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2022-01-23 - 10:44

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Latency plot of system in rack #7, slot #2
Note that at least one system runs a non-RT kernel (x scale expanded to 2000 µs).
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line:
Characteristics of the 10 highest latencies:
System (updated Wed Apr 24, 2019 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1010121254sleep010103-21df07:41:550
1131721064sleep011367-21ssh11:27:290
326349910257cyclictest15549-21ntp_states07:57:420
326349910057cyclictest1-21init09:17:060
326349910056cyclictest28980-21memory12:02:170
326349910055cyclictest8919-21ntp_states07:37:120
326349910055cyclictest8421-21diskstats11:22:100
326349910052cyclictest23249-21diskstats08:21:530
326349910013cyclictest17613-21ssh10:36:440
32634999953cyclictest11933-21ssh09:21:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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