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2026-03-12 - 05:30
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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 Thu Mar 12, 2026 00:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
199882228160,23sleep30-21swapper/319:06:023
200252202170,21sleep20-21swapper/219:06:282
200242202168,23sleep10-21swapper/119:06:281
202662201166,23sleep00-21swapper/019:09:360
566621750,3sleep02058899cyclictest19:45:130
64762670,2sleep10-21swapper/120:50:171
2058899670,24cyclictest8024-21latency_hist00:09:590
213162640,8sleep32059199cyclictest20:15:173
76322570,6sleep233-21ksoftirqd/220:52:192
2058899570,24cyclictest13041-21apt00:20:090
2058899570,24cyclictest13041-21apt00:20:090
2058899560,24cyclictest30609-21cstates23:50:130
138491560,1ptp4l401ktimersoftd/320:20:443
2058899540,21cyclictest23928-21runrttasks21:25:180
138491460,36ptp4l0-21swapper/319:10:023
138491460,0ptp4l401ktimersoftd/300:26:193
20588994526,16cyclictest9-21ksoftirqd/023:40:110
20590994238,2cyclictest33-21ksoftirqd/221:00:012
20590994236,4cyclictest33-21ksoftirqd/219:25:002
20590994236,3cyclictest33-21ksoftirqd/200:40:002
2058999422,37cyclictest10380-21cron19:55:011
138491420,0ptp4l401ktimersoftd/321:10:023
138491420,0ptp4l401ktimersoftd/321:02:403
20590994136,3cyclictest7588-21cron22:00:002
138491410,0ptp4l401ktimersoftd/323:15:183
2058899400,3cyclictest21358-21iostat_ios00:35:180
20591993934,3cyclictest41-21ksoftirqd/320:40:003
20590993934,3cyclictest33-21ksoftirqd/223:10:002
20590993928,9cyclictest33-21ksoftirqd/220:00:252
20590993917,14cyclictest33-21ksoftirqd/222:05:122
138491390,1ptp4l401ktimersoftd/300:17:193
20591993833,3cyclictest41-21ksoftirqd/319:35:003
20591993832,4cyclictest41-21ksoftirqd/323:02:063
20591993832,3cyclictest25034-21dump-pmu-power23:40:003
20590993833,3cyclictest33-21ksoftirqd/200:25:152
20590993827,9cyclictest33-21ksoftirqd/222:20:212
2058899380,1cyclictest0-21swapper/021:30:230
138491380,1ptp4l0-21swapper/322:28:043
20591993733,2cyclictest41-21ksoftirqd/322:20:003
20591993732,3cyclictest41-21ksoftirqd/323:25:113
20591993732,2cyclictest41-21ksoftirqd/319:50:013
2059199370,9cyclictest41-21ksoftirqd/300:10:003
20590993732,3cyclictest33-21ksoftirqd/222:59:592
20590993732,3cyclictest33-21ksoftirqd/221:55:002
20590993732,3cyclictest33-21ksoftirqd/220:49:592
20590993731,4cyclictest33-21ksoftirqd/221:43:302
2059099373,13cyclictest121rcu_preempt21:20:292
20590993726,9cyclictest33-21ksoftirqd/223:45:292
2058899370,23cyclictest0-21swapper/000:30:260
135191370,1getstats27893-1kworker/3:0H21:25:013
2059199366,2cyclictest121rcu_preempt21:45:173
20591993632,2cyclictest41-21ksoftirqd/323:00:003
20591993631,3cyclictest41-21ksoftirqd/322:35:173
20591993631,3cyclictest41-21ksoftirqd/321:30:123
20591993631,3cyclictest41-21ksoftirqd/320:49:593
20591993631,3cyclictest41-21ksoftirqd/319:20:113
20591993630,4cyclictest41-21ksoftirqd/323:10:563
20591993630,4cyclictest41-21ksoftirqd/322:09:353
20591993630,4cyclictest41-21ksoftirqd/319:16:333
20591993628,7cyclictest41-21ksoftirqd/321:44:223
20590993632,2cyclictest33-21ksoftirqd/200:19:592
20590993631,3cyclictest33-21ksoftirqd/223:35:132
20590993631,3cyclictest33-21ksoftirqd/223:15:132
20590993631,3cyclictest33-21ksoftirqd/219:19:592
20590993630,4cyclictest33-21ksoftirqd/223:40:122
20590993630,4cyclictest33-21ksoftirqd/222:28:192
20590993630,4cyclictest33-21ksoftirqd/222:12:382
20590993630,4cyclictest33-21ksoftirqd/221:18:432
20590993630,4cyclictest33-21ksoftirqd/220:10:082
20590993623,9cyclictest33-21ksoftirqd/219:30:182
20589993630,4cyclictest25-21ksoftirqd/123:39:111
20589993630,4cyclictest25-21ksoftirqd/123:25:031
20589993630,4cyclictest25-21ksoftirqd/120:43:451
20589993630,4cyclictest25-21ksoftirqd/120:09:461
20589993630,4cyclictest25-21ksoftirqd/119:48:321
20589993614,19cyclictest25-21ksoftirqd/123:10:001
20588993630,4cyclictest9-21ksoftirqd/019:10:590
20588993615,18cyclictest9624-21sendmail_mailst19:50:230
2058899361,21cyclictest14053-21meminfo23:15:210
2058899361,20cyclictest0-21swapper/021:35:190
138491360,0ptp4l401ktimersoftd/319:50:153
135191360,1getstats23054-1kworker/3:2H20:05:003
20591993530,3cyclictest41-21ksoftirqd/323:20:233
20591993530,3cyclictest41-21ksoftirqd/321:40:013
20591993530,3cyclictest41-21ksoftirqd/320:35:003
20591993530,3cyclictest41-21ksoftirqd/300:20:173
20591993530,3cyclictest41-21ksoftirqd/300:20:173
20591993529,4cyclictest41-21ksoftirqd/321:24:263
20591993529,4cyclictest41-21ksoftirqd/319:38:063
20591993529,4cyclictest41-21ksoftirqd/319:26:113
20590993530,3cyclictest33-21ksoftirqd/221:48:442
20590993530,3cyclictest33-21ksoftirqd/220:10:002
20590993529,4cyclictest33-21ksoftirqd/223:12:042
20590993529,4cyclictest33-21ksoftirqd/222:53:422
20590993529,3cyclictest33-21ksoftirqd/221:25:122
20590993529,3cyclictest33-21ksoftirqd/219:40:112
2059099350,2cyclictest0-21swapper/223:55:172
20589993529,4cyclictest25-21ksoftirqd/123:47:411
20589993529,4cyclictest25-21ksoftirqd/122:55:061
20589993529,4cyclictest25-21ksoftirqd/122:21:241
20589993529,4cyclictest25-21ksoftirqd/121:38:151
20589993529,4cyclictest25-21ksoftirqd/120:58:041
20589993513,19cyclictest11506-21sed23:10:181
2058899357,26cyclictest15394-21ls20:04:590
20588993530,3cyclictest9-21ksoftirqd/022:38:400
20588993529,4cyclictest9-21ksoftirqd/022:54:090
20588993529,4cyclictest9-21ksoftirqd/021:51:180
20588993529,4cyclictest9-21ksoftirqd/019:18:060
20588993517,16cyclictest9-21ksoftirqd/023:30:100
20588993511,21cyclictest2929-21seq20:44:590
20591993430,3cyclictest41-21ksoftirqd/322:14:293
20591993430,2cyclictest41-21ksoftirqd/320:00:003
20591993429,3cyclictest41-21ksoftirqd/322:45:213
20591993429,3cyclictest41-21ksoftirqd/322:02:423
20591993429,3cyclictest41-21ksoftirqd/320:40:183
20591993429,3cyclictest41-21ksoftirqd/319:42:293
20591993428,4cyclictest41-21ksoftirqd/323:31:143
20590993430,3cyclictest33-21ksoftirqd/222:15:182
20590993430,3cyclictest33-21ksoftirqd/222:04:262
20590993430,3cyclictest33-21ksoftirqd/200:30:012
20590993429,3cyclictest33-21ksoftirqd/219:10:112
20590993428,4cyclictest33-21ksoftirqd/223:33:142
20590993428,4cyclictest33-21ksoftirqd/221:36:322
20590993428,4cyclictest33-21ksoftirqd/220:42:122
20590993428,4cyclictest33-21ksoftirqd/220:27:442
20590993428,4cyclictest33-21ksoftirqd/200:03:222
20590993413,13cyclictest33-21ksoftirqd/220:30:242
20589993429,3cyclictest25-21ksoftirqd/122:29:341
20589993428,4cyclictest25-21ksoftirqd/123:41:191
20589993428,4cyclictest25-21ksoftirqd/123:01:521
20589993428,4cyclictest25-21ksoftirqd/122:34:041
20589993428,4cyclictest25-21ksoftirqd/121:48:141
20589993428,4cyclictest25-21ksoftirqd/121:33:061
20589993428,4cyclictest25-21ksoftirqd/121:23:561
20589993428,4cyclictest25-21ksoftirqd/121:07:141
20589993428,4cyclictest25-21ksoftirqd/120:33:371
20589993428,4cyclictest25-21ksoftirqd/119:41:531
20588993429,3cyclictest9-21ksoftirqd/020:15:550
20588993428,4cyclictest9-21ksoftirqd/023:59:400
20588993428,4cyclictest9-21ksoftirqd/022:40:450
20588993428,4cyclictest9-21ksoftirqd/022:31:460
20588993428,4cyclictest9-21ksoftirqd/022:11:320
20588993428,4cyclictest9-21ksoftirqd/022:01:220
20588993428,4cyclictest9-21ksoftirqd/000:17:560
20588993428,3cyclictest9-21ksoftirqd/023:28:300
20588993427,4cyclictest9-21ksoftirqd/023:21:330
20588993427,4cyclictest9-21ksoftirqd/019:43:530
20588993412,19cyclictest29453-21sed23:45:290
20588993410,21cyclictest672-21gdbus20:05:010
2058899340,3cyclictest9380-21phc2sys20:55:200
138491340,0ptp4l401ktimersoftd/300:30:323
20591993330,2cyclictest41-21ksoftirqd/322:30:123
20591993329,2cyclictest41-21ksoftirqd/323:50:013
20591993328,3cyclictest41-21ksoftirqd/322:40:243
20591993327,4cyclictest41-21ksoftirqd/323:44:223
20591993327,4cyclictest41-21ksoftirqd/321:53:343
20591993327,3cyclictest41-21ksoftirqd/323:10:003
20591993327,3cyclictest41-21ksoftirqd/300:10:133
20590993330,2cyclictest33-21ksoftirqd/223:30:012
20590993329,3cyclictest33-21ksoftirqd/219:50:262
20590993328,3cyclictest33-21ksoftirqd/223:50:132
20590993328,3cyclictest33-21ksoftirqd/221:10:122
20590993327,4cyclictest33-21ksoftirqd/222:35:532
20589993328,3cyclictest25-21ksoftirqd/122:40:111
20589993328,3cyclictest25-21ksoftirqd/121:15:121
20589993327,4cyclictest25-21ksoftirqd/123:33:571
20589993327,4cyclictest25-21ksoftirqd/120:46:121
20589993327,4cyclictest25-21ksoftirqd/120:13:431
20589993327,4cyclictest25-21ksoftirqd/119:32:071
20589993327,4cyclictest25-21ksoftirqd/100:31:011
20589993327,4cyclictest25-21ksoftirqd/100:20:431
20589993327,4cyclictest25-21ksoftirqd/100:20:431
20589993326,5cyclictest25-21ksoftirqd/122:03:551
20589993326,5cyclictest25-21ksoftirqd/100:20:001
20589993326,4cyclictest25-21ksoftirqd/120:20:091
20589993326,4cyclictest25-21ksoftirqd/100:27:211
2058999332,5cyclictest0-21swapper/122:45:111
20588993328,3cyclictest9-21ksoftirqd/022:00:000
20588993327,4cyclictest9-21ksoftirqd/021:41:110
20588993327,4cyclictest9-21ksoftirqd/021:14:150
20588993327,3cyclictest9-21ksoftirqd/023:38:040
20588993327,3cyclictest9-21ksoftirqd/023:13:160
2058899331,27cyclictest28016-21apt-get19:25:120
20588993310,20cyclictest1039-21awk21:45:160
2058899330,3cyclictest30887-21expr20:35:120
2058899330,3cyclictest18554-21hddtemp_smartct22:20:160
2058899330,3cyclictest12152-21/usr/sbin/munin21:00:250
20591993228,3cyclictest41-21ksoftirqd/320:55:163
20591993228,3cyclictest41-21ksoftirqd/320:29:083
20591993227,3cyclictest41-21ksoftirqd/323:55:013
20591993227,2cyclictest41-21ksoftirqd/300:40:003
20591993226,4cyclictest41-21ksoftirqd/322:25:013
20591993226,4cyclictest41-21ksoftirqd/320:04:023
20590993229,2cyclictest33-21ksoftirqd/200:14:592
20590993228,2cyclictest33-21ksoftirqd/219:35:172
20590993227,3cyclictest33-21ksoftirqd/222:45:182
20590993227,3cyclictest33-21ksoftirqd/220:00:002
20590993227,3cyclictest33-21ksoftirqd/219:25:122
20590993227,3cyclictest33-21ksoftirqd/200:20:112
20590993227,3cyclictest33-21ksoftirqd/200:20:112
20590993226,4cyclictest33-21ksoftirqd/221:32:552
20590993226,4cyclictest33-21ksoftirqd/221:06:192
20590993226,3cyclictest33-21ksoftirqd/221:00:122
20590993225,4cyclictest33-21ksoftirqd/220:37:232
20589993226,4cyclictest25-21ksoftirqd/122:38:451
20589993226,4cyclictest25-21ksoftirqd/120:35:181
20589993226,4cyclictest25-21ksoftirqd/100:08:271
20589993225,4cyclictest25-21ksoftirqd/123:23:581
20589993210,3cyclictest4337-21ptp4l-jitter21:50:241
2058899326,22cyclictest6349-21/usr/sbin/munin20:50:160
2058899325,24cyclictest31986-21/usr/sbin/munin22:45:240
20588993227,3cyclictest9-21ksoftirqd/022:28:210
20588993227,3cyclictest9-21ksoftirqd/019:34:420
20588993227,3cyclictest9-21ksoftirqd/000:03:440
20588993226,4cyclictest9-21ksoftirqd/021:23:300
20588993226,3cyclictest9-21ksoftirqd/023:07:450
2058899320,3cyclictest16801-21phc2sys-jitter00:25:250
2058899320,2cyclictest1906-21/usr/sbin/munin19:35:210
2059199314,2cyclictest121rcu_preempt22:50:193
20591993127,3cyclictest41-21ksoftirqd/300:00:013
20591993126,3cyclictest41-21ksoftirqd/321:10:003
20590993126,3cyclictest33-21ksoftirqd/223:03:072
20589993126,3cyclictest25-21ksoftirqd/122:53:531
20589993126,3cyclictest25-21ksoftirqd/121:01:051
20589993125,4cyclictest25-21ksoftirqd/121:58:531
20589993125,4cyclictest25-21ksoftirqd/119:56:311
20589993125,4cyclictest25-21ksoftirqd/119:39:051
20589993125,4cyclictest25-21ksoftirqd/100:03:541
20589993111,3cyclictest25881-21expr19:20:111
20589993110,18cyclictest15741-21cstates21:10:121
2058899319,19cyclictest8333-21expr00:10:130
20588993125,4cyclictest9-21ksoftirqd/022:15:570
20588993110,18cyclictest26691-21kernelversion20:25:190
2058899310,3cyclictest11032-21iostat22:05:160
2058899310,1cyclictest13025-21apt-get21:05:120
20591993025,3cyclictest41-21ksoftirqd/320:55:003
20591993025,3cyclictest41-21ksoftirqd/320:15:003
20591993018,11cyclictest41-21ksoftirqd/322:00:003
20590993025,3cyclictest33-21ksoftirqd/223:20:172
20590993025,3cyclictest33-21ksoftirqd/220:22:272
20590993024,4cyclictest33-21ksoftirqd/220:15:492
20590993018,9cyclictest33-21ksoftirqd/222:40:272
2058999309,3cyclictest22331-21wc00:35:271
2058999302,5cyclictest0-21swapper/120:00:121
2058999302,5cyclictest0-21swapper/119:25:121
20589993024,4cyclictest25-21ksoftirqd/122:13:141
20589993010,3cyclictest8678-21sh00:10:161
2058899308,19cyclictest672-21gdbus21:15:240
2058899308,19cyclictest25543-21acpi19:20:090
20588993025,3cyclictest9-21ksoftirqd/020:10:130
20588993025,3cyclictest9-21ksoftirqd/019:59:000
2058899301,26cyclictest672-21gdbus23:00:230
2058899300,2cyclictest0-21swapper/020:20:130
138491300,9ptp4l401ktimersoftd/300:00:113
20590992923,3cyclictest33-21ksoftirqd/219:50:002
20590992919,8cyclictest33-21ksoftirqd/200:05:202
2058999299,4cyclictest24310-21ptp4l21:25:231
2058999296,4cyclictest0-21swapper/119:15:161
20589992924,3cyclictest25-21ksoftirqd/120:25:101
20589992923,4cyclictest25-21ksoftirqd/122:15:421
2058899293,22cyclictest3182-21apt-get20:45:110
2058899290,2cyclictest3506-21df_inode22:55:120
138491290,0ptp4l401ktimersoftd/321:19:303
20590992822,3cyclictest33-21ksoftirqd/222:30:072
2058999288,3cyclictest21372-21idleruntime20:15:181
2058999287,4cyclictest14167-21netstat23:15:221
2058999282,5cyclictest0-21swapper/122:05:111
20589992823,3cyclictest25-21ksoftirqd/119:12:011
20589992720,4cyclictest25-21ksoftirqd/121:45:001
2058899271,23cyclictest28598-21diskstats20:30:130
20589992620,3cyclictest25-21ksoftirqd/123:55:361
2058999257,3cyclictest31841-21sendmail_mailst23:50:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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