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2026-05-09 - 05:17
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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 May 09, 2026 00:44:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1800021460chrt46250irq/120-QMan10:48:551
1800021460chrt46250irq/120-QMan10:48:551
71670rcu_preempt0-21swapper/121:15:381
71670rcu_preempt0-21swapper/121:15:381
71570rcu_preempt0-21swapper/200:07:552
71570rcu_preempt0-21swapper/200:07:552
71570rcu_preempt0-21swapper/200:07:552
29700994920cyclictest1523-21/usr/sbin/munin22:18:041
29700994920cyclictest1523-21/usr/sbin/munin22:18:041
29700994920cyclictest1523-21/usr/sbin/munin22:18:041
29700994917cyclictest26053-21sendmail-msp23:03:201
29700994917cyclictest26053-21sendmail-msp23:03:201
71480rcu_preempt0-21swapper/123:11:161
71480rcu_preempt0-21swapper/123:11:161
71470rcu_preempt4583-21sendmail-msp23:33:351
71470rcu_preempt4583-21sendmail-msp23:33:351
71460rcu_preempt27763-21munin-run21:02:462
71460rcu_preempt27763-21munin-run21:02:462
71460rcu_preempt20372-21sh23:51:391
71460rcu_preempt20372-21sh23:51:391
71460rcu_preempt20372-21sh23:51:391
71460rcu_preempt0-21swapper/000:32:570
71460rcu_preempt0-21swapper/000:32:570
71460rcu_preempt0-21swapper/000:32:570
71450rcu_preempt19090-1kworker/1:0H21:52:161
71450rcu_preempt19090-1kworker/1:0H21:52:161
71450rcu_preempt19090-1kworker/1:0H21:52:161
71450rcu_preempt0-21swapper/122:04:091
71450rcu_preempt0-21swapper/122:04:091
46050450irq/122-QManpo25371-210
46050450irq/122-QManpo25371-210
29700994518cyclictest32357-21sendmail-msp19:23:241
29700994518cyclictest32357-21sendmail-msp19:23:241
29700994518cyclictest32357-21sendmail-msp19:23:241
29700994516cyclictest1474-21apt-get19:27:561
29700994516cyclictest1474-21apt-get19:27:561
71440rcu_preempt0-21swapper/100:29:241
71440rcu_preempt0-21swapper/100:29:241
71440rcu_preempt0-21swapper/100:29:241
71440rcu_preempt0-21swapper/023:09:220
71440rcu_preempt0-21swapper/023:09:220
71440rcu_preempt0-21swapper/019:12:500
71440rcu_preempt0-21swapper/019:12:500
29700994421cyclictest5764-21ssh23:23:231
29700994421cyclictest5764-21ssh23:23:231
29700994421cyclictest5764-21ssh23:23:231
71430rcu_preempt21709-21sh21:54:281
71430rcu_preempt21709-21sh21:54:281
71430rcu_preempt21709-21sh21:54:281
71430rcu_preempt19338-21runrttasks23:48:332
71430rcu_preempt19338-21runrttasks23:48:332
71430rcu_preempt19338-21runrttasks23:48:332
29700994322cyclictest6843-21ssh22:27:331
29700994322cyclictest6843-21ssh22:27:331
29700994322cyclictest6843-21ssh22:27:331
29700994322cyclictest1959-21runrttasks19:54:041
29700994322cyclictest1959-21runrttasks19:54:041
29700994321cyclictest8308-21wc19:52:461
29700994321cyclictest8308-21wc19:52:461
29700994321cyclictest8308-21wc19:52:461
29700994321cyclictest24256-21/usr/sbin/munin23:58:101
29700994321cyclictest24256-21/usr/sbin/munin23:58:101
29700994316cyclictest31085-21/usr/sbin/munin19:18:101
29700994316cyclictest31085-21/usr/sbin/munin19:18:101
29700994316cyclictest31085-21/usr/sbin/munin19:18:101
71420rcu_preempt27202-21sh19:09:371
71420rcu_preempt27202-21sh19:09:371
71420rcu_preempt26339-21sendmail-msp00:11:371
71420rcu_preempt26339-21sendmail-msp00:11:371
71420rcu_preempt26339-21sendmail-msp00:11:371
71420rcu_preempt12113-21diskmemload00:35:551
71420rcu_preempt12113-21diskmemload00:35:551
71420rcu_preempt12113-21diskmemload00:35:551
71420rcu_preempt0-21swapper/122:58:071
71420rcu_preempt0-21swapper/122:58:071
71420rcu_preempt0-21swapper/122:08:121
71420rcu_preempt0-21swapper/122:08:121
71420rcu_preempt0-21swapper/122:08:121
71420rcu_preempt0-21swapper/121:17:581
71420rcu_preempt0-21swapper/121:17:581
71420rcu_preempt0-21swapper/020:08:020
71420rcu_preempt0-21swapper/020:08:020
71420rcu_preempt0-21swapper/000:03:120
71420rcu_preempt0-21swapper/000:03:120
71420rcu_preempt0-21swapper/000:03:120
29700994224cyclictest23002-21ssh22:57:201
29700994224cyclictest23002-21ssh22:57:201
29700994223cyclictest14840-21latency_hist21:42:511
29700994220cyclictest8904-21ssh22:30:491
29700994220cyclictest8904-21ssh22:30:491
29700994220cyclictest8904-21ssh22:30:491
29700994220cyclictest4136-21/usr/sbin/munin21:23:131
29700994220cyclictest4136-21/usr/sbin/munin21:23:131
29700994220cyclictest12438-21apt-get22:37:571
29700994220cyclictest12438-21apt-get22:37:571
29700994219cyclictest9742-21apt-get22:32:581
29700994219cyclictest9742-21apt-get22:32:581
71410rcu_preempt22197-21sendmail-msp20:42:511
71410rcu_preempt22197-21sendmail-msp20:42:511
71410rcu_preempt1900-21munin-node23:37:561
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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