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2026-03-24 - 19:01
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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 Tue Mar 24, 2026 12:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5215210532,25sleep10-21swapper/107:06:291
5307210419,39sleep00-21swapper/007:07:270
57219910377,13cyclictest14-21ksoftirqd/011:50:110
5721999873,16cyclictest14-21ksoftirqd/009:20:120
5721999873,14cyclictest14-21ksoftirqd/010:20:150
5721999766,20cyclictest0-21swapper/011:30:140
5721999668,19cyclictest14-21ksoftirqd/011:35:150
5721999018,20cyclictest0-21swapper/011:40:180
5721998961,17cyclictest14-21ksoftirqd/007:10:140
5721998861,18cyclictest14-21ksoftirqd/009:25:120
5721998859,18cyclictest14-21ksoftirqd/009:55:130
5721998726,20cyclictest31453-21ntpq09:50:280
5721998659,17cyclictest14-21ksoftirqd/011:55:130
5721998658,18cyclictest14-21ksoftirqd/009:05:120
5721998615,25cyclictest0-21swapper/012:10:140
5721998555,19cyclictest14-21ksoftirqd/007:15:150
5721998513,27cyclictest0-21swapper/007:25:110
5721998351,22cyclictest14-21ksoftirqd/007:30:130
5721998222,35cyclictest13850-21df_inode12:05:190
5721998121,19cyclictest0-21swapper/008:50:240
5721998119,20cyclictest0-21swapper/008:35:260
5721998112,23cyclictest0-21swapper/011:05:150
5721998054,16cyclictest14-21ksoftirqd/010:15:110
5721998045,21cyclictest14-21ksoftirqd/009:10:150
5721998027,31cyclictest25836-21cron08:05:000
5721998023,37cyclictest17952-21runrttasks12:15:350
5721998023,31cyclictest15332-21packagekitd07:35:050
572199798,62cyclictest26019-21runrttasks08:05:120
5721997929,25cyclictest31110-21latency_hist08:20:000
5721997929,25cyclictest2359-21runrttasks08:30:120
5721997928,26cyclictest32742-21unixbench_singl11:25:370
5721997925,26cyclictest19189-21apt10:50:010
5721997849,19cyclictest14-21ksoftirqd/012:30:140
5721997829,24cyclictest21933-21awk10:55:330
5721997828,26cyclictest28847-21runrttasks11:15:300
5721997828,25cyclictest3892-21runrttasks10:05:220
5721997828,25cyclictest24098-21plymouth08:00:000
5721997828,24cyclictest1760-21runrttasks08:25:400
5721997828,21cyclictest27255-21apt-get09:40:150
5721997828,21cyclictest27255-21apt-get09:40:140
5721997828,20cyclictest12871-21grep12:00:370
5721997827,26cyclictest20366-21latency_hist12:25:000
5721997827,25cyclictest250-21systemd-journal11:10:210
5721997826,28cyclictest6523-21munin-node11:45:100
5721997825,26cyclictest19733-21sh09:19:590
5721997825,21cyclictest0-21swapper/012:35:340
5721997825,20cyclictest13900-21chrt10:35:000
5721997821,25cyclictest0-21swapper/011:00:120
5721997819,33cyclictest20772-21runrttasks07:50:110
5721997818,30cyclictest0-21swapper/010:39:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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