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2025-12-28 - 08:28
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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 Sun Dec 28, 2025 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
285332294267,18sleep20-21swapper/219:06:342
286352273245,18sleep10-21swapper/119:07:371
287882272241,20sleep00-21swapper/019:09:330
268432257226,21sleep30-21swapper/319:05:033
165822700,0sleep20-21swapper/200:10:332
143162680,0sleep30-21swapper/323:51:213
143162680,0sleep30-21swapper/323:51:213
140042680,0sleep20-21swapper/200:27:522
305752670,0sleep20-21swapper/222:29:192
44242620,0sleep20-21swapper/221:20:082
44162610,0sleep00-21swapper/000:04:440
276642610,0sleep30-21swapper/322:27:163
111042600,0sleep20-21swapper/222:00:172
210822590,1sleep221083-21unixbench_multi20:00:232
28372570,0sleep10-21swapper/100:03:371
126712520,0sleep30-21swapper/322:55:203
206042220,0sleep00-21swapper/000:13:250
312112160,0sleep20-21swapper/200:19:382
226602150,0sleep20-21swapper/223:20:002
131722150,0sleep228-21ksoftirqd/200:09:252
3372140,0sleep10-21swapper/100:38:351
226312140,0sleep10-21swapper/120:05:201
9242130,0sleep10-21swapper/122:30:191
84112130,0sleep30-21swapper/300:25:003
91692120,0sleep30-21swapper/322:53:463
28929991210,1cyclictest12-21ksoftirqd/021:20:000
181042120,0sleep00-21swapper/023:54:030
181042120,0sleep00-21swapper/023:54:030
2892999108,1cyclictest12-21ksoftirqd/000:00:010
32128280,0sleep20-21swapper/221:53:522
289409985,2cyclictest34-21ksoftirqd/300:00:003
289349983,3cyclictest275-21systemd-journal19:25:451
289349980,4cyclictest23565-21kworker/1:119:39:551
289299985,2cyclictest275-21systemd-journal23:14:080
289299980,7cyclictest18583-21netstat00:30:160
289409974,2cyclictest504-21dbus-daemon23:56:433
289409973,3cyclictest658-21snmpd23:09:253
289409973,3cyclictest658-21snmpd22:19:503
289409973,3cyclictest275-21systemd-journal21:50:013
289409973,3cyclictest17563-21expr22:40:143
289379975,1cyclictest14817-21hddtemp_smartct21:00:152
289379974,2cyclictest275-21systemd-journal21:45:412
289379973,3cyclictest504-21dbus-daemon00:00:002
289379973,3cyclictest31430-21cat20:25:182
289379973,3cyclictest275-21systemd-journal23:40:012
289379973,3cyclictest275-21systemd-journal23:25:412
289379972,3cyclictest275-21systemd-journal22:22:482
289379971,3cyclictest31125-21idleruntime-cro19:15:002
289349974,2cyclictest658-21snmpd23:18:491
289349972,3cyclictest12691-21munin-run19:45:001
289349970,4cyclictest32732-21awk20:30:001
289299973,3cyclictest658-21snmpd19:52:430
289299973,3cyclictest25891-21diskstats21:50:160
289299973,3cyclictest1-21systemd20:12:360
289299973,3cyclictest0-21swapper/021:45:030
289299972,2cyclictest504-21dbus-daemon21:23:280
289299972,1cyclictest13956-21munin-run21:00:010
289299970,6cyclictest17371-21ssh23:16:190
289299970,1cyclictest141rcu_preempt19:45:150
23996270,1sleep10-21swapper/100:15:141
4822260,0sleep30-21swapper/323:45:533
289409966,0cyclictest0-21swapper/323:20:333
289409966,0cyclictest0-21swapper/300:36:063
289409963,2cyclictest7278-21sh21:21:033
289409963,2cyclictest5276-21rm21:38:423
289409963,2cyclictest504-21dbus-daemon21:33:293
289409963,2cyclictest504-21dbus-daemon19:52:553
289409963,2cyclictest3625-21head20:35:163
289409963,2cyclictest31361-21sshd23:42:583
289409963,2cyclictest3065-21ssh00:21:233
289409963,2cyclictest28753-21ssh22:45:573
289409963,2cyclictest275-21systemd-journal22:22:433
289409963,2cyclictest275-21systemd-journal21:17:263
289409963,2cyclictest275-21systemd-journal00:12:333
289409963,2cyclictest23047-21sh22:06:193
289409963,2cyclictest22561-21sh23:00:463
289409963,1cyclictest0-21swapper/322:02:053
289409962,3cyclictest658-21snmpd23:37:253
289409962,3cyclictest658-21snmpd23:30:313
289409962,3cyclictest658-21snmpd23:11:103
289409962,3cyclictest658-21snmpd22:30:143
289409962,3cyclictest658-21snmpd21:53:583
289409962,3cyclictest658-21snmpd20:32:293
289409962,3cyclictest658-21snmpd20:07:453
289409962,3cyclictest658-21snmpd20:00:363
289409962,3cyclictest658-21snmpd19:59:193
289409962,3cyclictest658-21snmpd19:41:343
289409962,3cyclictest658-21snmpd19:11:023
289409962,3cyclictest658-21snmpd00:15:203
289409962,3cyclictest26629-21expr20:15:133
289409962,3cyclictest25496-21sed20:10:213
289409962,3cyclictest19999-21open_files21:10:163
289409962,3cyclictest17615-21systemctl21:05:183
289409962,3cyclictest1407-21seq23:25:273
289409962,3cyclictest1-21systemd22:10:073
289409962,2cyclictest31128-1kworker/u9:222:35:343
289409960,6cyclictest0-21swapper/321:25:123
289409960,6cyclictest0-21swapper/320:52:143
289409960,6cyclictest0-21swapper/300:05:033
289409960,0cyclictest0-21swapper/321:43:443
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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