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2026-07-31 - 22:49
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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 Fri Jul 31, 2026 12:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
163902228167,49sleep10-21swapper/107:08:281
163642204172,21sleep20-21swapper/207:08:092
162802204169,23sleep00-21swapper/007:07:020
162482203168,23sleep30-21swapper/307:06:373
539921900,7sleep01681099cyclictest10:00:200
1451021670,4sleep31681399cyclictest11:25:163
1031021420,6sleep21681299cyclictest11:15:242
16518210280,11sleep10-21swapper/107:10:001
138491900,1ptp4l17132-21cstates07:10:133
54282540,2sleep30-21swapper/307:50:253
132652540,1sleep10-21swapper/110:15:261
1681099530,11cyclictest18226-21ptp4l07:10:250
42082520,3sleep11681199cyclictest10:00:011
184882520,2sleep20-21swapper/208:15:282
184882520,2sleep20-21swapper/208:15:282
154962520,2sleep00-21swapper/011:25:240
138491510,1ptp4l401ktimersoftd/311:55:343
1681099500,17cyclictest1319-21snmpd08:32:120
1681099500,11cyclictest28851-21date10:50:000
1681099500,11cyclictest1535-21cat08:50:000
1681099500,10cyclictest15171-21irqstats10:20:200
135191480,7getstats1681399cyclictest11:14:213
1681099472,42cyclictest11105-21awk12:25:000
1681099472,17cyclictest0-21swapper/009:30:160
1681099470,11cyclictest7214-21perl09:00:170
1681099460,17cyclictest0-21swapper/010:50:000
50798450,9rtkit-daemon0-21swapper/307:55:103
1681099450,7cyclictest26688-21apt-get07:30:130
138491440,0ptp4l401ktimersoftd/311:33:243
135191440,7getstats1681399cyclictest11:09:213
16812994339,2cyclictest33-21ksoftirqd/209:39:592
138491430,0ptp4l401ktimersoftd/310:15:173
1681099420,10cyclictest11801-21cut08:05:010
138491420,1ptp4l401ktimersoftd/309:05:533
138491420,0ptp4l401ktimersoftd/310:49:153
138491420,0ptp4l401ktimersoftd/309:32:043
16813994127,12cyclictest41-21ksoftirqd/311:55:013
16812994136,3cyclictest33-21ksoftirqd/210:00:002
16811994136,3cyclictest1120-21sh12:05:011
138491410,0ptp4l401ktimersoftd/312:30:293
16811994035,3cyclictest25-21ksoftirqd/109:25:001
16813993934,3cyclictest23788-21awk10:40:003
16812993934,3cyclictest33-21ksoftirqd/211:25:002
16812993934,3cyclictest33-21ksoftirqd/210:35:012
16812993934,3cyclictest33-21ksoftirqd/209:50:002
16812993932,4cyclictest17571-21irqrtprio07:10:192
16812993928,10cyclictest33-21ksoftirqd/212:30:152
16813993832,4cyclictest41-21ksoftirqd/311:44:093
16813993832,4cyclictest41-21ksoftirqd/311:36:273
16812993832,3cyclictest33-21ksoftirqd/209:05:192
16812993827,9cyclictest33-21ksoftirqd/210:35:302
16812993826,9cyclictest33-21ksoftirqd/208:40:282
1681099381,7cyclictest7915-21python12:15:240
50798370,5rtkit-daemon0-21swapper/311:21:063
16813993731,4cyclictest41-21ksoftirqd/310:01:523
16813993731,4cyclictest41-21ksoftirqd/308:13:003
16812993733,2cyclictest33-21ksoftirqd/208:40:002
16812993732,3cyclictest33-21ksoftirqd/212:25:182
16812993732,3cyclictest33-21ksoftirqd/210:05:132
16812993731,4cyclictest33-21ksoftirqd/211:46:262
16812993731,4cyclictest33-21ksoftirqd/208:09:092
16811993732,3cyclictest25-21ksoftirqd/112:35:001
16811993732,3cyclictest25-21ksoftirqd/109:00:001
16811993731,3cyclictest25-21ksoftirqd/111:27:591
1681099370,8cyclictest25049-21memory11:45:210
1681099370,7cyclictest14882-21hddtemp_smartct08:10:160
138491370,0ptp4l401ktimersoftd/309:25:133
16813993631,3cyclictest41-21ksoftirqd/312:22:143
16813993630,4cyclictest41-21ksoftirqd/312:19:483
16813993630,4cyclictest41-21ksoftirqd/310:51:433
16813993630,4cyclictest41-21ksoftirqd/307:37:463
16813993629,5cyclictest41-21ksoftirqd/312:06:193
16812993631,3cyclictest33-21ksoftirqd/212:20:162
16812993630,4cyclictest33-21ksoftirqd/209:51:322
16811993631,3cyclictest25-21ksoftirqd/112:00:001
16811993631,3cyclictest25-21ksoftirqd/107:20:111
16811993630,4cyclictest25-21ksoftirqd/112:29:531
16811993630,4cyclictest25-21ksoftirqd/110:21:001
16811993630,4cyclictest25-21ksoftirqd/109:38:391
16811993630,4cyclictest25-21ksoftirqd/109:04:331
138491360,0ptp4l401ktimersoftd/310:20:163
50798350,4rtkit-daemon223-21systemd-journal11:27:072
16813993530,3cyclictest41-21ksoftirqd/308:07:083
16813993530,3cyclictest41-21ksoftirqd/308:00:113
16813993529,4cyclictest41-21ksoftirqd/312:01:303
16813993529,4cyclictest41-21ksoftirqd/311:46:013
16813993529,4cyclictest41-21ksoftirqd/310:33:003
16813993529,4cyclictest41-21ksoftirqd/309:10:533
16813993529,4cyclictest41-21ksoftirqd/308:38:513
16813993529,4cyclictest41-21ksoftirqd/308:31:383
16812993532,2cyclictest33-21ksoftirqd/212:10:192
16812993532,2cyclictest33-21ksoftirqd/210:59:592
16812993530,3cyclictest33-21ksoftirqd/212:10:012
16812993530,3cyclictest33-21ksoftirqd/210:20:192
16812993530,3cyclictest33-21ksoftirqd/210:15:182
16812993530,3cyclictest33-21ksoftirqd/210:15:002
16812993530,3cyclictest33-21ksoftirqd/208:45:202
16812993530,3cyclictest33-21ksoftirqd/208:20:202
16812993529,4cyclictest33-21ksoftirqd/211:53:032
16812993529,4cyclictest33-21ksoftirqd/210:45:432
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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