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2026-03-23 - 05:50
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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 Mar 23, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
279782320290,19sleep20-21swapper/219:06:062
281232289233,18sleep10-21swapper/119:07:581
281582264239,16sleep00-21swapper/019:08:250
280622254228,17sleep30-21swapper/319:07:123
326792590,0sleep20-21swapper/222:15:342
62712580,0sleep20-21swapper/219:30:132
226682580,0sleep10-21swapper/122:29:591
10762550,0sleep30-21swapper/300:32:533
265792540,1sleep00-21swapper/023:10:220
198962180,0sleep10-21swapper/122:08:211
18102180,0sleep00-21swapper/022:36:100
159562180,0sleep00-21swapper/021:45:570
236002150,0sleep30-21swapper/322:10:183
276712140,0sleep20-21swapper/223:30:262
10392140,0sleep30-21swapper/322:55:143
88482120,0sleep20-21swapper/219:35:142
283989996,2cyclictest23399-21users21:50:223
283899993,4cyclictest6880-21idleruntime-cro22:40:001
283989983,3cyclictest275-21systemd-journal20:57:423
283939984,3cyclictest572-21sshd21:56:182
283939983,4cyclictest0-21swapper/223:20:122
283899983,3cyclictest275-21systemd-journal23:25:011
283849987,1cyclictest12-21ksoftirqd/023:00:010
31848270,0sleep00-21swapper/022:55:000
283989973,3cyclictest275-21systemd-journal22:25:013
283989973,2cyclictest275-21systemd-journal22:06:183
283989973,1cyclictest0-21swapper/323:59:593
283989971,5cyclictest6065-21munin-run22:20:013
283939976,1cyclictest28-21ksoftirqd/223:49:592
283939976,1cyclictest28-21ksoftirqd/200:05:002
283939974,2cyclictest30594-21awk21:35:192
283939974,2cyclictest275-21systemd-journal22:05:202
283939974,2cyclictest23570-21diskmemload00:07:102
283939973,3cyclictest658-21snmpd19:50:462
283939973,3cyclictest275-21systemd-journal22:45:462
283939973,3cyclictest275-21systemd-journal21:14:472
283939973,3cyclictest275-21systemd-journal21:14:472
283939973,3cyclictest1704-21packagekitd23:35:002
283899976,1cyclictest22-21ksoftirqd/100:00:001
283899973,3cyclictest504-21dbus-daemon22:18:411
283899973,3cyclictest275-21systemd-journal23:04:581
283899973,3cyclictest275-21systemd-journal21:42:431
283899970,1cyclictest31818-21irqstats20:25:171
283849976,1cyclictest12-21ksoftirqd/023:35:000
283849976,1cyclictest0-21swapper/023:45:160
283849973,3cyclictest658-21snmpd20:13:260
283849973,3cyclictest275-21systemd-journal22:02:250
283849973,3cyclictest275-21systemd-journal00:20:040
283849973,2cyclictest304-21systemd-udevd22:22:350
26991270,1sleep00-21swapper/020:15:150
21768270,0sleep00-21swapper/021:30:180
1785270,0sleep30-21swapper/322:36:093
9642260,1sleep30-21swapper/323:00:193
283989966,0cyclictest0-21swapper/321:18:423
283989964,1cyclictest8631-21cron23:20:013
283989963,2cyclictest9539-21sh21:23:343
283989963,2cyclictest4918-21tune2fs00:35:163
283989963,2cyclictest3979-21ssh23:35:323
283989963,2cyclictest3541-21ssh21:39:233
283989963,2cyclictest25507-21cat23:10:143
283989963,2cyclictest24740-21cat22:50:163
283989963,2cyclictest23088-21ssh21:30:563
283989963,2cyclictest22661-21sh23:47:043
283989963,2cyclictest16410-21ssh23:05:103
283989963,2cyclictest11447-21ssh23:20:473
283989963,1cyclictest0-21swapper/321:57:323
283989963,1cyclictest0-21swapper/321:40:483
283989962,3cyclictest8100-21if_enp4s022:40:163
283989962,3cyclictest658-21snmpd23:50:263
283989962,3cyclictest658-21snmpd20:35:533
283989962,3cyclictest658-21snmpd20:20:013
283989962,3cyclictest658-21snmpd20:00:103
283989962,3cyclictest658-21snmpd19:59:313
283989962,3cyclictest658-21snmpd19:35:433
283989962,3cyclictest658-21snmpd19:32:483
283989962,3cyclictest28971-21cat19:10:153
283989962,3cyclictest27990-21expr00:10:123
283989962,3cyclictest23530-11brltty20:27:123
283989962,3cyclictest17970-21fschecks_count23:25:153
283989962,3cyclictest16403-21if_enp4s022:45:153
283989962,3cyclictest1591-21if_enp4s020:30:163
283989962,3cyclictest1337-21cat19:20:143
283989962,3cyclictest0-21swapper/322:00:133
283989962,1cyclictest0-21swapper/323:32:443
283989962,1cyclictest0-21swapper/322:30:163
283989962,1cyclictest0-21swapper/321:27:173
283989962,1cyclictest0-21swapper/321:11:033
283989962,1cyclictest0-21swapper/321:11:033
283989962,1cyclictest0-21swapper/319:15:453
283989962,1cyclictest0-21swapper/300:17:373
283989961,4cyclictest0-21swapper/323:40:143
283989961,3cyclictest275-21systemd-journal21:05:133
283989961,3cyclictest275-21systemd-journal20:40:123
283989961,2cyclictest12787-21/usr/sbin/munin00:20:153
283989960,1cyclictest26346-21apt-get20:15:113
283939966,0cyclictest0-21swapper/222:53:262
283939966,0cyclictest0-21swapper/220:15:162
283939966,0cyclictest0-21swapper/219:10:472
283939966,0cyclictest0-21swapper/200:26:032
283939963,2cyclictest658-21snmpd20:58:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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