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2026-04-09 - 04:28
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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 Thu Apr 09, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
171482930,6chrt17145-21cat23:35:340
171482930,6chrt17145-21cat23:35:340
18449998831,34cyclictest2268-21sshd22:55:280
18452998531,39cyclictest26-21ksoftirqd/122:55:261
18449998232,15cyclictest14-21ksoftirqd/021:10:460
18449997647,23cyclictest0-21swapper/000:10:120
17312760,6sleep11736-21grep21:20:361
18449997538,9cyclictest18525-21/usr/sbin/munin19:10:320
18449997531,23cyclictest14-21ksoftirqd/023:30:230
1798127516,48sleep00-21swapper/019:07:020
18449997439,29cyclictest503-21snmpd20:00:370
18449997431,19cyclictest524-21lldpd19:15:360
1844999732,44cyclictest14-21ksoftirqd/023:50:250
18449997310,41cyclictest14428-21cat23:30:020
18452997127,39cyclictest26-21ksoftirqd/120:32:501
18449997040,25cyclictest15073-21telnet20:30:160
18449997020,13cyclictest14-21ksoftirqd/023:56:460
18449997020,13cyclictest14-21ksoftirqd/023:56:460
18449996937,15cyclictest14-21ksoftirqd/022:50:340
18449996936,27cyclictest31445-21telnet21:15:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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