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2026-07-22 - 08:11
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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 Wed Jul 22, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
149852309279,19sleep20-21swapper/219:07:052
149842305274,20sleep10-21swapper/119:07:041
149422273212,21sleep00-21swapper/019:06:300
151672260227,21sleep30-21swapper/319:09:233
57292610,0sleep10-21swapper/121:29:291
43112590,0sleep30-21swapper/323:25:453
268602590,0sleep30-21swapper/321:22:063
272132580,0sleep122-21ksoftirqd/120:45:131
117502570,0sleep00-21swapper/000:29:590
19402560,0sleep00-21swapper/021:00:140
213892520,0sleep10-21swapper/121:19:171
95342180,0sleep00-21swapper/023:49:280
326152180,0sleep30-21swapper/319:45:013
207492180,0sleep00-21swapper/000:35:130
110292170,1sleep211026-21idleruntime-cro00:10:002
280112140,1sleep028006-21gpgv19:35:010
319782120,0sleep20-21swapper/222:44:112
87912100,0chrt0-21swapper/300:27:433
33192100,0sleep20-21swapper/222:06:322
153399992,4cyclictest27722-21awk19:35:012
153309995,3cyclictest658-21snmpd22:38:410
153419985,2cyclictest658-21snmpd22:40:523
153399984,3cyclictest19370-21memory23:35:152
153399984,3cyclictest19370-21memory23:35:152
153349987,1cyclictest22-21ksoftirqd/100:19:591
153349986,1cyclictest25627-21ssh22:00:221
153349985,2cyclictest22-21ksoftirqd/123:25:001
153349984,3cyclictest275-21systemd-journal00:31:371
153349982,5cyclictest141rcu_preempt21:56:311
153309980,5cyclictest17110-21turbostat22:55:010
2855270,0sleep10-21swapper/122:06:101
153419974,2cyclictest275-21systemd-journal19:39:423
153419973,3cyclictest658-21snmpd23:47:443
153419973,3cyclictest658-21snmpd22:49:583
153419973,3cyclictest275-21systemd-journal20:57:513
153419973,3cyclictest275-21systemd-journal20:46:123
153419972,4cyclictest0-21swapper/321:30:133
153399976,1cyclictest6738-21ssh23:27:372
153399974,2cyclictest275-21systemd-journal21:44:372
153399973,3cyclictest658-21snmpd20:31:582
153399973,3cyclictest658-21snmpd00:12:372
153399973,3cyclictest5107-21ntp_states00:25:192
153399973,3cyclictest20539-21sshd19:18:192
153349976,1cyclictest51050irq/138-enp4s0-21:21:281
153349976,1cyclictest22-21ksoftirqd/123:35:001
153349976,1cyclictest22-21ksoftirqd/121:45:011
153349976,1cyclictest22-21ksoftirqd/119:15:011
153349975,1cyclictest22-21ksoftirqd/100:05:011
153349975,1cyclictest221ksoftirqd/121:10:011
153349973,3cyclictest504-21dbus-daemon00:00:011
153349973,3cyclictest275-21systemd-journal22:51:221
153349973,3cyclictest275-21systemd-journal21:34:111
153349973,3cyclictest2374-21cat21:00:151
153349973,0cyclictest2032-21/usr/sbin/munin23:25:181
153349972,0cyclictest22-21ksoftirqd/100:10:161
153309976,1cyclictest12-21ksoftirqd/021:40:000
153309976,1cyclictest12-21ksoftirqd/000:00:010
153309975,1cyclictest12-21ksoftirqd/020:30:000
153309975,1cyclictest12-21ksoftirqd/019:20:020
153309973,3cyclictest658-21snmpd22:06:390
153309973,3cyclictest275-21systemd-journal21:20:210
153309973,1cyclictest141rcu_preempt23:15:210
153309973,1cyclictest0-21swapper/021:15:350
1290270,0sleep00-21swapper/022:45:140
153419966,0cyclictest0-21swapper/323:21:433
153419966,0cyclictest0-21swapper/321:51:153
153419966,0cyclictest0-21swapper/321:38:223
153419966,0cyclictest0-21swapper/320:15:223
153419963,2cyclictest9483-21cpuspeed_turbos22:50:123
153419963,2cyclictest9213-21memory22:10:173
153419963,2cyclictest658-21snmpd21:08:093
153419963,2cyclictest504-21dbus-daemon19:34:423
153419963,2cyclictest501-21in:imuxsock20:20:183
153419963,2cyclictest3936-21ssh23:05:473
153419963,2cyclictest32418-21ssh23:04:073
153419963,2cyclictest30394-21sh23:41:503
153419963,2cyclictest27948-21ssh00:39:513
153419963,2cyclictest27752-21head00:00:153
153419963,2cyclictest275-21systemd-journal21:47:573
153419963,2cyclictest275-21systemd-journal21:11:343
153419963,2cyclictest23895-21tune2fs21:40:153
153419963,2cyclictest12451-21sh22:31:483
153419962,3cyclictest658-21snmpd23:35:093
153419962,3cyclictest658-21snmpd23:35:093
153419962,3cyclictest658-21snmpd23:30:363
153419962,3cyclictest658-21snmpd22:56:103
153419962,3cyclictest658-21snmpd22:18:073
153419962,3cyclictest658-21snmpd20:50:163
153419962,3cyclictest658-21snmpd19:56:333
153419962,3cyclictest658-21snmpd19:48:513
153419962,3cyclictest658-21snmpd19:18:443
153419962,3cyclictest658-21snmpd19:14:413
153419962,3cyclictest658-21snmpd00:24:343
153419962,3cyclictest658-21snmpd00:05:423
153419962,3cyclictest275-21systemd-journal22:25:193
153419962,3cyclictest275-21systemd-journal19:23:523
153419962,3cyclictest24536-21sed19:25:193
153419962,3cyclictest23117-21grep20:35:123
153419962,3cyclictest21104-21cat20:30:153
153419962,3cyclictest16804-21cut21:55:183
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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