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2026-05-01 - 16:14
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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 rackdslot2.osadl.org (updated Fri May 01, 2026 12:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1069822870,4sleep0101ktimersoftd/007:05:140
139591215171,33phc2sys0-21swapper/307:07:143
122432208173,23sleep10-21swapper/107:07:451
124192205172,22sleep20-21swapper/207:09:562
1271899771,74cyclictest0-21swapper/109:00:061
12718997416,56cyclictest0-21swapper/110:06:451
307362620,5sleep230740-21ptp4l-jitter07:45:252
139291610,1ptp4l401ktimersoftd/309:10:163
1271799616,11cyclictest9239-21strings09:15:210
84172600,4sleep20-21swapper/212:35:252
1271799605,11cyclictest4793-21grep09:05:240
1271799605,11cyclictest4793-21grep09:05:240
1271799595,11cyclictest15929-21sed07:15:200
1271799595,11cyclictest15929-21sed07:15:200
1271799594,11cyclictest4624-21sed10:15:010
5212570,2sleep10-21swapper/107:50:211
1271799574,11cyclictest27267-21date12:10:000
1271799574,10cyclictest16571-21latency_hist10:40:000
139291550,1ptp4l401ktimersoftd/309:16:363
1271799554,17cyclictest10565-21grep09:20:110
1271799553,10cyclictest8148-21ptp4l-jitter12:35:220
1271799546,11cyclictest15602-21cat11:45:150
1271799546,10cyclictest28150-21latency_hist08:50:000
1271799545,11cyclictest5981-21proc_pri10:15:230
1271799544,16cyclictest22346-21grep07:30:120
1271799536,10cyclictest20371-21expr11:55:120
1271799535,11cyclictest22642-21cat12:00:120
1271799534,16cyclictest1-21systemd08:35:240
1271799534,11cyclictest23595-21latency09:45:200
1271799524,17cyclictest422-21expr07:50:200
1271799523,17cyclictest18116-21if_err_enp4s007:20:160
1271799523,17cyclictest18116-21if_err_enp4s007:20:150
1271799504,16cyclictest2075-21latency11:15:200
139291490,1ptp4l391rcuc/309:20:353
1271799493,16cyclictest1308-21runrttasks08:27:430
1271799484,14cyclictest16491-21meminfo09:30:190
1271799482,8cyclictest3437-21ls07:55:240
139291470,1ptp4l401ktimersoftd/311:36:033
1271799472,7cyclictest26227-21ls07:35:240
12719994638,5cyclictest3137-21cron09:05:002
12718994617,27cyclictest0-21swapper/110:30:151
1271799462,7cyclictest3188-21ls12:25:210
1271799462,7cyclictest31118-21apt-get11:10:090
1271799462,7cyclictest31118-21apt-get11:10:090
41298450,10rtkit-daemon0-21swapper/109:14:231
12719994538,4cyclictest22042-21cron07:30:002
1271999451,42cyclictest29719-21latency_hist10:00:002
1271799453,8cyclictest28396-21apt-get08:50:120
1271799452,7cyclictest5752-21apt-get09:10:110
1271799452,15cyclictest10237-21ls08:10:220
1271799444,8cyclictest31387-21python10:00:240
1271799444,8cyclictest19281-21iostat08:30:170
1271799443,9cyclictest841-21apt-config09:00:010
1271799442,7cyclictest12529-21ls08:15:200
12720994338,3cyclictest17030-21fschecks_count10:40:143
1271799433,8cyclictest8858-21if_enp4s011:30:140
1271799433,8cyclictest31269-21hddtemp_smartct08:55:150
1271799433,7cyclictest7129-21apt-get10:20:110
1271799433,7cyclictest20564-21ls10:45:250
1271799433,7cyclictest14935-21memory08:20:210
139291420,0ptp4l401ktimersoftd/312:31:093
139291420,0ptp4l401ktimersoftd/308:24:103
12720994237,3cyclictest41-21ksoftirqd/309:10:003
12720994237,3cyclictest41-21ksoftirqd/309:10:003
12720994237,3cyclictest41-21ksoftirqd/308:40:003
1271799424,8cyclictest25078-21python08:40:250
1271799424,8cyclictest14157-21sensors_temp07:10:250
1271799422,8cyclictest1430-21ls10:05:250
139291410,0ptp4l401ktimersoftd/308:00:193
12720994136,3cyclictest41-21ksoftirqd/310:55:003
12719994130,9cyclictest33-21ksoftirqd/211:10:142
12719994130,9cyclictest33-21ksoftirqd/211:10:132
1271999412,5cyclictest121rcu_preempt09:20:002
1271799413,8cyclictest22442-21memory10:50:180
1271799413,7cyclictest14059-21memory11:40:210
1271799412,7cyclictest28122-21users11:00:280
139291400,1ptp4l401ktimersoftd/311:25:373
12720994033,5cyclictest41-21ksoftirqd/312:20:003
139291390,0ptp4l401ktimersoftd/307:35:193
12720993934,3cyclictest41-21ksoftirqd/310:40:003
12720993934,3cyclictest41-21ksoftirqd/308:14:593
12720993928,9cyclictest41-21ksoftirqd/309:50:223
1271799393,7cyclictest29776-21meminfo11:05:200
1271799393,6cyclictest28332-21meminfo12:10:190
1271799392,8cyclictest18849-21ls09:35:190
1271799392,7cyclictest5415-21ls08:00:200
12720993833,3cyclictest41-21ksoftirqd/308:35:003
12720993832,4cyclictest41-21ksoftirqd/312:04:133
12720993832,4cyclictest41-21ksoftirqd/310:31:303
12720993832,4cyclictest41-21ksoftirqd/310:23:443
12720993832,4cyclictest41-21ksoftirqd/308:53:593
12720993832,4cyclictest41-21ksoftirqd/308:45:403
12719993833,3cyclictest33-21ksoftirqd/212:20:002
12719993833,3cyclictest33-21ksoftirqd/212:01:232
12719993833,2cyclictest33-21ksoftirqd/208:55:002
12719993832,4cyclictest33-21ksoftirqd/207:41:522
12719993832,3cyclictest33-21ksoftirqd/212:20:182
12720993733,3cyclictest41-21ksoftirqd/310:10:183
12720993733,2cyclictest41-21ksoftirqd/311:30:103
12720993732,3cyclictest41-21ksoftirqd/312:27:023
12720993732,3cyclictest41-21ksoftirqd/311:40:193
12720993732,3cyclictest41-21ksoftirqd/310:20:013
12720993732,3cyclictest41-21ksoftirqd/308:28:223
12720993732,3cyclictest41-21ksoftirqd/308:15:193
12720993732,3cyclictest41-21ksoftirqd/307:25:193
12720993731,4cyclictest41-21ksoftirqd/311:19:083
12720993722,4cyclictest41-21ksoftirqd/309:45:133
12719993733,3cyclictest33-21ksoftirqd/209:55:002
12719993732,3cyclictest33-21ksoftirqd/211:25:002
12719993731,4cyclictest33-21ksoftirqd/209:34:212
12719993731,4cyclictest33-21ksoftirqd/208:27:572
12719993731,3cyclictest33-21ksoftirqd/208:05:012
12719993725,10cyclictest33-21ksoftirqd/210:30:112
12718993731,4cyclictest25-21ksoftirqd/109:44:421
12720993632,2cyclictest41-21ksoftirqd/307:50:003
12720993631,3cyclictest41-21ksoftirqd/312:05:193
12720993631,3cyclictest41-21ksoftirqd/311:10:173
12720993631,3cyclictest41-21ksoftirqd/311:10:173
12720993631,3cyclictest41-21ksoftirqd/310:30:003
12720993631,3cyclictest41-21ksoftirqd/310:05:193
12720993631,3cyclictest41-21ksoftirqd/309:40:183
12720993630,4cyclictest41-21ksoftirqd/312:38:193
12720993630,4cyclictest41-21ksoftirqd/311:52:373
12720993630,4cyclictest41-21ksoftirqd/311:06:293
12720993630,4cyclictest41-21ksoftirqd/309:56:163
12720993630,4cyclictest41-21ksoftirqd/309:01:483
12719993632,2cyclictest33-21ksoftirqd/208:19:592
12719993631,3cyclictest33-21ksoftirqd/211:05:002
12719993631,3cyclictest33-21ksoftirqd/209:45:142
12719993631,3cyclictest33-21ksoftirqd/207:50:182
12719993630,4cyclictest33-21ksoftirqd/210:39:072
12719993630,4cyclictest33-21ksoftirqd/209:44:232
12719993630,4cyclictest33-21ksoftirqd/209:38:222
12719993630,3cyclictest33-21ksoftirqd/210:55:002
12719993630,3cyclictest33-21ksoftirqd/210:45:002
12719993625,9cyclictest33-21ksoftirqd/209:25:252
1271999360,35cyclictest29413-21kworker/2:010:05:252
1271899366,29cyclictest0-21swapper/109:05:551
1271899366,29cyclictest0-21swapper/109:05:551
12718993631,3cyclictest25-21ksoftirqd/110:01:471
12718993630,4cyclictest25-21ksoftirqd/109:47:431
12718993630,4cyclictest25-21ksoftirqd/109:21:401
12718993629,4cyclictest25-21ksoftirqd/108:10:351
12718993613,3cyclictest7323-21cstates10:20:131
12720993530,3cyclictest41-21ksoftirqd/311:49:413
12720993530,3cyclictest41-21ksoftirqd/311:02:273
12720993530,3cyclictest41-21ksoftirqd/308:00:003
12720993530,3cyclictest41-21ksoftirqd/307:40:083
12720993529,4cyclictest41-21ksoftirqd/310:00:533
12720993529,4cyclictest41-21ksoftirqd/307:33:183
12720993524,10cyclictest41-21ksoftirqd/308:05:243
12720993520,3cyclictest41-21ksoftirqd/309:40:003
1271999354,3cyclictest121rcu_preempt12:30:132
12719993532,2cyclictest33-21ksoftirqd/208:45:002
12719993530,3cyclictest33-21ksoftirqd/211:50:532
12719993530,3cyclictest33-21ksoftirqd/210:18:512
12719993530,3cyclictest33-21ksoftirqd/209:10:182
12719993530,3cyclictest33-21ksoftirqd/208:40:002
12719993529,4cyclictest33-21ksoftirqd/212:27:192
12719993529,4cyclictest33-21ksoftirqd/211:36:202
12719993529,4cyclictest33-21ksoftirqd/210:28:322
12719993529,4cyclictest33-21ksoftirqd/210:14:002
12719993529,4cyclictest33-21ksoftirqd/208:13:452
12719993529,3cyclictest33-21ksoftirqd/210:50:002
12719993529,3cyclictest33-21ksoftirqd/209:20:172
12719993527,5cyclictest33-21ksoftirqd/211:05:062
12719993524,9cyclictest33-21ksoftirqd/212:10:152
12718993529,4cyclictest25-21ksoftirqd/108:40:111
12718993514,19cyclictest6244-21timerandwakeup10:15:261
12717993529,4cyclictest9-21ksoftirqd/011:21:580
12720993430,3cyclictest41-21ksoftirqd/312:20:133
12720993430,3cyclictest41-21ksoftirqd/308:40:193
12720993429,3cyclictest41-21ksoftirqd/310:55:543
12720993428,4cyclictest41-21ksoftirqd/308:56:233
12719993430,2cyclictest33-21ksoftirqd/212:05:192
12719993429,3cyclictest33-21ksoftirqd/210:20:132
12719993428,4cyclictest33-21ksoftirqd/209:05:182
12719993428,4cyclictest33-21ksoftirqd/209:05:182
12719993428,3cyclictest33-21ksoftirqd/211:30:082
12718993429,3cyclictest25-21ksoftirqd/108:54:211
12718993428,4cyclictest25-21ksoftirqd/111:48:261
12718993428,4cyclictest25-21ksoftirqd/109:53:051
12718993428,4cyclictest25-21ksoftirqd/108:28:361
12718993428,4cyclictest25-21ksoftirqd/108:19:581
12718993428,4cyclictest25-21ksoftirqd/107:41:241
12718993428,4cyclictest25-21ksoftirqd/107:37:381
1271899342,12cyclictest15915-21tail10:35:251
12718993412,3cyclictest7328-21hddtemp_smartct12:35:141
12718993411,3cyclictest19989-21sort09:40:001
1271799344,5cyclictest0-21swapper/011:54:180
12717993429,3cyclictest9-21ksoftirqd/009:25:100
12717993428,4cyclictest9-21ksoftirqd/010:34:400
12717993428,4cyclictest9-21ksoftirqd/007:42:100
12717993428,4cyclictest9-21ksoftirqd/007:28:500
12720993328,3cyclictest41-21ksoftirqd/307:50:123
12720993327,4cyclictest41-21ksoftirqd/307:21:153
12720993327,4cyclictest41-21ksoftirqd/307:21:153
12720993321,5cyclictest41-21ksoftirqd/307:15:003
12719993329,3cyclictest33-21ksoftirqd/210:00:152
12719993328,3cyclictest33-21ksoftirqd/211:40:192
12719993327,4cyclictest33-21ksoftirqd/208:45:422
12719993327,3cyclictest33-21ksoftirqd/211:50:012
12719993323,9cyclictest33-21ksoftirqd/211:55:262
12719993321,9cyclictest33-21ksoftirqd/207:20:232
12719993321,9cyclictest33-21ksoftirqd/207:20:222
12719993321,10cyclictest33-21ksoftirqd/207:55:222
1271899339,4cyclictest1-21systemd08:35:001
1271899339,3cyclictest24143-21cpuspeed_turbos10:55:121
1271899336,7cyclictest10260-21sendmail09:20:001
1271899334,8cyclictest13291-21sort07:10:161
12718993328,3cyclictest25-21ksoftirqd/112:09:551
12718993328,3cyclictest25-21ksoftirqd/111:11:591
12718993328,3cyclictest25-21ksoftirqd/111:11:591
12718993328,3cyclictest25-21ksoftirqd/108:09:071
12718993327,4cyclictest25-21ksoftirqd/112:28:061
12718993327,4cyclictest25-21ksoftirqd/112:03:551
12718993327,4cyclictest25-21ksoftirqd/111:16:211
12718993327,4cyclictest25-21ksoftirqd/110:12:261
12718993327,4cyclictest25-21ksoftirqd/109:31:231
12718993327,4cyclictest25-21ksoftirqd/109:27:011
12718993327,4cyclictest25-21ksoftirqd/107:59:551
12718993326,4cyclictest25-21ksoftirqd/111:31:131
12718993326,4cyclictest25-21ksoftirqd/111:09:271
12718993313,2cyclictest22769-21fschecks_time07:30:151
12717993328,3cyclictest9-21ksoftirqd/012:18:540
12717993328,3cyclictest9-21ksoftirqd/010:27:020
12717993327,4cyclictest9-21ksoftirqd/012:24:200
12717993327,4cyclictest9-21ksoftirqd/010:56:140
12720993229,2cyclictest41-21ksoftirqd/309:30:013
12720993227,3cyclictest41-21ksoftirqd/311:55:263
12720993227,3cyclictest41-21ksoftirqd/311:20:133
12720993226,4cyclictest41-21ksoftirqd/309:30:443
12719993226,3cyclictest33-21ksoftirqd/208:05:062
12719993219,4cyclictest33-21ksoftirqd/211:25:182
1271899329,2cyclictest58552sleep108:00:251
1271899325,26cyclictest0-21swapper/110:50:451
12718993227,3cyclictest25-21ksoftirqd/111:23:301
12718993227,3cyclictest25-21ksoftirqd/107:46:001
12718993227,3cyclictest25-21ksoftirqd/107:16:231
12718993227,3cyclictest25-21ksoftirqd/107:16:231
12718993226,4cyclictest25-21ksoftirqd/111:52:191
12718993226,4cyclictest25-21ksoftirqd/109:57:061
12718993210,3cyclictest20530-21irqrtprio07:25:181
12718993210,3cyclictest10991-21threads10:25:251
1271799328,15cyclictest5883-21sshd11:25:100
12717993228,3cyclictest9-21ksoftirqd/012:30:100
1271799322,7cyclictest20509-21df09:40:130
12717993226,4cyclictest9-21ksoftirqd/007:46:430
12720993127,3cyclictest41-21ksoftirqd/312:10:183
12719993127,2cyclictest33-21ksoftirqd/208:20:212
12719993126,3cyclictest33-21ksoftirqd/208:30:172
12719993126,3cyclictest33-21ksoftirqd/207:35:132
12719993121,9cyclictest33-21ksoftirqd/211:15:142
1271899318,22cyclictest0-21swapper/108:56:341
1271899315,5cyclictest0-21swapper/112:15:251
12718993126,3cyclictest25-21ksoftirqd/111:28:051
12718993126,3cyclictest25-21ksoftirqd/111:00:431
12718993125,4cyclictest25-21ksoftirqd/111:35:541
12718993112,3cyclictest18004-21mailstats10:40:231
12717993125,4cyclictest9-21ksoftirqd/008:05:380
12720993025,3cyclictest41-21ksoftirqd/307:16:153
12720993025,3cyclictest41-21ksoftirqd/307:16:153
12719993026,3cyclictest33-21ksoftirqd/207:15:202
12719993026,3cyclictest33-21ksoftirqd/207:15:202
12719993025,3cyclictest33-21ksoftirqd/210:56:422
1271899306,4cyclictest0-21swapper/110:45:131
12718993025,3cyclictest25-21ksoftirqd/112:30:341
12718993025,3cyclictest25-21ksoftirqd/111:58:291
12718993024,4cyclictest25-21ksoftirqd/111:42:211
12718993024,4cyclictest25-21ksoftirqd/108:37:471
1271799300,21cyclictest0-21swapper/009:50:100
12720992923,3cyclictest41-21ksoftirqd/310:45:183
12719992924,3cyclictest33-21ksoftirqd/207:30:152
12719992923,4cyclictest33-21ksoftirqd/207:10:562
1271899293,4cyclictest17501-21apt-get07:20:101
1271899293,4cyclictest17501-21apt-get07:20:101
12718992923,4cyclictest25-21ksoftirqd/108:46:251
1271799295,5cyclictest0-21swapper/011:35:140
12719992816,10cyclictest33-21ksoftirqd/208:55:122
12718992823,3cyclictest25-21ksoftirqd/112:24:141
1271799281,11cyclictest0-21swapper/009:55:190
1271799272,10cyclictest0-21swapper/010:40:130
12718992621,3cyclictest25-21ksoftirqd/108:24:471
12718992419,3cyclictest25-21ksoftirqd/112:11:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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