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2026-04-04 - 05:53
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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 rackcslot3.osadl.org (updated Sat Apr 04, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81810rcu_preempt21294-21latency21:20:221
81800rcu_preempt19693-21munin-run19:15:011
81770rcu_preempt19-21ksoftirqd/123:05:091
81770rcu_preempt19-21ksoftirqd/100:42:061
81760rcu_preempt19-21ksoftirqd/121:51:161
81760rcu_preempt19-21ksoftirqd/121:48:461
81720rcu_preempt0-21swapper/123:43:541
81710rcu_preempt24758-1kworker/1:1H22:04:431
81710rcu_preempt17701-21diskmemload21:15:550
81710rcu_preempt0-21swapper/022:06:100
81710rcu_preempt0-21swapper/021:43:310
81710rcu_preempt0-21swapper/019:30:020
81710rcu_preempt0-21swapper/019:25:210
81700rcu_preempt0-21swapper/019:20:140
81690rcu_preempt20335-21ssh23:22:230
81690rcu_preempt0-21swapper/021:32:020
81680rcu_preempt9723-21sh23:01:280
81670rcu_preempt19-21ksoftirqd/123:45:541
81670rcu_preempt17940-21ssh23:18:110
89850660irq/17-ehci_hcd181ktimersoftd/123:02:381
81660rcu_preempt0-21swapper/100:30:261
81660rcu_preempt0-21swapper/023:11:380
81660rcu_preempt0-21swapper/022:31:570
81660rcu_preempt0-21swapper/000:34:510
81640rcu_preempt31794-21ssh23:45:160
81640rcu_preempt0-21swapper/023:42:380
81630rcu_preempt30001-21/usr/sbin/munin19:55:210
81630rcu_preempt12636-21ssh23:07:340
81630rcu_preempt0-21swapper/021:23:440
81630rcu_preempt0-21swapper/000:15:150
147850630irq/30-eth0-tx-41ktimersoftd/000:23:050
81620rcu_preempt0-21swapper/022:45:130
81620rcu_preempt0-21swapper/020:20:200
81610rcu_preempt0-21swapper/023:35:150
81610rcu_preempt0-21swapper/021:55:270
81610rcu_preempt0-21swapper/021:55:270
81600rcu_preempt29870-21/usr/sbin/munin19:55:010
81600rcu_preempt18216-21ssh23:19:101
81600rcu_preempt1451-21kworker/0:019:10:210
81600rcu_preempt0-21swapper/122:36:461
81600rcu_preempt0-21swapper/121:34:401
81600rcu_preempt0-21swapper/119:40:211
81600rcu_preempt0-21swapper/100:02:321
81600rcu_preempt0-21swapper/020:30:190
81600rcu_preempt0-21swapper/000:40:220
81590rcu_preempt8047-21ssh21:55:291
81590rcu_preempt8047-21ssh21:55:291
81590rcu_preempt6573-21ssh21:54:370
81590rcu_preempt5049-21ssh22:53:221
81590rcu_preempt26318-21ssh00:37:311
81590rcu_preempt25684-21ssh21:29:120
81590rcu_preempt22250-21ssh22:24:581
81590rcu_preempt20247-21ssh21:19:131
81590rcu_preempt12201-21ssh00:10:061
81590rcu_preempt10703-21ssh22:00:420
81590rcu_preempt0-21swapper/123:50:441
81590rcu_preempt0-21swapper/123:25:181
81590rcu_preempt0-21swapper/123:13:391
81590rcu_preempt0-21swapper/122:55:271
81590rcu_preempt0-21swapper/122:44:211
81590rcu_preempt0-21swapper/122:30:221
81590rcu_preempt0-21swapper/122:11:261
81590rcu_preempt0-21swapper/120:35:181
81590rcu_preempt0-21swapper/120:15:081
81590rcu_preempt0-21swapper/119:45:261
81590rcu_preempt0-21swapper/100:25:171
81590rcu_preempt0-21swapper/100:07:171
81590rcu_preempt0-21swapper/022:50:270
81590rcu_preempt0-21swapper/000:38:330
81580rcu_preempt22569-21ssh23:26:180
81580rcu_preempt18073-21ssh00:21:031
81580rcu_preempt16443-21latency_hist21:10:020
81580rcu_preempt0-21swapper/123:37:501
81580rcu_preempt0-21swapper/123:33:121
81580rcu_preempt0-21swapper/122:05:121
81580rcu_preempt0-21swapper/121:40:441
81580rcu_preempt0-21swapper/121:05:211
81580rcu_preempt0-21swapper/120:44:471
81580rcu_preempt0-21swapper/120:30:231
81580rcu_preempt0-21swapper/120:00:171
81580rcu_preempt0-21swapper/119:35:211
81580rcu_preempt0-21swapper/023:33:270
81580rcu_preempt0-21swapper/000:07:030
81570rcu_preempt23865-21ssh22:26:171
81570rcu_preempt2232-21ssh22:47:141
81570rcu_preempt2021-21ssh23:50:160
81570rcu_preempt14874-21df_abs22:10:160
81570rcu_preempt13294-21timerandwakeup00:10:280
81570rcu_preempt0-21swapper/123:56:321
81570rcu_preempt0-21swapper/122:15:371
81570rcu_preempt0-21swapper/121:27:171
81570rcu_preempt0-21swapper/121:11:251
81570rcu_preempt0-21swapper/120:05:181
81570rcu_preempt0-21swapper/119:15:181
81570rcu_preempt0-21swapper/100:16:371
81570rcu_preempt0-21swapper/022:59:180
81570rcu_preempt0-21swapper/020:35:190
81560rcu_preempt22747-21diskstats22:25:170
81560rcu_preempt1583-1kworker/0:0H21:45:430
81560rcu_preempt0-21swapper/123:22:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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