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2025-11-07 - 13:16
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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 rack4slot6.osadl.org (updated Fri Nov 07, 2025 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18450521400,131pltrace0-21swapper/619:09:356
18450521380,134pltrace0-21swapper/119:09:271
15660521230,116pltrace0-21swapper/519:05:175
15660521170,109pltrace0-21swapper/219:05:212
15660521140,96pltrace0-21swapper/319:06:193
15660521130,108pltrace0-21swapper/719:06:297
4808521000,0pltrace0-21swapper/720:36:357
1859826441,19sleep00-21swapper/019:08:340
1835026240,17sleep40-21swapper/419:05:264
315852340,0pltrace0-21swapper/721:35:117
1877652330,0pltrace0-21swapper/721:05:207
84952310,2pltrace0-21swapper/700:22:047
2773552290,6pltrace78-21ksoftirqd/719:21:367
148872270,0sleep30-21swapper/320:55:173
2271152260,3pltrace0-21swapper/722:10:127
1891599239,13cyclictest0-21swapper/419:15:194
369752220,4pltrace6363-21uptime00:30:277
1890799220,15cyclictest0-21swapper/221:44:272
1891099211,4cyclictest0-21swapper/320:51:333
1889999211,19cyclictest0-21swapper/023:50:220
1652852210,0pltrace0-21swapper/723:51:577
1992252200,5pltrace0-21swapper/722:01:387
1541952200,4pltrace0-21swapper/722:51:477
370352190,4pltrace0-21swapper/719:40:207
18904991912,6cyclictest0-21swapper/123:32:381
18899991914,4cyclictest0-21swapper/020:42:550
18899991914,4cyclictest0-21swapper/020:42:550
927652180,13pltrace9407-21sshd00:38:241
2997652180,4pltrace0-21swapper/721:25:167
2326052180,0pltrace0-21swapper/720:13:517
873652170,4pltrace0-21swapper/721:43:427
3162852170,4pltrace0-21swapper/720:28:497
3162852170,0pltrace0-21swapper/720:30:137
2939752170,12pltrace54-21ksoftirqd/423:18:534
2604752170,4pltrace0-21swapper/720:20:387
18919991711,5cyclictest0-21swapper/521:15:565
18919991711,3cyclictest0-21swapper/521:32:335
18904991711,5cyclictest0-21swapper/122:28:191
1889999174,8cyclictest23857-21/usr/sbin/munin19:15:130
1889999172,14cyclictest0-21swapper/021:20:000
1889999171,8cyclictest0-21swapper/023:45:320
705052160,4pltrace7115-21taskset22:37:282
705052160,0pltrace0-21swapper/722:39:007
2550252160,1pltrace0-21swapper/722:15:197
2381452160,3pltrace0-21swapper/723:09:447
2131452160,4pltrace24678-21timerwakeupswit19:15:211
18924991613,2cyclictest0-21swapper/621:15:216
1891999165,5cyclictest0-21swapper/521:58:385
1891999163,5cyclictest1127-21polkitd21:00:005
18919991611,3cyclictest0-21swapper/522:53:085
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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