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2025-07-13 - 09:57
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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 10 highest latencies:
System rackbslot7.osadl.org (updated Sun Jul 13, 2025 00:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28771214610,47sleep228777-21diskstats19:01:192
300849912263,51cyclictest2955-21latency_hist19:20:550
300849911362,44cyclictest26319-21ntp_offset22:41:220
30084991133,30cyclictest14079-21awk21:21:270
30084991122,24cyclictest12554-21fschecks_time00:11:170
30084991122,24cyclictest12554-21fschecks_time00:11:170
30084991099,23cyclictest30083-21sort19:05:560
300849910942,60cyclictest10565-21sort21:16:050
300979910740,16cyclictest0-21swapper/220:30:542
300849910751,49cyclictest9871-21ssh00:06:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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