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2025-12-24 - 23:24
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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 792 highest latencies:
System rackdslot4.osadl.org (updated Wed Dec 24, 2025 12:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74682222157,21sleep00-21swapper/007:06:140
138591205171,23phc2sys0-21swapper/307:06:403
76962202168,22sleep20-21swapper/207:09:142
55392195162,22sleep10-21swapper/107:05:031
1088021710,7sleep2823799cyclictest08:20:132
2410421350,3sleep2823799cyclictest08:45:212
823799631,3cyclictest5072-21taskset12:27:452
119022630,6sleep3823899cyclictest08:20:223
268742570,2sleep30-21swapper/308:50:233
195952570,3sleep219600-21unixbench_multi08:35:262
98232560,2sleep20-21swapper/209:20:272
138491460,0ptp4l401ktimersoftd/312:20:063
138491450,0ptp4l401ktimersoftd/311:25:063
138491440,1ptp4l0-21swapper/308:40:393
138491440,0ptp4l401ktimersoftd/311:10:303
8233994337,3cyclictest9-21ksoftirqd/011:00:000
138491430,0ptp4l401ktimersoftd/310:26:313
138491430,0ptp4l401ktimersoftd/310:16:173
138491430,0ptp4l401ktimersoftd/310:16:173
8233994236,3cyclictest9-21ksoftirqd/012:00:010
138491420,0ptp4l401ktimersoftd/309:09:183
8233994136,2cyclictest9-21ksoftirqd/008:15:000
138491410,1ptp4l401ktimersoftd/308:35:203
138491410,0ptp4l401ktimersoftd/309:10:193
8238994034,4cyclictest41-21ksoftirqd/310:10:003
8233994035,3cyclictest9-21ksoftirqd/007:20:010
8233993935,2cyclictest9-21ksoftirqd/010:25:000
8233993935,2cyclictest9-21ksoftirqd/010:25:000
8233993933,3cyclictest9-21ksoftirqd/007:50:000
8238993834,2cyclictest41-21ksoftirqd/309:00:013
8237993832,4cyclictest33-21ksoftirqd/210:40:542
8237993828,7cyclictest33-21ksoftirqd/211:30:002
8233993834,2cyclictest9-21ksoftirqd/009:50:260
8233993834,2cyclictest9-21ksoftirqd/009:05:120
8233993833,3cyclictest9-21ksoftirqd/010:20:000
8233993833,3cyclictest9-21ksoftirqd/010:20:000
8233993833,3cyclictest9-21ksoftirqd/010:15:000
8233993833,3cyclictest9-21ksoftirqd/009:40:000
8233993833,3cyclictest9-21ksoftirqd/009:20:000
8233993833,2cyclictest9-21ksoftirqd/011:40:180
823399381,7cyclictest9-21ksoftirqd/011:10:130
8238993732,3cyclictest41-21ksoftirqd/312:30:003
8237993731,3cyclictest33-21ksoftirqd/208:35:012
8235993731,4cyclictest25-21ksoftirqd/108:03:071
823399374,3cyclictest9-21ksoftirqd/007:15:000
8233993733,2cyclictest9-21ksoftirqd/008:05:000
8233993732,3cyclictest9-21ksoftirqd/007:20:240
8233993731,4cyclictest9-21ksoftirqd/010:01:210
8233993731,3cyclictest9-21ksoftirqd/010:40:000
8233993731,3cyclictest30266-21grep07:55:000
8233993730,4cyclictest9-21ksoftirqd/008:56:180
8233993729,5cyclictest9-21ksoftirqd/010:34:220
8238993630,3cyclictest41-21ksoftirqd/309:35:003
8237993631,3cyclictest33-21ksoftirqd/209:40:002
8237993630,4cyclictest33-21ksoftirqd/210:55:022
8237993630,4cyclictest33-21ksoftirqd/208:04:172
8235993630,4cyclictest25-21ksoftirqd/112:27:151
8235993630,4cyclictest25-21ksoftirqd/111:57:431
8235993630,4cyclictest25-21ksoftirqd/107:42:371
8235993630,3cyclictest25-21ksoftirqd/112:25:001
8233993631,3cyclictest9-21ksoftirqd/012:30:010
8233993631,3cyclictest9-21ksoftirqd/012:19:590
8233993631,3cyclictest9-21ksoftirqd/010:40:130
8233993631,3cyclictest9-21ksoftirqd/009:30:000
8233993631,3cyclictest9-21ksoftirqd/009:10:120
8233993631,3cyclictest9-21ksoftirqd/007:40:140
8233993630,4cyclictest9-21ksoftirqd/007:32:290
823399360,3cyclictest121rcu_preempt11:50:000
823399360,2cyclictest9-21ksoftirqd/011:05:210
50798360,4rtkit-daemon7828-21apt-config12:35:013
8238993531,3cyclictest41-21ksoftirqd/311:20:123
8238993531,3cyclictest41-21ksoftirqd/307:40:233
8238993529,4cyclictest41-21ksoftirqd/310:36:023
8238993529,4cyclictest41-21ksoftirqd/307:52:463
8238993529,4cyclictest41-21ksoftirqd/307:46:003
8238993529,4cyclictest41-21ksoftirqd/307:38:143
8238993529,3cyclictest41-21ksoftirqd/308:15:193
8237993529,4cyclictest33-21ksoftirqd/211:49:582
8237993529,4cyclictest33-21ksoftirqd/211:05:412
8237993529,4cyclictest33-21ksoftirqd/209:06:192
8237993529,4cyclictest33-21ksoftirqd/207:46:322
8237993528,5cyclictest33-21ksoftirqd/211:35:382
823799352,30cyclictest4774-21switchtime09:10:252
823799350,2cyclictest3187-21apt-get10:15:132
823799350,2cyclictest3187-21apt-get10:15:132
8235993530,3cyclictest25-21ksoftirqd/109:36:101
8235993529,4cyclictest25-21ksoftirqd/110:47:191
8235993529,4cyclictest25-21ksoftirqd/108:17:031
8235993529,4cyclictest25-21ksoftirqd/107:57:431
823399355,3cyclictest9-21ksoftirqd/011:20:000
8233993531,2cyclictest9-21ksoftirqd/008:35:010
8233993530,3cyclictest9-21ksoftirqd/011:35:150
8233993530,3cyclictest9-21ksoftirqd/009:00:150
8233993530,3cyclictest9-21ksoftirqd/008:40:000
8233993530,2cyclictest9-21ksoftirqd/007:25:180
8233993529,3cyclictest9-21ksoftirqd/011:00:140
8233993529,3cyclictest9-21ksoftirqd/010:00:010
8233993529,3cyclictest9-21ksoftirqd/008:05:190
8233993528,3cyclictest9-21ksoftirqd/008:50:130
8238993430,3cyclictest41-21ksoftirqd/309:20:003
8238993429,3cyclictest41-21ksoftirqd/308:45:113
8238993428,4cyclictest41-21ksoftirqd/312:08:133
8238993428,4cyclictest41-21ksoftirqd/311:59:303
8238993428,4cyclictest41-21ksoftirqd/310:58:043
8238993428,4cyclictest41-21ksoftirqd/309:50:083
8238993428,3cyclictest41-21ksoftirqd/311:40:013
8238993428,3cyclictest41-21ksoftirqd/308:03:143
8237993428,4cyclictest33-21ksoftirqd/207:11:582
823799342,29cyclictest20868-21tr09:45:122
8237993412,19cyclictest8703-21cat11:30:192
8235993428,4cyclictest25-21ksoftirqd/112:38:551
8235993428,4cyclictest25-21ksoftirqd/112:19:101
8235993428,4cyclictest25-21ksoftirqd/111:16:561
8235993428,4cyclictest25-21ksoftirqd/109:24:471
8235993411,20cyclictest31420-21cut10:05:171
823599340,4cyclictest13034-21awk10:35:001
823399345,3cyclictest9-21ksoftirqd/009:50:010
823399344,2cyclictest121rcu_preempt12:10:250
8233993431,2cyclictest9-21ksoftirqd/012:34:190
8233993429,3cyclictest9-21ksoftirqd/010:45:230
8233993429,3cyclictest9-21ksoftirqd/008:50:000
8233993429,2cyclictest9-21ksoftirqd/008:30:000
8233993428,4cyclictest9-21ksoftirqd/012:23:180
8233993424,3cyclictest9-21ksoftirqd/012:00:140
823399340,7cyclictest9-21ksoftirqd/011:25:140
823399340,7cyclictest9-21ksoftirqd/010:30:000
8238993329,3cyclictest41-21ksoftirqd/311:54:593
8238993329,3cyclictest41-21ksoftirqd/311:54:593
8238993328,3cyclictest41-21ksoftirqd/311:10:013
8238993327,4cyclictest41-21ksoftirqd/312:03:433
8238993327,3cyclictest41-21ksoftirqd/309:45:003
8238993327,3cyclictest41-21ksoftirqd/309:45:003
823799338,22cyclictest627-21/usr/sbin/munin10:10:192
8237993328,3cyclictest33-21ksoftirqd/212:37:282
8237993328,3cyclictest33-21ksoftirqd/208:09:202
8237993327,4cyclictest33-21ksoftirqd/212:20:552
8237993327,4cyclictest33-21ksoftirqd/210:35:002
8237993327,4cyclictest33-21ksoftirqd/210:22:492
8237993327,4cyclictest33-21ksoftirqd/210:22:492
8237993327,4cyclictest33-21ksoftirqd/209:52:282
8237993327,4cyclictest33-21ksoftirqd/209:01:012
8237993327,4cyclictest33-21ksoftirqd/208:41:452
8237993327,4cyclictest33-21ksoftirqd/208:19:332
8237993327,4cyclictest33-21ksoftirqd/208:14:132
823799331,28cyclictest24144-21sort07:40:202
8237993311,19cyclictest8948-21idleruntime10:25:162
8237993311,19cyclictest31227-21cat10:05:152
823799330,4cyclictest30296-21gpgv09:00:002
823799330,3cyclictest31118-21hddtemp_smartct11:10:172
823799330,3cyclictest26112-21tune2fs11:00:172
823799330,3cyclictest22457-21chrt07:35:362
823799330,3cyclictest13267-21expr11:40:132
8235993328,3cyclictest25-21ksoftirqd/110:55:281
8235993327,4cyclictest25-21ksoftirqd/111:35:331
8235993327,4cyclictest25-21ksoftirqd/111:24:141
8235993327,4cyclictest25-21ksoftirqd/110:25:531
8235993327,4cyclictest25-21ksoftirqd/109:16:011
8235993327,4cyclictest25-21ksoftirqd/108:40:341
8235993327,4cyclictest25-21ksoftirqd/108:08:491
8235993327,4cyclictest25-21ksoftirqd/107:11:121
8235993313,18cyclictest12982-21latency_hist07:20:001
8235993311,20cyclictest15761-21cat11:45:151
823399336,6cyclictest9-21ksoftirqd/010:50:190
8233993329,3cyclictest9-21ksoftirqd/009:35:000
8233993328,3cyclictest9-21ksoftirqd/012:39:200
8233993328,3cyclictest9-21ksoftirqd/011:25:000
8233993328,3cyclictest9-21ksoftirqd/009:45:000
8233993328,3cyclictest9-21ksoftirqd/009:45:000
823399331,29cyclictest111rcuc/011:30:220
8238993228,3cyclictest41-21ksoftirqd/312:10:203
8238993228,3cyclictest41-21ksoftirqd/309:00:193
8238993228,2cyclictest41-21ksoftirqd/307:10:163
8238993227,3cyclictest41-21ksoftirqd/312:35:203
8238993227,3cyclictest41-21ksoftirqd/310:20:193
8238993227,3cyclictest41-21ksoftirqd/310:20:193
8238993226,4cyclictest41-21ksoftirqd/309:21:443
8238993226,4cyclictest41-21ksoftirqd/307:57:413
8238993226,3cyclictest41-21ksoftirqd/309:35:173
8237993227,3cyclictest33-21ksoftirqd/212:34:472
8237993226,4cyclictest33-21ksoftirqd/207:56:102
8237993226,4cyclictest33-21ksoftirqd/207:18:282
823799322,23cyclictest20340-21apt-get11:55:142
823799320,3cyclictest18150-21expr11:50:132
823799320,3cyclictest18150-21expr11:50:132
823799320,3cyclictest15036-21unixbench_singl10:35:292
823799320,3cyclictest0-21swapper/209:55:172
823799320,2cyclictest22812-21apt-get12:00:132
823799320,2cyclictest18147-21apt-get07:30:122
8235993227,3cyclictest25-21ksoftirqd/112:02:031
8235993227,3cyclictest25-21ksoftirqd/108:23:521
8235993226,4cyclictest25-21ksoftirqd/112:30:361
8235993226,4cyclictest25-21ksoftirqd/111:41:471
8235993226,4cyclictest25-21ksoftirqd/110:37:481
8235993226,4cyclictest25-21ksoftirqd/109:02:171
8235993226,4cyclictest25-21ksoftirqd/108:45:041
8235993226,3cyclictest25-21ksoftirqd/111:52:451
8235993226,3cyclictest25-21ksoftirqd/111:52:441
8233993228,3cyclictest9-21ksoftirqd/010:05:120
8233993226,4cyclictest9-21ksoftirqd/012:09:010
8233993226,4cyclictest9-21ksoftirqd/008:18:440
823399321,4cyclictest9-21ksoftirqd/009:20:140
823399321,4cyclictest9-21ksoftirqd/008:40:220
8238993127,3cyclictest41-21ksoftirqd/311:30:223
8238993127,2cyclictest41-21ksoftirqd/309:50:003
8238993126,3cyclictest41-21ksoftirqd/311:47:523
8238993126,3cyclictest41-21ksoftirqd/310:45:383
8238993126,3cyclictest41-21ksoftirqd/309:55:263
8238993126,3cyclictest41-21ksoftirqd/309:29:533
8238993126,3cyclictest41-21ksoftirqd/308:13:333
8238993126,3cyclictest41-21ksoftirqd/307:20:003
8238993126,3cyclictest1319-21snmpd10:12:233
8238993125,4cyclictest41-21ksoftirqd/312:16:033
8238993125,4cyclictest41-21ksoftirqd/308:32:463
823799318,20cyclictest27837-21cpuspeed_turbos12:10:132
8237993126,3cyclictest33-21ksoftirqd/212:08:552
8237993126,3cyclictest33-21ksoftirqd/209:18:402
8237993125,4cyclictest33-21ksoftirqd/209:26:532
8237993125,4cyclictest33-21ksoftirqd/208:54:352
8237993125,4cyclictest33-21ksoftirqd/207:27:182
823799311,24cyclictest0-21swapper/208:25:112
823799310,28cyclictest18979-21cut10:45:172
823599318,20cyclictest29621-21vmstat12:10:291
8235993126,3cyclictest25-21ksoftirqd/110:02:011
8235993126,3cyclictest25-21ksoftirqd/108:15:001
8235993125,4cyclictest25-21ksoftirqd/109:44:251
8235993125,4cyclictest25-21ksoftirqd/109:44:251
8235993125,4cyclictest25-21ksoftirqd/108:39:181
8235993125,4cyclictest25-21ksoftirqd/107:46:511
8235993124,4cyclictest25-21ksoftirqd/109:46:591
8235993113,15cyclictest26773-21tr09:55:221
8235993112,16cyclictest30310-21date07:55:011
8235993111,18cyclictest7148-21cat11:25:251
8235993111,17cyclictest10609-21acpi09:25:111
8235993110,19cyclictest8107-21sort11:30:151
823399313,3cyclictest121rcu_preempt08:20:210
8233993127,2cyclictest9-21ksoftirqd/008:00:000
8233993126,3cyclictest9-21ksoftirqd/011:50:250
8233993126,3cyclictest9-21ksoftirqd/011:50:250
823399311,4cyclictest9-21ksoftirqd/007:35:250
8238993026,3cyclictest41-21ksoftirqd/307:20:213
8238993024,4cyclictest41-21ksoftirqd/307:33:013
823799308,20cyclictest3554-21df_abs11:20:152
823799305,22cyclictest1946-21processes11:15:232
8237993024,4cyclictest33-21ksoftirqd/210:51:132
8237993024,4cyclictest33-21ksoftirqd/209:42:412
8237993024,4cyclictest33-21ksoftirqd/209:42:412
823799300,3cyclictest28852-21iostat_ios10:00:212
823799300,3cyclictest15176-21chrt07:21:442
8235993025,3cyclictest25-21ksoftirqd/110:54:561
8235993025,3cyclictest25-21ksoftirqd/110:42:261
8235993025,3cyclictest25-21ksoftirqd/109:32:201
8235993024,4cyclictest25-21ksoftirqd/110:17:461
8235993024,4cyclictest25-21ksoftirqd/110:17:461
8235993024,4cyclictest25-21ksoftirqd/107:26:171
823599300,4cyclictest2500-21/usr/sbin/munin09:05:241
8238992926,2cyclictest41-21ksoftirqd/308:30:013
8238992925,3cyclictest41-21ksoftirqd/311:20:003
8238992924,3cyclictest41-21ksoftirqd/311:40:123
8238992923,4cyclictest41-21ksoftirqd/311:04:063
8238992923,4cyclictest41-21ksoftirqd/310:43:003
823799298,18cyclictest13747-21iwlist09:30:182
823799293,21cyclictest27985-21apt-get07:50:112
823799291,25cyclictest30961-21/usr/sbin/munin12:15:182
823599297,19cyclictest15764-21df08:30:151
8235992924,3cyclictest25-21ksoftirqd/111:11:411
8235992923,4cyclictest25-21ksoftirqd/109:54:521
8235992913,14cyclictest1230-21fw_packets10:10:171
8235992910,16cyclictest27675-21latency_hist08:55:001
138491290,0ptp4l401ktimersoftd/310:34:493
8238992824,3cyclictest41-21ksoftirqd/310:00:213
8238992824,2cyclictest41-21ksoftirqd/307:25:193
8238992821,4cyclictest41-21ksoftirqd/310:50:203
823599288,17cyclictest13973-21latency08:25:201
823599278,16cyclictest25732-21cpuspeed_turbos11:00:141
823599277,18cyclictest25813-21fschecks_time12:05:171
8235992722,3cyclictest25-21ksoftirqd/111:05:271
8235992722,3cyclictest25-21ksoftirqd/108:58:071
8235992722,3cyclictest25-21ksoftirqd/107:32:221
8235992721,4cyclictest25-21ksoftirqd/109:12:521
8235992721,4cyclictest25-21ksoftirqd/107:36:031
823599270,3cyclictest5882-21apt-get10:20:131
823599270,3cyclictest5882-21apt-get10:20:131
823599270,3cyclictest13691-21df_inode07:20:161
8238992621,3cyclictest41-21ksoftirqd/308:05:213
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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