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2026-09-15 - 13:48
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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 Tue Sep 15, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
528023270,6sleep30-21swapper/319:05:193
60342311281,20sleep10-21swapper/119:06:481
62992305276,17sleep20-21swapper/219:09:572
61972269239,20sleep00-21swapper/019:08:400
112212610,1sleep10-21swapper/121:57:491
158542540,1sleep334-21ksoftirqd/322:00:203
122322180,0sleep00-21swapper/022:57:070
300722160,0sleep00-21swapper/020:00:160
254962160,0sleep30-21swapper/300:23:393
254962160,0sleep30-21swapper/300:23:393
233172150,0sleep20-21swapper/222:05:152
240302140,0sleep20-21swapper/222:45:122
229382140,0sleep10-21swapper/123:43:001
216112140,0sleep00-21swapper/021:25:120
639699132,6cyclictest24562-21sh23:05:031
640599103,2cyclictest31255-21cat21:50:153
640599103,2cyclictest14415-21snmpd23:17:073
640599102,3cyclictest17331-21grep20:45:013
640599102,1cyclictest0-21swapper/323:59:113
639699102,4cyclictest8794-21ssh23:15:091
639699102,4cyclictest27179-21awk23:45:171
639699102,3cyclictest23252-21cut19:45:141
639699101,6cyclictest7116-21sh23:14:021
639699101,6cyclictest17480-21ssh22:40:301
639699101,6cyclictest14701-21ssh23:38:031
101412100,0sleep00-21swapper/022:16:390
9088290,0sleep00-21swapper/021:36:450
64059990,3cyclictest275-21systemd-journal21:02:153
64059990,2cyclictest485-21/usr/sbin/munin23:10:093
64019996,2cyclictest14415-21snmpd21:54:322
63969995,3cyclictest0-21swapper/122:55:021
63969993,5cyclictest0-21swapper/120:45:111
63969992,5cyclictest5803-21ssh22:34:161
63969992,5cyclictest11670-21ssh00:35:031
63969992,3cyclictest6271-21irqstats21:35:141
63969992,3cyclictest28742-21ntp_kernel_pll_00:25:151
63969992,3cyclictest24077-21sh21:26:001
63969992,3cyclictest17760-21rm21:42:051
63969992,3cyclictest11583-21ssh21:19:071
63969992,2cyclictest25461-21ssh21:46:421
63969991,6cyclictest6150-21sh00:30:591
63969991,6cyclictest2486-21ssh23:50:131
63969991,6cyclictest15610-21ssh00:17:251
63969991,5cyclictest6696-21ssh22:54:271
63969991,5cyclictest21084-21ssh23:02:321
63969991,5cyclictest15182-21ssh22:00:161
63969991,3cyclictest6562-21sh23:33:081
63969991,3cyclictest13198-21ssh21:20:101
63969991,2cyclictest28344-21diskmemload22:10:131
24115290,0sleep30-21swapper/300:03:213
8629280,0sleep30-21swapper/322:35:203
63969984,3cyclictest29243-21latency_hist20:00:011
63969983,4cyclictest31474-21latency_hist20:05:011
63969983,4cyclictest27494-21rm22:46:531
63969983,4cyclictest23672-21tune2fs22:25:131
63969983,4cyclictest14432-21tune2fs19:25:141
63969983,4cyclictest11448-21dump-pmu-power19:20:011
63969982,2cyclictest2835-21cat00:10:131
63969982,2cyclictest24789-21sh00:23:061
63969982,2cyclictest24789-21sh00:23:061
63969982,2cyclictest1179-21rm21:51:231
63969981,5cyclictest7107-21ssh22:35:061
63969981,5cyclictest32535-21sh21:11:381
63969981,5cyclictest30478-21ssh21:30:151
63969981,5cyclictest25495-21ssh22:06:081
63969981,5cyclictest10590-21ssh22:16:591
63969981,5cyclictest0-21swapper/123:55:191
63969981,4cyclictest30867-21runrttasks23:28:141
63969981,3cyclictest28541-21ssh00:05:231
63969981,3cyclictest28344-21diskmemload22:21:321
63969981,2cyclictest25215-21ssh00:04:121
63969980,3cyclictest28344-21diskmemload23:20:351
63929980,7cyclictest0-21swapper/023:03:490
64059973,3cyclictest275-21systemd-journal23:10:003
64059970,6cyclictest24634-21cat22:25:193
64059970,3cyclictest23697-21/usr/sbin/munin22:45:133
64059970,2cyclictest275-21systemd-journal21:37:053
64019973,3cyclictest275-21systemd-journal22:43:082
64019973,3cyclictest275-21systemd-journal22:20:012
64019973,3cyclictest275-21systemd-journal21:00:342
64019973,3cyclictest14415-21snmpd21:42:582
64019971,3cyclictest30954-21munin-run22:30:012
63969975,2cyclictest8545-21apt-get20:25:021
63969974,3cyclictest0-21swapper/120:30:121
63969974,2cyclictest275-21systemd-journal20:15:011
63969974,2cyclictest19838-21sed19:35:181
63969973,3cyclictest6532-21expr20:20:131
63969973,3cyclictest31841-21/usr/sbin/munin20:05:131
63969973,3cyclictest26967-21smartctl21:05:131
63969973,3cyclictest25456-21fschecks_count19:50:141
63969973,3cyclictest24541-21diskstats21:00:151
63969973,3cyclictest22464-21grep20:55:131
63969973,3cyclictest21817-21/usr/sbin/munin19:40:211
63969973,3cyclictest21301-21chrt20:50:541
63969973,3cyclictest13864-21cat20:35:161
63969973,3cyclictest11723-21cpu19:20:131
63969973,3cyclictest0-21swapper/120:15:121
63969973,3cyclictest0-21swapper/119:30:111
63929973,3cyclictest504-21dbus-daemon22:13:070
63929973,3cyclictest28290-21sshd21:09:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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