd/222:32:402
5626992418,4cyclictest33-21ksoftirqd/219:47:282
138491240,0ptp4l401ktimersoftd/323:35:273
5626992016,3cyclictest33-21ksoftirqd/223:20:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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