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2026-03-18 - 11:29
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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 Wed Mar 18, 2026 00:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
176582238222,11sleep10-21swapper/119:05:111
197202202165,31sleep00-21swapper/019:07:590
197232194176,13sleep30-21swapper/319:08:013
196302176157,14sleep20-21swapper/219:06:482
209732480,0sleep30-21swapper/322:46:443
58232470,1sleep05821-21perf19:45:010
36622450,0sleep10-21swapper/122:38:411
180532100,0sleep10-21swapper/123:01:031
200319991,4cyclictest7109-21perf23:59:590
1932290,0sleep30-21swapper/322:53:413
19698270,0sleep20-21swapper/223:18:142
200399961,3cyclictest0-21swapper/123:55:111
200459954,1cyclictest0-21swapper/322:56:253
200459953,1cyclictest6119-21cpuspeed00:15:123
200459950,5cyclictest0-21swapper/300:32:193
200459950,4cyclictest5802-21apt-get20:50:113
200459950,3cyclictest29663-21sh22:03:553
200459950,0cyclictest0-21swapper/300:04:133
200419955,0cyclictest0-21swapper/200:07:162
200419954,1cyclictest2159-21rm21:19:042
200419950,5cyclictest0-21swapper/223:43:242
200419950,5cyclictest0-21swapper/223:04:422
200419950,4cyclictest0-21swapper/222:20:102
200399951,2cyclictest0-21swapper/119:15:111
200399950,5cyclictest0-21swapper/122:09:281
200399950,5cyclictest0-21swapper/100:27:151
200319955,0cyclictest0-21swapper/023:15:390
200319950,5cyclictest3817-21ssh21:50:400
200319950,5cyclictest0-21swapper/021:56:370
200319950,5cyclictest0-21swapper/021:37:170
200319950,5cyclictest0-21swapper/021:20:120
200319950,5cyclictest0-21swapper/000:18:290
200319950,5cyclictest0-21swapper/000:04:580
200319950,3cyclictest9474-21cat22:10:000
200319950,0cyclictest0-21swapper/022:50:190
3852240,3sleep24072-21perl20:45:122
20097240,0sleep10-21swapper/123:50:111
200459943,1cyclictest6038-21/usr/sbin/munin19:45:163
200459943,1cyclictest1073-21/usr/sbin/munin19:35:123
200459943,0cyclictest40-21ksoftirqd/323:05:013
200459942,1cyclictest9049-21ssh21:37:503
200459942,1cyclictest28854-21ssh21:31:233
200459942,1cyclictest28789-21tr19:25:133
200459942,1cyclictest21808-21ssh21:12:373
200459942,1cyclictest14451-21cut23:15:193
200459941,3cyclictest814-21snmpd23:07:103
200459941,2cyclictest0-21swapper/319:30:093
200459941,1cyclictest0-21swapper/319:55:113
200459940,4cyclictest28633-21perl00:10:123
200459940,4cyclictest2066-21if_eth423:25:143
200459940,4cyclictest12301-21irqstats23:30:153
200459940,4cyclictest0-21swapper/322:40:123
200459940,4cyclictest0-21swapper/321:27:513
200459940,4cyclictest0-21swapper/321:20:123
200459940,4cyclictest0-21swapper/320:05:103
200459940,4cyclictest0-21swapper/320:00:163
200459940,4cyclictest0-21swapper/300:20:033
200459940,3cyclictest9083-21sh23:45:013
200459940,3cyclictest791-21latency_hist21:50:013
200459940,3cyclictest661-21sh00:28:213
200459940,3cyclictest3818-21sh23:57:593
200459940,3cyclictest31106-21perl22:20:133
200459940,3cyclictest29969-21ntp_states22:35:163
200459940,3cyclictest28529-21latency_hist19:25:013
200459940,3cyclictest26975-21perl21:15:123
200459940,3cyclictest2625-21/usr/sbin/munin21:50:173
200459940,3cyclictest23186-21munin-node19:15:023
200459940,3cyclictest2125-21ntp_states20:40:153
200459940,3cyclictest20359-21expr22:15:123
200459940,3cyclictest19224-21ssh23:50:003
200459940,3cyclictest16655-21sh21:57:153
200459940,3cyclictest13128-21munin-node21:40:123
200459940,3cyclictest12341-21sh22:10:363
200459940,3cyclictest1022-21rm22:05:193
200459940,3cyclictest0-21swapper/321:05:003
200459940,1cyclictest8129-21/usr/sbin/munin22:25:153
200459940,1cyclictest2745-21/usr/sbin/munin23:10:183
200459940,1cyclictest27120-21ntp_states20:25:183
200459940,1cyclictest21719-21grep23:35:133
200459940,1cyclictest13227-21/usr/sbin/munin21:05:143
200419944,0cyclictest0-21swapper/221:29:342
200419944,0cyclictest0-21swapper/220:28:352
200419944,0cyclictest0-21swapper/219:59:462
200419944,0cyclictest0-21swapper/200:30:332
200419943,1cyclictest30668-21gltestperf23:55:142
200419942,1cyclictest0-21swapper/223:20:132
200419941,3cyclictest21323-21ssh21:44:032
200419941,1cyclictest0-21swapper/220:40:082
200419940,4cyclictest28537-21ssh22:35:102
200419940,4cyclictest13600-21sh00:02:442
200419940,4cyclictest0-21swapper/223:45:132
200419940,4cyclictest0-21swapper/223:08:452
200419940,4cyclictest0-21swapper/222:50:102
200419940,4cyclictest0-21swapper/222:40:112
200419940,4cyclictest0-21swapper/222:30:132
200419940,4cyclictest0-21swapper/222:15:152
200419940,4cyclictest0-21swapper/222:01:202
200419940,4cyclictest0-21swapper/221:45:112
200419940,4cyclictest0-21swapper/221:36:152
200419940,4cyclictest0-21swapper/221:30:572
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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