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2026-05-25 - 20:02
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6.osadl.org (updated Mon May 25, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3032321540,5sleep1251rcuc/109:00:111
3000621200,6chrt30008-21ntpq07:25:291
2064021110,4sleep10-21swapper/111:35:011
228729910174,13cyclictest14-21ksoftirqd/009:25:250
22872999873,12cyclictest14-21ksoftirqd/010:15:120
22872999860,28cyclictest0-21swapper/010:45:110
22872999779,9cyclictest14-21ksoftirqd/009:55:130
22872999563,18cyclictest0-21swapper/008:15:140
22872999463,19cyclictest0-21swapper/008:50:130
22872999365,15cyclictest14-21ksoftirqd/007:40:130
22872999365,15cyclictest14-21ksoftirqd/007:40:130
22872999278,9cyclictest14-21ksoftirqd/011:10:310
22872999262,18cyclictest14-21ksoftirqd/008:30:140
2272129132,48sleep10-21swapper/107:09:521
22872998963,18cyclictest14-21ksoftirqd/012:20:120
22872998962,16cyclictest14-21ksoftirqd/009:10:120
22872998859,19cyclictest14-21ksoftirqd/007:45:110
22872998859,18cyclictest14-21ksoftirqd/008:40:110
22872998656,19cyclictest14-21ksoftirqd/007:25:130
22872998555,19cyclictest14-21ksoftirqd/012:25:130
22872998452,18cyclictest14-21ksoftirqd/009:35:130
22872998354,20cyclictest14-21ksoftirqd/011:25:230
22872998353,19cyclictest14-21ksoftirqd/009:00:130
22872998351,19cyclictest14-21ksoftirqd/010:30:120
22872998249,20cyclictest14-21ksoftirqd/011:05:140
22872998146,21cyclictest14-21ksoftirqd/010:55:130
22872998146,21cyclictest14-21ksoftirqd/010:55:130
22872998019,35cyclictest5831-21tail07:50:170
22872997945,19cyclictest14-21ksoftirqd/010:25:130
22872997917,39cyclictest10077-21irqstats12:35:250
22872997915,41cyclictest31686-21irqstats12:05:240
22872997837,29cyclictest0-21swapper/007:55:100
22872997828,21cyclictest503-21snmpd09:15:230
22872997827,20cyclictest25990-21runrttasks11:50:140
22872997826,26cyclictest562-21runrttasks10:00:240
22872997826,25cyclictest1267-21awk09:10:010
22872997746,17cyclictest14-21ksoftirqd/008:10:150
22872997726,20cyclictest1971-21phpquery07:39:000
22872997725,21cyclictest27103-21awk07:20:000
22872997719,33cyclictest28978-21runrttasks11:56:440
22872997716,36cyclictest32190-21ntpq10:35:280
22872997710,41cyclictest0-21swapper/009:45:130
22872997635,30cyclictest0-21swapper/008:05:140
22872997630,36cyclictest9288-21apt-get08:00:100
22872997627,20cyclictest16163-21runrttasks09:50:240
22872997626,21cyclictest7867-21apt-get12:30:150
22872997626,20cyclictest17043-21runrttasks08:20:270
22872997618,31cyclictest18185-21aten2.4-expect08:25:180
2267827618,48sleep00-21swapper/007:09:240
22872997544,18cyclictest4938-21apt-get09:20:150
22872997527,19cyclictest27587-21runrttasks07:20:190
22872997526,25cyclictest562-21runrttasks11:40:210
22872997525,25cyclictest9544-21cat11:05:020
22872997524,26cyclictest27852-21awk10:25:010
22872997517,32cyclictest12425-21aten2.4-expect09:40:160
22872997512,32cyclictest0-21swapper/011:20:220
22872997425,25cyclictest1428-21runrttasks10:40:250
22872997424,20cyclictest29485-21runrttasks12:00:120
22872997423,23cyclictest24527-21apt-get07:15:010
22872997422,28cyclictest10295-21awk09:35:000
22872997422,21cyclictest0-21swapper/008:45:110
22872997420,30cyclictest23116-21runrttasks10:10:210
22872997411,32cyclictest0-21swapper/011:45:160
22872997325,23cyclictest5906-21cron10:55:000
22872997324,19cyclictest0-21swapper/008:55:330
22872997323,21cyclictest22347-21sendmail-msp11:40:000
22872997322,27cyclictest18949-21apt-get11:30:110
22877997247,9cyclictest26-21ksoftirqd/111:23:141
22877997218,14cyclictest26-21ksoftirqd/112:30:001
22872997223,20cyclictest31214-21aten2.4_r3power07:30:170
22872997222,24cyclictest1-21systemd08:35:170
22872997221,20cyclictest0-21swapper/012:15:380
22872997215,32cyclictest22645-21sort10:10:000
22872997212,30cyclictest0-21swapper/012:10:290
22872997140,19cyclictest13112-21apt-get11:15:110
22872997140,19cyclictest13112-21apt-get11:15:110
22877997036,28cyclictest26-21ksoftirqd/110:10:181
22877996937,27cyclictest26-21ksoftirqd/112:12:251
22877996745,8cyclictest26-21ksoftirqd/109:05:571
22877996419,40cyclictest26-21ksoftirqd/111:39:011
22877996416,18cyclictest16130-21turbostat08:20:001
2287799637,42cyclictest0-21swapper/107:45:141
22877996327,23cyclictest26-21ksoftirqd/110:30:111
22877996322,22cyclictest26-21ksoftirqd/111:25:031
22877996312,8cyclictest151rcu_preempt09:45:011
22877996310,20cyclictest26-21ksoftirqd/109:25:051
2287799626,47cyclictest323-21apt-get07:35:111
22877996227,23cyclictest26-21ksoftirqd/112:20:261
22877996227,23cyclictest26-21ksoftirqd/110:50:141
22877996227,23cyclictest26-21ksoftirqd/107:55:281
22877996227,22cyclictest26-21ksoftirqd/112:05:131
22877996226,23cyclictest26-21ksoftirqd/112:00:121
22877996226,23cyclictest26-21ksoftirqd/108:10:141
22877996225,24cyclictest26-21ksoftirqd/110:20:141
22877996225,15cyclictest26-21ksoftirqd/107:20:001
22877996223,13cyclictest26-21ksoftirqd/109:20:011
22877996215,41cyclictest0-21swapper/110:55:181
22877996215,41cyclictest0-21swapper/110:55:181
22877996129,15cyclictest26-21ksoftirqd/112:35:201
22877996126,23cyclictest26-21ksoftirqd/111:50:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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