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2025-12-25 - 10:09
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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 rackeslot5.osadl.org (updated Thu Dec 25, 2025 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25406994312,13cyclictest151rcu_preempt19:37:492
25405993028,1cyclictest4250-21cron23:00:001
25405993028,1cyclictest32306-21cron19:25:011
25405993027,2cyclictest9497-21sh00:20:011
25404993028,2cyclictest20906-21cron20:10:010
25407992927,1cyclictest621-21dbus-daemon22:50:013
2540799290,28cyclictest0-21swapper/320:50:143
2540699290,28cyclictest5759-21munin-run21:55:002
2540699290,28cyclictest2566-21apt-get19:30:102
2540699290,28cyclictest20816-21apt-get23:35:132
2540699290,1cyclictest649-21gdbus22:00:002
2540599290,28cyclictest0-21swapper/120:50:131
25404992928,1cyclictest27317-21unixbench-2d23:45:200
2540499290,28cyclictest0-21swapper/023:20:120
2540499290,28cyclictest0-21swapper/022:50:130
2540499290,28cyclictest0-21swapper/021:50:130
2540499290,1cyclictest0-21swapper/021:05:130
2540799280,28cyclictest0-21swapper/323:00:123
2540799280,27cyclictest16548-21apt-get20:00:143
2540799280,0cyclictest4894-21apt-get19:35:123
2540699280,27cyclictest0-21swapper/222:05:112
2540699280,27cyclictest0-21swapper/200:35:022
2540699280,0cyclictest0-21swapper/223:20:112
25405992828,0cyclictest23464-21apt-get23:40:121
25405992826,1cyclictest19995-21cron22:25:011
25405992825,2cyclictest7476-21sh20:50:001
2540599280,27cyclictest0-21swapper/120:40:101
25404992828,0cyclictest0-21swapper/023:35:120
25404992828,0cyclictest0-21swapper/023:25:140
2540499280,0cyclictest0-21swapper/021:35:120
25407992727,0cyclictest7237-21apt-get19:40:133
25407992727,0cyclictest694-21apt-get20:35:123
25407992727,0cyclictest14744-21apt-get21:05:123
25407992727,0cyclictest10081-21apt-get20:55:123
25407992727,0cyclictest0-21swapper/323:50:123
25407992727,0cyclictest0-21swapper/322:50:143
25407992727,0cyclictest0-21swapper/319:45:123
2540799270,27cyclictest0-21swapper/321:35:133
2540799270,0cyclictest0-21swapper/319:25:113
25406992727,0cyclictest29911-21apt-get22:45:132
25406992727,0cyclictest0-21swapper/220:45:132
25406992727,0cyclictest0-21swapper/200:25:122
2540699272,25cyclictest0-21swapper/223:55:202
2540699270,0cyclictest7760-21apt-get20:50:132
2540699270,0cyclictest0-21swapper/222:20:122
2540699270,0cyclictest0-21swapper/222:10:102
2540699270,0cyclictest0-21swapper/220:25:122
25405992727,0cyclictest0-21swapper/123:30:131
25405992727,0cyclictest0-21swapper/120:25:121
25405992727,0cyclictest0-21swapper/100:35:101
2540599270,0cyclictest0-21swapper/121:25:191
25404992727,0cyclictest0-21swapper/022:15:120
25404992727,0cyclictest0-21swapper/021:10:130
25404992727,0cyclictest0-21swapper/020:55:110
25404992727,0cyclictest0-21swapper/000:30:130
25407992626,0cyclictest25616-21apt-get19:10:123
25407992625,1cyclictest7200-21perf00:15:013
25406992613,13cyclictest151rcu_preempt19:49:032
25405992626,0cyclictest0-21swapper/122:10:101
25407992525,0cyclictest25796-21apt-get23:45:123
25407992525,0cyclictest0-21swapper/321:40:133
25407992525,0cyclictest0-21swapper/300:15:123
25407992524,1cyclictest24934-21apt-get22:35:123
25406992525,0cyclictest0-21swapper/223:05:122
25406992525,0cyclictest0-21swapper/222:30:152
25406992523,1cyclictest29990-21sendmail-msp19:20:012
25405992525,0cyclictest0-21swapper/123:45:121
25405992525,0cyclictest0-21swapper/123:20:121
25405992525,0cyclictest0-21swapper/100:10:131
25405992523,1cyclictest1055-21munin-run21:45:001
25404992525,0cyclictest0-21swapper/019:45:130
25404992525,0cyclictest0-21swapper/000:20:110
25407992424,0cyclictest30223-21apt-get20:30:003
25407992424,0cyclictest24057-21apt-get21:25:113
25407992424,0cyclictest0-21swapper/321:20:103
25406992422,1cyclictest12132-21sh21:00:002
25406992422,1cyclictest1027-21cron21:45:002
2540699240,24cyclictest0-21swapper/220:45:002
2540699240,24cyclictest0-21swapper/220:22:362
25405992424,0cyclictest0-21swapper/123:10:121
25405992424,0cyclictest0-21swapper/100:20:121
25407992323,0cyclictest0-21swapper/320:10:133
25406992323,0cyclictest26441-21apt-get21:30:132
25406992323,0cyclictest26441-21apt-get21:30:132
25406992323,0cyclictest12425-21apt-get21:00:122
25406992323,0cyclictest0-21swapper/222:15:102
25406992323,0cyclictest0-21swapper/221:15:122
25406992323,0cyclictest0-21swapper/221:10:122
25406992322,1cyclictest0-21swapper/200:40:022
25405992323,0cyclictest0-21swapper/123:25:151
25405992323,0cyclictest0-21swapper/121:15:131
25405992323,0cyclictest0-21swapper/120:30:131
25404992323,0cyclictest0-21swapper/020:35:120
25407992222,0cyclictest0-21swapper/321:45:113
25407992220,1cyclictest21444-21sendmail-msp21:20:003
25406992222,0cyclictest0-21swapper/220:15:122
25406992222,0cyclictest0-21swapper/219:40:132
25404992222,0cyclictest0-21swapper/022:30:140
25404992222,0cyclictest0-21swapper/019:55:130
25404992222,0cyclictest0-21swapper/019:35:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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