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2026-04-25 - 12:57
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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 Sat Apr 25, 2026 00:44:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
71580rcu_preempt0-21swapper/121:47:581
71580rcu_preempt0-21swapper/121:47:581
71550rcu_preempt0-21swapper/322:10:473
71550rcu_preempt0-21swapper/322:10:473
71550rcu_preempt0-21swapper/123:52:471
71550rcu_preempt0-21swapper/123:52:471
71550rcu_preempt0-21swapper/123:52:471
26143994725cyclictest7568-21munin-run20:02:312
26143994725cyclictest7568-21munin-run20:02:312
2614399471cyclictest4438-21/usr/sbin/munin23:27:512
2614399471cyclictest4438-21/usr/sbin/munin23:27:512
26143994511cyclictest28833-21sendmail-msp19:22:572
26143994511cyclictest28833-21sendmail-msp19:22:572
26143994511cyclictest28833-21sendmail-msp19:22:572
71440rcu_preempt0-21swapper/021:08:560
71440rcu_preempt0-21swapper/021:08:560
71440rcu_preempt0-21swapper/021:08:560
71440rcu_preempt0-21swapper/000:12:420
71440rcu_preempt0-21swapper/000:12:420
2614399443cyclictest0-21swapper/219:32:302
2614399443cyclictest0-21swapper/219:32:302
2614399443cyclictest0-21swapper/200:07:472
2614399443cyclictest0-21swapper/200:07:472
2614399436cyclictest4918-21ssh21:30:062
2614399436cyclictest4918-21ssh21:30:062
2614399436cyclictest4918-21ssh21:30:062
2614399433cyclictest0-21swapper/223:22:412
2614399433cyclictest0-21swapper/223:22:412
2614399433cyclictest0-21swapper/223:22:412
2614399432cyclictest10156-21df_abs23:37:452
2614399432cyclictest10156-21df_abs23:37:452
2614399431cyclictest1959-21runrttasks22:47:052
2614399431cyclictest1959-21runrttasks22:47:052
2614399431cyclictest154732chrt21:48:542
2614399431cyclictest154732chrt21:48:542
71420rcu_preempt14054-21apt21:47:310
71420rcu_preempt14054-21apt21:47:310
2614399424cyclictest0-21swapper/200:17:442
2614399424cyclictest0-21swapper/200:17:442
2614399423cyclictest2178-1kworker/2:4H22:29:082
2614399423cyclictest2178-1kworker/2:4H22:29:082
2614399423cyclictest0-21swapper/219:52:552
2614399423cyclictest0-21swapper/219:52:552
2614399423cyclictest0-21swapper/219:52:552
2614399423cyclictest0-21swapper/200:35:562
2614399423cyclictest0-21swapper/200:35:562
26143994221cyclictest0-21swapper/220:12:422
26143994221cyclictest0-21swapper/220:12:422
26143994221cyclictest0-21swapper/220:12:422
26143994220cyclictest18600-21meminfo23:52:552
26143994220cyclictest18600-21meminfo23:52:552
26143994220cyclictest18600-21meminfo23:52:552
26143994217cyclictest20859-21mailstats20:47:582
26143994217cyclictest20859-21mailstats20:47:582
71410rcu_preempt25803-21ssh22:07:581
71410rcu_preempt25803-21ssh22:07:581
46050410irq/122-QManpo0-210
46050410irq/122-QManpo0-210
46050410irq/122-QManpo0-210
2614399418cyclictest24704-21ssh22:06:392
2614399418cyclictest24704-21ssh22:06:392
2614399418cyclictest24704-21ssh22:06:392
2614399414cyclictest0-21swapper/219:42:572
2614399414cyclictest0-21swapper/219:42:572
2614399414cyclictest0-21swapper/219:42:572
2614399413cyclictest0-21swapper/220:32:362
2614399413cyclictest0-21swapper/220:32:362
2614399412cyclictest20952-21apt-get23:57:432
2614399412cyclictest20952-21apt-get23:57:432
2614399412cyclictest20952-21apt-get23:57:432
26143994120cyclictest0-21swapper/222:32:592
26143994120cyclictest0-21swapper/222:32:592
2614399411cyclictest29390-21/usr/sbin/munin23:12:582
2614399411cyclictest29390-21/usr/sbin/munin23:12:582
26143994119cyclictest0-21swapper/222:50:252
26143994119cyclictest0-21swapper/222:50:252
26143994119cyclictest0-21swapper/222:50:252
26143994118cyclictest26155-21memory21:07:502
26143994118cyclictest26155-21memory21:07:502
26143994118cyclictest26155-21memory21:07:502
26143994116cyclictest17440-21apt-get22:52:412
26143994116cyclictest17440-21apt-get22:52:412
26143994115cyclictest24223-21sendmail-msp21:05:032
26143994115cyclictest24223-21sendmail-msp21:05:032
71400rcu_preempt18499-21ssh23:52:540
71400rcu_preempt18499-21ssh23:52:540
71400rcu_preempt18499-21ssh23:52:540
71400rcu_preempt0-21swapper/223:47:212
71400rcu_preempt0-21swapper/223:47:212
71400rcu_preempt0-21swapper/021:47:580
71400rcu_preempt0-21swapper/021:47:580
46050400irq/122-QManpo530-210
46050400irq/122-QManpo530-210
46050400irq/122-QManpo530-210
2614399404cyclictest0-21swapper/222:25:462
2614399404cyclictest0-21swapper/222:25:462
2614399404cyclictest0-21swapper/222:25:462
2614399404cyclictest0-21swapper/222:00:002
2614399404cyclictest0-21swapper/222:00:002
2614399404cyclictest0-21swapper/222:00:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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