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2025-12-05 - 11:36
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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 rack2slot7.osadl.org (updated Fri Dec 05, 2025 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1911346993913,6cyclictest171rcu_preempt23:43:121
191134599383,17cyclictest1966758-21latency_hist21:31:110
1911347993714,7cyclictest171rcu_preempt21:51:102
191134799361,10cyclictest11050irq/107-eth%d21:52:312
191134599363,24cyclictest1981251-21sendmail-msp21:51:490
1911345993521,7cyclictest2090293-21sendmail-msp23:53:510
1911347993410,5cyclictest171rcu_preempt21:38:102
1911347993410,4cyclictest1959018-21ntpq21:23:122
191134599348,21cyclictest2079071-21ntpq23:33:170
1911347993324,5cyclictest0-21swapper/222:48:132
191134599333,29cyclictest0-21swapper/023:38:130
191134699321,19cyclictest28-21ksoftirqd/100:31:161
191134599325,2cyclictest1967673-21ssh21:32:320
1911347993112,6cyclictest171rcu_preempt00:28:282
1911345993110,5cyclictest1981632-21ssh21:46:250
191134599310,9cyclictest1992268-21/usr/sbin/munin21:58:070
191134699305,18cyclictest1964177-21/usr/sbin/munin21:28:171
1911346993010,1cyclictest11050irq/107-eth%d22:48:131
191134599301,23cyclictest0-21swapper/021:26:100
191134699291,6cyclictest0-21swapper/122:58:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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