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2019-07-17 - 00:38

ARMv7 Processor rev 4 (v7l), Linux 4.6.5-rt10-v7 (Profile)

Latency plot of system in rack #b, 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
The worst-case latency is about 1.22 times higher under extreme CPU load.
Results of all systems under extreme CPU load are combined on this summary graph.
The worst-case latency is about 1.15 times higher under graphics load.
Results of all systems with accelerated graphics are combined on this summary graph.
Characteristics of the 20 highest latencies:
System rackbslot3.osadl.org (updated Tue Jul 16, 2019 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22489991227,32cyclictest0-21swapper/212:15:072
22489991227,32cyclictest0-21swapper/212:15:072
224899912021,34cyclictest8857-21gpgv11:35:022
224899912021,34cyclictest8857-21gpgv11:35:022
224879912041,49cyclictest3-21ksoftirqd/011:50:010
224879911922,82cyclictest3-21ksoftirqd/008:40:020
224879911922,82cyclictest3-21ksoftirqd/008:40:020
224899911821,40cyclictest0-21swapper/212:05:082
224879911572,6cyclictest8859-21apt-get11:35:020
224879911572,6cyclictest8859-21apt-get11:35:020
22487991151,93cyclictest6194-21tail08:00:160
224879911231,52cyclictest3-21ksoftirqd/008:20:230
224879911231,52cyclictest3-21ksoftirqd/008:20:230
22487991122,77cyclictest81rcu_preempt10:50:140
224879911145,23cyclictest0-21swapper/011:40:080
224879911025,70cyclictest3-21ksoftirqd/010:20:050
224879911024,72cyclictest3-21ksoftirqd/009:25:050
1651991100,10rtkit-daemon1650-21rtkit-daemon09:55:090
224899910914,6cyclictest27019-21latency_hist07:25:022
224899910914,6cyclictest27019-21latency_hist07:25:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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