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2026-04-25 - 14:12
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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 Apr 25, 2026 00:46:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2011826997717,59cyclictest236199-21snmpd00:08:386
2011826997113,39cyclictest2131657-21ntpq22:45:246
2011826997113,39cyclictest2131657-21ntpq22:45:236
2011826996929,39cyclictest0-21swapper/621:09:216
2011826996828,39cyclictest0-21swapper/620:31:546
2011826996628,38cyclictest0-21swapper/623:41:286
2011826996526,39cyclictest0-21swapper/600:01:006
2011826996324,39cyclictest0-21swapper/600:39:526
2011826996224,19cyclictest2106304-21fschecks_time22:00:156
201182699580,39cyclictest2163435-21aten2.4_rfpower23:45:136
201182699580,39cyclictest2094394-21systemctl21:40:016
2011826995638,18cyclictest781ktimers/600:31:146
2011826995619,37cyclictest0-21swapper/619:35:056
201182699560,56cyclictest0-21swapper/620:21:116
2011826995537,18cyclictest781ktimers/621:33:256
2011826995519,36cyclictest0-21swapper/623:55:066
2011826995519,35cyclictest0-21swapper/619:27:456
201182699550,15cyclictest0-21swapper/620:50:396
2011826995435,19cyclictest781ktimers/622:29:186
2011826995419,35cyclictest0-21swapper/620:19:576
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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