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2026-06-05 - 09:52
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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 Fri Jun 05, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81542317287,19sleep10-21swapper/119:07:581
80042300270,19sleep20-21swapper/219:06:172
81582271245,16sleep00-21swapper/019:08:010
79902265235,20sleep30-21swapper/319:06:063
293752560,0sleep10-21swapper/100:23:331
154692560,0sleep30-21swapper/323:16:303
79932550,0sleep10-21swapper/123:50:471
3932550,0sleep00-21swapper/023:07:420
215242380,0sleep10-21swapper/122:02:161
126562190,0sleep10-21swapper/100:13:371
126562190,0sleep10-21swapper/100:13:371
166382150,0sleep20-21swapper/222:57:592
125452150,0sleep20-21swapper/221:17:582
231462130,0sleep00-21swapper/022:22:370
146622130,0sleep30-21swapper/322:56:273
841099119,1cyclictest12-21ksoftirqd/023:20:000
841599105,4cyclictest658-21snmpd23:57:561
84109998,1cyclictest12-21ksoftirqd/000:00:010
24600290,0sleep20-21swapper/223:41:272
84159986,1cyclictest12697-21ssh22:15:531
84109985,2cyclictest658-21snmpd22:51:330
5387280,0sleep20-21swapper/223:10:202
84239973,3cyclictest658-21snmpd23:55:323
84239973,3cyclictest275-21systemd-journal22:22:243
84239973,3cyclictest275-21systemd-journal21:12:103
84239973,1cyclictest0-21swapper/322:33:163
84239972,3cyclictest275-21systemd-journal21:55:013
84239972,3cyclictest275-21systemd-journal21:18:003
84199975,1cyclictest28-21ksoftirqd/221:00:002
84199973,3cyclictest275-21systemd-journal20:15:012
84199973,3cyclictest275-21systemd-journal00:24:562
84199971,3cyclictest26763-21dump-pmu-power22:45:002
84199970,1cyclictest28986-21ssh21:27:472
84159976,1cyclictest30978-21ssh21:29:191
84159975,2cyclictest14152-21kworker/1:022:58:321
84159973,3cyclictest658-21snmpd21:42:551
84159973,3cyclictest275-21systemd-journal23:06:341
84159973,3cyclictest275-21systemd-journal22:25:011
84159970,1cyclictest0-21swapper/122:47:371
84109973,3cyclictest658-21snmpd19:59:450
84109973,3cyclictest504-21dbus-daemon19:20:000
84109973,3cyclictest275-21systemd-journal00:17:300
84109973,3cyclictest275-21systemd-journal00:03:300
84109973,3cyclictest22199-21smart_sda19:35:180
84109970,3cyclictest26709-21/usr/sbin/munin21:00:130
84239964,1cyclictest1978-21cron20:05:013
84239963,2cyclictest7977-21ssh21:35:083
84239963,2cyclictest6712-21ssh23:30:313
84239963,2cyclictest658-21snmpd23:49:193
84239963,2cyclictest658-21snmpd23:39:383
84239963,2cyclictest658-21snmpd20:25:223
84239963,2cyclictest5522-21sh23:10:203
84239963,2cyclictest5169-21cut20:10:143
84239963,2cyclictest29200-21grep19:50:193
84239963,2cyclictest275-21systemd-journal20:38:183
84239963,2cyclictest275-21systemd-journal20:20:183
84239963,2cyclictest23590-21ssh00:39:293
84239963,2cyclictest22436-21ssh23:01:013
84239963,2cyclictest22127-21ssh22:41:253
84239963,2cyclictest18057-21if_enp4s022:00:173
84239963,2cyclictest17569-21rm00:16:013
84239963,2cyclictest16808-21fschecks_count21:40:143
84239963,1cyclictest0-21swapper/323:21:093
84239962,3cyclictest658-21snmpd22:45:423
84239962,3cyclictest658-21snmpd22:15:223
84239962,3cyclictest658-21snmpd21:21:003
84239962,3cyclictest658-21snmpd20:16:343
84239962,3cyclictest658-21snmpd20:08:133
84239962,3cyclictest658-21snmpd19:47:003
84239962,3cyclictest658-21snmpd19:20:353
84239962,3cyclictest275-21systemd-journal00:25:013
84239962,3cyclictest10857-21ssh21:55:273
84239962,2cyclictest22136-40systemctl00:00:013
84239962,1cyclictest0-21swapper/322:39:203
84239962,1cyclictest0-21swapper/322:10:153
84239962,1cyclictest0-21swapper/321:48:233
84239962,1cyclictest0-21swapper/321:32:343
84239962,1cyclictest0-21swapper/300:05:113
84239961,2cyclictest3637-21idleruntime22:50:163
84239960,5cyclictest7989-21/usr/sbin/munin00:30:183
84239960,5cyclictest21957-21ntp_states19:35:173
84239960,5cyclictest16830-21grep19:25:143
84239960,2cyclictest28581-21fschecks_time23:05:143
84199966,0cyclictest0-21swapper/223:05:362
84199966,0cyclictest0-21swapper/222:21:412
84199966,0cyclictest0-21swapper/221:45:442
84199963,2cyclictest8440-21taskset00:10:252
84199963,2cyclictest8440-21taskset00:10:252
84199963,2cyclictest8112-21ssh22:53:002
84199963,2cyclictest7707-21sh23:31:162
84199963,2cyclictest29483-21sh22:06:472
84199963,2cyclictest275-21systemd-journal20:36:142
84199963,2cyclictest2741-21sh23:28:502
84199963,2cyclictest20040-21cstates23:00:132
84199963,2cyclictest18924-21fschecks_time19:30:132
84199963,2cyclictest18038-21ssh21:20:492
84199963,2cyclictest15063-21sh23:16:112
84199963,2cyclictest13971-21ssh23:55:112
84199963,2cyclictest12280-21memory19:15:152
84199963,2cyclictest11490-21ssh23:53:272
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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