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2024-04-25 - 09:53
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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 50 highest latencies:
System rack5slot2.osadl.org (updated Thu Apr 25, 2024 00:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
281522195178,12sleep00-21swapper/019:09:430
281712191174,12sleep20-21swapper/219:09:572
259522188171,12sleep30-21swapper/319:05:043
279132173159,10sleep10-21swapper/119:06:391
224552690,0sleep30-21swapper/300:25:003
19582440,0sleep10-21swapper/122:16:031
96382170,0sleep10-21swapper/120:50:141
283509990,8cyclictest17882-21perf23:05:000
14570290,0sleep00-21swapper/021:00:150
283509980,1cyclictest19437-21ssh23:25:100
283509980,0cyclictest0-21swapper/023:15:120
283509972,1cyclictest8387-21ssh23:37:160
283509972,1cyclictest498-21systemd-logind21:15:250
283509972,1cyclictest30088-21grep23:50:150
283509972,1cyclictest1498-21ntpd22:26:410
283509971,1cyclictest3602-21snmpd21:08:010
283509971,1cyclictest3602-21snmpd20:44:480
283509971,1cyclictest3602-21snmpd20:37:360
283509971,1cyclictest3602-21snmpd20:34:260
283509971,1cyclictest3602-21snmpd20:29:330
283509971,1cyclictest3602-21snmpd20:20:480
283509971,1cyclictest3602-21snmpd20:13:300
283509971,1cyclictest3602-21snmpd20:08:240
283509971,1cyclictest3602-21snmpd20:03:060
283509971,1cyclictest3602-21snmpd19:35:240
283509971,1cyclictest3602-21snmpd19:34:450
283509971,1cyclictest3602-21snmpd19:29:090
283509971,1cyclictest3602-21snmpd19:23:570
283509971,1cyclictest3602-21snmpd19:15:240
283509971,1cyclictest24849-21uname20:15:190
283509971,1cyclictest21434-21tune2fs23:45:160
283509971,1cyclictest15210-21cut00:20:160
283509971,1cyclictest14728-21awk19:55:200
283509971,1cyclictest12976-21taskset19:50:550
283509971,1cyclictest0-21swapper/020:45:210
283509970,4cyclictest16683-21munin-run22:45:010
283509970,1cyclictest4104-21df21:20:130
283509970,1cyclictest31714-21perl00:30:120
283509970,1cyclictest26068-21diskstats22:50:140
283509970,1cyclictest21507-21apt21:50:010
283509970,1cyclictest17642-21diskstats22:45:130
283509970,1cyclictest12514-21ntp_states20:55:200
6723260,0sleep10-21swapper/100:35:071
283509961,1cyclictest7399-21ntp_states19:40:150
283509961,1cyclictest3602-21snmpd00:07:560
283509961,1cyclictest31091-21ssh23:31:210
283509961,1cyclictest29728-21sh21:35:190
283509961,1cyclictest2541-21if_eth422:55:160
283509961,1cyclictest16678-21sshd21:27:250
283509960,5cyclictest0-21swapper/022:15:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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