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2026-05-22 - 15:09
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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 Fri May 22, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
225222290260,19sleep20-21swapper/219:06:402
226172270238,21sleep30-21swapper/319:07:373
227462264232,22sleep10-21swapper/119:09:171
225142264235,19sleep00-21swapper/019:06:350
138092620,0sleep00-21swapper/021:30:050
280262590,0sleep20-21swapper/220:30:132
280262590,0sleep20-21swapper/220:30:122
133262590,0sleep10-21swapper/122:09:111
59052560,0sleep30-21swapper/322:24:113
272752560,0sleep20-21swapper/220:30:012
185692550,0sleep10-21swapper/121:32:331
204582530,0sleep00-21swapper/022:51:270
64852140,0sleep10-21swapper/123:03:011
156682140,0sleep30-21swapper/323:08:303
243402100,0sleep20-21swapper/200:32:142
2288999109,1cyclictest34-21ksoftirqd/320:15:013
27371280,0sleep10-21swapper/123:15:181
25896280,0sleep30-21swapper/322:55:133
228889986,1cyclictest959-21users22:20:202
228889981,6cyclictest9989-21sed21:00:212
228869987,1cyclictest12-21ksoftirqd/000:40:010
228869986,2cyclictest12-21ksoftirqd/021:09:590
228869984,3cyclictest275-21systemd-journal21:04:590
28561270,1sleep1211rcuc/123:35:271
228899976,1cyclictest34-21ksoftirqd/300:25:013
228899976,1cyclictest30223-21ssh22:19:323
228899975,1cyclictest34-21ksoftirqd/323:20:013
228899973,3cyclictest658-21snmpd23:30:533
228899973,3cyclictest32207-21cut22:40:023
228899972,3cyclictest275-21systemd-journal22:02:133
228899972,1cyclictest0-21swapper/323:35:203
228899970,6cyclictest275-21systemd-journal19:40:493
228889976,1cyclictest28-21ksoftirqd/223:15:012
228889976,1cyclictest28-21ksoftirqd/222:40:012
228889973,3cyclictest658-21snmpd22:30:012
228889973,3cyclictest275-21systemd-journal20:09:352
228889973,2cyclictest275-21systemd-journal22:14:462
228889971,1cyclictest141rcu_preempt22:50:112
228889971,1cyclictest141rcu_preempt22:03:202
228889970,4cyclictest28-21ksoftirqd/223:35:112
228879975,1cyclictest22412-21ssh21:55:021
228879973,2cyclictest275-21systemd-journal22:28:051
228869976,1cyclictest12-21ksoftirqd/022:00:010
228869973,1cyclictest0-21swapper/023:00:580
228869972,3cyclictest560-21gdbus23:55:010
228869970,7cyclictest0-21swapper/023:09:250
228869970,3cyclictest101401cat23:45:010
19103270,1sleep119101-21ssh23:50:141
13105270,0sleep10-21swapper/123:06:331
228899964,2cyclictest15763-21memory22:10:163
228899963,2cyclictest9443-21ssh22:45:143
228899963,2cyclictest658-21snmpd20:51:593
228899963,2cyclictest658-21snmpd20:46:413
228899963,2cyclictest658-21snmpd00:22:333
228899963,2cyclictest31669-21rm21:20:333
228899963,2cyclictest29379-21uptime00:15:213
228899963,2cyclictest275-21systemd-journal21:36:083
228899963,2cyclictest25943-21sshd19:15:093
228899963,2cyclictest23314-21ssh22:53:393
228899963,2cyclictest21047-21sh22:32:553
228899963,2cyclictest12101-21rm23:45:203
228899963,2cyclictest10345-21ssh22:06:533
228899963,1cyclictest0-21swapper/321:54:293
228899962,3cyclictest658-21snmpd23:40:143
228899962,3cyclictest658-21snmpd21:25:553
228899962,3cyclictest658-21snmpd20:26:173
228899962,3cyclictest658-21snmpd20:20:233
228899962,3cyclictest658-21snmpd19:35:103
228899962,3cyclictest658-21snmpd19:28:493
228899962,3cyclictest658-21snmpd00:35:033
228899962,3cyclictest658-21snmpd00:12:453
228899962,3cyclictest658-21snmpd00:00:563
228899962,3cyclictest504-21dbus-daemon23:13:213
228899962,3cyclictest471-21find19:30:123
228899962,3cyclictest3643-21wc23:20:203
228899962,3cyclictest32642-21which20:40:123
228899962,3cyclictest31699-21systemctl21:40:183
228899962,3cyclictest29301-11brltty21:00:063
228899962,3cyclictest28488-21expr19:20:123
228899962,3cyclictest275-21systemd-journal21:57:243
228899962,3cyclictest22041-21tail21:15:163
228899962,3cyclictest19518-21cat23:50:153
228899962,3cyclictest11083-21cat21:05:133
228899962,2cyclictest275-21systemd-journal21:47:113
228899962,1cyclictest0-21swapper/323:25:403
228899962,1cyclictest0-21swapper/323:02:403
228899962,1cyclictest0-21swapper/321:11:043
228899962,1cyclictest0-21swapper/300:06:553
228899961,4cyclictest25043-21sshd00:32:483
228899961,3cyclictest275-21systemd-journal22:40:033
228899960,2cyclictest9407-21/usr/sbin/munin19:50:173
228899960,2cyclictest275-21systemd-journal19:55:243
228899960,1cyclictest15857-21munin-run20:05:003
228889966,0cyclictest0-21swapper/223:50:252
228889964,2cyclictest6686-21ssh23:42:162
228889964,1cyclictest12295-21ssh21:48:412
228889963,2cyclictest674-21lldpd20:22:442
228889963,2cyclictest658-21snmpd20:40:082
228889963,2cyclictest501-21in:imuxsock23:06:372
228889963,2cyclictest501-21in:imuxsock21:15:332
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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