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2026-04-29 - 14:19
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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 Wed Apr 29, 2026 00:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
205182205172,21sleep20-21swapper/219:07:482
138591205171,22phc2sys0-21swapper/319:06:553
205462202169,21sleep00-21swapper/019:08:100
203412201168,22sleep10-21swapper/119:05:301
107621500,6sleep12098099cyclictest22:45:141
1450121450,6sleep02097999cyclictest22:05:240
20981999137,10cyclictest33-21ksoftirqd/219:20:302
1385918463,12phc2sys0-21swapper/319:10:003
20981997537,4cyclictest33-21ksoftirqd/219:20:012
20981997136,2cyclictest33-21ksoftirqd/222:55:132
138491710,1ptp4l401ktimersoftd/320:47:433
20981996231,4cyclictest33-21ksoftirqd/220:39:592
20981996228,4cyclictest33-21ksoftirqd/200:40:002
20981996131,4cyclictest33-21ksoftirqd/219:30:262
138491600,1ptp4l401ktimersoftd/322:27:403
20981995930,5cyclictest33-21ksoftirqd/223:40:242
138491580,1ptp4l401ktimersoftd/322:48:463
20981995731,7cyclictest33-21ksoftirqd/200:00:272
20981995729,7cyclictest33-21ksoftirqd/221:30:012
20981995726,5cyclictest33-21ksoftirqd/200:15:192
20981995620,8cyclictest33-21ksoftirqd/221:40:002
20981995530,6cyclictest33-21ksoftirqd/219:40:152
20981995526,7cyclictest33-21ksoftirqd/223:30:002
20981995525,4cyclictest33-21ksoftirqd/223:15:262
20981995525,4cyclictest33-21ksoftirqd/221:45:222
20981995522,9cyclictest33-21ksoftirqd/220:50:002
20981995522,3cyclictest33-21ksoftirqd/222:10:172
20981995518,6cyclictest33-21ksoftirqd/219:10:272
20981995518,10cyclictest33-21ksoftirqd/221:20:002
20981995429,7cyclictest33-21ksoftirqd/223:10:192
20981995421,5cyclictest33-21ksoftirqd/220:55:172
20981995421,4cyclictest33-21ksoftirqd/219:40:002
20981995418,10cyclictest33-21ksoftirqd/221:14:592
20981995414,6cyclictest33-21ksoftirqd/200:05:142
238992530,1sleep10-21swapper/123:30:181
2098199537,3cyclictest33-21ksoftirqd/219:51:332
20981995329,7cyclictest33-21ksoftirqd/220:15:012
20981995327,7cyclictest33-21ksoftirqd/220:05:232
20981995320,4cyclictest33-21ksoftirqd/200:15:012
20981995317,4cyclictest33-21ksoftirqd/220:19:592
20981995317,4cyclictest33-21ksoftirqd/220:19:592
20981995314,6cyclictest33-21ksoftirqd/222:50:142
20981995226,7cyclictest33-21ksoftirqd/220:55:012
20981995222,4cyclictest33-21ksoftirqd/220:40:192
20981995215,6cyclictest33-21ksoftirqd/222:20:132
20981995127,6cyclictest33-21ksoftirqd/221:35:002
20981995122,4cyclictest33-21ksoftirqd/220:00:162
20981995118,4cyclictest33-21ksoftirqd/221:25:012
20981995115,6cyclictest33-21ksoftirqd/221:55:172
20981995022,7cyclictest33-21ksoftirqd/223:45:272
20981995019,4cyclictest33-21ksoftirqd/220:25:012
2098199492,3cyclictest33-21ksoftirqd/200:30:252
20981994923,7cyclictest33-21ksoftirqd/222:45:182
20981994921,3cyclictest33-21ksoftirqd/223:03:472
20981994920,6cyclictest33-21ksoftirqd/223:05:262
20981994920,3cyclictest33-21ksoftirqd/219:30:002
20981994919,4cyclictest33-21ksoftirqd/219:55:132
20981994916,3cyclictest33-21ksoftirqd/222:00:212
20981994915,4cyclictest33-21ksoftirqd/223:30:132
254972480,2sleep20-21swapper/223:35:002
20981994825,6cyclictest33-21ksoftirqd/223:25:002
20981994822,8cyclictest33-21ksoftirqd/222:35:002
20981994820,4cyclictest33-21ksoftirqd/222:25:132
20981994818,10cyclictest33-21ksoftirqd/200:25:002
20981994817,6cyclictest33-21ksoftirqd/222:05:282
20981994817,10cyclictest33-21ksoftirqd/219:45:182
20981994738,3cyclictest33-21ksoftirqd/221:50:212
2098199473,3cyclictest33-21ksoftirqd/221:05:252
20981994722,6cyclictest33-21ksoftirqd/220:30:192
20981994620,8cyclictest33-21ksoftirqd/222:15:182
138491450,0ptp4l401ktimersoftd/319:56:213
2098199442,3cyclictest33-21ksoftirqd/200:25:172
20981994417,3cyclictest33-21ksoftirqd/221:44:162
20981994415,6cyclictest33-21ksoftirqd/222:35:262
2098199440,2cyclictest121rcu_preempt20:30:012
138491440,0ptp4l401ktimersoftd/322:57:073
20981994313,7cyclictest33-21ksoftirqd/223:50:192
138491430,0ptp4l401ktimersoftd/323:25:213
138491430,0ptp4l401ktimersoftd/319:52:433
20980994236,4cyclictest12583-21cron21:00:001
138491420,0ptp4l401ktimersoftd/322:10:253
138491420,0ptp4l401ktimersoftd/321:57:473
20981994114,8cyclictest33-21ksoftirqd/221:00:142
135191410,1getstats0-21swapper/321:01:373
50798400,4rtkit-daemon15461-21cron00:20:001
20982994034,3cyclictest2203-21cron19:35:003
20981994034,3cyclictest33-21ksoftirqd/222:45:002
20980994035,3cyclictest25-21ksoftirqd/119:20:211
138491400,0ptp4l401ktimersoftd/300:10:013
20982993832,3cyclictest41-21ksoftirqd/323:55:113
20979993831,4cyclictest9-21ksoftirqd/019:20:220
50798370,3rtkit-daemon31071-21iostat_ios21:35:181
20982993732,3cyclictest41-21ksoftirqd/320:30:003
20981993731,3cyclictest33-21ksoftirqd/223:55:142
20980993731,4cyclictest25-21ksoftirqd/122:19:451
20980993714,20cyclictest28387-21cut22:35:121
20980993713,21cyclictest30653-21iostat19:25:191
50798360,2rtkit-daemon0-21swapper/022:35:250
20982993630,4cyclictest41-21ksoftirqd/323:48:303
20982993630,4cyclictest41-21ksoftirqd/319:20:003
20982993630,3cyclictest41-21ksoftirqd/322:40:003
20982993629,5cyclictest41-21ksoftirqd/322:40:563
20982993629,5cyclictest41-21ksoftirqd/321:22:113
20982993629,5cyclictest41-21ksoftirqd/320:12:563
20982993629,4cyclictest41-21ksoftirqd/322:50:393
20980993630,4cyclictest25-21ksoftirqd/123:47:201
20980993630,4cyclictest25-21ksoftirqd/122:34:271
20980993630,4cyclictest25-21ksoftirqd/119:58:531
20980993629,4cyclictest7197-21sh19:44:591
20980993619,14cyclictest25-21ksoftirqd/121:15:131
20980993612,3cyclictest6151-21sed20:45:201
20979993630,4cyclictest9-21ksoftirqd/022:23:100
138591360,2phc2sys121rcu_preempt23:00:243
138491360,0ptp4l401ktimersoftd/321:15:523
20982993530,3cyclictest41-21ksoftirqd/319:20:303
20982993529,4cyclictest41-21ksoftirqd/319:48:323
20982993529,4cyclictest41-21ksoftirqd/319:44:033
20982993528,5cyclictest41-21ksoftirqd/320:09:053
20982993528,4cyclictest41-21ksoftirqd/323:50:113
2098099356,27cyclictest0-21swapper/122:59:231
20980993530,3cyclictest25-21ksoftirqd/119:20:001
20980993529,4cyclictest25-21ksoftirqd/120:02:061
20980993512,4cyclictest16031-21sed23:15:141
20980993512,3cyclictest18027-21sed00:25:011
20979993530,3cyclictest9-21ksoftirqd/000:05:040
20979993529,4cyclictest9-21ksoftirqd/020:51:240
2097999352,2cyclictest121rcu_preempt00:32:480
180323528,3sleep125-21ksoftirqd/123:50:221
20982993429,3cyclictest41-21ksoftirqd/320:15:403
20982993429,3cyclictest41-21ksoftirqd/320:15:403
20982993428,4cyclictest41-21ksoftirqd/323:34:583
20982993428,4cyclictest41-21ksoftirqd/321:37:163
20982993428,4cyclictest41-21ksoftirqd/320:38:073
20982993428,4cyclictest41-21ksoftirqd/320:25:013
20982993428,4cyclictest41-21ksoftirqd/300:22:243
20982993427,5cyclictest41-21ksoftirqd/321:47:343
2098099349,3cyclictest12165-21sh19:55:011
20980993429,3cyclictest25-21ksoftirqd/123:05:101
20980993429,3cyclictest25-21ksoftirqd/121:47:241
20980993429,3cyclictest25-21ksoftirqd/100:04:381
20980993428,4cyclictest25-21ksoftirqd/123:58:351
20980993428,4cyclictest25-21ksoftirqd/123:10:281
20980993428,4cyclictest25-21ksoftirqd/120:27:451
20980993412,3cyclictest8105-21if_enp4s019:45:161
20980993412,3cyclictest25231-21seq00:38:571
20980993410,3cyclictest22803-21awk19:10:281
20979993428,4cyclictest9-21ksoftirqd/023:27:580
20979993428,4cyclictest9-21ksoftirqd/019:19:580
20979993428,4cyclictest9-21ksoftirqd/019:12:310
20979993426,5cyclictest9-21ksoftirqd/022:40:560
20982993327,4cyclictest41-21ksoftirqd/323:21:583
20982993327,4cyclictest41-21ksoftirqd/300:00:013
20982993327,3cyclictest41-21ksoftirqd/319:39:593
20982993326,5cyclictest41-21ksoftirqd/321:27:403
2098099339,4cyclictest1319-21snmpd00:26:351
2098099334,27cyclictest0-21swapper/122:05:231
20980993327,4cyclictest25-21ksoftirqd/123:24:041
20980993327,4cyclictest25-21ksoftirqd/120:30:381
20980993327,4cyclictest25-21ksoftirqd/120:20:081
20980993311,3cyclictest22923-21cat22:25:001
20979993328,3cyclictest9-21ksoftirqd/023:49:110
20979993328,3cyclictest9-21ksoftirqd/023:20:210
20979993327,4cyclictest9-21ksoftirqd/020:41:160
20979993327,4cyclictest9-21ksoftirqd/019:51:290
20979993327,4cyclictest9-21ksoftirqd/000:21:080
20979993327,3cyclictest9-21ksoftirqd/021:56:180
864623226,3sleep341-21ksoftirqd/320:50:193
20982993228,3cyclictest41-21ksoftirqd/321:05:203
20982993226,4cyclictest41-21ksoftirqd/321:40:403
20982993226,4cyclictest41-21ksoftirqd/321:10:483
20980993227,3cyclictest25-21ksoftirqd/123:41:091
20980993227,3cyclictest25-21ksoftirqd/122:40:391
20980993226,4cyclictest25-21ksoftirqd/121:53:381
20980993226,4cyclictest25-21ksoftirqd/120:51:051
20980993226,4cyclictest25-21ksoftirqd/120:09:281
20980993226,4cyclictest25-21ksoftirqd/119:37:111
20980993226,4cyclictest25-21ksoftirqd/100:32:361
20980993210,3cyclictest9319-21memory23:00:201
20980993210,3cyclictest2889-21latency_hist21:45:011
20980993210,3cyclictest12035-21netstat00:10:221
20979993227,3cyclictest9-21ksoftirqd/022:48:450
20979993226,4cyclictest9-21ksoftirqd/023:40:000
20979993226,4cyclictest9-21ksoftirqd/021:32:280
20979993226,4cyclictest9-21ksoftirqd/021:03:430
20979993225,4cyclictest9-21ksoftirqd/022:55:030
20982993126,3cyclictest41-21ksoftirqd/323:36:103
20982993126,3cyclictest41-21ksoftirqd/320:57:133
20982993126,3cyclictest41-21ksoftirqd/319:30:013
2098299311,28cyclictest14715-21kworker/3:221:30:143
2098099319,3cyclictest482-21expr20:35:141
2098099313,8cyclictest28066-21tr21:30:141
20980993126,3cyclictest25-21ksoftirqd/123:29:551
20980993126,3cyclictest25-21ksoftirqd/122:54:121
20980993126,3cyclictest25-21ksoftirqd/121:28:051
20980993125,4cyclictest25-21ksoftirqd/121:24:131
20980993125,4cyclictest25-21ksoftirqd/121:00:581
20980993125,4cyclictest25-21ksoftirqd/120:19:431
20980993125,4cyclictest25-21ksoftirqd/120:19:431
20980993125,4cyclictest25-21ksoftirqd/120:14:301
20980993125,4cyclictest25-21ksoftirqd/100:08:091
2098099312,28cyclictest0-21swapper/122:25:441
20980993111,3cyclictest15991-21if_err_enp1s021:05:181
20979993126,3cyclictest9-21ksoftirqd/023:10:110
20979993126,3cyclictest9-21ksoftirqd/021:23:450
20979993126,3cyclictest9-21ksoftirqd/019:33:470
20979993125,4cyclictest9-21ksoftirqd/022:50:330
20979993125,4cyclictest9-21ksoftirqd/022:15:440
20979993125,4cyclictest9-21ksoftirqd/021:28:020
20979993125,4cyclictest9-21ksoftirqd/020:46:090
20979993125,4cyclictest9-21ksoftirqd/020:04:180
20979993125,4cyclictest9-21ksoftirqd/000:28:180
138491310,0ptp4l401ktimersoftd/322:05:443
138491310,0ptp4l401ktimersoftd/320:31:423
138491310,0ptp4l401ktimersoftd/320:03:093
20982993025,3cyclictest41-21ksoftirqd/322:30:233
20982993024,4cyclictest41-21ksoftirqd/323:42:573
2098099302,26cyclictest30366-21kworker/1:222:13:201
20979993025,3cyclictest9-21ksoftirqd/023:53:560
20979993025,3cyclictest9-21ksoftirqd/022:27:550
20979993025,3cyclictest9-21ksoftirqd/022:13:480
20979993025,3cyclictest9-21ksoftirqd/000:00:110
20979993024,4cyclictest9-21ksoftirqd/021:37:080
20979993024,4cyclictest9-21ksoftirqd/020:55:370
138491300,9ptp4l401ktimersoftd/323:15:013
138491300,0ptp4l401ktimersoftd/322:16:023
138491300,0ptp4l401ktimersoftd/320:43:083
20982992924,3cyclictest41-21ksoftirqd/322:21:543
20982992923,4cyclictest41-21ksoftirqd/323:06:413
20982992923,4cyclictest41-21ksoftirqd/322:03:003
20980992924,3cyclictest25-21ksoftirqd/121:14:141
20979992924,3cyclictest9-21ksoftirqd/023:08:380
20979992924,3cyclictest9-21ksoftirqd/022:33:000
20979992924,3cyclictest9-21ksoftirqd/021:17:580
20979992924,3cyclictest9-21ksoftirqd/020:36:270
20979992924,3cyclictest9-21ksoftirqd/019:44:300
20979992924,3cyclictest9-21ksoftirqd/019:29:550
20982992824,2cyclictest41-21ksoftirqd/300:38:393
20982992823,3cyclictest41-21ksoftirqd/323:14:093
20982992823,3cyclictest41-21ksoftirqd/321:54:153
20982992823,3cyclictest41-21ksoftirqd/300:30:213
20980992823,3cyclictest25-21ksoftirqd/119:31:041
20979992823,3cyclictest9-21ksoftirqd/023:00:090
20979992823,3cyclictest9-21ksoftirqd/020:08:080
20979992823,3cyclictest9-21ksoftirqd/019:45:100
20979992822,4cyclictest9-21ksoftirqd/021:08:130
20979992822,4cyclictest9-21ksoftirqd/020:14:090
20979992822,3cyclictest9-21ksoftirqd/023:31:070
20979992822,3cyclictest9-21ksoftirqd/023:18:540
20982992724,2cyclictest41-21ksoftirqd/300:20:003
20980992722,3cyclictest25-21ksoftirqd/120:40:121
20979992722,3cyclictest9-21ksoftirqd/021:53:220
20979992722,3cyclictest9-21ksoftirqd/020:24:550
20979992722,3cyclictest9-21ksoftirqd/000:39:310
20979992722,3cyclictest9-21ksoftirqd/000:17:310
20979992721,4cyclictest9-21ksoftirqd/021:45:270
20979992721,4cyclictest9-21ksoftirqd/021:14:090
20980992620,4cyclictest25-21ksoftirqd/123:37:051
20979992621,3cyclictest9-21ksoftirqd/023:43:450
20979992621,3cyclictest9-21ksoftirqd/020:27:090
20979992621,3cyclictest9-21ksoftirqd/000:14:070
20979992620,4cyclictest9-21ksoftirqd/021:42:460
20979992520,3cyclictest9-21ksoftirqd/020:17:140
20979992520,3cyclictest9-21ksoftirqd/020:17:130
20979992418,4cyclictest9-21ksoftirqd/022:03:400
138491240,0ptp4l401ktimersoftd/300:25:153
138491240,0ptp4l401ktimersoftd/300:05:203
20979992318,3cyclictest9-21ksoftirqd/023:59:540
20979992318,3cyclictest9-21ksoftirqd/019:56:550
20979992217,3cyclictest9-21ksoftirqd/019:38:020
20979992116,3cyclictest9-21ksoftirqd/020:34:030
2098099206,12cyclictest7623-21apt-get21:55:041
20980992015,3cyclictest25-21ksoftirqd/122:04:371
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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