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2026-08-26 - 20:59
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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 Aug 26, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
283352307280,18sleep10-21swapper/107:06:421
283892287256,21sleep20-21swapper/207:07:232
286092279216,21sleep30-21swapper/307:09:573
283542273244,19sleep00-21swapper/007:06:570
211392660,1sleep321132-21ssh12:25:133
89202610,0sleep30-21swapper/310:01:303
17682590,0sleep20-21swapper/207:20:122
49662580,0sleep30-21swapper/307:25:183
235312580,0sleep20-21swapper/210:10:182
256992570,0sleep00-21swapper/011:49:420
90182550,0sleep30-21swapper/311:00:163
19422550,0sleep20-21swapper/209:18:522
312512210,0sleep20-21swapper/212:30:532
93242130,0sleep10-21swapper/107:35:171
2872799133,6cyclictest6912-21ssh11:57:192
2872799123,7cyclictest275-21systemd-journal08:33:172
2872799112,5cyclictest31607-21ssh10:54:492
2872799111,6cyclictest972-21chrt07:16:002
2872799111,1cyclictest8267-21apt-get07:35:112
2872799111,1cyclictest11351-21apt-get12:20:022
2872799110,3cyclictest8961-21ssh12:18:092
2872799110,2cyclictest25916-21ssh09:13:592
2872799110,2cyclictest25507-21ssh11:49:342
2872799110,2cyclictest10601-21ssh09:43:272
2872799110,1cyclictest22121-21grep12:25:182
2873099109,1cyclictest34-21ksoftirqd/311:10:003
2872799103,6cyclictest0-21swapper/209:39:412
2872799100,3cyclictest5563-21chrt07:27:332
2872799100,3cyclictest275-21systemd-journal10:34:472
2872799100,3cyclictest21021-21cron09:50:012
2872799100,2cyclictest32510-21ssh11:14:552
2872799100,2cyclictest14490-11brltty08:40:262
2872799100,1cyclictest663-21runrttasks09:55:482
2872799100,1cyclictest30727-21snmpd08:35:152
2872799100,1cyclictest23043-21cat09:50:202
2872799100,1cyclictest166432sleep207:50:472
2872799100,1cyclictest12821-21sh10:43:072
2872799100,1cyclictest12761-21ssh11:02:272
2872799100,1cyclictest11860-21sed12:00:152
2872799100,1cyclictest11201-21hddtemp_smartct07:40:152
2872799100,1cyclictest0-21swapper/211:43:392
2872799100,1cyclictest0-21swapper/210:26:192
287279992,6cyclictest30727-21snmpd11:50:512
287279992,6cyclictest30727-21snmpd08:24:572
287279992,6cyclictest19719-21uniq12:05:132
287279991,1cyclictest711-21apt-get11:15:122
287279991,1cyclictest23946-21apt-get08:10:132
287279990,8cyclictest26442-21/usr/sbin/munin08:15:172
287279990,3cyclictest3101-21ssh10:37:012
287279990,3cyclictest22698-21rm09:30:382
287279990,2cyclictest504-21dbus-daemon09:00:002
287279990,2cyclictest4683-21ssh10:57:392
287279990,2cyclictest32191-21switchtime08:25:192
287279990,2cyclictest30893-21latency_hist07:15:012
287279990,2cyclictest18643-21cron09:10:002
287279990,1cyclictest9310-21ssh12:37:322
287279990,1cyclictest8175-21ssh10:00:562
287279990,1cyclictest6706-21ssh11:37:552
287279990,1cyclictest6448-21apt-get10:20:122
287279990,1cyclictest4810-21memory09:20:152
287279990,1cyclictest30377-21ssh10:15:042
287279990,1cyclictest29319-21ssh11:31:472
287279990,1cyclictest16420-21ssh11:05:072
287279990,1cyclictest0-21swapper/209:27:352
287279990,1cyclictest0-21swapper/208:45:002
26977290,0sleep30-21swapper/309:14:483
287309985,3cyclictest20006-21users11:45:203
287309983,4cyclictest50850irq/136-enp4s0-12:00:113
287309983,3cyclictest275-21systemd-journal07:50:163
287309980,7cyclictest26682-21ssh11:10:263
287279981,2cyclictest19102-21vmstat11:25:202
287279980,7cyclictest51250irq/139-enp4s0-11:20:082
287279980,3cyclictest21913-21cut08:05:132
287279980,3cyclictest13403-21grep07:45:142
287279980,2cyclictest27688-21awk12:10:122
287279980,2cyclictest275-21systemd-journal07:30:012
287279980,2cyclictest20551-21awk08:00:172
287279980,2cyclictest16984-21pmu-power10:45:212
287279980,2cyclictest14843-21df09:00:132
287279980,2cyclictest14438-21fschecks_count10:05:152
287279980,2cyclictest10404-21fschecks_count08:50:142
287279980,1cyclictest19051-21sshd07:58:092
287209985,2cyclictest12-21ksoftirqd/009:15:000
17927280,0sleep00-21swapper/010:45:400
11212280,0sleep00-21swapper/012:00:110
9817270,0sleep10-21swapper/110:40:481
287309976,1cyclictest16224-21ssh11:24:303
287309975,1cyclictest34-21ksoftirqd/309:40:003
287309973,3cyclictest275-21systemd-journal10:45:163
287309973,3cyclictest275-21systemd-journal09:57:413
287309973,3cyclictest275-21systemd-journal08:56:183
287309970,1cyclictest8494-21ssh12:36:553
287229976,1cyclictest19054-21sshd07:58:091
287229973,3cyclictest30727-21snmpd12:33:581
287229973,3cyclictest275-21systemd-journal09:39:591
287229973,1cyclictest8535-21turbostat11:19:591
287229970,4cyclictest25924-21apt-get08:15:011
287229970,3cyclictest6989-21idleruntime-cro10:40:001
287229970,1cyclictest26901-21ssh12:28:551
287209974,2cyclictest504-21dbus-daemon09:50:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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