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2026-04-03 - 11:29
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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 Apr 03, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
60282310284,17sleep20-21swapper/219:06:462
61302303272,21sleep10-21swapper/119:07:501
62412268239,19sleep30-21swapper/319:09:173
62382261230,21sleep00-21swapper/019:09:140
321822570,0sleep30-21swapper/300:08:393
137332570,0sleep00-21swapper/021:40:120
113132570,0sleep10-21swapper/100:35:121
76382550,0sleep00-21swapper/019:10:170
53412550,0sleep10-21swapper/122:53:491
7732200,0sleep00-21swapper/023:30:120
60572180,0sleep10-21swapper/122:15:011
265512180,1sleep30-21swapper/319:50:193
190892180,0sleep20-21swapper/223:40:352
148922170,0sleep3331rcuc/300:36:533
33532160,0sleep30-21swapper/300:10:193
260052140,0sleep10-21swapper/123:05:431
206762140,1sleep00-21swapper/022:43:150
40502130,0sleep10-21swapper/121:14:461
641499103,4cyclictest18118-21idleruntime-cro19:35:012
64179997,2cyclictest34-21ksoftirqd/320:05:013
64179983,3cyclictest275-21systemd-journal00:04:003
64179980,0cyclictest141rcu_preempt21:30:003
64149980,5cyclictest17186-21basename20:45:002
64059987,1cyclictest12-21ksoftirqd/000:00:000
64059982,3cyclictest29236-21munin-run20:00:010
27267280,0sleep00-21swapper/023:06:420
64179975,1cyclictest3502-21ls20:15:013
64179974,2cyclictest31755-21ntpq22:10:183
64179974,2cyclictest275-21systemd-journal19:44:123
64179971,5cyclictest6755-21ssh22:35:033
64179970,7cyclictest0-21swapper/323:34:553
64179970,7cyclictest0-21swapper/321:56:043
64149973,3cyclictest19823-21smart_sda00:20:172
64149970,2cyclictest275-21systemd-journal23:35:022
64099973,3cyclictest560-21gdbus20:50:001
64099972,3cyclictest275-21systemd-journal19:27:221
64099971,5cyclictest9734-21munin-run00:15:001
64059975,2cyclictest12-21ksoftirqd/022:00:010
64059973,3cyclictest658-21snmpd22:01:470
64059973,3cyclictest658-21snmpd00:16:120
64059973,3cyclictest658-21snmpd00:10:270
64059973,1cyclictest13892-21gltestperf21:20:140
32455270,0sleep20-21swapper/221:50:482
22122270,0sleep20-21swapper/222:05:012
16610270,0sleep20-21swapper/223:20:132
10094270,2sleep122-21ksoftirqd/119:15:151
64179966,0cyclictest0-21swapper/323:06:473
64179965,1cyclictest34-21ksoftirqd/319:15:013
64179965,1cyclictest14195-21apt-get22:00:123
64179964,1cyclictest7187-21gltestperf19:10:143
64179964,1cyclictest34-21ksoftirqd/323:45:013
64179963,2cyclictest6737-21sh23:14:343
64179963,2cyclictest504-21dbus-daemon23:00:183
64179963,2cyclictest504-21dbus-daemon20:54:593
64179963,2cyclictest491-21systemd-logind20:42:183
64179963,2cyclictest31928-21diskstats22:50:103
64179963,2cyclictest29700-21sh22:48:563
64179963,2cyclictest20033-21sh23:21:543
64179963,2cyclictest18185-21ssh21:42:273
64179963,2cyclictest11147-21sh23:35:473
64179963,2cyclictest0-21swapper/321:51:263
64179962,3cyclictest658-21snmpd23:43:383
64179962,3cyclictest658-21snmpd22:27:543
64179962,3cyclictest658-21snmpd21:20:123
64179962,3cyclictest658-21snmpd20:33:083
64179962,3cyclictest658-21snmpd20:25:473
64179962,3cyclictest658-21snmpd19:59:083
64179962,3cyclictest658-21snmpd19:20:403
64179962,3cyclictest658-21snmpd00:28:063
64179962,3cyclictest658-21snmpd00:16:063
64179962,3cyclictest275-21systemd-journal21:45:173
64179962,3cyclictest275-21systemd-journal20:47:383
64179962,3cyclictest25271-21cat21:00:143
64179962,3cyclictest1874-21head23:50:133
64179962,3cyclictest15946-21which22:20:203
64179962,3cyclictest15666-21sshd19:27:233
64179962,1cyclictest0-21swapper/322:30:523
64179962,1cyclictest0-21swapper/300:31:553
64179960,6cyclictest0-21swapper/323:55:453
64179960,6cyclictest0-21swapper/321:36:473
64179960,6cyclictest0-21swapper/300:20:463
64179960,5cyclictest29679-21gltestperf21:10:153
64179960,2cyclictest30272-21grep21:30:143
64179960,0cyclictest10076-21ssh22:56:053
64149963,2cyclictest8951-21head23:15:172
64149963,2cyclictest658-21snmpd22:35:452
64149963,2cyclictest658-21snmpd22:30:092
64149963,2cyclictest658-21snmpd21:41:522
64149963,2cyclictest658-21snmpd21:31:102
64149963,2cyclictest658-21snmpd19:29:192
64149963,2cyclictest658-21snmpd00:11:002
64149963,2cyclictest504-21dbus-daemon23:59:002
64149963,2cyclictest31402-21ssh23:29:222
64149963,2cyclictest28986-11brltty22:40:282
64149963,2cyclictest275-21systemd-journal20:14:182
64149963,2cyclictest25835-21sh22:26:202
64149963,2cyclictest25097-21ssh23:05:182
64149963,2cyclictest16183-21sh21:21:162
64149963,2cyclictest14388-21chrt22:20:022
64149963,2cyclictest13474-21sshd19:22:402
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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