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2021-10-24 - 02:09

Pentium 75 - 200, 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 20 highest latencies:
System rack3slot5.osadl.org (updated Sun Oct 03, 2021 12:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
166519940534,0cyclictest8197-21latency_hist09:00:100
166519940481,0cyclictest0-21swapper10:56:240
166519940036,0cyclictest20539-21latency_hist09:55:140
166519939693,0cyclictest851-21cron10:50:020
166519939470,0cyclictest10409-21munin-run09:10:030
166519939385,0cyclictest31001-21munin-run10:40:070
166519939235,0cyclictest20240-21switchtime12:11:400
166519939159,0cyclictest31618-21awk08:20:030
166519938738,0cyclictest31198-21irqstats10:40:330
166519938728,0cyclictest18612-21sh12:05:420
166519938686,0cyclictest28276-21ssh10:27:170
166519938686,0cyclictest10404-21diskmemload11:35:150
166519938683,0cyclictest1877-21sort08:31:020
166519938642,0cyclictest22625-21ssh10:05:270
166519938488,0cyclictest16505-21ssh09:36:210
166519938472,0cyclictest27209-21sendmail-msp12:40:090
166519938386,0cyclictest13778-21sh11:45:030
166519938338,0cyclictest22112-21latency_hist12:20:170
166519938328,0cyclictest9337-21sed11:26:270
166519938178,0cyclictest487-21chrt08:25:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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