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2026-06-18 - 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 Thu Jun 18, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
283022307281,17sleep20-21swapper/207:10:012
283022307281,17sleep20-21swapper/207:10:002
281382274242,21sleep10-21swapper/107:08:101
281382274242,21sleep10-21swapper/107:08:101
282292271216,19sleep30-21swapper/307:09:213
282292271216,19sleep30-21swapper/307:09:213
282642263230,20sleep00-21swapper/007:09:420
282642263230,20sleep00-21swapper/007:09:420
128092650,2sleep012801-21ntp_kernel_err11:20:150
120422640,0sleep30-21swapper/310:03:143
256212610,1sleep125618-21ssh12:05:451
267632590,0sleep326764-21sh09:52:533
3852570,0sleep20-21swapper/211:50:442
233902560,0sleep30-21swapper/312:24:303
207412550,0sleep10-21swapper/109:30:121
16682540,0sleep20-21swapper/209:37:582
152742540,0sleep10-21swapper/111:02:381
64712530,0sleep20-21swapper/211:16:212
116172160,0sleep00-21swapper/011:39:060
295332150,0sleep20-21swapper/210:32:202
240622140,0sleep00-21swapper/009:50:510
68232130,0sleep10-21swapper/109:40:291
269622130,0sleep20-21swapper/212:06:472
284009994,3cyclictest275-21systemd-journal11:40:321
284129983,4cyclictest25624-21sshd12:05:453
284079984,3cyclictest16798-21sshd10:25:132
284009987,1cyclictest22-21ksoftirqd/111:40:001
284009986,1cyclictest22-21ksoftirqd/111:35:001
284009985,2cyclictest22-21ksoftirqd/108:30:011
283989984,3cyclictest275-21systemd-journal12:05:450
283989983,2cyclictest275-21systemd-journal12:35:280
283989982,3cyclictest16067-21dump-pmu-power09:05:010
283989980,0cyclictest141rcu_preempt09:15:110
284129974,2cyclictest31000-21ssh10:33:283
284129973,3cyclictest658-21snmpd07:44:123
284129973,3cyclictest658-21snmpd07:32:123
284129973,3cyclictest5315-21tune2fs09:40:133
284129973,3cyclictest275-21systemd-journal11:14:163
284129973,1cyclictest0-21swapper/311:26:193
284129973,1cyclictest0-21swapper/310:58:393
284129972,4cyclictest22370-21ssh09:30:273
284129970,7cyclictest0-21swapper/311:51:103
284079976,1cyclictest28-21ksoftirqd/209:20:002
284079976,1cyclictest18154-21ssh12:01:262
284079973,3cyclictest275-21systemd-journal10:17:022
284079973,2cyclictest275-21systemd-journal09:45:062
284079970,6cyclictest275-21systemd-journal08:45:152
284079970,1cyclictest29594-21munin-run09:55:012
284009973,3cyclictest658-21snmpd08:47:141
284009973,3cyclictest658-21snmpd08:05:221
284009973,3cyclictest658-21snmpd07:57:341
284009973,3cyclictest560-21gdbus09:15:011
284009973,3cyclictest275-21systemd-journal11:10:311
284009973,3cyclictest16295-21awk10:25:011
284009970,4cyclictest7219-21awk12:15:001
283989976,1cyclictest12-21ksoftirqd/011:20:010
283989973,3cyclictest658-21snmpd09:27:450
283989973,3cyclictest275-21systemd-journal09:13:410
7288260,0sleep20-21swapper/208:45:002
284129966,0cyclictest0-21swapper/311:06:543
284129966,0cyclictest0-21swapper/307:59:593
284129963,3cyclictest11301-21kworker/3:011:56:153
284129963,2cyclictest937-21ssh10:35:053
284129963,2cyclictest658-21snmpd12:28:503
284129963,2cyclictest34-21ksoftirqd/309:45:113
284129963,2cyclictest31144-21awk09:55:173
284129963,2cyclictest28772-21ssh11:49:033
284129963,2cyclictest22357-21ssh09:11:443
284129963,2cyclictest16295-21ssh11:41:143
284129963,1cyclictest0-21swapper/312:32:253
284129963,1cyclictest0-21swapper/310:40:333
284129963,1cyclictest0-21swapper/309:22:183
284129962,3cyclictest997-21expr08:30:113
284129962,3cyclictest9783-21cat12:35:123
284129962,3cyclictest8219-21memory08:45:163
284129962,3cyclictest658-21snmpd12:11:293
284129962,3cyclictest658-21snmpd11:02:363
284129962,3cyclictest658-21snmpd10:51:573
284129962,3cyclictest658-21snmpd10:22:383
284129962,3cyclictest658-21snmpd07:47:553
284129962,3cyclictest658-21snmpd07:22:273
284129962,3cyclictest658-21snmpd07:12:403
284129962,3cyclictest504-21dbus-daemon11:25:023
284129962,3cyclictest491-21systemd-logind09:28:173
284129962,3cyclictest30055-21cat11:30:203
284129962,3cyclictest275-21systemd-journal08:19:033
284129962,3cyclictest17002-21cat10:25:153
284129962,3cyclictest13026-21mailstats08:55:183
284129962,3cyclictest0-21swapper/311:36:093
284129962,1cyclictest0-21swapper/312:01:233
284129962,1cyclictest0-21swapper/310:16:103
284129962,1cyclictest0-21swapper/310:11:123
284129962,1cyclictest0-21swapper/310:07:203
284129962,1cyclictest0-21swapper/309:35:513
284129961,3cyclictest275-21systemd-journal09:15:013
284129961,3cyclictest275-21systemd-journal08:50:163
284129960,6cyclictest0-21swapper/312:15:363
284129960,6cyclictest0-21swapper/308:20:033
284129960,6cyclictest0-21swapper/307:29:543
284129960,5cyclictest3497-21gltestperf08:35:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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