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2026-05-07 - 08:18
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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 Thu May 07, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
105152328296,21sleep20-21swapper/219:08:392
105922324294,20sleep10-21swapper/119:09:381
104092262230,21sleep00-21swapper/019:07:150
105942252221,20sleep30-21swapper/319:09:393
227132620,0sleep10-21swapper/123:39:161
167522600,0sleep30-21swapper/321:19:433
94902590,0sleep30-21swapper/320:15:213
144812590,0sleep20-21swapper/222:35:192
278222580,0sleep30-21swapper/322:24:433
231952570,0sleep30-21swapper/323:39:383
253622540,0sleep00-21swapper/000:00:130
102592540,0sleep30-21swapper/322:52:413
298332530,0sleep10-21swapper/123:04:581
261332140,0sleep00-21swapper/022:23:240
20582140,0sleep10-21swapper/120:00:131
236702130,0sleep10-21swapper/122:21:281
109472120,0sleep10-21swapper/121:15:201
229492100,0sleep00-21swapper/000:37:300
1073799107,2cyclictest34-21ksoftirqd/320:00:023
24658290,0sleep30-21swapper/321:24:233
14947290,0sleep30-21swapper/321:37:413
107319997,2cyclictest22-21ksoftirqd/121:10:001
107269990,7cyclictest8850-21turbostat21:15:000
22348280,0sleep00-21swapper/022:40:180
15964280,0sleep10-21swapper/100:33:301
12598280,0sleep30-21swapper/323:52:163
107379987,1cyclictest34-21ksoftirqd/321:10:013
107349980,7cyclictest6964-21sshd22:30:522
12656270,0sleep30-21swapper/322:15:153
107379974,2cyclictest275-21systemd-journal00:28:183
107379974,2cyclictest17707-21ntpq23:55:173
107379974,2cyclictest16587-21sshd22:36:523
107379973,3cyclictest658-21snmpd00:03:073
107379973,1cyclictest0-21swapper/300:17:163
107379970,1cyclictest9882-21ssh00:30:013
107379970,1cyclictest0-21swapper/322:40:263
107349974,3cyclictest13746-21ssh21:17:232
107349974,2cyclictest504-21dbus-daemon23:45:172
107349973,3cyclictest275-21systemd-journal23:58:512
107349973,3cyclictest275-21systemd-journal19:59:562
107349973,3cyclictest18995-21perl21:40:122
107349973,3cyclictest0-21swapper/219:15:252
107349972,4cyclictest29834-21diskmemload23:04:582
107349972,3cyclictest275-21systemd-journal00:11:092
107349970,6cyclictest3426-21sshd21:10:502
107319975,1cyclictest23712-21idleruntime-cro20:50:001
107319974,2cyclictest275-21systemd-journal20:33:171
107319974,2cyclictest26838-11brltty20:56:371
107319973,3cyclictest504-21dbus-daemon23:30:001
107319973,3cyclictest28315-21cat21:45:201
107319973,3cyclictest275-21systemd-journal22:48:521
107319973,1cyclictest22-21ksoftirqd/121:40:171
107319970,3cyclictest275-21systemd-journal20:15:001
107319970,3cyclictest12942-21munin-node19:15:011
107379964,1cyclictest469-21diskmemload23:30:113
107379964,1cyclictest469-21diskmemload23:30:113
107379963,3cyclictest503-21rs:main3
107379963,2cyclictest8021-21wc23:10:173
107379963,2cyclictest7719-21ssh22:31:243
107379963,2cyclictest658-21snmpd21:27:353
107379963,2cyclictest658-21snmpd19:42:123
107379963,2cyclictest30554-21sshd22:05:593
107379963,2cyclictest275-21systemd-journal23:20:383
107379963,2cyclictest26826-21ssh23:41:013
107379963,2cyclictest26159-21/usr/sbin/munin00:20:133
107379963,2cyclictest19403-21ls21:40:143
107379963,2cyclictest19378-21cat20:40:003
107379963,2cyclictest19121-21if_err_enp4s000:35:133
107379963,2cyclictest12734-21cstates20:25:123
107379963,2cyclictest0-21swapper/322:25:533
107379963,1cyclictest0-21swapper/322:55:343
107379963,1cyclictest0-21swapper/321:55:333
107379962,3cyclictest658-21snmpd21:50:073
107379962,3cyclictest658-21snmpd19:35:033
107379962,3cyclictest4249-21/usr/sbin/munin20:05:153
107379962,3cyclictest32474-21sshd22:46:073
107379962,3cyclictest31488-21ntpq23:05:183
107379962,3cyclictest27036-21ls21:45:123
107379962,3cyclictest20664-21expr19:30:133
107379962,3cyclictest16394-21cat19:20:123
107379962,3cyclictest13372-21cat19:15:013
107379962,3cyclictest11600-21cat19:10:153
107379962,3cyclictest0-21swapper/323:00:503
107379962,3cyclictest0-21swapper/322:10:133
107379962,1cyclictest141rcu_preempt21:00:013
107379961,1cyclictest141rcu_preempt00:09:023
107379960,6cyclictest0-21swapper/321:12:163
107379960,5cyclictest31917-21expr23:25:153
107379960,2cyclictest19691-21/usr/sbin/munin22:00:183
107379960,1cyclictest141rcu_preempt23:45:133
107379960,0cyclictest0-21swapper/323:16:183
107349966,0cyclictest0-21swapper/223:33:242
107349966,0cyclictest0-21swapper/223:33:242
107349963,2cyclictest9710-21rm21:54:222
107349963,2cyclictest9017-21ntpq20:15:172
107349963,2cyclictest658-21snmpd22:40:232
107349963,2cyclictest658-21snmpd20:52:242
107349963,2cyclictest5813-21ssh23:29:042
107349963,2cyclictest3865-21ssh23:08:322
107349963,2cyclictest26510-21sshd19:40:332
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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