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2026-07-02 - 22:07
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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 Thu Jul 02, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
292242280249,20sleep00-21swapper/007:08:170
290692274245,19sleep20-21swapper/207:06:182
292252273241,22sleep10-21swapper/107:08:181
291332265232,22sleep30-21swapper/307:07:073
254282590,0sleep10-21swapper/111:48:311
73792560,0sleep20-21swapper/212:16:232
223552550,0sleep10-21swapper/110:09:361
66022200,0sleep00-21swapper/009:40:160
60142200,0sleep10-21swapper/110:19:131
80132190,0sleep30-21swapper/309:40:423
230662190,0sleep30-21swapper/311:27:223
69722180,0sleep00-21swapper/011:56:310
94472150,0sleep10-21swapper/112:37:201
206092150,0sleep10-21swapper/112:05:131
143952150,0sleep30-21swapper/310:24:163
107272150,0sleep20-21swapper/211:39:592
66612130,0sleep00-21swapper/010:00:060
29470991110,1cyclictest18750irq/134-ahci[0011:00:011
29470991110,1cyclictest18750irq/134-ahci[0011:00:011
2947099108,2cyclictest22-21ksoftirqd/109:25:001
7463290,1sleep3331rcuc/311:56:543
294799998,1cyclictest34-21ksoftirqd/307:55:013
294709998,1cyclictest22-21ksoftirqd/111:05:001
19098290,0sleep00-21swapper/010:26:290
1828290,1sleep0483-21avahi-daemon08:30:010
689280,0sleep10-21swapper/112:31:551
294749982,3cyclictest10736-21munin-run08:50:012
294709987,1cyclictest22-21ksoftirqd/108:00:011
294709986,1cyclictest22-21ksoftirqd/111:35:001
294709983,3cyclictest275-21systemd-journal10:48:381
294709982,3cyclictest15381-21munin-run10:25:011
23564280,0sleep00-21swapper/010:49:150
294799974,2cyclictest658-21snmpd11:39:583
294799974,2cyclictest275-21systemd-journal10:29:453
294799974,2cyclictest16076-11brltty08:18:563
294799973,3cyclictest658-21snmpd11:05:313
294799973,3cyclictest275-21systemd-journal10:50:433
294799973,3cyclictest275-21systemd-journal10:45:013
294799973,3cyclictest275-21systemd-journal10:15:013
294799973,3cyclictest275-21systemd-journal09:27:443
294799973,3cyclictest275-21systemd-journal07:25:013
294799970,7cyclictest0-21swapper/310:16:183
294749974,2cyclictest255742sleep208:10:092
294749973,3cyclictest28257-21df11:50:132
294749973,3cyclictest275-21systemd-journal11:01:082
294749972,2cyclictest19081-21dump-pmu-power11:45:002
294749970,4cyclictest5280-21munin-plugin-st09:40:002
294709976,1cyclictest22-21ksoftirqd/110:00:011
294709975,2cyclictest22-21ksoftirqd/109:40:001
294709975,1cyclictest22-21ksoftirqd/110:40:011
294709973,3cyclictest28820-21cron12:30:001
294709973,1cyclictest20588-21perf12:25:001
294709973,1cyclictest0-21swapper/111:40:231
294709971,3cyclictest16252-21dump-pmu-power10:45:011
294709970,5cyclictest141rcu_preempt12:15:101
294699976,0cyclictest0-21swapper/012:11:490
294699974,2cyclictest275-21systemd-journal09:11:030
294699973,3cyclictest658-21snmpd08:09:340
294699973,3cyclictest658-21snmpd07:12:170
294699973,3cyclictest275-21systemd-journal12:24:360
294699973,3cyclictest16076-11brltty11:26:090
294699973,1cyclictest0-21swapper/012:35:020
27949270,0sleep00-21swapper/009:53:090
25069270,0sleep00-21swapper/012:27:060
23002270,0sleep30-21swapper/308:03:453
294799966,0cyclictest26589-21ssh10:30:513
294799966,0cyclictest0-21swapper/307:15:163
294799965,1cyclictest34-21ksoftirqd/312:15:003
294799963,2cyclictest31863-21sh09:35:363
294799963,2cyclictest29299-21apt-get12:30:113
294799963,2cyclictest29108-21ssh12:10:143
294799963,2cyclictest275-21systemd-journal11:40:193
294799963,2cyclictest275-21systemd-journal08:20:433
294799963,2cyclictest25871-21gdbus11:15:063
294799963,2cyclictest1717-21sshd08:28:453
294799963,2cyclictest10096-21cat11:00:153
294799963,0cyclictest141rcu_preempt07:55:153
294799962,3cyclictest9776-21cut08:45:173
294799962,3cyclictest9297-21seq10:00:553
294799962,3cyclictest6755-21cat08:40:133
294799962,3cyclictest658-21snmpd12:23:043
294799962,3cyclictest658-21snmpd11:32:453
294799962,3cyclictest658-21snmpd10:36:533
294799962,3cyclictest658-21snmpd09:45:413
294799962,3cyclictest658-21snmpd08:56:453
294799962,3cyclictest4678-21cat09:20:103
294799962,3cyclictest29199-21cat09:15:143
294799962,3cyclictest28399-21cut11:50:143
294799962,3cyclictest23584-21cat08:05:123
294799962,3cyclictest21280-21seq12:25:123
294799962,3cyclictest20717-21head09:10:143
294799962,3cyclictest12341-21cat07:40:163
294799962,3cyclictest1-21systemd11:10:193
294799962,3cyclictest11074-21ls08:50:133
294799962,2cyclictest275-21systemd-journal07:45:113
294799962,1cyclictest0-21swapper/312:39:013
294799962,1cyclictest0-21swapper/310:55:223
294799962,1cyclictest0-21swapper/310:55:223
294799960,6cyclictest0-21swapper/309:33:563
294799960,4cyclictest275-21systemd-journal09:55:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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