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2026-06-02 - 14:45
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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 Tue Jun 02, 2026 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
303852322292,19sleep20-21swapper/219:09:402
300592275243,22sleep00-21swapper/019:05:480
301522271241,19sleep10-21swapper/119:06:541
301662257230,18sleep30-21swapper/319:07:043
9762580,0sleep20-21swapper/223:10:452
285022570,0sleep10-21swapper/123:46:111
195112570,0sleep30-21swapper/323:40:493
29572560,0sleep10-21swapper/122:15:141
192842500,0sleep00-21swapper/023:02:500
142052200,0sleep10-21swapper/100:15:471
145362190,0sleep10-21swapper/123:19:361
9472180,0sleep00-21swapper/019:15:020
45652180,0sleep30-21swapper/320:35:013
293772170,0sleep10-21swapper/122:11:251
12542170,0sleep00-21swapper/022:33:190
283862140,0sleep30-21swapper/322:49:313
75862130,0sleep10-21swapper/121:40:131
270412130,0sleep30-21swapper/323:45:213
32043290,0sleep30-21swapper/321:16:133
305159993,3cyclictest15160-21idleruntime-cro21:45:012
6451280,0sleep00-21swapper/023:33:450
305209980,7cyclictest14184-21ssh23:57:043
305159980,5cyclictest23176-21dpkg20:05:002
305119986,1cyclictest19047-21ssh22:43:531
305119980,7cyclictest0-21swapper/121:35:121
305079985,2cyclictest17511-21systemd-udevd22:42:450
18559280,1sleep30-21swapper/321:05:163
31258270,0sleep10-21swapper/100:25:511
30935270,0sleep10-21swapper/123:10:031
305209974,2cyclictest954-21cut19:15:023
305209973,3cyclictest658-21snmpd20:28:163
305209973,3cyclictest275-21systemd-journal22:29:453
305209973,3cyclictest275-21systemd-journal20:00:003
305209973,2cyclictest275-21systemd-journal22:35:363
305159973,3cyclictest4453-21cron00:30:002
305159973,3cyclictest29156-21cut20:15:182
305159973,1cyclictest0-21swapper/223:05:502
305159972,3cyclictest504-21dbus-daemon23:40:002
305159970,7cyclictest21770-21ssh00:01:242
305159970,3cyclictest11033-21/usr/sbin/munin22:20:182
305119973,3cyclictest658-21snmpd22:07:351
305119973,3cyclictest658-21snmpd20:00:361
305119973,3cyclictest658-21snmpd19:32:151
305119972,1cyclictest15556-21idleruntime-cro21:00:011
305119970,1cyclictest20901-21ssh23:22:591
305079973,3cyclictest275-21systemd-journal23:47:570
305079973,3cyclictest275-21systemd-journal23:25:000
305079973,3cyclictest275-21systemd-journal21:00:250
305079973,3cyclictest17526-21diskstats23:40:120
305079973,2cyclictest275-21systemd-journal00:10:000
305079973,1cyclictest5378-21perf19:25:000
305079972,3cyclictest275-21systemd-journal00:09:420
305209966,0cyclictest0-21swapper/322:00:173
305209966,0cyclictest0-21swapper/300:20:103
305209964,1cyclictest29586-21unixbench_multi22:30:213
305209963,2cyclictest658-21snmpd21:45:073
305209963,2cyclictest658-21snmpd20:53:053
305209963,2cyclictest658-21snmpd20:53:053
305209963,2cyclictest3518-21sh23:50:253
305209963,2cyclictest31588-21ssh22:13:043
305209963,2cyclictest30647-21open_files22:50:183
305209963,2cyclictest2984-21df22:15:143
305209963,2cyclictest18160-21cat22:05:153
305209963,2cyclictest11158-21sh22:58:093
305209962,3cyclictest8160-21ntpq21:40:163
305209962,3cyclictest658-21snmpd23:35:463
305209962,3cyclictest658-21snmpd23:30:043
305209962,3cyclictest658-21snmpd23:16:103
305209962,3cyclictest658-21snmpd22:21:353
305209962,3cyclictest658-21snmpd21:51:503
305209962,3cyclictest658-21snmpd21:11:063
305209962,3cyclictest658-21snmpd20:55:083
305209962,3cyclictest658-21snmpd20:45:113
305209962,3cyclictest658-21snmpd20:44:113
305209962,3cyclictest658-21snmpd19:35:303
305209962,3cyclictest658-21snmpd19:27:183
305209962,3cyclictest5360-21cat20:35:153
305209962,3cyclictest31088-21cat20:20:153
305209962,3cyclictest29557-21cat20:15:203
305209962,3cyclictest29168-21expr00:25:133
305209962,3cyclictest275-21systemd-journal19:12:383
305209962,3cyclictest26305-21expr20:10:123
305209962,3cyclictest24863-21cat23:25:163
305209962,3cyclictest24392-21cat20:05:143
305209962,3cyclictest19332-21cat00:00:143
305209962,3cyclictest1-21systemd21:55:553
305209962,3cyclictest12065-21tr00:15:133
305209962,3cyclictest0-21swapper/322:40:123
305209962,1cyclictest0-21swapper/323:01:363
305209962,1cyclictest0-21swapper/300:12:473
305209962,1cyclictest0-21swapper/300:05:113
305209961,2cyclictest22320-21rm21:30:103
305209960,6cyclictest0-21swapper/321:26:063
305209960,6cyclictest0-21swapper/319:41:283
305209960,5cyclictest31631-21fschecks_count23:10:153
305209960,4cyclictest20022-21diskmemload00:30:473
305209960,3cyclictest15756-21grep23:20:113
305209960,0cyclictest0-21swapper/323:05:073
305209960,0cyclictest0-21swapper/321:37:323
305159966,0cyclictest16229-21ssh00:36:102
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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