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2025-07-19 - 06:29
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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 Sat Jul 19, 2025 00:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4026746997416,39cyclictest4155668-21collect222:55:224
4026746997113,39cyclictest4184585-21sed23:45:224
4026746997032,19cyclictest4121401-21sh21:55:154
4026746997012,39cyclictest4143112-21/usr/sbin/munin22:35:154
4026746996830,19cyclictest873-21mta-sts-daemon21:00:014
4026746996829,20cyclictest1088-21runrttasks20:46:554
4026746996810,39cyclictest4147607-21sed22:40:244
4026744996325,19cyclictest411rcuc/200:10:192
4026746996122,39cyclictest871-21mta-sts-daemon19:25:474
402674699603,38cyclictest878-21mta-sts-daemon00:31:464
4026749995920,39cyclictest0-21swapper/721:00:177
4026746995918,40cyclictest4191932-21df_inode00:00:144
4026746995817,19cyclictest4062285-21ntpq20:10:204
4026746995617,38cyclictest0-21swapper/420:31:534
4026746995617,19cyclictest4116428-21ntpq21:45:224
4026746995536,18cyclictest4047731-21basename19:45:154
4026746995517,19cyclictest4097727-21munin-run21:15:024
4026746995514,19cyclictest4188788-21awk23:55:144
4026746995419,35cyclictest0-21swapper/423:21:094
4026746995419,15cyclictest0-21swapper/421:19:234
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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