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2026-05-19 - 04:58
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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 May 19, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
59532321290,21sleep10-21swapper/119:05:381
61682275245,20sleep20-21swapper/219:08:082
60022275248,18sleep30-21swapper/319:06:123
62392272243,19sleep00-21swapper/019:09:030
139342640,0sleep20-21swapper/221:20:132
37442600,0sleep20-21swapper/221:33:542
168332570,0sleep10-21swapper/100:36:531
182452540,0sleep30-21swapper/323:59:233
259622210,0sleep20-21swapper/222:45:192
63642190,0sleep00-21swapper/022:14:500
275972190,0sleep00-21swapper/000:05:010
166042190,0sleep00-21swapper/000:17:100
77732170,0sleep30-21swapper/322:35:073
254572170,0sleep30-21swapper/319:50:133
42042140,0sleep00-21swapper/000:10:130
318062140,0sleep10-21swapper/121:11:031
64042130,0sleep30-21swapper/300:30:173
30702130,0sleep00-21swapper/022:50:570
236562130,0sleep30-21swapper/322:44:483
236942110,0sleep20-21swapper/223:42:332
643099108,1cyclictest34-21ksoftirqd/319:15:013
64309980,7cyclictest11641-21ssh00:14:563
64259984,3cyclictest275-21systemd-journal00:07:302
64229986,2cyclictest22-21ksoftirqd/119:55:001
24724280,0sleep00-21swapper/023:43:190
15427280,0sleep10-21swapper/121:20:361
64309973,3cyclictest658-21snmpd21:52:153
64309973,3cyclictest658-21snmpd00:35:343
64309973,3cyclictest504-21dbus-daemon23:20:013
64309973,3cyclictest24919-21cron23:05:013
64309973,1cyclictest0-21swapper/323:45:133
64309973,1cyclictest0-21swapper/323:36:203
64309973,1cyclictest0-21swapper/300:08:493
64259976,1cyclictest28-21ksoftirqd/221:50:012
64259976,1cyclictest26320-21ssh00:23:162
64259974,2cyclictest658-21snmpd22:51:462
64259973,3cyclictest504-21dbus-daemon22:40:012
64259973,3cyclictest504-21dbus-daemon21:25:322
64259973,3cyclictest275-21systemd-journal23:20:012
64259971,3cyclictest23966-21munin-run22:45:012
64229976,1cyclictest15961-21rm23:57:361
64229973,3cyclictest658-21snmpd00:29:461
64199974,2cyclictest275-21systemd-journal20:15:500
64199973,3cyclictest658-21snmpd22:37:000
64199973,3cyclictest658-21snmpd21:29:180
64199973,3cyclictest658-21snmpd19:20:100
64199973,3cyclictest275-21systemd-journal20:04:090
64199973,3cyclictest275-21systemd-journal19:56:520
64199970,5cyclictest28550-21turbostat00:25:000
25413270,6sleep325426-21ssh22:05:533
64309966,0cyclictest0-21swapper/300:26:143
64309964,1cyclictest22632-21diskstats20:55:133
64309964,1cyclictest21789-21cron21:45:023
64309964,1cyclictest18815-21df_inode19:35:203
64309963,2cyclictest6856-21sh23:51:533
64309963,2cyclictest560-21gdbus19:20:013
64309963,2cyclictest504-21dbus-daemon23:10:193
64309963,2cyclictest4326-21gltestperf20:15:133
64309963,2cyclictest31908-21hddtemp_smartct22:10:153
64309963,2cyclictest31477-21chrt20:04:233
64309963,2cyclictest25979-21ssh21:27:243
64309963,2cyclictest20669-21ssh00:20:073
64309963,2cyclictest18762-21tail23:20:153
64309963,2cyclictest18762-21tail23:20:143
64309963,2cyclictest16968-21ssh22:00:453
64309962,3cyclictest9111-21expr22:55:143
64309962,3cyclictest658-21snmpd23:09:053
64309962,3cyclictest658-21snmpd21:59:213
64309962,3cyclictest658-21snmpd21:48:453
64309962,3cyclictest658-21snmpd20:47:183
64309962,3cyclictest658-21snmpd20:20:243
64309962,3cyclictest658-21snmpd20:10:013
64309962,3cyclictest658-21snmpd19:55:143
64309962,3cyclictest658-21snmpd19:45:053
64309962,3cyclictest658-21snmpd19:40:413
64309962,3cyclictest658-21snmpd00:17:453
64309962,3cyclictest27481-21ntpq23:25:163
64309962,3cyclictest20637-21cat23:40:193
64309962,1cyclictest0-21swapper/322:32:463
64309962,1cyclictest0-21swapper/321:25:013
64309962,1cyclictest0-21swapper/321:15:403
64309961,3cyclictest275-21systemd-journal20:40:023
64309961,2cyclictest13032-21acpi20:35:133
64309961,1cyclictest13968-21apt-get19:25:113
64309960,5cyclictest465-21/usr/sbin/munin22:50:183
64309960,2cyclictest29776-21/usr/sbin/munin21:30:153
64309960,0cyclictest19331-21ssh00:00:013
64309960,0cyclictest0-21swapper/322:45:123
64259966,0cyclictest0-21swapper/222:27:132
64259966,0cyclictest0-21swapper/221:52:492
64259963,2cyclictest8290-21sh00:31:392
64259963,2cyclictest6667-21cstates21:55:132
64259963,2cyclictest658-21snmpd22:30:432
64259963,2cyclictest560-21gdbus00:30:002
64259963,2cyclictest504-21dbus-daemon20:09:592
64259963,2cyclictest222182sleep220:55:112
64259963,2cyclictest20682-21cat20:50:142
64259963,2cyclictest19439-21ssh00:38:542
64259963,2cyclictest18217-21sh21:42:162
64259962,3cyclictest7305-21cat19:10:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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