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2025-10-03 - 07:51
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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 Fri Oct 03, 2025 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81760rcu_preempt3450-21tr22:09:321
81750rcu_preempt26796-21/usr/sbin/munin23:49:381
81720rcu_preempt1607-21processes20:59:451
81700rcu_preempt28391-21df_abs22:54:321
81700rcu_preempt24530-21sh21:49:311
81700rcu_preempt24530-21sh21:49:311
81700rcu_preempt20504-21ssh21:40:461
81700rcu_preempt0-21swapper/122:40:321
81690rcu_preempt5047-21apt-get00:09:341
81690rcu_preempt0-21swapper/119:09:311
81690rcu_preempt0-21swapper/100:29:341
81680rcu_preempt8915-1kworker/0:1H00:33:250
81680rcu_preempt2596-21ssh22:07:441
81680rcu_preempt0-21swapper/123:42:541
81680rcu_preempt0-21swapper/123:01:011
81680rcu_preempt0-21swapper/122:16:421
81680rcu_preempt0-21swapper/121:18:101
81670rcu_preempt22435-21ls21:44:411
81670rcu_preempt12301-21munin-run23:24:181
81670rcu_preempt0-21swapper/123:48:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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