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2023-06-04 - 05:44

x86 Intel Pentium @133 MHz, Linux 4.18.7-rt5 (Profile)

Latency plot of system in rack #3, slot #5
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l25000000 -m -n -a0 -t1 -p99 -i800 -h1000 -q
Total number of samples: 25 million
Resolution of latency scale: reduced 
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 10 highest latencies:
System rack3slot5.osadl.org (updated Sun Jun 04, 2023 00:44:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26049939429,0cyclictest2624-21runrttasks20:05:290
26049938882,0cyclictest7740-21cat00:21:320
26049936335,0cyclictest11431-21sendmail00:40:020
26049936329,0cyclictest1151-21jbd2/sda1-820:35:060
26049936228,0cyclictest4632-21mailstats19:20:300
26049936162,0cyclictest12781-21nfs_client19:56:050
26049935935,0cyclictest6927-21apt00:20:000
26049935451,0cyclictest15748-21munin-node20:10:290
26049935239,0cyclictest8146-21mailstats22:00:290
26049935195,0cyclictest3087-21sort19:11:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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