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2026-04-11 - 08:25
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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 Apr 11, 2026 00:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
166712197181,12sleep00-21swapper/019:07:410
167872193177,11sleep30-21swapper/319:09:143
167402177162,11sleep10-21swapper/119:08:361
165202164145,14sleep20-21swapper/219:05:482
283102520,0sleep30-21swapper/322:04:443
46452490,0sleep10-21swapper/121:21:021
305692470,0sleep30-21swapper/321:34:183
91492440,0sleep10-21swapper/121:55:121
45912430,0sleep30-21swapper/300:30:563
208282430,0sleep00-21swapper/000:07:150
20952400,0sleep20-21swapper/221:20:142
93682390,0sleep29370-21fschecks_count21:55:142
170399970,6cyclictest0-21swapper/221:05:112
170359973,4cyclictest22141-21perf23:05:000
6431260,0sleep10-21swapper/100:00:161
170439960,6cyclictest28476-21df20:35:123
170399966,0cyclictest31-21ksoftirqd/223:00:122
3240250,0sleep10-21swapper/121:36:081
30406250,0sleep00-21swapper/022:20:380
170439952,3cyclictest802-21snmpd21:22:353
170439950,5cyclictest0-21swapper/323:13:583
170439950,5cyclictest0-21swapper/323:13:583
170439950,5cyclictest0-21swapper/321:44:193
170439950,5cyclictest0-21swapper/319:20:093
170439950,4cyclictest15680-21apt-get00:05:133
170439950,3cyclictest25485-21ssh23:53:563
170399954,1cyclictest12535-21perl21:25:152
170399950,5cyclictest16171-21grep22:45:202
170399950,5cyclictest0-21swapper/223:33:482
170399950,5cyclictest0-21swapper/222:23:482
170399950,5cyclictest0-21swapper/222:17:422
170399950,5cyclictest0-21swapper/221:38:172
170399950,4cyclictest29779-21ssh22:36:202
170399950,0cyclictest0-21swapper/220:40:212
170369951,2cyclictest0-21swapper/122:45:131
170369951,2cyclictest0-21swapper/122:40:111
170369951,2cyclictest0-21swapper/120:55:101
170369951,2cyclictest0-21swapper/119:40:121
170369951,2cyclictest0-21swapper/119:25:121
170369950,5cyclictest0-21swapper/100:26:201
170359954,1cyclictest0-21swapper/000:30:410
170359950,5cyclictest0-21swapper/022:59:360
170359950,5cyclictest0-21swapper/021:23:340
170359950,5cyclictest0-21swapper/000:24:250
170359950,4cyclictest0-21swapper/021:35:110
170359950,1cyclictest10323-21munin-run23:15:010
170359950,1cyclictest10323-21munin-run23:15:010
11008250,0sleep10-21swapper/100:34:551
7819240,0sleep20-21swapper/222:57:322
19132240,0sleep10-21swapper/100:38:381
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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