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2025-11-07 - 21:33
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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 20 highest latencies:
System rackcslot3.osadl.org (updated Thu Nov 06, 2025 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81790rcu_preempt754-21diskmemload09:31:151
81780rcu_preempt0-21swapper/010:59:020
81770rcu_preempt19-21ksoftirqd/109:52:511
81750rcu_preempt1911-21cpuspeed_turbos07:11:021
81750rcu_preempt13082-21latency_hist07:55:471
81740rcu_preempt6209-21df_inode10:21:031
81740rcu_preempt0-21swapper/011:28:300
81720rcu_preempt6157-21ntpq12:16:101
81720rcu_preempt11452-21sh10:30:480
81700rcu_preempt2224-21snmpd09:30:191
81700rcu_preempt17465-21diskstats10:41:051
81700rcu_preempt0-21swapper/112:01:121
81700rcu_preempt0-21swapper/007:16:140
81690rcu_preempt4100-21ssh09:21:001
81690rcu_preempt0-21swapper/112:36:141
81690rcu_preempt0-21swapper/111:34:061
81690rcu_preempt0-21swapper/111:00:141
81690rcu_preempt0-21swapper/110:32:541
81690rcu_preempt0-21swapper/110:19:051
81690rcu_preempt0-21swapper/110:08:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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