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2026-05-05 - 02:17
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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 Mon May 04, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
237882292263,19sleep20-21swapper/207:07:292
237492274244,19sleep10-21swapper/107:06:591
237332265233,21sleep00-21swapper/007:06:450
220202264229,22sleep30-21swapper/307:05:093
103142640,0sleep20-21swapper/209:25:532
29832610,0sleep20-21swapper/210:20:122
208112590,0sleep20-21swapper/209:51:422
208112590,0sleep20-21swapper/209:51:422
112102590,0sleep00-21swapper/012:20:150
58682580,0sleep30-21swapper/311:58:163
283792560,0sleep00-21swapper/011:13:520
245702540,0sleep20-21swapper/212:28:262
3672210,0sleep10-21swapper/109:40:071
115442190,0sleep20-21swapper/209:46:012
3452180,0sleep00-21swapper/009:40:060
297902180,1sleep00-21swapper/010:35:200
18202160,1sleep20-21swapper/210:57:452
245472150,0sleep10-21swapper/112:28:251
75662140,0sleep30-21swapper/310:22:293
52282140,0sleep00-21swapper/011:19:330
293222140,0sleep30-21swapper/310:15:443
23962130,0sleep20-21swapper/211:17:222
146662130,0sleep30-21swapper/310:45:393
241199984,3cyclictest275-21systemd-journal11:20:563
241179983,4cyclictest658-21snmpd09:10:022
241179983,3cyclictest275-21systemd-journal07:30:142
241139984,3cyclictest275-21systemd-journal11:28:331
241139980,5cyclictest19290-21dump-pmu-power10:30:011
241139980,5cyclictest16829-21idleruntime-cro09:50:021
18504280,0sleep00-21swapper/010:10:060
16263280,0sleep30-21swapper/311:06:033
3464270,0sleep10-21swapper/111:56:251
32007270,0sleep10-21swapper/109:58:371
241199976,1cyclictest34-21ksoftirqd/310:05:023
241199976,1cyclictest34-21ksoftirqd/309:00:003
241199975,2cyclictest34-21ksoftirqd/312:05:013
241199974,2cyclictest275-21systemd-journal08:01:303
241199973,3cyclictest658-21snmpd12:25:393
241199973,3cyclictest25622-21systemctl11:50:203
241199973,3cyclictest24440-21systemctl08:20:013
241179971,4cyclictest26662-21apt-get08:25:012
241139976,1cyclictest6759-21ssh09:24:341
241139973,3cyclictest663-21runrttasks10:55:331
241139973,3cyclictest658-21snmpd09:16:041
241099973,3cyclictest658-21snmpd11:34:200
241099973,3cyclictest658-21snmpd10:59:430
241099973,3cyclictest275-21systemd-journal10:44:160
241099972,3cyclictest19291-21dump-pmu-power10:30:010
241099972,1cyclictest0-21swapper/010:15:130
241099970,6cyclictest3650-21grep10:00:200
241099970,4cyclictest31375-21turbostat07:25:010
22957270,0sleep00-21swapper/009:53:190
22957270,0sleep00-21swapper/009:53:190
3679260,5sleep30-21swapper/307:35:013
27788260,0sleep00-21swapper/009:55:230
241199966,0cyclictest0-21swapper/311:30:523
241199966,0cyclictest0-21swapper/310:08:083
241199966,0cyclictest0-21swapper/309:41:453
241199966,0cyclictest0-21swapper/308:10:143
241199963,2cyclictest504-21dbus-daemon08:45:213
241199963,2cyclictest491-21systemd-logind11:25:173
241199963,2cyclictest3849-21ssh11:37:373
241199963,2cyclictest30332-21ssh09:57:213
241199963,2cyclictest29171-21cron08:30:013
241199963,2cyclictest27446-21ssh11:13:103
241199963,2cyclictest26449-21ssh09:35:263
241199963,2cyclictest25210-21grep08:20:153
241199963,2cyclictest22853-21ssh09:53:153
241199963,2cyclictest22853-21ssh09:53:143
241199963,2cyclictest22023-21ssh10:11:343
241199963,2cyclictest18634-21ssh09:30:513
241199963,2cyclictest16277-21/usr/sbin/munin09:10:203
241199963,2cyclictest15446-21sshd07:59:223
241199962,3cyclictest8936-21expr11:40:173
241199962,3cyclictest658-21snmpd12:36:203
241199962,3cyclictest658-21snmpd12:22:093
241199962,3cyclictest658-21snmpd12:14:123
241199962,3cyclictest658-21snmpd10:57:563
241199962,3cyclictest658-21snmpd10:51:413
241199962,3cyclictest658-21snmpd10:27:463
241199962,3cyclictest658-21snmpd09:07:443
241199962,3cyclictest658-21snmpd09:03:073
241199962,3cyclictest658-21snmpd08:51:403
241199962,3cyclictest658-21snmpd08:36:133
241199962,3cyclictest658-21snmpd07:35:063
241199962,3cyclictest658-21snmpd07:25:173
241199962,3cyclictest3222-21sh11:18:003
241199962,3cyclictest275-21systemd-journal08:44:063
241199962,3cyclictest275-21systemd-journal08:10:013
241199962,1cyclictest0-21swapper/311:00:163
241199962,1cyclictest0-21swapper/310:43:343
241199962,1cyclictest0-21swapper/309:28:573
241199961,4cyclictest9418-21cut09:45:143
241199961,4cyclictest0-21swapper/310:30:113
241199961,1cyclictest27763-21hddtemp_smartct12:30:143
241199961,1cyclictest0-21swapper/310:35:123
241199960,6cyclictest0-21swapper/309:20:073
241199960,0cyclictest0-21swapper/312:15:373
241179966,0cyclictest0-21swapper/211:55:562
241179964,1cyclictest10940-21perf12:40:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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