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2025-07-12 - 13:04
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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 Sat Jul 12, 2025 00:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
281012206189,12sleep10-21swapper/119:05:071
301262183166,12sleep00-21swapper/019:07:270
302432178161,12sleep30-21swapper/319:08:583
302422158140,13sleep20-21swapper/219:08:572
172952650,0sleep017271-21ssh00:05:120
83702470,0sleep20-21swapper/221:16:232
83702470,0sleep20-21swapper/221:16:232
66852430,0sleep10-21swapper/122:53:551
44672430,0sleep30-21swapper/323:09:183
315312430,0sleep20-21swapper/200:11:582
36042410,0sleep30-21swapper/300:14:523
304799992,3cyclictest31431-21perf21:45:010
304799981,3cyclictest1611-21idleruntime-cro21:30:010
304799980,4cyclictest24093-21awk21:25:020
20871280,0sleep10-21swapper/123:34:021
304799973,4cyclictest21006-21idleruntime-cro19:55:000
304929960,6cyclictest0-21swapper/321:21:343
304869960,6cyclictest0-21swapper/221:35:562
304799962,4cyclictest16455-21perf20:50:000
304799961,5cyclictest0-21swapper/000:25:070
304799960,6cyclictest61-21kswapd022:30:120
304799960,1cyclictest15142-21ssh23:47:120
13124260,0sleep10-21swapper/122:24:441
3465250,0sleep20-21swapper/221:46:352
304929955,0cyclictest26544-21diskmemload22:27:293
304929955,0cyclictest0-21swapper/322:43:383
304929952,3cyclictest30997-21snmpd21:49:183
304929951,3cyclictest30997-21snmpd21:56:393
304929950,5cyclictest26544-21diskmemload23:35:343
304929950,5cyclictest0-21swapper/323:42:333
304929950,5cyclictest0-21swapper/323:17:323
304929950,5cyclictest0-21swapper/323:11:163
304929950,5cyclictest0-21swapper/300:20:493
304929950,4cyclictest31194-21apt-get22:50:013
304929950,0cyclictest0-21swapper/323:51:003
304929950,0cyclictest0-21swapper/322:22:493
304869951,3cyclictest30997-21snmpd21:59:302
304869951,1cyclictest0-21swapper/222:45:182
304869950,5cyclictest0-21swapper/223:25:132
304869950,5cyclictest0-21swapper/220:40:192
304869950,4cyclictest21514-21sh00:06:512
304869950,4cyclictest0-21swapper/220:00:132
304809954,1cyclictest0-21swapper/121:35:111
304809951,2cyclictest0-21swapper/100:10:121
304809950,5cyclictest0-21swapper/123:21:321
304809950,5cyclictest0-21swapper/121:53:221
304799952,3cyclictest4511-21grep23:25:160
304799952,3cyclictest30596-21python20:10:200
304799952,3cyclictest0-21swapper/023:58:480
304799952,3cyclictest0-21swapper/023:31:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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