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2026-03-12 - 09:02
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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 rack5slot2.osadl.org (updated Thu Mar 12, 2026 00:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
318582207191,11sleep10-21swapper/119:09:331
316192186169,12sleep30-21swapper/319:06:253
315942186169,12sleep00-21swapper/019:06:060
31581210670,30sleep20-21swapper/219:05:562
98972500,0sleep10-21swapper/100:10:171
62982470,0sleep10-21swapper/100:09:011
97902440,0sleep10-21swapper/122:19:441
255142420,0sleep00-21swapper/023:14:560
93882130,0sleep10-21swapper/119:25:171
166542130,0sleep30-21swapper/322:06:373
197472120,0sleep019750-21cpuspeed22:40:130
3207599110,7cyclictest12207-21apt-get23:40:112
3207599100,9cyclictest31380-21apt-get22:30:102
142212100,0sleep00-21swapper/000:12:400
320759992,6cyclictest27387-21wc23:00:012
320759991,6cyclictest0-21swapper/200:01:282
320759990,9cyclictest0-21swapper/200:05:102
320759990,8cyclictest3647-21apt-get21:45:112
320759990,8cyclictest3226-21apt-get20:20:112
320759990,8cyclictest3044-21apt-get19:15:112
320759990,8cyclictest29683-21/usr/sbin/munin22:45:212
320759990,8cyclictest20576-21apt-get19:50:112
320679992,3cyclictest6038-21munin-run21:15:000
29691290,0sleep30-21swapper/320:05:183
22435290,0sleep10-21swapper/121:38:241
19621290,0sleep00-21swapper/023:27:240
320759980,8cyclictest23043-21apt-get19:55:102
320759980,8cyclictest21572-21smartctl20:55:132
320759980,8cyclictest13139-21apt-get19:35:102
320759980,8cyclictest11898-21gpgv22:05:012
320759980,7cyclictest8391-21apt-get00:10:112
320759980,7cyclictest6335-21rm23:05:122
320759980,7cyclictest5043-21apt-get21:30:122
320759980,7cyclictest32453-21apt22:15:002
320759980,7cyclictest26523-21apt-get00:35:122
320759980,7cyclictest26201-21apt-get23:15:122
320759980,7cyclictest26187-21ssh22:43:112
320759980,7cyclictest24089-21perl21:00:132
320759980,7cyclictest22403-21apt-get23:45:132
320759980,7cyclictest21023-21apt-get22:25:132
320759980,7cyclictest16115-21grep21:35:132
320759980,7cyclictest14129-21apt-get23:25:102
320759980,5cyclictest14735-21fschecks_time21:50:152
320759972,5cyclictest13321-21apt-get20:40:092
320759970,7cyclictest4839-21ssh00:24:232
320759970,7cyclictest471-21dbus-daemon22:00:012
320759970,7cyclictest22225-21latency_hist22:10:002
320759970,7cyclictest18506-21/usr/sbin/munin00:15:142
320759970,7cyclictest16001-21apt-get23:10:102
320759970,7cyclictest13564-21ssh23:24:582
320759970,7cyclictest13564-21ssh23:24:572
320759970,7cyclictest12909-21ssh22:20:222
320759970,7cyclictest0-21swapper/200:30:102
320759970,6cyclictest718-21apt-get20:15:132
320759970,6cyclictest6392-21apt-get00:25:132
320759970,6cyclictest5465-21apt-get20:25:012
320759970,6cyclictest30893-21rm21:42:112
320759970,6cyclictest28620-21apt-get21:10:112
320759970,6cyclictest27732-21apt-config23:00:012
320759970,6cyclictest27178-21apt-get21:25:102
320759970,6cyclictest16868-21ssh21:20:102
320759970,6cyclictest10674-21apt-get19:30:102
320759970,6cyclictest0-21swapper/223:30:102
320759970,6cyclictest0-21swapper/222:50:112
320759970,6cyclictest0-21swapper/220:30:092
320759970,5cyclictest2619-21users22:15:202
320759970,5cyclictest10026-21ssh23:55:042
19456270,6sleep319742-21cpuspeed22:40:123
320769964,2cyclictest0-21swapper/323:05:593
320759961,5cyclictest814-21snmpd20:03:002
320759961,5cyclictest2209-21/usr/sbin/munin23:35:122
320759960,6cyclictest8411-21cpuspeed19:25:132
320759960,6cyclictest7128-21ssh21:15:142
320759960,6cyclictest5720-21apt-get19:20:012
320759960,6cyclictest32527-21apt-get23:50:112
320759960,6cyclictest32186-21sshd19:10:102
320759960,6cyclictest31946-21ntp_states20:10:192
320759960,6cyclictest16164-21diskstats19:40:122
320759960,6cyclictest10009-21perl22:35:132
320759960,5cyclictest28202-21apt20:05:112
320759960,5cyclictest25893-21apt-get21:05:132
320759960,5cyclictest18657-21/usr/sbin/munin19:45:142
320759960,5cyclictest18262-21apt20:50:102
320759960,5cyclictest10830-21munin-node20:35:112
320679962,4cyclictest0-21swapper/022:25:190
320679962,3cyclictest18832-21ssh23:59:240
320679960,6cyclictest6964-21df_inode00:25:160
320679960,1cyclictest17621-21cat00:30:150
320679960,1cyclictest12679-21ssh22:36:110
320769955,0cyclictest4114-21ssh23:51:323
320769955,0cyclictest322-21kworker/3:221:57:043
320769955,0cyclictest0-21swapper/300:16:163
320769953,2cyclictest14687-21pmu-power20:40:163
320769950,5cyclictest0-21swapper/322:59:183
320769950,5cyclictest0-21swapper/322:12:093
320769950,5cyclictest0-21swapper/320:00:023
320769950,4cyclictest30249-21df22:45:143
320769950,4cyclictest18112-21apt-get19:45:123
320769950,0cyclictest0-21swapper/323:40:213
320769950,0cyclictest0-21swapper/322:37:543
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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