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2023-06-02 - 20:50

x86 AMD G-T48L @1400 MHz, Linux 4.4.4-rt11 (Profile)

Latency plot of system in rack #c, slot #3
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
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 Jun 02, 2023 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81760rcu_preempt25197-21needreboot09:35:561
81720rcu_preempt20027-21timerandwakeup07:06:001
81700rcu_preempt0-21swapper/011:11:020
81690rcu_preempt0-21swapper/109:44:541
81690rcu_preempt0-21swapper/009:30:270
81690rcu_preempt0-21swapper/007:45:570
81670rcu_preempt0-21swapper/111:51:001
81660rcu_preempt21856-21ssh09:24:221
81660rcu_preempt18410-21if_eth111:15:551
81650rcu_preempt7344-21sshd12:38:550
81650rcu_preempt2198-21if_wlan008:05:521
81650rcu_preempt0-21swapper/112:38:421
81640rcu_preempt31879-21mailstats10:00:570
81640rcu_preempt0-21swapper/110:50:531
81640rcu_preempt0-21swapper/110:06:161
81640rcu_preempt0-21swapper/011:50:370
81630rcu_preempt28858-21if_eth109:50:501
81630rcu_preempt0-21swapper/111:58:551
81630rcu_preempt0-21swapper/111:25:271
81630rcu_preempt0-21swapper/111:05:471
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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