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2024-05-05 - 06:38
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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 rackeslot6.osadl.org (updated Sat May 04, 2024 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13083409910898,7cyclictest1388163-21latency_hist11:20:011
13083399910492,9cyclictest1352337-21/usr/sbin/munin09:30:240
13083399910190,8cyclictest1392930-21latency_hist11:35:010
13083399910087,10cyclictest1342812-21apt-get09:00:140
1308340999884,12cyclictest1358069-21kworker/u8:3+flush-179:010:00:261
1308340999683,10cyclictest1400896-21latency_hist12:00:011
1308339999585,7cyclictest2158010-21systemd-journal07:25:010
1308339999286,4cyclictest1342599-21kworker/u8:1+flush-179:009:40:000
1308340999179,9cyclictest1396381-21apt-get11:45:091
1308339999180,8cyclictest2158010-21systemd-journal07:45:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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