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2026-06-08 - 22:54
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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 Jun 08, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
185572301271,19sleep20-21swapper/207:08:222
186602297268,19sleep10-21swapper/107:09:421
186012268233,22sleep00-21swapper/007:08:560
184582266235,21sleep30-21swapper/307:07:063
273652680,0sleep00-21swapper/010:19:520
181252610,0sleep10-21swapper/110:14:081
302262580,0sleep00-21swapper/010:20:400
274412540,0sleep00-21swapper/012:15:430
128842530,0sleep30-21swapper/310:30:163
66562170,0sleep10-21swapper/109:27:501
94572160,0sleep10-21swapper/110:08:521
78282150,0sleep10-21swapper/109:48:081
32622140,0sleep20-21swapper/209:25:192
187979997,1cyclictest12-21ksoftirqd/007:40:010
27881280,0sleep30-21swapper/312:16:033
2591280,0chrt0-21swapper/010:43:530
188089984,3cyclictest275-21systemd-journal08:47:043
188069982,3cyclictest19291-21munin-run10:15:002
188069980,7cyclictest1645-21ssh11:21:322
188019986,2cyclictest658-21snmpd09:20:541
30325270,0sleep00-21swapper/009:22:410
188089976,1cyclictest0-21swapper/309:33:553
188089974,2cyclictest275-21systemd-journal12:04:593
188089973,3cyclictest658-21snmpd12:22:033
188089973,3cyclictest275-21systemd-journal11:21:133
188089973,3cyclictest0-21swapper/310:37:133
188089973,2cyclictest275-21systemd-journal12:25:273
188089973,2cyclictest275-21systemd-journal11:28:153
188089972,3cyclictest275-21systemd-journal10:04:393
188069974,2cyclictest19421-21sshd12:11:062
188069970,4cyclictest10312-21idleruntime-cro09:50:022
188019973,3cyclictest658-21snmpd12:37:441
188019973,3cyclictest658-21snmpd07:50:261
188019971,3cyclictest27432-21systemctl08:40:011
188019971,2cyclictest24536-21apt-get12:15:011
187979973,3cyclictest9302-21awk09:10:140
187979973,3cyclictest658-21snmpd11:56:560
187979973,3cyclictest658-21snmpd10:56:430
187979973,3cyclictest658-21snmpd10:02:590
187979973,3cyclictest504-21dbus-daemon10:26:230
187979973,3cyclictest17614-21apt-get12:30:110
187979971,4cyclictest12-21ksoftirqd/009:39:550
188089964,1cyclictest26460-21expr09:20:153
188089963,2cyclictest7741-21ssh10:46:293
188089963,2cyclictest696-21grep11:40:203
188089963,2cyclictest6763-21sh10:26:113
188089963,2cyclictest658-21snmpd11:59:583
188089963,2cyclictest639-21sh10:22:513
188089963,2cyclictest4819-21ssh09:45:503
188089963,2cyclictest304-21systemd-udevd07:35:353
188089963,2cyclictest28526-21sh10:59:263
188089963,2cyclictest275-21systemd-journal11:18:123
188089963,2cyclictest25385-21sh07:20:183
188089963,2cyclictest21823-21sh09:56:083
188089963,2cyclictest19702-21ssh11:13:273
188089963,2cyclictest17345-21cpuspeed_turbos09:15:113
188089963,2cyclictest12839-21cpu10:50:133
188089963,2cyclictest10064-21grep09:10:173
188089963,1cyclictest0-21swapper/311:50:463
188089962,3cyclictest9531-21ntpq12:05:183
188089962,3cyclictest7500-21apt11:45:133
188089962,3cyclictest7077-21cat09:05:153
188089962,3cyclictest658-21snmpd09:01:293
188089962,3cyclictest658-21snmpd08:33:153
188089962,3cyclictest658-21snmpd08:15:133
188089962,3cyclictest658-21snmpd07:41:423
188089962,3cyclictest658-21snmpd07:17:503
188089962,3cyclictest658-21snmpd07:10:563
188089962,3cyclictest304-21systemd-udevd07:33:353
188089962,3cyclictest275-21systemd-journal10:41:043
188089962,3cyclictest275-21systemd-journal08:29:583
188089962,3cyclictest275-21systemd-journal08:15:013
188089962,3cyclictest19471-21cat08:20:153
188089962,3cyclictest18511-21expr09:35:143
188089962,3cyclictest11312-21grep09:50:143
188089962,1cyclictest0-21swapper/311:06:163
188089962,1cyclictest0-21swapper/310:15:133
188089962,1cyclictest0-21swapper/309:25:573
188089961,2cyclictest28796-21sshd12:36:153
188089960,6cyclictest0-21swapper/311:37:143
188089960,3cyclictest19422-21sshd12:11:053
188069966,0cyclictest0-21swapper/211:07:552
188069966,0cyclictest0-21swapper/210:50:142
188069966,0cyclictest0-21swapper/210:40:522
188069966,0cyclictest0-21swapper/209:24:432
188069963,2cyclictest9786-21diskstats12:25:142
188069963,2cyclictest7565-21ssh10:26:502
188069963,2cyclictest658-21snmpd12:08:412
188069963,2cyclictest3837-21ssh11:03:582
188069963,2cyclictest30363-21rm10:01:192
188069963,2cyclictest275-21systemd-journal09:40:462
188069963,2cyclictest27232-21chrt08:37:452
188069963,2cyclictest25990-21sh10:57:282
188069963,2cyclictest21405-21sh11:33:582
188069963,2cyclictest17776-21ssh11:12:002
188069963,2cyclictest16608-21ssh09:53:292
188069963,2cyclictest12135-21sh11:47:352
188069963,2cyclictest12123-21/usr/sbin/munin10:30:162
188069963,1cyclictest0-21swapper/209:17:092
188069962,3cyclictest658-21snmpd12:19:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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