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2026-04-17 - 09:07
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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 50 highest latencies:
System rackaslot8.osadl.org (updated Fri Apr 17, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
276762296245,42sleep10-21swapper/119:07:331
276142269242,17sleep20-21swapper/219:06:452
278092264235,19sleep00-21swapper/019:09:180
276632263232,21sleep30-21swapper/319:07:233
15302650,0sleep20-21swapper/222:38:532
189192630,0sleep20-21swapper/200:08:332
312182580,0sleep30-21swapper/321:57:243
80592460,0sleep30-21swapper/323:41:513
315532170,0sleep00-21swapper/023:36:160
311372150,0sleep10-21swapper/122:36:381
288492150,1sleep012-21ksoftirqd/022:35:170
23512150,0sleep10-21swapper/122:19:581
156742130,0sleep20-21swapper/221:05:132
237472120,0sleep30-21swapper/321:13:313
24895290,0sleep20-21swapper/221:14:262
9179280,0sleep20-21swapper/200:22:062
3739280,0sleep30-21swapper/300:19:153
279809983,3cyclictest275-21systemd-journal19:41:433
279769983,1cyclictest13142-1kworker/u9:221:20:202
279739986,1cyclictest17137-21sh22:08:561
8621270,0sleep00-21swapper/021:43:550
279809976,1cyclictest17456-21diskmemload22:54:423
279809973,3cyclictest658-21snmpd21:48:423
279809973,3cyclictest29723-21ntpq23:35:173
279809973,3cyclictest28259-21ls22:55:153
279809973,3cyclictest18515-21cron22:10:013
279809973,3cyclictest11098-21wc22:25:013
279809972,3cyclictest275-21systemd-journal23:57:183
279769974,2cyclictest18935-21cstates21:50:142
279769973,3cyclictest504-21dbus-daemon22:25:012
279769973,3cyclictest504-21dbus-daemon22:15:012
279769973,3cyclictest504-21dbus-daemon20:00:002
279769973,1cyclictest13011-21basename21:00:002
279769972,3cyclictest658-21snmpd23:32:042
279769970,6cyclictest0-21swapper/200:15:392
279739976,1cyclictest22-21ksoftirqd/120:15:001
279739974,2cyclictest7622-21sshd23:02:021
279739973,3cyclictest1-21systemd20:32:501
279739970,3cyclictest17907-21awk21:30:001
279689973,3cyclictest29828-21cron20:25:000
279689973,3cyclictest19268-21smart_sda21:10:180
279689973,3cyclictest18120-21sshd23:48:210
17115270,0sleep10-21swapper/123:07:541
16063270,0sleep30-21swapper/323:26:543
12482270,0sleep00-21swapper/023:05:120
279809966,0cyclictest0-21swapper/321:26:233
279809963,2cyclictest7161-21ssh22:02:313
279809963,2cyclictest658-21snmpd20:44:183
279809963,2cyclictest658-21snmpd19:21:243
279809963,2cyclictest5750-21ssh00:00:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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