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2025-12-18 - 12:36
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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 Thu Dec 18, 2025 00:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
274852240225,11sleep10-21swapper/119:05:261
274822202167,30sleep30-21swapper/319:05:243
274992186169,12sleep00-21swapper/019:05:370
275882156138,13sleep20-21swapper/219:06:482
280199992,3cyclictest26147-21perf20:10:010
280199992,3cyclictest1044-21munin-run22:35:000
280199971,3cyclictest11102-21munin-run23:59:590
280199970,6cyclictest0-21swapper/000:15:110
280269960,5cyclictest0-21swapper/322:55:113
280209961,3cyclictest0-21swapper/123:45:111
280209961,3cyclictest0-21swapper/122:20:111
280199960,3cyclictest16028-21apt-get19:50:010
280269950,4cyclictest16448-21apt-get19:50:023
280209952,2cyclictest0-21swapper/122:25:111
280209952,2cyclictest0-21swapper/120:25:111
280209951,3cyclictest0-21swapper/123:10:101
280209951,3cyclictest0-21swapper/120:35:121
280209951,2cyclictest0-21swapper/122:55:111
280209951,2cyclictest0-21swapper/122:10:111
280209951,2cyclictest0-21swapper/121:15:111
280209951,2cyclictest0-21swapper/121:00:131
280209951,2cyclictest0-21swapper/119:50:121
280209950,5cyclictest0-21swapper/123:04:041
280209950,4cyclictest0-21swapper/120:10:091
280269944,0cyclictest28826-21cut19:10:093
280269943,1cyclictest11043-21idleruntime-cro20:45:003
280269941,1cyclictest0-21swapper/322:15:113
280269940,4cyclictest0-21swapper/322:05:123
280269940,4cyclictest0-21swapper/321:55:103
280269940,4cyclictest0-21swapper/321:00:133
280269940,4cyclictest0-21swapper/320:55:123
280269940,4cyclictest0-21swapper/320:15:183
280269940,4cyclictest0-21swapper/319:35:013
280269940,3cyclictest3766-21latency_hist21:35:003
280269940,3cyclictest31294-21wc23:35:013
280269940,3cyclictest17084-21perl22:00:153
280269940,3cyclictest13704-21sed00:05:003
280269940,3cyclictest11093-21latency_hist23:59:593
280269940,3cyclictest0-21swapper/323:10:023
280269940,3cyclictest0-21swapper/300:10:113
280269940,1cyclictest6245-21munin-run21:40:013
280269940,1cyclictest28688-21munin-run23:30:013
280269940,1cyclictest1192-21latency_hist23:40:003
280229943,1cyclictest19171-21cpuspeed19:55:112
280229942,1cyclictest26885-21diskstats20:10:102
280229941,2cyclictest774-21snmpd23:15:132
280229941,2cyclictest0-21swapper/221:20:122
280229941,1cyclictest1-21systemd20:00:122
280229941,1cyclictest0-21swapper/221:10:112
280229940,4cyclictest17300-21hddtemp_smartct19:50:142
280229940,4cyclictest0-21swapper/223:55:112
280229940,4cyclictest0-21swapper/223:21:322
280229940,4cyclictest0-21swapper/222:50:152
280229940,3cyclictest4415-21df19:25:122
280229940,3cyclictest3067-21timerandwakeup23:40:182
280229940,3cyclictest26555-21cstates00:30:132
280229940,3cyclictest16799-21df00:10:132
280229940,3cyclictest1484-21sed21:30:012
280229940,3cyclictest0-21swapper/221:30:122
280229940,1cyclictest32653-21ntp_states23:35:192
280209944,0cyclictest0-21swapper/122:44:161
280209942,1cyclictest0-21swapper/122:45:111
280209941,2cyclictest0-21swapper/123:55:111
280209941,2cyclictest0-21swapper/123:50:091
280209941,2cyclictest0-21swapper/123:30:111
280209941,2cyclictest0-21swapper/123:25:101
280209941,2cyclictest0-21swapper/123:20:141
280209941,2cyclictest0-21swapper/123:15:121
280209941,2cyclictest0-21swapper/123:05:111
280209941,2cyclictest0-21swapper/122:35:121
280209941,2cyclictest0-21swapper/121:55:101
280209941,2cyclictest0-21swapper/121:40:101
280209941,2cyclictest0-21swapper/121:30:121
280209941,2cyclictest0-21swapper/121:10:121
280209941,2cyclictest0-21swapper/120:45:101
280209941,2cyclictest0-21swapper/120:20:121
280209941,2cyclictest0-21swapper/120:15:111
280209941,2cyclictest0-21swapper/120:05:131
280209941,2cyclictest0-21swapper/120:00:121
280209941,2cyclictest0-21swapper/119:35:121
280209941,2cyclictest0-21swapper/100:10:101
280209941,1cyclictest0-21swapper/120:30:111
280209941,1cyclictest0-21swapper/119:45:111
280209940,4cyclictest0-21swapper/122:07:451
280209940,3cyclictest0-21swapper/120:40:111
280209940,2cyclictest0-21swapper/121:25:121
280209940,2cyclictest0-21swapper/121:20:111
280209940,2cyclictest0-21swapper/119:55:091
280209940,2cyclictest0-21swapper/119:40:121
280199943,1cyclictest3767-21apt-get22:40:120
280199943,1cyclictest30210-21grep21:20:170
280199943,1cyclictest28721-21tr00:35:120
280199943,1cyclictest1272-21/usr/sbin/munin22:35:150
280199940,4cyclictest6909-21diskstats23:50:120
280199940,4cyclictest12465-21irqstats20:45:130
280199940,4cyclictest0-21swapper/023:30:120
280199940,4cyclictest0-21swapper/023:10:010
280199940,4cyclictest0-21swapper/022:45:120
280199940,4cyclictest0-21swapper/022:28:310
280199940,4cyclictest0-21swapper/022:05:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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