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2026-08-10 - 19:24
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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 highest latencies:
System rackdslot4.osadl.org (updated Mon Aug 10, 2026 12:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10412226163,52sleep20-21swapper/207:05:402
138591202168,23phc2sys0-21swapper/307:09:323
13952199166,22sleep10-21swapper/107:09:571
11322196163,22sleep00-21swapper/007:06:500
138591161121,14phc2sys0-21swapper/307:10:013
169799635,17cyclictest0-21swapper/012:25:280
169799595,16cyclictest0-21swapper/011:15:140
169799595,15cyclictest0-21swapper/008:15:180
169799565,9cyclictest0-21swapper/012:10:250
169799565,9cyclictest0-21swapper/012:10:250
138491560,1ptp4l401ktimersoftd/309:31:243
169799559,16cyclictest16471-21cat08:45:130
169799558,17cyclictest24030-21cstates12:15:110
169799549,16cyclictest26133-21grep10:10:130
169799544,15cyclictest0-21swapper/009:30:240
138491540,1ptp4l401ktimersoftd/310:36:313
138491530,1ptp4l401ktimersoftd/310:32:583
138491530,1ptp4l401ktimersoftd/309:43:183
169799528,15cyclictest6270-21latency_hist08:25:000
169799528,15cyclictest6270-21latency_hist08:25:000
162962520,2sleep00-21swapper/009:50:140
169799519,8cyclictest4702-21diskstats07:15:140
1697995110,8cyclictest32011-21iostat_ios09:15:190
19562500,2sleep30-21swapper/309:20:163
169799509,8cyclictest21171-21apt10:00:110
169799509,14cyclictest2880-21load07:10:190
169799507,7cyclictest12957-21ls10:45:270
169799506,7cyclictest21336-21apt-get11:05:110
169799505,16cyclictest0-21swapper/012:05:150
169799504,15cyclictest0-21swapper/007:35:190
1697995010,7cyclictest24279-21fw_packets09:00:170
169799499,8cyclictest9686-21irqstats11:45:180
169799499,8cyclictest7442-21iostat_ios07:20:180
169799499,11cyclictest2528-21phc2sys-jitter12:35:220
169799498,8cyclictest4976-21ls09:25:190
169799498,8cyclictest17155-21hwlatdetect07:40:170
169799498,7cyclictest18696-21apt-get09:55:130
169799497,8cyclictest17864-21ls10:55:270
169799497,7cyclictest15395-21ls08:40:260
1697994910,7cyclictest27289-21meminfo12:20:200
169799488,7cyclictest16748-21if_enp4s012:00:180
169799487,7cyclictest29708-21ls10:15:210
169799487,17cyclictest19179-21grep07:45:100
1697994810,6cyclictest19604-21iostat11:00:190
169799479,7cyclictest26918-21df_inode08:00:150
169799479,7cyclictest19236-21diskstats08:50:160
169799479,7cyclictest12356-21iostat_ios07:30:170
169799478,8cyclictest402-21sshd10:20:310
169799478,7cyclictest32093-21iostat08:10:180
169799477,7cyclictest15327-21ls11:55:270
169799477,7cyclictest1263-21apt-get10:25:120
169799469,8cyclictest12063-21iostat_ios08:35:190
169799458,7cyclictest24246-21df_inode11:10:130
169799448,8cyclictest4861-21meminfo11:35:200
169799446,7cyclictest14788-21meminfo10:50:210
138491440,0ptp4l401ktimersoftd/311:04:563
169799439,10cyclictest12225-21sed11:50:200
169799438,7cyclictest14364-21if_enp1s009:45:170
169799434,16cyclictest0-21swapper/011:25:160
246642420,4sleep124668-21irqrtprio12:15:171
138491420,0ptp4l401ktimersoftd/309:14:563
1699994124,4cyclictest33-21ksoftirqd/209:40:252
169799416,8cyclictest22330-21ls08:55:230
169799407,6cyclictest24091-21diskstats10:05:140
138491400,1ptp4l401ktimersoftd/308:00:113
1699993935,2cyclictest33-21ksoftirqd/209:19:592
1697993933,3cyclictest31101-21acpi12:30:130
138591382,6phc2sys121rcu_preempt09:55:173
138491380,0ptp4l401ktimersoftd/312:15:013
138491380,0ptp4l401ktimersoftd/312:15:013
138491380,0ptp4l401ktimersoftd/311:10:153
1700993720,15cyclictest41-21ksoftirqd/309:05:013
1699993731,4cyclictest33-21ksoftirqd/211:07:532
1699993731,4cyclictest33-21ksoftirqd/210:56:512
1699993730,5cyclictest33-21ksoftirqd/207:48:522
1700993631,3cyclictest41-21ksoftirqd/309:17:153
1700993630,4cyclictest41-21ksoftirqd/311:20:003
1700993630,4cyclictest41-21ksoftirqd/307:29:443
1700993629,5cyclictest41-21ksoftirqd/308:52:353
1699993631,3cyclictest33-21ksoftirqd/212:00:002
1699993631,3cyclictest33-21ksoftirqd/208:32:442
1699993630,4cyclictest33-21ksoftirqd/212:31:592
1699993630,4cyclictest33-21ksoftirqd/210:04:312
1699993630,4cyclictest33-21ksoftirqd/208:54:202
1698993631,3cyclictest25-21ksoftirqd/108:30:151
1698993630,4cyclictest25-21ksoftirqd/112:07:271
1698993630,4cyclictest25-21ksoftirqd/108:39:221
1698993630,4cyclictest25-21ksoftirqd/107:53:211
1698993629,5cyclictest25-21ksoftirqd/110:02:501
169799367,13cyclictest8767-21sshd09:35:010
1700993530,3cyclictest41-21ksoftirqd/311:40:193
1700993530,3cyclictest41-21ksoftirqd/309:07:453
1700993530,3cyclictest41-21ksoftirqd/308:41:573
1700993529,4cyclictest41-21ksoftirqd/312:29:023
1700993529,4cyclictest41-21ksoftirqd/312:22:003
1700993529,4cyclictest41-21ksoftirqd/311:25:353
1700993529,4cyclictest41-21ksoftirqd/310:11:593
1700993529,4cyclictest41-21ksoftirqd/309:47:083
1700993522,11cyclictest41-21ksoftirqd/311:00:013
1699993530,3cyclictest33-21ksoftirqd/210:07:572
1699993529,4cyclictest33-21ksoftirqd/212:36:362
1699993529,4cyclictest33-21ksoftirqd/211:48:572
1699993529,4cyclictest33-21ksoftirqd/210:46:402
1699993529,4cyclictest33-21ksoftirqd/210:38:382
1699993529,4cyclictest33-21ksoftirqd/208:42:562
1699993529,4cyclictest33-21ksoftirqd/208:10:022
1699993529,4cyclictest33-21ksoftirqd/207:37:572
1699993529,4cyclictest33-21ksoftirqd/207:15:512
1699993529,4cyclictest33-21ksoftirqd/207:12:502
1698993530,3cyclictest25-21ksoftirqd/109:20:111
1698993529,4cyclictest25-21ksoftirqd/111:00:391
1698993529,4cyclictest25-21ksoftirqd/110:55:381
1698993529,4cyclictest25-21ksoftirqd/108:56:191
1698993528,5cyclictest25-21ksoftirqd/109:45:371
1698993528,5cyclictest25-21ksoftirqd/108:26:461
169799355,7cyclictest24707-21iostat_ios07:55:150
1697993529,4cyclictest9-21ksoftirqd/009:09:300
1700993429,3cyclictest41-21ksoftirqd/308:35:563
1700993429,3cyclictest41-21ksoftirqd/307:59:293
1700993428,4cyclictest41-21ksoftirqd/312:39:373
1700993428,4cyclictest41-21ksoftirqd/312:03:153
1700993428,4cyclictest41-21ksoftirqd/311:51:323
1700993428,4cyclictest41-21ksoftirqd/307:42:443
1700993421,11cyclictest41-21ksoftirqd/308:49:593
1699993429,3cyclictest33-21ksoftirqd/209:33:432
1699993429,3cyclictest33-21ksoftirqd/209:20:112
1699993429,3cyclictest33-21ksoftirqd/209:14:482
1699993428,4cyclictest33-21ksoftirqd/212:12:042
1699993428,4cyclictest33-21ksoftirqd/212:12:042
1699993428,4cyclictest33-21ksoftirqd/211:33:542
1699993428,4cyclictest33-21ksoftirqd/210:51:092
1699993427,5cyclictest33-21ksoftirqd/211:03:202
1698993429,3cyclictest25-21ksoftirqd/110:29:361
1698993429,3cyclictest25-21ksoftirqd/107:14:531
1698993428,4cyclictest25-21ksoftirqd/112:32:371
1698993428,4cyclictest25-21ksoftirqd/112:28:561
1698993428,4cyclictest25-21ksoftirqd/111:20:321
1698993428,4cyclictest25-21ksoftirqd/110:52:211
1698993428,4cyclictest25-21ksoftirqd/110:23:271
1698993428,4cyclictest25-21ksoftirqd/110:13:211
1698993428,4cyclictest25-21ksoftirqd/109:58:211
1698993428,4cyclictest25-21ksoftirqd/108:54:131
1698993428,4cyclictest25-21ksoftirqd/107:21:231
1698993428,4cyclictest25-21ksoftirqd/107:15:501
1697993428,4cyclictest9-21ksoftirqd/011:32:110
1700993328,3cyclictest41-21ksoftirqd/310:07:473
1700993328,3cyclictest41-21ksoftirqd/308:29:023
1700993327,4cyclictest41-21ksoftirqd/310:41:193
1700993327,4cyclictest41-21ksoftirqd/310:15:323
1700993327,4cyclictest41-21ksoftirqd/308:32:373
1700993327,4cyclictest41-21ksoftirqd/307:17:233
1700993326,5cyclictest41-21ksoftirqd/310:26:063
1699993328,3cyclictest33-21ksoftirqd/212:02:142
1699993328,3cyclictest33-21ksoftirqd/211:28:082
1699993328,3cyclictest33-21ksoftirqd/210:41:332
1699993328,3cyclictest33-21ksoftirqd/210:18:382
1699993328,3cyclictest33-21ksoftirqd/209:55:132
1699993328,3cyclictest33-21ksoftirqd/208:56:022
1699993328,3cyclictest33-21ksoftirqd/208:35:112
1699993328,3cyclictest33-21ksoftirqd/207:42:282
1699993327,4cyclictest33-21ksoftirqd/212:25:332
1699993327,4cyclictest33-21ksoftirqd/212:05:102
1699993327,4cyclictest33-21ksoftirqd/207:21:202
1698993329,3cyclictest25-21ksoftirqd/111:29:361
1698993329,3cyclictest25-21ksoftirqd/111:08:351
1698993327,4cyclictest25-21ksoftirqd/111:36:211
1698993327,4cyclictest25-21ksoftirqd/110:16:101
1698993327,4cyclictest25-21ksoftirqd/110:06:351
1698993327,4cyclictest25-21ksoftirqd/109:11:471
1698993327,4cyclictest25-21ksoftirqd/107:29:181
1698993325,5cyclictest25-21ksoftirqd/108:25:001
1698993325,5cyclictest25-21ksoftirqd/108:25:001
1698993310,3cyclictest1990-21fschecks_time08:15:141
169799334,17cyclictest0-21swapper/008:25:110
1697993327,4cyclictest9-21ksoftirqd/010:40:440
1700993227,3cyclictest41-21ksoftirqd/310:53:233
1700993226,4cyclictest41-21ksoftirqd/312:19:003
1700993226,4cyclictest41-21ksoftirqd/309:26:263
1700993226,3cyclictest41-21ksoftirqd/308:55:213
1699993228,3cyclictest33-21ksoftirqd/212:20:422
1699993227,3cyclictest33-21ksoftirqd/211:21:122
1699993227,3cyclictest33-21ksoftirqd/209:03:272
1699993227,3cyclictest33-21ksoftirqd/208:46:032
1699993227,3cyclictest33-21ksoftirqd/207:52:452
1699993226,4cyclictest33-21ksoftirqd/210:31:162
1699993226,4cyclictest33-21ksoftirqd/210:12:382
1699993226,4cyclictest33-21ksoftirqd/209:38:362
1698993227,3cyclictest25-21ksoftirqd/108:00:501
1698993226,4cyclictest25-21ksoftirqd/112:35:421
1698993226,4cyclictest25-21ksoftirqd/111:18:391
1698993226,4cyclictest25-21ksoftirqd/109:17:491
1698993225,5cyclictest25-21ksoftirqd/109:51:071
1698993225,5cyclictest25-21ksoftirqd/107:49:481
1698993211,3cyclictest14037-21expr08:40:141
1698993211,3cyclictest11903-21cat10:45:181
169799323,18cyclictest0-21swapper/007:25:140
1697993226,4cyclictest9-21ksoftirqd/010:38:560
138491320,0ptp4l401ktimersoftd/308:05:223
1700993126,3cyclictest41-21ksoftirqd/310:03:353
1700993126,3cyclictest41-21ksoftirqd/307:45:103
1700993126,3cyclictest41-21ksoftirqd/307:38:533
1700993125,4cyclictest41-21ksoftirqd/311:37:043
1700993125,4cyclictest41-21ksoftirqd/311:21:143
1700993125,4cyclictest41-21ksoftirqd/307:32:323
1699993126,3cyclictest33-21ksoftirqd/210:27:362
1699993126,3cyclictest33-21ksoftirqd/208:25:282
1699993125,4cyclictest33-21ksoftirqd/211:38:142
1699993125,4cyclictest33-21ksoftirqd/209:27:532
1699993125,4cyclictest33-21ksoftirqd/208:01:362
1699993125,4cyclictest33-21ksoftirqd/207:56:022
1699993120,9cyclictest33-21ksoftirqd/207:30:262
169899317,4cyclictest0-21swapper/108:10:201
1698993126,3cyclictest25-21ksoftirqd/112:14:241
1698993126,3cyclictest25-21ksoftirqd/112:14:241
1698993126,3cyclictest25-21ksoftirqd/112:02:101
1698993126,3cyclictest25-21ksoftirqd/109:26:151
1698993125,4cyclictest25-21ksoftirqd/111:45:361
1698993125,4cyclictest25-21ksoftirqd/111:43:071
1698993125,4cyclictest25-21ksoftirqd/110:43:011
1698993125,4cyclictest25-21ksoftirqd/110:38:121
1698993125,4cyclictest25-21ksoftirqd/107:30:581
1698993124,5cyclictest25-21ksoftirqd/112:24:321
1698993112,3cyclictest29700-21sed08:05:201
169799319,8cyclictest7731-21sensors_temp11:40:240
169799315,16cyclictest0-21swapper/009:40:170
1697993126,3cyclictest9-21ksoftirqd/011:25:010
138491310,0ptp4l401ktimersoftd/311:45:063
1700993025,3cyclictest41-21ksoftirqd/310:49:553
1700993025,3cyclictest41-21ksoftirqd/309:53:553
1700993025,3cyclictest41-21ksoftirqd/308:17:403
1700993024,4cyclictest41-21ksoftirqd/312:09:333
1699993025,3cyclictest33-21ksoftirqd/211:16:012
1699993025,3cyclictest33-21ksoftirqd/208:15:502
1698993025,3cyclictest25-21ksoftirqd/109:05:141
1698993024,4cyclictest25-21ksoftirqd/109:44:361
169799305,16cyclictest0-21swapper/008:30:220
1697993024,4cyclictest9-21ksoftirqd/009:21:450
1700992924,3cyclictest41-21ksoftirqd/311:56:213
1700992924,3cyclictest41-21ksoftirqd/311:05:113
1700992924,3cyclictest41-21ksoftirqd/308:15:003
1699992924,3cyclictest33-21ksoftirqd/211:51:322
1699992924,3cyclictest33-21ksoftirqd/210:25:012
1699992924,3cyclictest33-21ksoftirqd/208:23:282
1699992924,3cyclictest33-21ksoftirqd/208:23:282
1698992924,3cyclictest25-21ksoftirqd/111:52:291
1698992924,3cyclictest25-21ksoftirqd/110:30:101
1698992924,3cyclictest25-21ksoftirqd/109:01:391
1698992924,3cyclictest25-21ksoftirqd/107:40:481
1698992924,3cyclictest25-21ksoftirqd/107:35:111
1698992923,4cyclictest25-21ksoftirqd/108:48:091
169799298,7cyclictest22253-21iostat_ios07:50:180
169799294,16cyclictest0-21swapper/009:10:180
138491290,0ptp4l401ktimersoftd/312:32:523
138491290,0ptp4l401ktimersoftd/309:39:323
1700992823,3cyclictest41-21ksoftirqd/311:35:003
1700992823,3cyclictest41-21ksoftirqd/308:23:023
1700992823,3cyclictest41-21ksoftirqd/308:23:023
1700992823,3cyclictest41-21ksoftirqd/307:20:133
1699992823,3cyclictest33-21ksoftirqd/211:10:332
1699992823,3cyclictest33-21ksoftirqd/208:05:132
1699992822,4cyclictest33-21ksoftirqd/207:27:342
1698992823,3cyclictest25-21ksoftirqd/111:57:021
1698992810,3cyclictest24844-21latency11:10:181
169799289,6cyclictest29283-21df08:05:150
169799284,10cyclictest0-21swapper/010:30:190
1699992723,3cyclictest33-21ksoftirqd/211:44:542
1699992721,4cyclictest33-21ksoftirqd/209:51:482
1699992721,4cyclictest33-21ksoftirqd/209:46:352
1698992721,4cyclictest25-21ksoftirqd/109:31:341
1699992621,3cyclictest33-21ksoftirqd/209:05:002
1698992620,4cyclictest25-21ksoftirqd/107:59:341
1699992521,3cyclictest33-21ksoftirqd/212:15:002
1698992520,3cyclictest25-21ksoftirqd/111:31:251
138491250,0ptp4l401ktimersoftd/307:54:043
1700992418,4cyclictest41-21ksoftirqd/310:25:003
1698991914,3cyclictest9349-21fschecks_time09:35:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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