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2026-08-04 - 08:05
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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 Aug 04, 2026 00:44:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
268402316290,17sleep20-21swapper/219:05:552
268682292263,18sleep10-21swapper/119:06:141
269042273242,20sleep00-21swapper/019:06:360
252072257226,20sleep30-21swapper/319:05:073
242402620,0sleep00-21swapper/021:53:430
312392600,0sleep20-21swapper/222:36:292
88002590,0sleep30-21swapper/322:04:063
319802590,0sleep10-21swapper/121:58:201
12552580,0sleep30-21swapper/322:19:003
306872570,0sleep00-21swapper/021:57:190
199442570,0sleep00-21swapper/021:11:050
208552560,0sleep00-21swapper/021:31:260
192042560,0sleep30-21swapper/323:47:533
242992550,0sleep30-21swapper/321:14:283
142232550,0sleep20-21swapper/222:45:372
81592180,0sleep30-21swapper/320:50:143
319012170,0sleep20-21swapper/221:38:382
319012170,0sleep20-21swapper/221:38:382
266762170,0sleep20-21swapper/200:11:352
27288991311,1cyclictest12-21ksoftirqd/021:20:000
45962120,0sleep10-21swapper/122:20:181
291912120,0sleep20-21swapper/223:15:012
272999997,1cyclictest34-21ksoftirqd/323:00:003
272999986,2cyclictest1287-21timerandwakeup00:35:193
272999985,2cyclictest658-21snmpd00:31:013
272999984,3cyclictest504-21dbus-daemon22:35:013
272919985,2cyclictest2926-21ssh22:59:001
272919980,7cyclictest16778-21diskmemload00:01:471
31260270,0sleep30-21swapper/321:18:293
272999975,1cyclictest34-21ksoftirqd/320:09:593
272999974,2cyclictest658-21snmpd21:40:493
272999974,2cyclictest275-21systemd-journal20:56:003
272999974,2cyclictest1-21systemd21:49:583
272999973,3cyclictest275-21systemd-journal23:14:163
272999973,3cyclictest275-21systemd-journal20:21:553
272999973,3cyclictest275-21systemd-journal00:17:193
272999973,3cyclictest275-21systemd-journal00:01:263
272999973,1cyclictest0-21swapper/322:44:153
272999973,1cyclictest0-21swapper/322:23:433
272999973,1cyclictest0-21swapper/321:50:143
272999972,4cyclictest504-21dbus-daemon19:23:423
272999970,3cyclictest29827-21sed19:15:013
272969973,3cyclictest658-21snmpd23:40:262
272969970,7cyclictest0-21swapper/223:06:062
272969970,1cyclictest0-21swapper/222:31:562
272919976,1cyclictest0-21swapper/100:14:031
272919974,2cyclictest658-21snmpd21:44:171
272919974,2cyclictest275-21systemd-journal20:16:241
272919973,3cyclictest275-21systemd-journal23:26:251
272919970,1cyclictest16778-21diskmemload21:48:021
272919970,1cyclictest14098-21ssh21:27:341
272919970,1cyclictest0-21swapper/121:50:401
272889976,1cyclictest16778-21diskmemload21:39:120
272889976,1cyclictest16778-21diskmemload21:39:120
272889974,2cyclictest17688-21cron20:00:010
272889973,3cyclictest658-21snmpd23:37:180
272889973,3cyclictest275-21systemd-journal23:00:050
272889973,3cyclictest275-21systemd-journal22:40:010
272889973,3cyclictest275-21systemd-journal22:04:090
272889973,3cyclictest18355-21df20:00:140
272889973,1cyclictest0-21swapper/023:50:130
16090270,0sleep10-21swapper/122:47:051
272999964,1cyclictest34-21ksoftirqd/322:55:003
272999963,3cyclictest0-21swapper/320:46:543
272999963,2cyclictest5489-21ssh21:22:143
272999963,2cyclictest504-21dbus-daemon00:10:023
272999963,2cyclictest3746-21rm23:38:413
272999963,2cyclictest29345-21ssh23:15:063
272999963,2cyclictest275-21systemd-journal21:26:373
272999963,2cyclictest22361-21fschecks_time23:30:153
272999963,2cyclictest22361-21fschecks_time23:30:153
272999963,2cyclictest18070-21ssh00:06:323
272999963,2cyclictest13539-21rm23:25:093
272999963,2cyclictest13213-21ntpq21:00:153
272999963,2cyclictest12329-21ssh22:05:263
272999963,1cyclictest0-21swapper/321:35:093
272999963,1cyclictest0-21swapper/321:35:093
272999962,3cyclictest7190-21run-parts23:40:173
272999962,3cyclictest658-21snmpd22:26:043
272999962,3cyclictest658-21snmpd21:06:443
272999962,3cyclictest658-21snmpd20:35:123
272999962,3cyclictest658-21snmpd20:19:133
272999962,3cyclictest5294-21cat19:30:153
272999962,3cyclictest31440-21cat23:55:153
272999962,3cyclictest3140-21cat19:25:163
272999962,3cyclictest29081-21ntpq22:35:173
272999962,3cyclictest28177-21cat19:10:163
272999962,3cyclictest275-21systemd-journal20:31:273
272999962,3cyclictest27155-21cat21:55:163
272999962,3cyclictest15952-21seq19:55:133
272999961,3cyclictest275-21systemd-journal20:40:153
272999961,2cyclictest19162-21ssh00:26:403
272999960,6cyclictest0-21swapper/322:13:513
272999960,2cyclictest142242sh22:45:383
272999960,0cyclictest0-21swapper/323:50:113
272999960,0cyclictest0-21swapper/321:34:243
272969963,2cyclictest848-21cat19:20:172
272969963,2cyclictest7722-21sh21:43:382
272969963,2cyclictest663-21runrttasks19:11:382
272969963,2cyclictest658-21snmpd22:20:362
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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