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2025-12-10 - 23:18
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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 Dec 10, 2025 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
256782300233,21sleep10-21swapper/107:05:421
258572281248,21sleep00-21swapper/007:07:550
260132279247,20sleep30-21swapper/307:09:393
258942260225,22sleep20-21swapper/207:08:262
49342630,0sleep20-21swapper/209:29:552
281352600,0sleep20-21swapper/207:10:222
221042600,0sleep30-21swapper/311:15:043
96062590,0sleep00-21swapper/011:59:020
322932590,0sleep30-21swapper/312:18:583
233662590,0sleep20-21swapper/211:42:542
163582580,0sleep00-21swapper/012:31:370
310602550,0sleep30-21swapper/311:22:173
268662540,0sleep00-21swapper/011:45:210
268082240,0sleep30-21swapper/312:14:383
237372200,0sleep00-21swapper/011:43:200
86872150,0sleep122-21ksoftirqd/111:57:591
266572150,1sleep026656-21latency_hist09:20:000
247822150,0sleep00-21swapper/011:16:330
36162140,0sleep10-21swapper/110:25:201
194572130,0chrt0-21swapper/110:40:231
277092120,0sleep30-21swapper/310:18:553
142932110,2sleep228-21ksoftirqd/209:37:442
2617299104,3cyclictest27616-21turbostat11:20:012
2616699108,1cyclictest0-21swapper/012:02:530
28787290,1sleep128782-21munin-node07:15:011
261769997,1cyclictest9584-21turbostat08:55:003
261769995,3cyclictest508-21dbus-daemon07:30:293
261729993,3cyclictest19299-21munin-run08:05:012
261689993,3cyclictest1323-21idleruntime-cro07:25:011
261669993,3cyclictest19982-21systemd-journal10:35:010
32727280,1sleep00-21swapper/009:25:130
261769985,2cyclictest1-21systemd07:10:013
261769983,3cyclictest19982-21systemd-journal11:30:013
261769983,3cyclictest19982-21systemd-journal10:34:283
261769983,3cyclictest19982-21systemd-journal09:53:593
261769983,3cyclictest19982-21systemd-journal09:53:593
261769983,3cyclictest19982-21systemd-journal09:50:013
261769983,3cyclictest19982-21systemd-journal07:36:193
261729984,3cyclictest19982-21systemd-journal10:35:182
261729983,3cyclictest19982-21systemd-journal12:28:472
261729980,7cyclictest12852-21apt-get07:50:132
261729980,4cyclictest10872-21munin-run11:05:012
261689986,1cyclictest18750irq/134-ahci[0009:25:001
261689985,2cyclictest11407-21head12:00:161
261689984,3cyclictest508-21dbus-daemon11:00:011
261689984,3cyclictest32065-21apt-get09:25:101
261689983,3cyclictest19982-21systemd-journal10:50:011
261689983,3cyclictest19982-21systemd-journal08:18:521
261669987,1cyclictest12-21ksoftirqd/009:45:010
261669984,2cyclictest19982-21systemd-journal10:55:130
261669983,3cyclictest19982-21systemd-journal07:51:200
261669983,3cyclictest19982-21systemd-journal07:49:150
261669982,3cyclictest16278-21idleruntime-cro09:10:000
261669982,3cyclictest11898-21perf10:05:010
261669981,3cyclictest19982-21systemd-journal11:10:210
6604270,0sleep20-21swapper/211:55:272
261769974,2cyclictest8791-21ssh11:02:043
261769974,2cyclictest508-21dbus-daemon11:57:053
261769974,2cyclictest508-21dbus-daemon10:58:403
261769974,2cyclictest11736-21in:imuxsock09:15:003
261769973,3cyclictest31990-21cut11:50:163
261769973,3cyclictest30654-21snmpd11:38:233
261769973,3cyclictest30654-21snmpd08:44:473
261769973,3cyclictest14030-21cron09:04:593
261769973,3cyclictest1-21systemd09:05:103
261769973,3cyclictest1161-21sshd10:24:123
261769973,3cyclictest10954-21wc12:00:143
261769972,3cyclictest19982-21systemd-journal07:43:503
261729974,2cyclictest508-21dbus-daemon07:40:542
261729974,2cyclictest29725-21hddtemp_smartct10:50:162
261729974,2cyclictest11736-21in:imuxsock11:25:222
261729973,3cyclictest508-21dbus-daemon12:17:312
261729973,3cyclictest2196-21ntpq12:20:162
261729973,3cyclictest19982-21systemd-journal10:59:562
261729973,3cyclictest19982-21systemd-journal09:23:322
261729973,3cyclictest19982-21systemd-journal08:14:422
261729973,3cyclictest19982-21systemd-journal08:09:172
261729973,3cyclictest0-21swapper/212:07:422
261729973,3cyclictest0-21swapper/210:10:122
261729972,3cyclictest19982-21systemd-journal09:07:162
261729971,3cyclictest19441-21munin-run12:35:002
261729970,4cyclictest19982-21systemd-journal10:19:162
261729970,1cyclictest189422sleep211:11:352
261689974,2cyclictest668-21runrttasks07:53:011
261689974,2cyclictest5065-21idleruntime-cro08:44:591
261689974,2cyclictest19982-21systemd-journal08:46:241
261689974,2cyclictest17263-21munin-run10:10:011
261689973,3cyclictest30654-21snmpd12:16:491
261689973,3cyclictest30654-21snmpd07:30:521
261689973,3cyclictest19982-21systemd-journal10:19:161
261689973,3cyclictest19982-21systemd-journal09:34:121
261689973,3cyclictest19982-21systemd-journal09:08:121
261689973,3cyclictest19116-21gdbus10:35:001
261689973,3cyclictest11736-21in:imuxsock12:20:261
261689973,2cyclictest16918-21sshd07:58:531
261689973,2cyclictest16918-21sshd07:58:531
261689973,1cyclictest0-21swapper/112:11:241
261689973,1cyclictest0-21swapper/111:37:091
261689973,1cyclictest0-21swapper/111:12:251
261689973,1cyclictest0-21swapper/109:44:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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