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2025-08-22 - 00:11
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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 50 highest latencies:
System rack3slot6.osadl.org (updated Thu Aug 21, 2025 12:45:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2180721090,5chrt21805-21ls12:25:011
639399967,78cyclictest24963-21apt-get08:00:160
6393999570,12cyclictest14-21ksoftirqd/007:40:170
6393999416,70cyclictest0-21swapper/010:45:120
6393999169,10cyclictest14-21ksoftirqd/009:50:170
6393999064,15cyclictest0-21swapper/009:55:120
6393998664,13cyclictest14-21ksoftirqd/011:10:120
6393998656,19cyclictest14-21ksoftirqd/009:25:150
6393998656,19cyclictest14-21ksoftirqd/009:25:150
6393998655,21cyclictest0-21swapper/010:20:140
6393998632,44cyclictest0-21swapper/012:30:150
6393998537,39cyclictest14-21ksoftirqd/008:15:170
6393998515,59cyclictest0-21swapper/008:35:130
639399846,64cyclictest1312-21apt-get08:25:160
6393998434,38cyclictest14-21ksoftirqd/008:45:140
6393998418,53cyclictest0-21swapper/010:05:150
6393998418,53cyclictest0-21swapper/010:05:140
6393998414,60cyclictest0-21swapper/010:00:180
6393998413,57cyclictest0-21swapper/009:40:130
6393998412,58cyclictest0-21swapper/008:10:150
6393998412,58cyclictest0-21swapper/008:10:150
58462846,23sleep10-21swapper/107:06:101
639399836,65cyclictest11380-21apt-get11:55:130
639399835,63cyclictest24725-21apt-get09:30:130
6393998355,17cyclictest14-21ksoftirqd/008:30:140
6393998315,56cyclictest0-21swapper/011:15:140
6393998315,56cyclictest0-21swapper/011:15:140
6393998313,55cyclictest0-21swapper/010:25:140
6393998312,60cyclictest0-21swapper/012:10:130
6393998312,57cyclictest0-21swapper/009:05:140
639399823,17cyclictest14318-21needreboot10:30:290
639399822,73cyclictest19173-21sed10:45:010
639399822,73cyclictest19173-21sed10:45:010
202712820,3sleep1251rcuc/109:15:381
639399817,62cyclictest2597-21apt-get11:30:140
6393998151,20cyclictest14-21ksoftirqd/010:50:160
6393998114,57cyclictest0-21swapper/012:25:150
6393998114,55cyclictest0-21swapper/011:45:130
6393998113,58cyclictest0-21swapper/007:25:150
6393998113,54cyclictest0-21swapper/011:40:130
6393998112,54cyclictest0-21swapper/008:40:140
639399806,58cyclictest857-21apt-get11:25:170
639399804,26cyclictest15135-21seq07:30:370
6393998013,54cyclictest0-21swapper/008:50:130
6393998012,58cyclictest0-21swapper/011:20:140
6393998012,57cyclictest0-21swapper/012:20:150
639399797,55cyclictest19717-21apt-get07:45:150
6393997917,52cyclictest420-21dbus-daemon10:15:000
6393997915,54cyclictest0-21swapper/007:20:140
6393997913,58cyclictest0-21swapper/007:35:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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