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2021-06-17 - 19:26

Intel(R) Atom(TM) CPU Z530 @ 1.60GHz, Linux 3.12.61-rt81 (Profile)

Latency plot of system in rack #1, slot #8
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rack1slot8.osadl.org (updated Thu Jun 17, 2021 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1495099525452,49cyclictest0-21swapper/007:10:040
14950995234,505cyclictest0-21swapper/007:26:190
1495199513432,48cyclictest0-21swapper/107:10:051
14951994854,441cyclictest0-21swapper/107:26:191
144692243213,22sleep10-21swapper/107:05:321
1495099763,52cyclictest4716-21df_inode11:20:140
14950997320,30cyclictest85350irq/46-eth0-tx-09:53:180
1495099732,65cyclictest9120-21kworker/0:212:30:150
1495099732,65cyclictest32158-21ssh10:19:300
1495099722,63cyclictest22359-21diskmemload11:07:320
1495099722,63cyclictest10677-21munin-node11:30:340
14950997214,35cyclictest23093-21ssh10:04:430
1495099713,53cyclictest19351-21ssh11:44:280
1495099713,44cyclictest1370-21ssh09:28:490
1495099712,63cyclictest11440-21runrttasks12:24:290
1495099712,62cyclictest5482-21runrttasks10:28:160
1495099712,44cyclictest20135-21idleruntime-cro10:00:000
1495199703,59cyclictest14398-21munin-node08:45:181
1495099704,60cyclictest0-21swapper/011:02:070
1495099702,62cyclictest1233-21ksmtuned07:30:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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