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2026-03-27 - 23:28
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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 20 highest latencies:
System rack1slot8.osadl.org (updated Fri Mar 27, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
321999918621775,80cyclictest32613-21df_abs07:10:140
32200999682,852cyclictest8938-21cut07:35:011
319572600580,13sleep10-21swapper/107:07:571
305172591568,16sleep00-21swapper/007:05:090
3220099427389,24cyclictest0-21swapper/107:10:141
32199991055,90cyclictest0-21swapper/007:35:010
54432940,4sleep15447-21gltestperf10:55:161
3219999775,14cyclictest0-21swapper/007:58:590
32199997735,22cyclictest3861-21crond09:55:000
32199997634,23cyclictest16388-21ssh10:15:290
32199997434,33cyclictest28921-21munin-node08:30:120
32199997338,29cyclictest11093-21munin-node09:10:260
228699730,4rtkit-daemon2285-21rtkit-daemon12:39:030
32199997231,16cyclictest2801-21irqstats10:50:180
32199997229,36cyclictest1568-21runrttasks10:02:510
32199997135,15cyclictest19647-21ssh12:19:410
32199997033,30cyclictest23047-21ssh09:30:190
32199997027,29cyclictest10438-21ssh12:01:410
32199996935,28cyclictest333-21munin-node11:45:230
32199996934,29cyclictest20009-21gltestperf09:25:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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