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2026-07-20 - 08:36
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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 rackaslot8.osadl.org (updated Mon Jul 20, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
221722298271,18sleep10-21swapper/119:08:071
222082271240,20sleep00-21swapper/019:08:350
221782271243,18sleep20-21swapper/219:08:122
220702262238,16sleep30-21swapper/319:06:483
234721030,2sleep0141rcu_preempt23:20:200
23572640,0sleep00-21swapper/021:23:320
240682590,0sleep20-21swapper/221:16:362
208292540,0sleep20-21swapper/200:10:442
104972530,0sleep30-21swapper/323:25:203
310052520,0sleep30-21swapper/319:25:193
154532520,0sleep30-21swapper/321:11:223
267402190,0sleep20-21swapper/219:15:212
262052160,0sleep10-21swapper/100:14:541
50532150,0sleep20-21swapper/222:43:222
194572130,0sleep10-21swapper/100:30:121
299262110,0sleep20-21swapper/222:58:332
2240699106,3cyclictest19824-21turbostat20:15:000
224169996,3cyclictest28-21ksoftirqd/221:25:102
224219983,3cyclictest674-21lldpd20:43:543
224219983,3cyclictest674-21lldpd20:43:543
1432280,0sleep00-21swapper/022:20:590
224219975,2cyclictest34-21ksoftirqd/319:25:013
224219974,2cyclictest275-21systemd-journal21:45:293
224219974,2cyclictest275-21systemd-journal20:17:303
224219973,3cyclictest7375-21sshd20:59:293
224219973,3cyclictest275-21systemd-journal21:02:563
224219973,1cyclictest0-21swapper/322:43:033
224219973,1cyclictest0-21swapper/321:35:183
224219972,3cyclictest275-21systemd-journal22:04:453
224219970,5cyclictest275-21systemd-journal21:21:343
224169975,1cyclictest28-21ksoftirqd/221:40:002
224169973,3cyclictest275-21systemd-journal21:57:142
224169972,4cyclictest271rcuc/219:40:002
224169972,3cyclictest275-21systemd-journal22:52:212
224169972,3cyclictest13785-21idleruntime-cro21:50:012
224119976,1cyclictest0-21swapper/122:19:161
224119974,2cyclictest13011-21ssh23:26:591
224119973,3cyclictest658-21snmpd21:40:101
224119973,3cyclictest504-21dbus-daemon23:30:191
224119973,3cyclictest491-21systemd-logind00:00:321
224119973,2cyclictest275-21systemd-journal19:51:141
224069974,2cyclictest504-21dbus-daemon19:50:010
224069974,2cyclictest10926-21dump-pmu-power19:55:010
224069973,3cyclictest658-21snmpd23:30:530
224069973,3cyclictest560-21gdbus21:45:000
224069973,3cyclictest31893-21cron19:30:000
17494270,0sleep00-21swapper/023:10:150
224219966,0cyclictest0-21swapper/323:01:003
224219966,0cyclictest0-21swapper/300:16:043
224219966,0cyclictest0-21swapper/300:06:253
224219964,1cyclictest15462-21apt-get22:30:133
224219964,1cyclictest1544-21/usr/sbin/munin23:40:183
224219963,2cyclictest674-21lldpd22:25:353
224219963,2cyclictest504-21dbus-daemon20:07:293
224219963,2cyclictest29083-21ssh23:36:373
224219963,2cyclictest24183-21ssh00:13:223
224219963,2cyclictest22800-21ssh22:15:023
224219963,2cyclictest22772-21expr21:55:143
224219963,2cyclictest20045-21ssh22:52:143
224219963,2cyclictest15134-21expr22:10:133
224219963,2cyclictest14733-21sh23:08:503
224219963,2cyclictest10670-21ssh22:46:213
224219962,3cyclictest7029-21tune2fs22:05:173
224219962,3cyclictest658-21snmpd23:15:193
224219962,3cyclictest658-21snmpd22:55:243
224219962,3cyclictest658-21snmpd20:35:293
224219962,3cyclictest658-21snmpd20:27:333
224219962,3cyclictest658-21snmpd19:47:363
224219962,3cyclictest658-21snmpd19:34:013
224219962,3cyclictest5410-21ls21:25:133
224219962,3cyclictest31200-21grep21:40:173
224219962,3cyclictest27858-21cat23:55:193
224219962,3cyclictest275-21systemd-journal21:06:303
224219962,3cyclictest21753-21ntpq21:15:183
224219962,3cyclictest18449-21expr20:10:153
224219962,3cyclictest18447-21cat23:50:123
224219962,3cyclictest17490-21cat23:30:123
224219962,1cyclictest0-21swapper/300:02:073
224219961,4cyclictest8961-21apt-get19:50:123
224219961,4cyclictest11118-21ssh00:25:113
224219961,2cyclictest504-21dbus-daemon00:35:133
224219960,6cyclictest0-21swapper/323:11:003
224219960,6cyclictest0-21swapper/322:35:373
224219960,6cyclictest0-21swapper/321:54:293
224219960,6cyclictest0-21swapper/320:04:323
224219960,6cyclictest0-21swapper/300:21:073
224219960,2cyclictest31287-21/usr/sbin/munin22:20:143
224219960,2cyclictest20673-21smart_sda00:30:203
224169966,0cyclictest0-21swapper/223:49:112
224169966,0cyclictest0-21swapper/222:12:432
224169966,0cyclictest0-21swapper/200:37:462
224169963,2cyclictest9074-21ssh23:25:092
224169963,2cyclictest8722-21ssh00:04:052
224169963,2cyclictest658-21snmpd23:06:462
224169963,2cyclictest5579-21cpuspeed_turbos20:55:142
224169963,2cyclictest29381-21cat20:35:142
224169963,2cyclictest22156-21rm23:13:112
224169963,2cyclictest16334-21chrt22:30:172
224169963,2cyclictest15961-21/usr/sbin/munin21:50:212
224169963,2cyclictest13872-21memory21:30:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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