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2026-04-27 - 23:20
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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 Mon Apr 27, 2026 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1189699122106,10cyclictest16029-21sshd07:13:080
11902991074,48cyclictest31559-21ssh10:17:361
11902999750,40cyclictest28524-21ssh11:07:211
11896999353,26cyclictest181rcu_preempt11:52:370
11902999249,35cyclictest0-21swapper/109:12:241
11902999242,42cyclictest0-21swapper/111:37:491
1190299914,34cyclictest18898-21ssh09:02:221
1190299914,34cyclictest18898-21ssh09:02:221
11902999137,47cyclictest17106-21sh10:47:421
1190299913,34cyclictest4742-21/usr/sbin/munin09:32:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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