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2026-08-30 - 05:31
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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 rackaslot8.osadl.org (updated Sun Aug 30, 2026 00:44:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40592300270,20sleep20-21swapper/219:06:482
40802276243,22sleep10-21swapper/119:07:031
42462274240,20sleep00-21swapper/019:09:030
42282270238,21sleep30-21swapper/319:08:503
141892800,0sleep00-21swapper/023:58:050
19022610,0sleep00-21swapper/000:30:120
325342580,0sleep20-21swapper/222:11:322
18562570,0sleep30-21swapper/323:30:293
138232570,0sleep10-21swapper/123:18:501
47672560,0sleep20-21swapper/222:53:482
204402560,0sleep20-21swapper/221:45:092
7872550,0sleep10-21swapper/121:32:541
315132550,0sleep10-21swapper/100:28:131
23882550,0sleep20-21swapper/200:10:162
317822180,0sleep30-21swapper/321:31:483
258162180,0chrt0-21swapper/122:27:161
128552180,0sleep20-21swapper/221:20:162
301332170,0sleep10-21swapper/122:49:471
9872140,0sleep10-21swapper/121:13:241
30152140,0sleep10-21swapper/123:31:231
316432120,0sleep30-21swapper/300:08:493
443099107,2cyclictest34-21ksoftirqd/320:45:013
8744290,0sleep30-21swapper/323:15:193
6752290,0sleep20-21swapper/200:32:462
44309997,1cyclictest34-21ksoftirqd/319:50:013
44259984,3cyclictest24240-11brltty22:39:012
44259982,3cyclictest32521-21dump-pmu-power23:50:002
44259982,3cyclictest20539-21munin-run22:05:012
44219981,3cyclictest12856-21idleruntime-cro22:20:011
32325280,0sleep30-21swapper/321:12:343
44309976,1cyclictest34-21ksoftirqd/320:30:013
44309974,2cyclictest275-21systemd-journal22:02:213
44309973,3cyclictest30727-21snmpd20:11:393
44309973,3cyclictest275-21systemd-journal21:53:043
44309973,3cyclictest275-21systemd-journal21:22:583
44309973,3cyclictest275-21systemd-journal20:10:013
44309973,3cyclictest275-21systemd-journal00:28:123
44309972,3cyclictest275-21systemd-journal00:12:573
44259974,2cyclictest28-21ksoftirqd/222:00:012
44259973,3cyclictest5299-21cat19:10:152
44259973,3cyclictest18274-21apt-get20:50:122
44259972,3cyclictest275-21systemd-journal21:16:422
44259971,3cyclictest4661-21munin-run20:20:012
44219975,2cyclictest22-21ksoftirqd/119:25:001
44219973,3cyclictest275-21systemd-journal23:07:511
44219973,3cyclictest275-21systemd-journal21:57:101
44219973,3cyclictest275-21systemd-journal00:08:121
44219973,3cyclictest16326-21users19:30:221
44219973,2cyclictest275-21systemd-journal00:02:121
44219970,7cyclictest27275-21ssh23:45:571
44199973,3cyclictest6363-21sshd19:12:130
44199973,3cyclictest275-21systemd-journal22:52:110
44199973,3cyclictest275-21systemd-journal19:50:010
44199973,3cyclictest275-21systemd-journal00:37:120
44199973,2cyclictest674-21lldpd22:29:300
44199971,4cyclictest22444-21cron21:00:010
44199970,1cyclictest0-21swapper/023:06:390
22594270,0sleep20-21swapper/223:43:412
20426270,0sleep10-21swapper/122:43:541
20426270,0sleep10-21swapper/122:43:541
10694270,0sleep30-21swapper/319:20:153
44309966,0cyclictest0-21swapper/323:56:573
44309966,0cyclictest0-21swapper/322:30:213
44309964,1cyclictest34-21ksoftirqd/319:50:013
44309964,1cyclictest20692-21irqstats21:25:143
44309963,2cyclictest8917-21ssh22:55:373
44309963,2cyclictest6291-21chrt19:11:303
44309963,2cyclictest30727-21snmpd21:09:313
44309963,2cyclictest30727-21snmpd19:15:443
44309963,2cyclictest30277-21ssh22:10:173
44309963,2cyclictest275-21systemd-journal00:02:203
44309963,2cyclictest25182-21grep23:25:173
44309963,2cyclictest23937-21tune2fs23:05:143
44309963,2cyclictest23208-21grep21:00:143
44309963,2cyclictest22940-21expr22:45:143
44309963,2cyclictest21036-21ssh00:21:303
44309963,2cyclictest17198-21systemctl20:45:193
44309963,2cyclictest17198-21systemctl20:45:193
44309963,2cyclictest15166-21diskstats19:30:143
44309963,2cyclictest12521-21ssh00:16:223
44309963,2cyclictest10490-21sh21:19:243
44309962,3cyclictest6118-21sed21:55:213
44309962,3cyclictest30727-21snmpd23:48:343
44309962,3cyclictest30727-21snmpd23:24:453
44309962,3cyclictest30727-21snmpd23:03:033
44309962,3cyclictest30727-21snmpd22:17:433
44309962,3cyclictest30727-21snmpd22:05:403
44309962,3cyclictest30727-21snmpd21:46:313
44309962,3cyclictest30727-21snmpd20:38:423
44309962,3cyclictest30727-21snmpd20:23:123
44309962,3cyclictest30727-21snmpd19:36:503
44309962,3cyclictest30727-21snmpd19:25:443
44309962,3cyclictest30727-21snmpd00:30:263
44309962,3cyclictest275-21systemd-journal22:40:013
44309962,3cyclictest275-21systemd-journal20:18:203
44309962,3cyclictest14779-21hostname22:40:163
44309962,3cyclictest14779-21hostname22:40:163
44309962,3cyclictest14154-21expr22:20:163
44309962,1cyclictest0-21swapper/323:35:243
44309961,1cyclictest30942-21apt-get22:50:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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