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2026-05-09 - 20:55
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Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 50 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 rack5slot7.osadl.org (updated Sat May 09, 2026 12:44:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32481224410,12sleep024853-1kworker/u3:307:04:580
326899915580,53cyclictest1548-21tr11:16:330
326899915281,49cyclictest20792-21apt-get09:01:510
326899915276,50cyclictest9992-21apt-get10:06:580
326899914978,30cyclictest14209-21sendmail_mailqu10:18:120
326899914977,48cyclictest29089-21irqstats09:27:480
326899914974,51cyclictest25734-21modprobe12:26:410
326899914974,33cyclictest18821-21ls12:06:400
326899914973,54cyclictest29063-21ssh12:36:330
326899914973,36cyclictest14056-21sshd08:22:300
326899914890,36cyclictest4821-21apt-get09:51:560
326899914876,50cyclictest11319-21ntp_kernel_err08:07:270
326899914876,48cyclictest26912-21/usr/sbin/munin09:22:400
326899914874,51cyclictest17313-21/usr/sbin/munin10:27:400
326899914873,49cyclictest31041-21ssh11:07:320
326899914872,37cyclictest10732-21rm11:42:450
326899914871,37cyclictest15845-21pluginstate10:23:100
326899914781,46cyclictest13279-21sendmail_mailqu08:17:350
326899914777,50cyclictest21208-21ntp_states12:13:030
326899914776,49cyclictest12577-21munin-run08:16:340
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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