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2026-04-13 - 11:30
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 rack4slot4.osadl.org (updated Mon Apr 13, 2026 00:44:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
71730rcu_preempt0-21swapper/322:06:213
71730rcu_preempt0-21swapper/322:06:213
71730rcu_preempt0-21swapper/322:06:213
46050540irq/122-QManpo654-2110:48:550
46050540irq/122-QManpo654-2110:48:550
46450490irq/118-QManpo404-2110:48:552
46450490irq/118-QManpo404-2110:48:552
1835994826cyclictest3059-21irqstats00:07:380
1835994826cyclictest3059-21irqstats00:07:380
1835994826cyclictest3059-21irqstats00:07:380
1835994725cyclictest19154-21sendmail_mailqu23:37:440
1835994725cyclictest19154-21sendmail_mailqu23:37:440
1835994725cyclictest19154-21sendmail_mailqu23:37:440
1835994717cyclictest0-21swapper/020:02:410
1835994717cyclictest0-21swapper/020:02:410
1835994717cyclictest0-21swapper/020:02:410
71460rcu_preempt18979-21runrttasks22:39:080
71460rcu_preempt18979-21runrttasks22:39:080
71460rcu_preempt12705-21sh00:24:382
71460rcu_preempt12705-21sh00:24:382
71460rcu_preempt12705-21sh00:24:382
71460rcu_preempt0-21swapper/022:52:220
71460rcu_preempt0-21swapper/022:52:220
71460rcu_preempt0-21swapper/022:52:220
1835994626cyclictest17450-21irqstats20:07:360
1835994626cyclictest17450-21irqstats20:07:360
1835994620cyclictest0-21swapper/022:22:180
1835994620cyclictest0-21swapper/022:22:180
1835994616cyclictest0-21swapper/022:09:260
1835994616cyclictest0-21swapper/022:09:260
1835994616cyclictest0-21swapper/022:09:260
1835994616cyclictest0-21swapper/021:16:530
1835994616cyclictest0-21swapper/021:16:530
71450rcu_preempt0-21swapper/021:02:470
71450rcu_preempt0-21swapper/021:02:470
71450rcu_preempt0-21swapper/021:02:470
1835994523cyclictest31736-21df_inode23:02:330
1835994523cyclictest31736-21df_inode23:02:330
1835994523cyclictest31736-21df_inode23:02:330
1835994523cyclictest22739-21apt-get20:27:290
1835994523cyclictest22739-21apt-get20:27:290
1835994523cyclictest14389-21cut19:57:290
1835994523cyclictest14389-21cut19:57:290
1835994523cyclictest14389-21cut19:57:290
1835994523cyclictest10047-21munin-run23:22:180
1835994523cyclictest10047-21munin-run23:22:180
1835994523cyclictest10047-21munin-run23:22:180
1835994523cyclictest0-21swapper/023:57:470
1835994523cyclictest0-21swapper/023:57:470
1835994517cyclictest13072-21ssh23:27:300
1835994517cyclictest13072-21ssh23:27:300
71440rcu_preempt0-21swapper/322:23:363
71440rcu_preempt0-21swapper/322:23:363
1835994425cyclictest9640-21irqstats22:22:390
1835994425cyclictest9640-21irqstats22:22:390
1835994424cyclictest22377-21ssh22:45:520
1835994424cyclictest22377-21ssh22:45:520
1835994424cyclictest11134-21awk23:22:480
1835994424cyclictest11134-21awk23:22:480
1835994424cyclictest11134-21awk23:22:480
1835994423cyclictest30787-21ssh22:02:200
1835994423cyclictest30787-21ssh22:02:200
1835994423cyclictest20154-21sed20:17:330
1835994423cyclictest20154-21sed20:17:330
1835994423cyclictest20154-21sed20:17:330
1835994422cyclictest3931-21ssh23:11:210
1835994422cyclictest3931-21ssh23:11:210
1835994421cyclictest0-21swapper/023:48:550
1835994421cyclictest0-21swapper/023:48:550
1835994421cyclictest0-21swapper/020:32:320
1835994421cyclictest0-21swapper/020:32:320
71430rcu_preempt22432-1kworker/0:0H23:43:470
71430rcu_preempt22432-1kworker/0:0H23:43:470
71430rcu_preempt22432-1kworker/0:0H23:43:470
71430rcu_preempt22432-1kworker/0:0H23:43:470
71430rcu_preempt0-21swapper/321:50:543
71430rcu_preempt0-21swapper/321:50:543
71430rcu_preempt0-21swapper/223:03:592
71430rcu_preempt0-21swapper/223:03:592
71430rcu_preempt0-21swapper/223:03:592
71430rcu_preempt0-21swapper/022:04:340
71430rcu_preempt0-21swapper/022:04:340
71430rcu_preempt0-21swapper/022:04:340
1835994327cyclictest11373-21apt-get21:27:280
1835994327cyclictest11373-21apt-get21:27:280
1835994326cyclictest1959-21runrttasks21:21:290
1835994326cyclictest1959-21runrttasks21:21:290
1835994323cyclictest12391-21awk19:47:470
1835994323cyclictest12391-21awk19:47:470
1835994323cyclictest11483-21irqstats00:22:390
1835994323cyclictest11483-21irqstats00:22:390
1835994323cyclictest11483-21irqstats00:22:390
1835994322cyclictest1546-21/usr/sbin/munin21:07:310
1835994322cyclictest1546-21/usr/sbin/munin21:07:310
1835994321cyclictest0-21swapper/021:45:540
1835994321cyclictest0-21swapper/021:45:540
1835994319cyclictest0-21swapper/021:49:170
1835994319cyclictest0-21swapper/021:49:170
71420rcu_preempt19769-21apt-get20:17:382
71420rcu_preempt19769-21apt-get20:17:382
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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