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2026-08-15 - 22:57
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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 Sat Aug 15, 2026 12:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1022221190,6sleep10-21swapper/110:05:171
116959910475,16cyclictest0-21swapper/008:25:150
11113210418,38sleep00-21swapper/007:05:430
11695999970,15cyclictest14-21ksoftirqd/008:10:130
11695999876,10cyclictest14-21ksoftirqd/007:40:130
11695999865,18cyclictest0-21swapper/010:55:130
11706999763,20cyclictest26-21ksoftirqd/111:50:141
11695999469,12cyclictest14-21ksoftirqd/010:50:150
11695999368,13cyclictest14-21ksoftirqd/010:25:230
11695999267,12cyclictest14-21ksoftirqd/010:40:150
11695999169,12cyclictest14-21ksoftirqd/012:10:130
11695999164,18cyclictest0-21swapper/011:00:130
11695998658,16cyclictest14-21ksoftirqd/011:25:120
11695998657,18cyclictest14-21ksoftirqd/010:05:130
11695998555,19cyclictest14-21ksoftirqd/007:35:130
11706998429,14cyclictest26-21ksoftirqd/107:38:241
11695998355,16cyclictest14-21ksoftirqd/008:30:150
11695998353,18cyclictest14-21ksoftirqd/011:35:130
11706998127,14cyclictest26-21ksoftirqd/107:50:011
11695998152,19cyclictest14-21ksoftirqd/009:25:150
1169599805,65cyclictest22689-21apt-get09:10:260
11695998051,19cyclictest14-21ksoftirqd/009:20:130
11695998049,20cyclictest14-21ksoftirqd/010:45:150
11706997933,14cyclictest26-21ksoftirqd/110:25:001
11695997948,21cyclictest14-21ksoftirqd/007:10:250
11695997948,21cyclictest14-21ksoftirqd/007:10:250
11695997947,18cyclictest14-21ksoftirqd/008:15:140
11695997916,56cyclictest28639-21aten2.4-expect07:55:170
11706997825,13cyclictest26-21ksoftirqd/107:45:011
1169599788,55cyclictest15426-21apt-get11:50:140
11695997848,21cyclictest0-21swapper/011:20:130
11695997828,44cyclictest12544-21sed11:40:270
1169599777,56cyclictest13614-21apt-get08:45:140
11695997747,20cyclictest14-21ksoftirqd/012:35:160
11695997747,19cyclictest14-21ksoftirqd/010:35:250
11695997734,35cyclictest14334-21/usr/sbin/munin07:15:250
11706997627,15cyclictest26-21ksoftirqd/110:20:011
11706997626,13cyclictest26-21ksoftirqd/109:50:041
11706997626,13cyclictest26-21ksoftirqd/109:50:041
1169599768,62cyclictest0-21swapper/008:50:150
1169599767,57cyclictest11897-21apt-get10:10:130
11695997627,43cyclictest15781-21basename10:20:170
1169599757,57cyclictest29741-21apt-get12:30:130
1169599757,54cyclictest11876-21apt-get08:40:130
11695997547,16cyclictest14-21ksoftirqd/011:10:140
11695997542,19cyclictest0-21swapper/009:45:140
11695997526,36cyclictest14-21ksoftirqd/008:00:150
11695997442,18cyclictest0-21swapper/012:00:150
11695997426,41cyclictest25562-21memory07:45:270
11695997424,43cyclictest24506-21expr12:15:180
11695997424,43cyclictest24506-21expr12:15:180
1169599738,55cyclictest0-21swapper/008:55:130
1169599735,38cyclictest0-21swapper/009:15:290
11695997325,40cyclictest25960-21apt-get12:20:150
11695997321,47cyclictest11718-21sendmail-msp08:40:000
11695997321,47cyclictest11718-21sendmail-msp08:40:000
11695997321,45cyclictest20667-21apt-get12:05:110
11706997227,15cyclictest26-21ksoftirqd/112:20:001
11706997227,15cyclictest26-21ksoftirqd/112:20:001
11706997218,14cyclictest26-21ksoftirqd/112:09:001
1169599728,52cyclictest0-21swapper/011:15:130
1169599726,54cyclictest1090-21apt-get09:40:150
11695997227,38cyclictest32042-21df_inode09:35:200
11695997226,37cyclictest17635-21irqstats11:55:240
11695997211,56cyclictest28174-21aten2.4-expect12:25:280
11706997124,15cyclictest26-21ksoftirqd/107:20:011
11706997122,14cyclictest26-21ksoftirqd/109:10:061
1169599716,55cyclictest4839-21apt-get08:20:130
1169599715,53cyclictest16106-21apt-get07:20:130
1169599714,62cyclictest15529-21basename10:20:010
11695997139,20cyclictest14-21ksoftirqd/009:00:120
1169599709,52cyclictest0-21swapper/009:05:140
1169599703,60cyclictest503-21snmpd11:33:280
1169599702,46cyclictest562-21runrttasks10:00:120
11695997022,42cyclictest32117-21tail11:05:160
1169599699,53cyclictest0-21swapper/007:50:130
1169599699,48cyclictest0-21swapper/009:30:160
1169599699,48cyclictest0-21swapper/009:30:160
1169599698,50cyclictest0-21swapper/008:05:110
1169599698,48cyclictest0-21swapper/011:45:150
1169599697,52cyclictest4866-21apt-get09:50:230
1169599697,52cyclictest4866-21apt-get09:50:230
1169599697,49cyclictest0-21swapper/007:30:130
11695996915,49cyclictest19911-21cat10:30:230
1170699686,13cyclictest0-21swapper/107:30:141
11706996826,15cyclictest26-21ksoftirqd/111:30:001
1169599688,45cyclictest17844-21apt-get07:25:130
11706996729,16cyclictest26-21ksoftirqd/108:35:001
11706996728,15cyclictest26-21ksoftirqd/108:55:001
11706996714,20cyclictest251rcuc/108:55:311
1169599678,47cyclictest0-21swapper/009:55:150
11706996626,13cyclictest26-21ksoftirqd/107:25:001
1110126622,33sleep10-21swapper/107:05:361
11706996530,14cyclictest26-21ksoftirqd/112:05:001
11706996522,15cyclictest26-21ksoftirqd/110:00:341
1170699652,13cyclictest151rcu_preempt12:23:371
11706996325,16cyclictest26-21ksoftirqd/112:25:051
11706996320,14cyclictest26-21ksoftirqd/111:00:011
11706996225,15cyclictest26-21ksoftirqd/110:50:001
11706996215,17cyclictest26-21ksoftirqd/108:10:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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