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2026-05-12 - 20:43
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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 rackdslot4.osadl.org (updated Tue May 12, 2026 12:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
171632203170,22sleep20-21swapper/207:08:242
171942202167,23sleep10-21swapper/107:08:471
169912200165,23sleep00-21swapper/007:06:080
138591200167,22phc2sys0-21swapper/307:05:033
1289521760,6sleep21759099cyclictest12:25:142
1904821550,2sleep11758999cyclictest09:20:201
2300421530,2sleep20-21swapper/208:25:132
1385918363,11phc2sys0-21swapper/307:10:003
1385918363,11phc2sys0-21swapper/307:10:003
1759099688,18cyclictest7240-21vmstat08:55:282
179252570,5sleep00-21swapper/008:14:590
178982570,2sleep10-21swapper/107:10:131
178982570,2sleep10-21swapper/107:10:131
113272550,3sleep30-21swapper/308:00:193
1759099526,11cyclictest1235-21awk10:55:232
1759099524,16cyclictest3758-21/usr/sbin/munin12:05:242
1759099524,16cyclictest25397-21/usr/sbin/munin08:30:102
1759099524,15cyclictest16937-21/usr/sbin/munin09:15:262
138491520,1ptp4l401ktimersoftd/311:03:463
1759099484,8cyclictest973-21irqrtprio07:40:202
1759099483,8cyclictest24289-21ls10:35:272
1759099482,7cyclictest22487-21apt-get11:40:132
126502480,2sleep20-21swapper/210:15:012
100172480,5sleep310018-21latency_hist10:10:003
1759099474,10cyclictest29298-21awk09:40:252
1759099474,10cyclictest29298-21awk09:40:252
1759099473,7cyclictest13094-21apt-get08:05:102
1759099472,16cyclictest2564-21latency_hist09:55:002
17590994613,31cyclictest0-21swapper/207:10:242
17590994613,31cyclictest0-21swapper/207:10:242
1759099460,44cyclictest0-21swapper/207:20:232
138491460,9ptp4l0-21swapper/310:10:223
1759099454,7cyclictest7951-21diskstats11:10:152
1759099453,7cyclictest29070-21ls10:45:242
1759099445,9cyclictest15068-21runrttasks11:25:032
1759099444,8cyclictest26414-21meminfo09:35:212
1759099443,16cyclictest4954-21apt-get12:10:112
1759099434,7cyclictest30327-21apt-get08:40:112
1759099434,7cyclictest15899-21meminfo12:30:192
1759099434,16cyclictest28497-21meminfo11:50:192
1758999430,1cyclictest0-21swapper/107:21:531
1759199422,37cyclictest25021-21cron07:25:003
1759099424,7cyclictest6142-21memory11:05:222
1759099424,14cyclictest4323-21sensors_temp07:45:262
17589994237,3cyclictest4641-21anacron11:03:101
138491420,0ptp4l401ktimersoftd/309:03:143
17589994135,3cyclictest9999-21sh10:10:001
138491400,0ptp4l401ktimersoftd/311:18:093
138491400,0ptp4l401ktimersoftd/309:05:543
17591993926,11cyclictest41-21ksoftirqd/309:18:113
1759099385,32cyclictest0-21swapper/209:45:242
17589993834,3cyclictest25-21ksoftirqd/110:05:011
1758999380,1cyclictest0-21swapper/110:40:341
17591993731,4cyclictest41-21ksoftirqd/310:45:513
17591993731,4cyclictest41-21ksoftirqd/310:39:383
17589993732,3cyclictest25-21ksoftirqd/107:50:001
17589993731,4cyclictest25-21ksoftirqd/107:42:241
17591993630,4cyclictest41-21ksoftirqd/311:12:383
17591993630,3cyclictest41-21ksoftirqd/307:40:013
1759099360,33cyclictest0-21swapper/210:26:242
17589993630,4cyclictest25-21ksoftirqd/112:34:211
17589993630,4cyclictest25-21ksoftirqd/112:22:571
17589993630,4cyclictest25-21ksoftirqd/111:35:121
17589993630,4cyclictest25-21ksoftirqd/111:23:031
17589993630,4cyclictest25-21ksoftirqd/109:56:071
17588993631,3cyclictest9-21ksoftirqd/007:15:110
138491360,1ptp4l401ktimersoftd/308:33:563
17591993531,2cyclictest41-21ksoftirqd/308:29:493
17591993530,3cyclictest41-21ksoftirqd/311:45:103
17591993529,4cyclictest41-21ksoftirqd/312:37:473
17591993529,4cyclictest41-21ksoftirqd/312:04:253
17591993529,4cyclictest41-21ksoftirqd/311:57:233
17591993529,4cyclictest41-21ksoftirqd/311:29:033
17591993528,4cyclictest41-21ksoftirqd/308:58:313
17590993529,4cyclictest33-21ksoftirqd/211:36:082
17590993529,4cyclictest33-21ksoftirqd/208:52:582
17590993529,4cyclictest33-21ksoftirqd/208:49:372
17589993529,4cyclictest25-21ksoftirqd/112:09:051
17589993529,4cyclictest25-21ksoftirqd/111:28:241
17589993529,4cyclictest25-21ksoftirqd/109:26:461
17589993529,4cyclictest25-21ksoftirqd/109:03:301
17589993529,4cyclictest25-21ksoftirqd/107:29:281
17588993529,4cyclictest9-21ksoftirqd/011:50:420
1385913530,2phc2sys41-21ksoftirqd/310:05:003
138491350,0ptp4l401ktimersoftd/309:44:543
138491350,0ptp4l401ktimersoftd/309:44:543
17591993429,3cyclictest41-21ksoftirqd/309:38:363
17591993429,3cyclictest41-21ksoftirqd/308:50:013
17591993428,4cyclictest41-21ksoftirqd/312:07:583
17591993428,4cyclictest41-21ksoftirqd/309:54:043
17591993428,4cyclictest41-21ksoftirqd/308:13:353
17591993427,5cyclictest41-21ksoftirqd/310:25:403
17591993427,4cyclictest41-21ksoftirqd/308:53:313
17590993430,3cyclictest33-21ksoftirqd/209:03:372
17590993428,4cyclictest33-21ksoftirqd/211:48:162
17590993428,4cyclictest33-21ksoftirqd/211:20:042
17590993428,4cyclictest33-21ksoftirqd/210:06:072
17589993429,3cyclictest25-21ksoftirqd/109:10:211
17589993428,4cyclictest25-21ksoftirqd/112:19:361
17589993428,4cyclictest25-21ksoftirqd/111:57:571
17589993428,4cyclictest25-21ksoftirqd/110:34:051
17589993428,4cyclictest25-21ksoftirqd/108:29:531
17589993428,4cyclictest25-21ksoftirqd/107:15:471
17589993427,5cyclictest25-21ksoftirqd/112:12:501
17589993427,5cyclictest25-21ksoftirqd/109:48:051
17589993427,5cyclictest25-21ksoftirqd/107:53:061
17588993429,3cyclictest9-21ksoftirqd/007:32:390
17588993428,4cyclictest9-21ksoftirqd/012:23:000
17588993428,4cyclictest9-21ksoftirqd/012:15:300
17588993428,4cyclictest9-21ksoftirqd/011:46:490
17588993428,4cyclictest9-21ksoftirqd/010:43:270
17588993428,4cyclictest9-21ksoftirqd/009:42:460
17588993428,4cyclictest9-21ksoftirqd/009:42:460
17588993428,4cyclictest9-21ksoftirqd/009:05:310
17588993428,4cyclictest9-21ksoftirqd/008:38:230
17588993427,5cyclictest9-21ksoftirqd/010:54:060
17588993427,4cyclictest9-21ksoftirqd/011:45:000
17591993328,3cyclictest41-21ksoftirqd/308:43:043
17591993328,3cyclictest12098-21cron12:25:003
17591993327,4cyclictest41-21ksoftirqd/310:41:223
17591993327,4cyclictest41-21ksoftirqd/309:32:453
17591993327,4cyclictest41-21ksoftirqd/308:22:003
17591993327,4cyclictest41-21ksoftirqd/308:07:533
1759099333,14cyclictest10334-21apt-get09:05:122
17590993328,3cyclictest33-21ksoftirqd/212:00:372
17590993327,4cyclictest33-21ksoftirqd/211:15:352
17590993327,4cyclictest33-21ksoftirqd/210:22:152
17590993327,4cyclictest33-21ksoftirqd/209:56:112
17590993327,4cyclictest33-21ksoftirqd/209:33:292
17590993327,4cyclictest33-21ksoftirqd/207:36:382
17590993327,4cyclictest33-21ksoftirqd/207:25:442
17589993328,3cyclictest25-21ksoftirqd/110:39:101
17589993328,3cyclictest25-21ksoftirqd/108:23:081
17589993327,4cyclictest25-21ksoftirqd/111:47:181
17589993327,4cyclictest25-21ksoftirqd/111:30:291
17589993327,4cyclictest25-21ksoftirqd/109:31:351
17589993327,4cyclictest25-21ksoftirqd/108:48:551
17589993327,4cyclictest25-21ksoftirqd/108:09:361
17589993327,4cyclictest25-21ksoftirqd/107:39:351
17589993326,4cyclictest25-21ksoftirqd/108:59:591
17588993328,3cyclictest9-21ksoftirqd/012:10:380
17588993328,3cyclictest9-21ksoftirqd/011:05:010
17588993328,3cyclictest9-21ksoftirqd/010:39:420
17588993328,3cyclictest9-21ksoftirqd/008:25:120
17588993327,4cyclictest9-21ksoftirqd/011:18:540
17588993327,4cyclictest9-21ksoftirqd/010:47:520
17588993327,4cyclictest9-21ksoftirqd/010:34:520
17588993327,4cyclictest9-21ksoftirqd/009:34:270
17588993327,4cyclictest9-21ksoftirqd/008:32:290
17588993327,4cyclictest9-21ksoftirqd/008:05:410
17588993327,4cyclictest9-21ksoftirqd/008:04:290
17588993327,4cyclictest9-21ksoftirqd/007:21:370
17588993326,5cyclictest9-21ksoftirqd/011:55:440
138491330,0ptp4l401ktimersoftd/307:40:243
17591993227,3cyclictest41-21ksoftirqd/311:53:503
17591993227,3cyclictest41-21ksoftirqd/309:47:143
17591993226,4cyclictest41-21ksoftirqd/310:31:383
17591993226,4cyclictest41-21ksoftirqd/310:21:233
17590993227,3cyclictest33-21ksoftirqd/210:42:002
17590993227,3cyclictest33-21ksoftirqd/208:03:362
17590993227,3cyclictest19421-21systemctl09:20:232
17590993226,4cyclictest33-21ksoftirqd/211:01:472
17590993226,4cyclictest33-21ksoftirqd/209:13:102
17590993226,4cyclictest33-21ksoftirqd/208:20:242
17590993226,3cyclictest33-21ksoftirqd/207:30:102
17589993227,3cyclictest25-21ksoftirqd/109:36:271
17589993226,4cyclictest25-21ksoftirqd/109:09:281
17589993226,4cyclictest25-21ksoftirqd/108:11:521
1758999321,2cyclictest121rcu_preempt10:10:211
17588993227,3cyclictest9-21ksoftirqd/012:00:370
17588993227,3cyclictest9-21ksoftirqd/010:17:320
17588993227,3cyclictest9-21ksoftirqd/009:18:140
17588993227,3cyclictest9-21ksoftirqd/008:18:320
17588993226,4cyclictest9-21ksoftirqd/012:38:000
17588993226,4cyclictest9-21ksoftirqd/009:54:520
17588993226,4cyclictest9-21ksoftirqd/008:45:120
17588993226,4cyclictest9-21ksoftirqd/008:42:110
17588993226,4cyclictest9-21ksoftirqd/007:47:520
17591993126,3cyclictest41-21ksoftirqd/311:31:483
17591993126,3cyclictest41-21ksoftirqd/311:20:113
17591993126,3cyclictest41-21ksoftirqd/309:29:213
17591993125,4cyclictest41-21ksoftirqd/310:59:223
17591993125,4cyclictest41-21ksoftirqd/308:15:363
17590993127,3cyclictest33-21ksoftirqd/212:20:002
17590993126,3cyclictest33-21ksoftirqd/212:22:222
17590993125,4cyclictest33-21ksoftirqd/212:37:382
17590993125,4cyclictest33-21ksoftirqd/208:37:372
17590993125,4cyclictest33-21ksoftirqd/207:56:492
17589993126,3cyclictest25-21ksoftirqd/112:01:381
17589993126,3cyclictest25-21ksoftirqd/108:19:591
17589993125,4cyclictest25-21ksoftirqd/110:52:351
17589993124,4cyclictest25-21ksoftirqd/109:51:011
17588993126,3cyclictest9-21ksoftirqd/012:27:530
17588993126,3cyclictest9-21ksoftirqd/011:10:110
17588993126,3cyclictest9-21ksoftirqd/010:25:110
17588993126,3cyclictest9-21ksoftirqd/010:10:440
17588993126,3cyclictest9-21ksoftirqd/008:53:550
17588993126,3cyclictest9-21ksoftirqd/007:59:080
17588993125,4cyclictest9-21ksoftirqd/012:07:520
17588993125,4cyclictest9-21ksoftirqd/011:35:420
17588993125,4cyclictest9-21ksoftirqd/011:32:340
17588993125,4cyclictest9-21ksoftirqd/011:26:280
17588993125,4cyclictest9-21ksoftirqd/008:22:220
17588993125,4cyclictest9-21ksoftirqd/007:52:580
138491310,0ptp4l401ktimersoftd/310:19:143
138491310,0ptp4l401ktimersoftd/307:59:533
17591993025,3cyclictest41-21ksoftirqd/312:29:053
17591993025,3cyclictest41-21ksoftirqd/307:48:523
17591993025,3cyclictest41-21ksoftirqd/307:28:313
17591993024,4cyclictest41-21ksoftirqd/312:34:073
17591993024,4cyclictest41-21ksoftirqd/309:24:083
17591993024,4cyclictest41-21ksoftirqd/308:36:463
17590993024,4cyclictest33-21ksoftirqd/207:54:002
17589993025,3cyclictest25-21ksoftirqd/110:15:141
17589993024,4cyclictest25-21ksoftirqd/111:42:491
17589993024,4cyclictest25-21ksoftirqd/111:11:161
17589993024,4cyclictest25-21ksoftirqd/110:21:291
17589993024,4cyclictest25-21ksoftirqd/108:41:291
17588993025,3cyclictest9-21ksoftirqd/011:20:270
17588993025,3cyclictest9-21ksoftirqd/011:06:220
17588993025,3cyclictest9-21ksoftirqd/010:55:190
17588993025,3cyclictest9-21ksoftirqd/009:48:530
17588993024,4cyclictest9-21ksoftirqd/010:24:340
17588993024,4cyclictest9-21ksoftirqd/009:20:470
138491300,0ptp4l401ktimersoftd/311:35:243
17591992924,3cyclictest41-21ksoftirqd/312:19:233
17591992924,3cyclictest41-21ksoftirqd/312:11:373
17591992924,3cyclictest41-21ksoftirqd/311:42:323
17591992924,3cyclictest41-21ksoftirqd/309:14:093
1759099294,15cyclictest18728-21/usr/sbin/munin08:15:172
17590992924,3cyclictest33-21ksoftirqd/211:32:192
17590992924,3cyclictest33-21ksoftirqd/210:31:192
17590992924,3cyclictest33-21ksoftirqd/210:17:502
17590992924,3cyclictest33-21ksoftirqd/210:03:122
17589992924,3cyclictest25-21ksoftirqd/112:36:581
17589992924,3cyclictest25-21ksoftirqd/111:55:001
17589992924,3cyclictest25-21ksoftirqd/111:15:521
17589992924,3cyclictest25-21ksoftirqd/108:00:131
17589992923,4cyclictest25-21ksoftirqd/107:59:281
17588992924,3cyclictest9-21ksoftirqd/010:07:000
17588992924,3cyclictest9-21ksoftirqd/009:27:520
17588992923,4cyclictest9-21ksoftirqd/009:35:360
138491290,0ptp4l401ktimersoftd/311:05:023
138491290,0ptp4l401ktimersoftd/307:18:503
17590992823,3cyclictest33-21ksoftirqd/208:10:192
17589992823,3cyclictest25-21ksoftirqd/110:47:541
17589992823,3cyclictest25-21ksoftirqd/108:50:161
17589992822,3cyclictest25-21ksoftirqd/108:30:111
17588992822,4cyclictest9-21ksoftirqd/007:27:430
138491280,0ptp4l401ktimersoftd/310:50:473
138491280,0ptp4l401ktimersoftd/307:54:233
17590992722,3cyclictest33-21ksoftirqd/207:16:092
17589992722,3cyclictest25-21ksoftirqd/112:29:401
17589992721,4cyclictest25-21ksoftirqd/110:27:031
17589992721,4cyclictest25-21ksoftirqd/108:37:151
17588992722,3cyclictest9-21ksoftirqd/010:02:230
17588992722,3cyclictest9-21ksoftirqd/007:12:340
17588992722,3cyclictest9-21ksoftirqd/007:12:340
17591992621,3cyclictest41-21ksoftirqd/307:34:443
17591992619,4cyclictest41-21ksoftirqd/309:55:133
17590992621,3cyclictest33-21ksoftirqd/209:25:472
17589992622,2cyclictest25-21ksoftirqd/109:15:271
17589992620,4cyclictest25-21ksoftirqd/111:05:541
17588992621,3cyclictest9-21ksoftirqd/007:40:000
17590992520,3cyclictest33-21ksoftirqd/211:55:272
17589992520,3cyclictest25-21ksoftirqd/110:55:531
17588992520,3cyclictest9-21ksoftirqd/009:58:250
17589992420,3cyclictest25-21ksoftirqd/107:30:211
17588992318,3cyclictest9-21ksoftirqd/007:41:060
17589992217,3cyclictest25-21ksoftirqd/109:40:121
17589992217,3cyclictest25-21ksoftirqd/109:40:121
17588992217,3cyclictest9-21ksoftirqd/012:34:510
17590992010,7cyclictest1319-21snmpd10:50:132
17588992015,3cyclictest9-21ksoftirqd/009:10:190
17588991914,3cyclictest9-21ksoftirqd/009:00:330
17588991913,4cyclictest6637-21netstat08:55:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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