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2026-05-23 - 22:02
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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 10 highest latencies:
System rackbslot7.osadl.org (updated Sat May 23, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1280521327,17sleep00-21swapper/006:57:410
1280521327,17sleep00-21swapper/006:57:410
12276210715,54sleep212325-21awk06:56:162
12276210715,54sleep212325-21awk06:56:162
1319699973,42cyclictest25125-21ssh11:50:492
1319699973,42cyclictest25125-21ssh11:50:492
1319199943,37cyclictest15593-21/usr/sbin/munin10:41:111
13196999244,42cyclictest8238-21timerwakeupswit08:21:122
13196999244,41cyclictest18699-21latency_hist08:55:392
1319199923,33cyclictest3418-21ssh10:20:371
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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