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2024-07-16 - 15:39

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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  Phytec
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Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

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 rackbslot5s.osadl.org (updated Mon Jul 15, 2024 12:45:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1579160995852,4cyclictest1578360-21kworker/u8:0+events_unbound07:40:582
1579161995746,7cyclictest1642183-21grep10:05:413
1579161995746,7cyclictest1642183-21grep10:05:413
1579160995650,4cyclictest1685195-21kworker/u8:0+events_unbound12:11:342
1579160995650,4cyclictest1685195-21kworker/u8:0+events_unbound12:11:342
1579160995144,5cyclictest1620371-21kworker/u8:2+events_unbound09:06:152
1579160995144,5cyclictest1620371-21kworker/u8:2+events_unbound09:06:142
1579160994844,2cyclictest1582761-21kworker/u8:2+events_unbound07:35:572
1579158994841,5cyclictest1618367-21kworker/u8:0+events_unbound09:01:140
1579158994841,5cyclictest1618367-21kworker/u8:0+events_unbound09:01:130
1579159994639,5cyclictest1592340-21kworker/u8:1+events_unbound07:45:571
1579161994517,9cyclictest1651281-21sed10:35:023
1579161994517,9cyclictest1651281-21sed10:35:023
1579161994516,10cyclictest1670680-21memory11:30:203
1579161994516,10cyclictest1590470-21sed07:35:383
1579161994512,11cyclictest1676202-21ls11:45:323
1579161994436,5cyclictest1587791-21unixbench_multi07:30:343
1579161994436,5cyclictest1587791-21unixbench_multi07:30:343
1579161994433,6cyclictest1623159-21grep09:10:383
1579161994418,9cyclictest1678756-21/usr/sbin/munin11:55:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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