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2025-12-13 - 11:53
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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 Sat Dec 13, 2025 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
294132310284,17sleep20-21swapper/219:06:172
294902300269,20sleep10-21swapper/119:07:171
295172254222,22sleep30-21swapper/319:07:393
294842245215,20sleep00-21swapper/019:07:120
15892820,0sleep20-21swapper/219:15:202
214442610,0sleep30-21swapper/320:00:163
82772540,0sleep10-21swapper/123:10:091
105152190,0sleep20-21swapper/219:35:172
326552160,0sleep10-21swapper/120:25:181
29816991210,2cyclictest34-21ksoftirqd/320:40:013
161922110,0sleep10-21swapper/122:15:081
30654290,0sleep10-21swapper/122:45:161
298089990,2cyclictest27672-21/usr/sbin/munin20:15:141
298069983,3cyclictest275-21systemd-journal20:55:010
298069983,2cyclictest9304-21awk19:35:010
298069982,3cyclictest24771-21perf22:35:010
17416280,0sleep10-21swapper/121:05:011
298169973,2cyclictest275-21systemd-journal21:02:573
298169972,4cyclictest658-21snmpd23:08:463
298129973,3cyclictest275-21systemd-journal23:15:002
298129972,3cyclictest275-21systemd-journal23:40:002
298089974,2cyclictest275-21systemd-journal00:00:001
298089974,2cyclictest22-21ksoftirqd/120:05:011
298089973,3cyclictest560-21gdbus23:34:591
298089973,3cyclictest12152-21cat00:30:101
298089973,1cyclictest11237-21idleruntime-cro00:30:011
298089972,3cyclictest15956-21munin-run22:15:001
298089971,5cyclictest20377-21awk22:25:001
298089970,4cyclictest11560-21awk22:05:001
298069973,3cyclictest4526-21cron00:19:550
298069973,3cyclictest3577-21ntpq19:20:160
298169965,1cyclictest3342-21dump-pmu-power20:35:013
298169963,2cyclictest663-21runrttasks22:11:513
298169963,2cyclictest658-21snmpd19:10:083
298169963,2cyclictest658-21snmpd00:36:343
298169963,2cyclictest5449-21taskset23:03:153
298169963,2cyclictest275-21systemd-journal23:11:543
298169963,2cyclictest26304-21expr23:50:083
298169963,2cyclictest24089-21cat23:45:083
298169963,2cyclictest14549-21cat23:25:003
298169962,3cyclictest658-21snmpd23:40:013
298169962,3cyclictest658-21snmpd23:39:203
298169962,3cyclictest658-21snmpd22:56:223
298169962,3cyclictest658-21snmpd22:30:123
298169962,3cyclictest658-21snmpd21:20:183
298169962,3cyclictest658-21snmpd21:09:363
298169962,3cyclictest658-21snmpd20:46:083
298169962,3cyclictest658-21snmpd20:13:303
298169962,3cyclictest658-21snmpd20:05:393
298169962,3cyclictest658-21snmpd19:51:183
298169962,3cyclictest658-21snmpd19:40:003
298169962,3cyclictest658-21snmpd19:15:123
298169962,3cyclictest658-21snmpd00:34:373
298169962,3cyclictest5863-21cut19:25:183
298169962,3cyclictest5349-21expr00:15:093
298169962,3cyclictest504-21dbus-daemon23:20:003
298169962,3cyclictest504-21dbus-daemon19:41:593
298169962,3cyclictest31842-21expr20:25:133
298169962,3cyclictest275-21systemd-journal21:45:093
298169962,3cyclictest20318-21cat21:10:143
298169962,3cyclictest12477-21cat22:05:143
298169962,2cyclictest29339-21expr21:30:143
298169960,5cyclictest11197-21sshd00:29:513
298169960,3cyclictest15209-21cat23:25:133
298169960,2cyclictest21754-21mailstats22:25:163
298129963,2cyclictest658-21snmpd23:56:332
298129963,2cyclictest658-21snmpd22:04:232
298129963,2cyclictest658-21snmpd21:46:342
298129963,2cyclictest658-21snmpd21:14:442
298129963,2cyclictest658-21snmpd20:05:102
298129963,2cyclictest275-21systemd-journal22:40:142
298129963,2cyclictest275-21systemd-journal22:31:262
298129963,2cyclictest275-21systemd-journal22:10:362
298129963,2cyclictest275-21systemd-journal21:09:592
298129963,2cyclictest11089-21grep20:50:132
298129962,3cyclictest658-21snmpd23:27:132
298129962,3cyclictest658-21snmpd23:04:252
298129962,3cyclictest658-21snmpd21:35:492
298129962,3cyclictest658-21snmpd21:15:092
298129962,3cyclictest658-21snmpd20:45:352
298129962,3cyclictest658-21snmpd20:40:442
298129962,3cyclictest658-21snmpd20:28:502
298129962,3cyclictest658-21snmpd20:02:102
298129962,3cyclictest658-21snmpd19:45:112
298129962,3cyclictest658-21snmpd19:44:232
298129962,3cyclictest658-21snmpd19:31:232
298129962,3cyclictest504-21dbus-daemon19:30:012
298129962,3cyclictest3879-21expr20:35:132
298129962,3cyclictest31870-21expr22:50:092
298129962,3cyclictest30581-21sed19:10:142
298129962,3cyclictest275-21systemd-journal21:43:292
298129962,3cyclictest275-21systemd-journal00:32:562
298129962,3cyclictest12731-21apt-get20:55:112
298129962,3cyclictest11052-21memory23:15:122
298129960,6cyclictest0-21swapper/223:35:232
298129960,2cyclictest11781-21/usr/sbin/munin22:05:192
298089965,1cyclictest22-21ksoftirqd/121:55:001
298089963,2cyclictest658-21snmpd22:44:251
298089963,2cyclictest275-21systemd-journal23:50:141
298089963,2cyclictest12700-21tr19:40:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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