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2024-04-20 - 08:30
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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 rack3slot6.osadl.org (updated Sat Apr 20, 2024 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2996221210,4chrt29960-21aten2.4_r3power00:00:160
115021130,4chrt1148-21sshd00:09:510
297482950,5chrt29631-21latency_hist00:00:020
1947129114,37sleep00-21swapper/019:08:050
74602880,4chrt7442-21missed_timers20:00:250
198262800,5chrt19376-21apt-get20:35:130
30062790,4chrt2570-21apt-get19:50:110
210882770,4chrt21086-21forks23:35:220
57232690,4sleep05722-21cstates21:25:160
74232650,4chrt7093-21apt-get22:58:100
1986299577,40cyclictest14144-21apt-get20:20:100
19862995631,15cyclictest24395-21apt-get23:45:110
19862995229,18cyclictest14-21ksoftirqd/020:29:200
19862995129,13cyclictest21682-21apt-get20:40:100
8362502,7sleep0888-21python321:10:370
226632503,7sleep022739-21memory19:15:250
19862995034,10cyclictest12661-21diskstats20:15:180
1986299493,40cyclictest27802-21ntp_states22:25:270
1986299493,39cyclictest14478-21apt-get21:50:100
1986299493,39cyclictest129862sleep023:14:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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