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2026-04-18 - 06:14
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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 Sat Apr 18, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
251482307257,41sleep10-21swapper/119:08:141
250922296271,16sleep20-21swapper/219:07:302
249982277249,19sleep30-21swapper/319:06:183
249682258228,19sleep00-21swapper/019:05:560
326982670,0sleep30-21swapper/322:39:123
147892650,0sleep20-21swapper/223:27:002
287862610,0sleep00-21swapper/019:15:120
290312600,0sleep20-21swapper/221:37:162
169182600,0sleep20-21swapper/221:30:112
99342590,0sleep20-21swapper/221:45:182
108972590,0sleep10-21swapper/121:25:541
297552580,0sleep10-21swapper/121:57:341
172882580,0sleep2271rcuc/223:09:142
182972570,0sleep00-21swapper/023:10:010
287942540,0sleep122-21ksoftirqd/121:17:211
29112210,1sleep22866-21idleruntime-cro00:00:002
63302180,0sleep30-21swapper/321:23:453
318662170,0sleep00-21swapper/021:59:130
25384991411,2cyclictest12-21ksoftirqd/021:40:010
160862130,0sleep30-21swapper/300:07:183
280722100,1sleep028071-21rm23:55:130
253979997,1cyclictest34-21ksoftirqd/320:40:003
26080280,0sleep20-21swapper/221:55:162
253979981,2cyclictest141rcu_preempt21:00:113
253929983,3cyclictest275-21systemd-journal19:25:012
253929983,3cyclictest275-21systemd-journal19:25:012
253929981,4cyclictest32618-21idleruntime-cro20:35:002
253929981,2cyclictest9160-21apt-get22:05:132
17416280,1sleep017419-21latency_hist22:30:010
253979976,1cyclictest34-21ksoftirqd/323:40:013
253979973,3cyclictest658-21snmpd22:43:493
253979973,3cyclictest658-21snmpd19:50:323
253979973,3cyclictest275-21systemd-journal23:00:003
253979973,3cyclictest20087-21ntpq23:30:163
253929976,1cyclictest16341-21ssh23:48:002
253929976,1cyclictest0-21swapper/200:12:312
253929975,1cyclictest1469-21ssh23:39:192
253929974,2cyclictest27563-21cron19:15:022
253929973,3cyclictest658-21snmpd20:39:332
253929973,3cyclictest504-21dbus-daemon20:45:002
253929970,6cyclictest15783-21diskmemload21:20:012
253889975,1cyclictest32316-21ssh22:38:551
253889973,3cyclictest674-21lldpd21:23:281
253889973,3cyclictest504-21dbus-daemon23:16:261
253889973,3cyclictest275-21systemd-journal20:40:481
253889973,2cyclictest275-21systemd-journal20:37:511
253889973,2cyclictest275-21systemd-journal19:15:321
253889972,3cyclictest275-21systemd-journal19:55:391
253889970,3cyclictest28200-21hddtemp_smartct23:55:141
253849975,1cyclictest12-21ksoftirqd/000:40:000
253849973,3cyclictest275-21systemd-journal22:16:070
253849973,1cyclictest0-21swapper/000:18:310
253849972,3cyclictest8691-21idleruntime-cro22:05:000
2526270,0sleep30-21swapper/323:59:463
12051270,0sleep20-21swapper/222:45:372
30039260,0sleep20-21swapper/222:37:072
253979965,1cyclictest34-21ksoftirqd/320:15:003
253979965,1cyclictest34-21ksoftirqd/319:15:023
253979963,2cyclictest7626-21ssh22:04:123
253979963,2cyclictest504-21dbus-daemon20:00:003
253979963,2cyclictest3773-21sort23:00:203
253979963,2cyclictest32646-21sh00:17:283
253979963,2cyclictest3232-21cups-browsed00:00:183
253979963,2cyclictest2980-21ssh21:40:503
253979963,2cyclictest27688-21cut23:15:143
253979963,2cyclictest27512-21sshd20:20:443
253979963,2cyclictest27011-21ssh00:14:273
253979963,2cyclictest26294-21uniq22:15:143
253979963,2cyclictest22685-21ssh22:52:313
253979963,2cyclictest21568-21ssh22:12:063
253979963,2cyclictest17315-21sh23:29:003
253979963,2cyclictest13606-21ssh23:45:493
253979963,2cyclictest12801-21sh21:27:223
253979962,3cyclictest658-21snmpd22:33:493
253979962,3cyclictest658-21snmpd20:56:253
253979962,3cyclictest658-21snmpd19:10:263
253979962,3cyclictest658-21snmpd00:31:403
253979962,3cyclictest5185-21expr20:45:123
253979962,3cyclictest4071-21sensors_temp23:20:173
253979962,3cyclictest3254-21diskstats23:40:133
253979962,3cyclictest2274-21cat22:20:143
253979962,3cyclictest19651-21sshd21:51:033
253979962,3cyclictest16533-21expr21:10:123
253979962,1cyclictest0-21swapper/323:10:163
253979962,1cyclictest0-21swapper/323:05:263
253979962,1cyclictest0-21swapper/300:37:433
253979961,0cyclictest141rcu_preempt22:45:103
253979960,6cyclictest0-21swapper/321:56:383
253979960,6cyclictest0-21swapper/321:32:123
253979960,6cyclictest0-21swapper/300:25:183
253979960,5cyclictest4249-21awk19:30:163
253979960,4cyclictest275-21systemd-journal22:26:193
253979960,3cyclictest14775-21ssh21:48:393
253979960,0cyclictest0-21swapper/321:39:043
253979960,0cyclictest0-21swapper/321:15:163
253929966,0cyclictest0-21swapper/223:17:332
253929966,0cyclictest0-21swapper/200:25:162
253929963,2cyclictest7274-21ssh22:03:552
253929963,2cyclictest6953-21ssh22:23:132
253929963,2cyclictest658-21snmpd00:31:072
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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