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2026-05-18 - 08:18
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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 Mon May 18, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
277622315289,17sleep20-21swapper/219:07:552
275902276245,21sleep10-21swapper/119:05:531
276812273243,20sleep00-21swapper/019:06:520
275772265235,20sleep30-21swapper/319:05:463
111532970,0sleep00-21swapper/021:25:020
151122640,1sleep215111-21sort23:25:012
32632580,0sleep00-21swapper/000:15:200
143702570,0sleep00-21swapper/023:05:010
140682560,0sleep20-21swapper/221:45:312
118802550,0sleep10-21swapper/122:24:101
109552220,0sleep10-21swapper/121:44:301
87632200,0sleep20-21swapper/200:39:132
300982180,0sleep00-21swapper/021:16:130
282672180,0sleep30-21swapper/321:55:013
261782170,0sleep20-21swapper/222:13:062
2804299150,12cyclictest20054-21ssh00:25:342
2804299150,11cyclictest6554-21ssh23:00:142
2804299150,11cyclictest3369-21ssh22:57:592
2804299150,11cyclictest28454-21ssh21:55:052
111762150,0sleep20-21swapper/200:20:192
2804299141,10cyclictest2568-21expr00:15:162
2804299141,10cyclictest0-21swapper/223:10:052
2804299140,11cyclictest8801-21ssh21:42:482
2804299140,11cyclictest7338-21ssh22:20:372
2804299140,11cyclictest7236-21ssh22:01:082
2804299140,11cyclictest5841-21ssh22:40:102
2804299140,11cyclictest4066-21ssh22:38:592
2804299140,11cyclictest31016-21ssh00:13:132
2804299140,11cyclictest19211-21ssh00:05:292
2804299140,11cyclictest1429-21ssh21:38:312
2804299140,11cyclictest13745-21ssh00:02:392
2804299140,10cyclictest6900-21ssh23:39:242
2804299140,10cyclictest5186-21sh21:20:362
2804299140,10cyclictest4649-21ssh23:57:032
2804299140,10cyclictest19558-21ssh22:09:202
2804299140,10cyclictest16124-21ssh22:45:332
2804299140,10cyclictest15844-21ssh22:25:502
2804299131,9cyclictest17746-21if_err_enp4s019:55:152
2804299131,7cyclictest12253-21/usr/sbin/munin21:25:152
2804299130,9cyclictest18118-21diskmemload22:17:192
2804299130,9cyclictest18118-21diskmemload21:30:072
2804299130,10cyclictest4995-21users19:25:202
2804299130,10cyclictest30827-21rm23:53:382
2804299130,10cyclictest29228-21ssh21:15:332
2804299130,10cyclictest28242-21ssh00:30:332
2804299130,10cyclictest26177-21ssh23:30:392
2804299130,10cyclictest24284-21sh22:50:302
2804299130,10cyclictest24000-21ssh22:30:472
2804299130,10cyclictest22966-21ssh21:51:022
2804299130,10cyclictest20743-21ssh21:10:392
2804299130,10cyclictest20743-21ssh21:10:382
2804299130,10cyclictest1800-21ssh23:16:142
2804299130,10cyclictest16928-21ssh23:05:412
2804299130,10cyclictest12187-21missed_timers20:55:152
2804299120,9cyclictest3612-21grep20:35:192
2804299120,8cyclictest6075-21fschecks_count19:30:142
2804299120,8cyclictest31095-21basename20:25:152
2804299120,7cyclictest16555-21ssh23:45:052
2804299120,11cyclictest8266-21diskmemload23:40:012
2804299120,10cyclictest17740-21ssh23:25:312
2804299110,9cyclictest26601-21sed20:15:152
2804299110,7cyclictest2946-11brltty19:40:532
2804299110,7cyclictest20022-21uname20:00:152
2804299110,7cyclictest10149-21open_inodes20:50:172
2804299110,6cyclictest4839-21ls20:40:132
2804299110,6cyclictest15129-21sed21:00:212
2804299110,10cyclictest31007-21headstperf19:15:012
2804299110,10cyclictest21557-21apt-get20:05:132
2804299110,10cyclictest16107-21apt-get21:05:022
2804299110,10cyclictest14829-21apt-get19:50:022
2804299110,10cyclictest13957-21sshd19:45:552
212532110,3sleep334-21ksoftirqd/323:47:363
87112100,1sleep30-21swapper/300:39:103
2804299100,9cyclictest30210-21latency_hist19:15:012
2804299100,6cyclictest29364-21gzip20:20:202
2804299100,10cyclictest0-21swapper/219:35:122
280459992,6cyclictest0-21swapper/323:55:003
280429990,8cyclictest7753-21wc20:45:172
280429990,8cyclictest32687-21apt-get20:30:122
280429990,8cyclictest1611-21df19:20:152
280429990,7cyclictest0-21swapper/220:10:032
280389990,8cyclictest11298-21ssh23:02:431
4173270,0sleep00-21swapper/023:37:160
32619270,0sleep10-21swapper/123:15:191
280459974,2cyclictest658-21snmpd23:07:323
280459973,3cyclictest504-21dbus-daemon23:40:003
280459973,3cyclictest30141-21cron22:55:013
280459973,1cyclictest0-21swapper/322:18:463
280459972,3cyclictest275-21systemd-journal20:45:013
280389974,2cyclictest504-21dbus-daemon21:25:011
280389974,2cyclictest21866-21cron22:50:011
280389973,2cyclictest275-21systemd-journal20:10:091
280389973,2cyclictest275-21systemd-journal19:55:441
280389970,1cyclictest16147-21ssh23:25:131
280349974,2cyclictest501-21in:imuxsock22:17:240
280349974,2cyclictest12-21ksoftirqd/019:55:000
280349973,3cyclictest275-21systemd-journal22:39:050
280349973,3cyclictest275-21systemd-journal21:49:560
280349973,3cyclictest19338-21cat21:10:150
280349973,3cyclictest19338-21cat21:10:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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