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2025-06-28 - 22:41
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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 rackbslot7.osadl.org (updated Sat Jun 28, 2025 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12465212315,74sleep012183-21/usr/sbin/munin07:02:200
136879911963,15cyclictest15321-21kworker/u17:2-rpciod10:57:361
2540921130,6sleep20-21swapper/211:15:082
2540921130,6sleep20-21swapper/211:15:082
136949910838,33cyclictest0-21swapper/210:32:132
136949910838,33cyclictest0-21swapper/210:32:132
136779910617,59cyclictest6803-21sh12:36:140
13677991054,70cyclictest12070-21sh10:50:510
13677991054,58cyclictest0-21swapper/010:12:170
1347721046,16sleep10-21swapper/107:06:161
13677991032,83cyclictest31771-21apt-get11:27:080
13677991007,54cyclictest0-21swapper/011:58:500
1367799997,53cyclictest0-21swapper/010:37:000
1367799995,53cyclictest0-21swapper/007:57:100
1367799993,88cyclictest25823-21apt-get07:42:190
13677999928,60cyclictest0-21swapper/010:51:580
1367799992,61cyclictest26956-21/usr/sbin/munin11:17:280
1367799992,23cyclictest11670-21sh09:48:040
1367799985,80cyclictest19224-21apt-get09:02:080
1367799984,56cyclictest2854-21sed11:32:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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