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2026-05-12 - 21:44
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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 100 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
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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