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2026-05-05 - 05:21
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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 rackfslot7.osadl.org (updated Tue May 05, 2026 00:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1429290997737,19cyclictest874-21mta-sts-daemon19:56:376
1429290997637,18cyclictest875-21mta-sts-daemon20:29:456
1429290997535,19cyclictest874-21mta-sts-daemon21:48:336
1429290997435,18cyclictest781-21mta-sts-daemon20:33:486
1429290997415,19cyclictest871-21mta-sts-daemon23:12:296
1429290997415,19cyclictest871-21mta-sts-daemon23:12:286
1429290997334,19cyclictest7850ktimers/622:24:096
1429290997333,19cyclictest0-21swapper/620:45:096
1429290997233,18cyclictest0-21swapper/621:31:056
1429290997233,18cyclictest0-21swapper/600:37:336
1429290997233,0cyclictest0-21swapper/620:19:376
1429290997231,19cyclictest1499471-21irqstats21:15:176
1429290997212,21cyclictest1485675-21awk20:50:216
1429290996911,39cyclictest1511817-21unin-run21:40:016
1429290996910,39cyclictest1576636-21systemctl23:35:216
142929099634,19cyclictest0-21swapper/623:57:456
142929099624,19cyclictest0-21swapper/600:25:086
142929099620,40cyclictest236199-21snmpd20:36:576
142929099612,59cyclictest0-21swapper/621:23:496
1429290996121,40cyclictest1540750-21ntpq22:30:196
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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