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2025-12-26 - 12:04
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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 100 highest latencies:
System rack5slot2.osadl.org (updated Fri Dec 26, 2025 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
280232242226,11sleep10-21swapper/119:06:381
281482192176,11sleep00-21swapper/019:08:140
281402191175,12sleep20-21swapper/219:08:082
281462190173,12sleep30-21swapper/319:08:133
182872360,0sleep00-21swapper/020:55:170
284539993,3cyclictest27036-21munin-run20:10:000
284539971,5cyclictest0-21swapper/022:10:120
284539970,3cyclictest26724-21perf23:25:000
284659960,6cyclictest1458-21ls21:25:233
32168250,0sleep20-21swapper/223:35:132
284659953,1cyclictest27538-21cpuspeed_turbos21:15:173
284659950,5cyclictest0-21swapper/322:15:153
284659950,5cyclictest0-21swapper/320:55:233
284659950,4cyclictest0-21swapper/321:00:133
284659950,4cyclictest0-21swapper/320:15:153
284589953,2cyclictest0-21swapper/122:10:121
284589952,2cyclictest0-21swapper/119:10:111
284589951,3cyclictest0-21swapper/122:15:131
284589951,2cyclictest0-21swapper/123:20:121
284589951,2cyclictest0-21swapper/121:00:131
284589951,2cyclictest0-21swapper/120:50:121
284589951,2cyclictest0-21swapper/120:05:111
284589951,2cyclictest0-21swapper/100:25:121
284539954,1cyclictest14626-21munin-run20:50:000
284539950,5cyclictest0-21swapper/021:44:240
284539950,4cyclictest7424-21apt-get20:35:140
284539950,4cyclictest28574-21apt-get19:10:110
284539950,4cyclictest0-21swapper/000:30:110
284659943,1cyclictest32557-21grep20:20:123
284659943,1cyclictest19285-21perf23:10:003
284659942,1cyclictest0-21swapper/320:30:133
284659941,2cyclictest0-21swapper/322:45:143
284659941,2cyclictest0-21swapper/320:40:123
284659941,2cyclictest0-21swapper/300:15:123
284659941,1cyclictest321692grep23:35:133
284659941,1cyclictest0-21swapper/323:20:133
284659941,1cyclictest0-21swapper/321:55:143
284659941,1cyclictest0-21swapper/321:35:123
284659940,4cyclictest0-21swapper/323:55:113
284659940,4cyclictest0-21swapper/323:40:433
284659940,4cyclictest0-21swapper/323:15:123
284659940,4cyclictest0-21swapper/323:00:133
284659940,4cyclictest0-21swapper/322:30:123
284659940,4cyclictest0-21swapper/320:48:053
284659940,4cyclictest0-21swapper/320:00:123
284659940,3cyclictest7288-21apt-config20:35:003
284659940,3cyclictest5215-21perl19:25:143
284659940,3cyclictest4181-21apt-config19:25:003
284659940,3cyclictest335-21/usr/sbin/munin19:15:173
284659940,3cyclictest26022-21ntp_states21:10:213
284659940,3cyclictest17190-21readlink19:50:013
284659940,3cyclictest14360-21cat00:05:003
284659940,3cyclictest10699-21memory22:50:183
284659940,3cyclictest0-21swapper/320:05:113
284659940,1cyclictest29440-21munin-run22:25:003
284609944,0cyclictest31-21ksoftirqd/219:35:002
284609944,0cyclictest31-21ksoftirqd/200:35:142
284609943,1cyclictest15484-21hddtemp_smartct19:45:132
284609943,1cyclictest10191-21hddtemp_smartct23:55:142
284609942,2cyclictest774-21snmpd23:07:292
284609941,3cyclictest31047-21kworker/2:020:35:402
284609940,4cyclictest9132-21munin-run23:55:002
284609940,4cyclictest27552-21cut21:15:162
284609940,4cyclictest11184-21ntp_states20:40:182
284609940,4cyclictest0-21swapper/222:40:102
284609940,4cyclictest0-21swapper/222:25:122
284609940,4cyclictest0-21swapper/222:05:132
284609940,4cyclictest0-21swapper/219:10:112
284609940,3cyclictest29606-21cat22:25:002
284609940,3cyclictest28204-21if_eth120:10:162
284609940,3cyclictest19603-21latency_hist19:55:002
284609940,3cyclictest18280-21irqstats22:00:162
284609940,3cyclictest15867-21ntp_states21:55:182
284609940,3cyclictest14520-21cut21:55:012
284609940,3cyclictest14087-21apt-get00:05:022
284609940,1cyclictest29135-21latency_hist00:35:002
284589944,0cyclictest0-21swapper/120:25:181
284589943,1cyclictest0-21swapper/121:25:151
284589942,1cyclictest0-21swapper/122:45:141
284589942,1cyclictest0-21swapper/121:35:121
284589942,1cyclictest0-21swapper/120:30:131
284589941,2cyclictest0-21swapper/123:25:131
284589941,2cyclictest0-21swapper/122:55:141
284589941,2cyclictest0-21swapper/122:50:141
284589941,2cyclictest0-21swapper/122:25:121
284589941,2cyclictest0-21swapper/122:05:131
284589941,2cyclictest0-21swapper/121:40:121
284589941,2cyclictest0-21swapper/121:30:131
284589941,2cyclictest0-21swapper/121:20:131
284589941,2cyclictest0-21swapper/121:15:151
284589941,2cyclictest0-21swapper/120:20:111
284589941,2cyclictest0-21swapper/120:15:151
284589941,2cyclictest0-21swapper/119:45:111
284589941,2cyclictest0-21swapper/119:25:121
284589941,2cyclictest0-21swapper/100:35:141
284589941,2cyclictest0-21swapper/100:15:121
284589940,0cyclictest0-21swapper/122:30:181
284539944,0cyclictest0-21swapper/022:21:210
284539942,1cyclictest758-21runrttasks00:05:170
284539940,4cyclictest22625-21cpuspeed_turbos21:05:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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