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2026-08-22 - 21:12
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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 rackdslot3.osadl.org (updated Sat Aug 22, 2026 12:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491206171,23phc2sys0-21swapper/307:06:043
40522203169,23sleep20-21swapper/207:08:022
40552201168,22sleep00-21swapper/007:08:040
38962201168,22sleep10-21swapper/107:06:001
331221320,2sleep10-21swapper/111:35:221
1394918263,10phc2sys0-21swapper/307:10:003
450599570,11cyclictest6697-21grep10:35:190
153252570,3sleep00-21swapper/012:00:200
286292550,5sleep1450699cyclictest12:30:131
134391550,2getstats0-21swapper/308:34:593
450599534,11cyclictest19239-21cat09:55:010
450599520,11cyclictest11216-21cat11:50:260
4507995043,4cyclictest3481-21sh08:15:012
450599507,9cyclictest14728-21timerandwakeup10:50:260
226192500,4sleep20-21swapper/208:55:002
450599498,8cyclictest17968-21apt-get11:00:110
450599490,9cyclictest7009-21grep07:15:130
450599490,11cyclictest18111-21cpuspeed08:45:120
281812490,1sleep228182-21irqrtprio09:05:192
450599468,16cyclictest22761-21/usr/sbin/munin08:55:270
450599465,15cyclictest29037-21timerandwakeup09:05:270
450599460,9cyclictest0-21swapper/010:25:270
450599460,9cyclictest0-21swapper/010:25:260
450899458,22cyclictest32396-21cstates11:30:153
450599450,9cyclictest0-21swapper/008:05:280
450599450,7cyclictest14663-21apt-get09:45:120
450599450,15cyclictest23998-21apt-get07:50:120
139391450,24ptp4l450899cyclictest12:38:223
450599440,7cyclictest22700-21apt-get11:10:110
139391440,0ptp4l401ktimersoftd/310:50:403
450599430,8cyclictest22887-21python12:15:240
450599430,8cyclictest20727-21diskstats11:05:160
450599430,11cyclictest1058-21processes11:30:240
450599420,14cyclictest6105-21sensors_temp09:25:270
450599420,12cyclictest16504-21grep07:35:130
139391420,0ptp4l401ktimersoftd/311:40:023
139391420,0ptp4l401ktimersoftd/308:03:273
450599410,7cyclictest8275-21memory11:45:210
139391410,0ptp4l401ktimersoftd/308:20:123
4506994012,27cyclictest0-21swapper/108:53:331
450599400,7cyclictest9577-21gpgv09:35:010
450599400,7cyclictest26515-21apt-get10:10:110
450599400,7cyclictest25244-21ls10:05:210
4505993932,4cyclictest9-21ksoftirqd/009:00:590
450599390,7cyclictest7565-21hddtemp_smartct09:30:170
4507993832,3cyclictest33-21ksoftirqd/208:25:282
4506993819,4cyclictest3483-21dump-pmu-power08:15:011
450599381,14cyclictest2518-21gnome-shell11:40:580
450599380,7cyclictest11882-21meminfo10:45:210
450599380,14cyclictest2518-21gnome-shell08:42:580
139391380,0ptp4l401ktimersoftd/309:17:413
4508993732,3cyclictest27278-21cron09:05:003
4508993731,4cyclictest41-21ksoftirqd/311:17:393
4508993731,3cyclictest41-21ksoftirqd/311:10:103
4508993715,19cyclictest20394-21/usr/sbin/munin08:50:223
4507993731,3cyclictest33-21ksoftirqd/210:20:102
4506993731,4cyclictest25-21ksoftirqd/108:27:261
4506993727,8cyclictest25-21ksoftirqd/109:50:001
450699370,1cyclictest0-21swapper/108:00:331
450599370,8cyclictest9574-21meminfo08:25:220
450599370,8cyclictest13012-21memory11:55:210
4508993630,4cyclictest41-21ksoftirqd/310:13:593
4507993630,4cyclictest33-21ksoftirqd/211:56:132
4507993630,4cyclictest33-21ksoftirqd/211:20:062
4507993630,4cyclictest33-21ksoftirqd/210:11:022
4507993630,4cyclictest33-21ksoftirqd/208:00:322
4507993630,3cyclictest33-21ksoftirqd/207:50:002
4506993630,4cyclictest25-21ksoftirqd/111:52:511
4506993630,4cyclictest25-21ksoftirqd/110:14:181
4506993629,4cyclictest25-21ksoftirqd/109:12:241
450699360,35cyclictest0-21swapper/107:25:231
450599360,7cyclictest29403-21iostat_ios08:00:190
450599360,7cyclictest17385-21iostat12:05:190
450599360,10cyclictest3916-21timerwakeupswit09:20:270
254362360,1sleep10-21swapper/111:15:161
4508993529,4cyclictest41-21ksoftirqd/310:55:363
4508993529,4cyclictest41-21ksoftirqd/310:55:363
4508993529,4cyclictest41-21ksoftirqd/308:47:273
450899350,3cyclictest28030-21perl09:05:173
450899350,3cyclictest20132-21awk07:40:253
450899350,3cyclictest19294-21ls09:55:013
4507993530,3cyclictest33-21ksoftirqd/211:13:052
4507993529,4cyclictest33-21ksoftirqd/210:16:512
4507993529,4cyclictest33-21ksoftirqd/208:57:452
4507993528,5cyclictest33-21ksoftirqd/209:18:392
4507993523,10cyclictest33-21ksoftirqd/212:20:242
450699357,27cyclictest0-21swapper/109:02:431
4506993529,4cyclictest25-21ksoftirqd/112:29:291
4506993529,4cyclictest25-21ksoftirqd/111:23:501
4506993529,4cyclictest25-21ksoftirqd/111:09:531
4506993529,4cyclictest25-21ksoftirqd/107:53:011
4506993528,4cyclictest25-21ksoftirqd/110:40:011
450599350,7cyclictest8982-21perl10:40:170
450599350,7cyclictest25356-21df11:15:150
4508993429,3cyclictest41-21ksoftirqd/310:17:013
4508993428,4cyclictest41-21ksoftirqd/311:38:453
4508993428,4cyclictest41-21ksoftirqd/310:05:383
4508993428,4cyclictest41-21ksoftirqd/309:11:423
4508993428,4cyclictest41-21ksoftirqd/308:27:573
4508993428,4cyclictest41-21ksoftirqd/307:39:473
4508993428,4cyclictest41-21ksoftirqd/307:28:323
4508993427,4cyclictest41-21ksoftirqd/307:59:593
450899340,4cyclictest4317-21if_enp4s008:15:173
450899340,4cyclictest14371-21apt-get12:00:123
4507993429,3cyclictest33-21ksoftirqd/209:35:002
4507993429,3cyclictest33-21ksoftirqd/207:45:002
4507993429,3cyclictest33-21ksoftirqd/207:37:252
4507993429,3cyclictest33-21ksoftirqd/207:25:102
4507993429,3cyclictest33-21ksoftirqd/207:14:472
4507993428,4cyclictest33-21ksoftirqd/212:31:552
4507993428,4cyclictest33-21ksoftirqd/211:40:432
4507993428,4cyclictest33-21ksoftirqd/210:42:552
4507993428,4cyclictest33-21ksoftirqd/209:45:112
4507993428,4cyclictest33-21ksoftirqd/207:23:342
4506993429,3cyclictest25-21ksoftirqd/109:20:121
4506993429,3cyclictest25-21ksoftirqd/107:25:001
4506993428,4cyclictest25-21ksoftirqd/111:02:121
4506993428,4cyclictest25-21ksoftirqd/108:42:321
4506993428,4cyclictest25-21ksoftirqd/107:35:081
4506993428,4cyclictest25-21ksoftirqd/107:31:431
4506993428,4cyclictest25-21ksoftirqd/107:16:511
450699340,1cyclictest0-21swapper/107:45:131
450599348,14cyclictest2998-21ls08:10:250
450599341,21cyclictest0-21swapper/010:30:130
450599340,8cyclictest19107-21apt-get12:10:130
450599340,7cyclictest26517-21df12:25:150
450599340,17cyclictest30328-21perl11:25:170
57898330,2rtkit-daemon0-21swapper/110:45:061
450899339,21cyclictest6025-21/usr/sbin/munin10:35:253
4508993328,3cyclictest41-21ksoftirqd/309:58:243
4508993328,3cyclictest41-21ksoftirqd/309:43:033
4508993327,4cyclictest41-21ksoftirqd/311:52:213
4508993327,4cyclictest41-21ksoftirqd/307:16:043
4508993311,19cyclictest11000-21tail07:20:283
4508993310,21cyclictest22960-21timerandwakeup07:45:253
4508993310,20cyclictest30851-21cut12:35:003
4508993310,20cyclictest14276-21cat12:00:003
450899330,3cyclictest5948-21cat10:35:003
450899330,3cyclictest573-21awk08:05:293
450899330,3cyclictest10530-21chrt10:44:133
4507993328,3cyclictest31348-21wc08:05:152
4507993327,4cyclictest33-21ksoftirqd/212:14:252
4507993327,4cyclictest33-21ksoftirqd/210:06:252
4507993327,4cyclictest33-21ksoftirqd/210:04:082
4507993327,4cyclictest33-21ksoftirqd/209:01:302
4507993327,4cyclictest33-21ksoftirqd/208:43:402
4506993328,3cyclictest25-21ksoftirqd/109:55:351
4506993327,4cyclictest25-21ksoftirqd/111:32:051
4506993327,4cyclictest25-21ksoftirqd/110:29:271
4506993327,4cyclictest25-21ksoftirqd/110:29:271
4506993327,4cyclictest25-21ksoftirqd/109:54:331
4506993327,4cyclictest25-21ksoftirqd/109:42:211
4506993326,5cyclictest25-21ksoftirqd/110:33:071
4506993326,4cyclictest25-21ksoftirqd/110:18:071
4506993319,12cyclictest0-21swapper/109:05:031
4505993328,3cyclictest9-21ksoftirqd/007:25:100
450899328,21cyclictest29672-21sed11:25:003
450899327,22cyclictest1300-21snmpd10:48:003
4508993226,4cyclictest41-21ksoftirqd/310:25:483
4508993226,4cyclictest41-21ksoftirqd/310:25:473
4508993211,18cyclictest31542-21cat10:20:133
450899320,3cyclictest8632-21mailstats11:45:253
450899320,3cyclictest5609-21cut09:25:203
450899320,3cyclictest3341-21meminfo09:20:213
450899320,3cyclictest22500-21memory12:15:213
450899320,3cyclictest1887-21if_enp4s008:10:173
450899320,2cyclictest9955-21cstates09:35:133
450899320,2cyclictest20341-21apt-get11:05:133
4507993227,3cyclictest33-21ksoftirqd/212:17:162
4507993227,3cyclictest33-21ksoftirqd/209:55:342
4507993226,4cyclictest33-21ksoftirqd/212:01:542
4507993226,4cyclictest33-21ksoftirqd/211:39:312
4507993226,4cyclictest33-21ksoftirqd/211:06:592
4507993226,4cyclictest33-21ksoftirqd/211:02:122
4507993226,4cyclictest33-21ksoftirqd/210:31:562
4507993226,4cyclictest33-21ksoftirqd/208:21:142
4507993226,4cyclictest33-21ksoftirqd/207:53:342
4506993227,3cyclictest25-21ksoftirqd/109:39:511
4506993227,3cyclictest25-21ksoftirqd/109:29:351
4506993226,4cyclictest25-21ksoftirqd/110:52:371
4506993226,4cyclictest25-21ksoftirqd/108:30:441
4506993226,4cyclictest25-21ksoftirqd/107:41:301
4505993226,4cyclictest9-21ksoftirqd/009:57:000
4505993226,4cyclictest9-21ksoftirqd/007:23:360
450899317,21cyclictest15257-21cat09:45:183
450899316,22cyclictest9231-21idleruntime-cro09:35:003
4508993126,3cyclictest41-21ksoftirqd/308:56:413
4508993110,18cyclictest1317-21runrttasks12:30:003
450899310,3cyclictest31615-21taskset11:25:493
450899310,3cyclictest0-21swapper/307:50:003
4507993126,3cyclictest33-21ksoftirqd/210:26:212
4507993126,3cyclictest33-21ksoftirqd/210:26:212
4507993126,3cyclictest33-21ksoftirqd/209:11:292
4507993125,4cyclictest33-21ksoftirqd/211:49:342
4506993125,4cyclictest25-21ksoftirqd/112:06:181
4506993125,4cyclictest25-21ksoftirqd/111:44:321
4506993125,4cyclictest25-21ksoftirqd/110:59:111
4506993125,4cyclictest25-21ksoftirqd/110:59:111
4505993125,4cyclictest9-21ksoftirqd/012:24:380
4505993125,4cyclictest9-21ksoftirqd/010:16:530
4505993124,4cyclictest9-21ksoftirqd/008:50:120
450899308,20cyclictest14072-21/usr/sbin/munin07:30:283
450899307,20cyclictest14820-21timerandwakeup08:35:273
450899306,21cyclictest25375-21wc12:20:273
4508993025,3cyclictest41-21ksoftirqd/312:09:343
4508993024,4cyclictest41-21ksoftirqd/312:14:353
4508993024,4cyclictest41-21ksoftirqd/308:44:343
4508993023,4cyclictest41-21ksoftirqd/310:00:593
4507993025,3cyclictest33-21ksoftirqd/211:30:192
4507993025,3cyclictest33-21ksoftirqd/210:35:562
4507993025,3cyclictest33-21ksoftirqd/209:52:072
4507993025,3cyclictest33-21ksoftirqd/208:45:102
4507993024,4cyclictest33-21ksoftirqd/209:39:372
4507993024,4cyclictest33-21ksoftirqd/208:32:302
4507993023,5cyclictest33-21ksoftirqd/211:51:222
4507993018,9cyclictest33-21ksoftirqd/209:40:142
4507993017,10cyclictest33-21ksoftirqd/207:55:192
4506993025,3cyclictest25-21ksoftirqd/112:23:301
4506993024,4cyclictest25-21ksoftirqd/109:16:171
4506993024,4cyclictest25-21ksoftirqd/108:38:381
4506993024,4cyclictest25-21ksoftirqd/108:16:041
4506993024,4cyclictest25-21ksoftirqd/107:13:581
4505993025,3cyclictest9-21ksoftirqd/010:24:590
4505993025,3cyclictest9-21ksoftirqd/009:15:110
4505993024,4cyclictest9-21ksoftirqd/007:44:180
4505993024,4cyclictest9-21ksoftirqd/007:14:050
4505993023,5cyclictest9-21ksoftirqd/012:33:420
450599300,8cyclictest14588-21hddtemp_smartct07:30:170
4507992924,3cyclictest33-21ksoftirqd/212:28:252
4507992924,3cyclictest33-21ksoftirqd/208:38:272
4507992923,4cyclictest33-21ksoftirqd/210:54:062
4507992920,8cyclictest33-21ksoftirqd/210:55:132
4507992920,8cyclictest33-21ksoftirqd/210:55:132
4507992918,9cyclictest33-21ksoftirqd/212:35:262
4506992924,3cyclictest25-21ksoftirqd/110:03:171
4506992924,3cyclictest25-21ksoftirqd/108:55:491
4506992923,4cyclictest25-21ksoftirqd/112:01:121
4506992923,4cyclictest25-21ksoftirqd/110:40:121
4506992923,4cyclictest25-21ksoftirqd/108:09:541
450699290,2cyclictest0-21swapper/107:59:251
4505992923,4cyclictest9-21ksoftirqd/008:24:330
4507992823,3cyclictest33-21ksoftirqd/212:05:112
4507992823,3cyclictest33-21ksoftirqd/211:17:182
4507992822,4cyclictest33-21ksoftirqd/211:26:072
4506992823,3cyclictest25-21ksoftirqd/112:38:211
4506992822,4cyclictest25-21ksoftirqd/112:18:421
4506992822,4cyclictest25-21ksoftirqd/112:13:091
4506992822,4cyclictest25-21ksoftirqd/108:47:131
4506992820,5cyclictest25-21ksoftirqd/111:30:001
4505992822,4cyclictest9-21ksoftirqd/008:31:110
450899275,19cyclictest18816-21irqrtprio11:00:193
4507992721,4cyclictest33-21ksoftirqd/209:29:542
4505992721,4cyclictest9-21ksoftirqd/009:41:000
4505992721,4cyclictest9-21ksoftirqd/009:10:540
450599270,2cyclictest121rcu_preempt07:56:340
4507992621,3cyclictest33-21ksoftirqd/210:46:142
4507992621,3cyclictest33-21ksoftirqd/209:21:392
4507992621,3cyclictest33-21ksoftirqd/208:18:362
4506992621,3cyclictest25-21ksoftirqd/110:08:361
4505992620,4cyclictest9-21ksoftirqd/011:20:320
4505992620,4cyclictest9-21ksoftirqd/010:04:060
4506992520,3cyclictest25-21ksoftirqd/111:45:081
4506992519,4cyclictest25-21ksoftirqd/110:23:531
4506992519,4cyclictest25-21ksoftirqd/109:34:501
4505992519,4cyclictest9-21ksoftirqd/011:39:370
4505992519,4cyclictest9-21ksoftirqd/010:58:010
4505992519,4cyclictest9-21ksoftirqd/010:58:010
4507992419,3cyclictest33-21ksoftirqd/207:19:212
4506992317,4cyclictest25-21ksoftirqd/108:20:451
4505992318,3cyclictest9-21ksoftirqd/008:15:170
4505992318,3cyclictest9-21ksoftirqd/007:49:470
4507992217,3cyclictest33-21ksoftirqd/207:30:212
4506992217,3cyclictest25-21ksoftirqd/111:10:191
4505992217,3cyclictest9-21ksoftirqd/008:35:210
4505992213,6cyclictest32479-21grep12:35:270
4506991914,3cyclictest12643-21irqrtprio11:55:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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