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2024-04-19 - 23:07

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #7

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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Click here to display the system's profile data or here to proceed to next system.
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.
Unexpectedly long latencies may be caused by SMIs
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 50 highest latencies:
System rack7slot7s.osadl.org (updated Fri Apr 19, 2024 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8156210374,10sleep10-21swapper/107:08:191
8153210390,9sleep30-21swapper/307:08:183
820828363,16sleep00-21swapper/007:08:580
731227666,6sleep20-21swapper/207:05:242
837899250,25cyclictest0-21swapper/212:00:442
837899250,25cyclictest0-21swapper/211:15:592
837899250,24cyclictest0-21swapper/209:00:142
8378992421,2cyclictest10594-21kworker/u8:210:35:302
837899240,23cyclictest0-21swapper/209:18:032
837899230,23cyclictest0-21swapper/212:06:312
8378992220,2cyclictest32-21ksoftirqd/212:29:112
8378992220,2cyclictest0-21swapper/210:08:022
8382992113,7cyclictest1584-21diskmemload10:45:133
838299210,1cyclictest0-21swapper/311:16:453
8378992120,1cyclictest0-21swapper/207:35:152
837899210,21cyclictest0-21swapper/210:45:092
837899210,20cyclictest0-21swapper/210:23:162
836899210,21cyclictest0-21swapper/011:21:410
8382992013,5cyclictest1584-21diskmemload12:36:453
8378992017,3cyclictest32-21ksoftirqd/209:50:132
836899205,6cyclictest224-21systemd-journal11:00:010
8368992017,1cyclictest0-21swapper/009:16:090
8368992017,1cyclictest0-21swapper/009:12:480
836899201,2cyclictest0-21swapper/011:51:520
8382991917,1cyclictest0-21swapper/311:14:323
8382991916,3cyclictest39-21ksoftirqd/312:17:223
8382991916,1cyclictest1584-21diskmemload11:05:263
8382991914,3cyclictest381rcuc/311:57:003
837899194,1cyclictest141rcu_preempt12:15:352
837899194,10cyclictest0-21swapper/207:30:112
837899193,1cyclictest141rcu_preempt08:35:132
8378991918,1cyclictest32-21ksoftirqd/211:23:472
8374991918,1cyclictest0-21swapper/107:10:111
838299188,10cyclictest0-21swapper/312:20:163
838299181,3cyclictest0-21swapper/311:35:133
837899189,3cyclictest32-21ksoftirqd/211:11:202
8378991816,1cyclictest32-21ksoftirqd/211:02:242
837499181,17cyclictest0-21swapper/110:21:391
838299179,5cyclictest39-21ksoftirqd/309:45:503
838299177,9cyclictest280282sleep311:31:313
837899174,3cyclictest141rcu_preempt11:53:552
837899170,2cyclictest0-21swapper/211:49:592
837899170,1cyclictest141rcu_preempt09:40:132
837499171,15cyclictest0-21swapper/109:45:121
836899174,10cyclictest27350-21apt-get09:30:120
838299166,10cyclictest0-21swapper/310:35:593
838299165,10cyclictest27633-21unixbench_singl07:45:273
838299164,7cyclictest39-21ksoftirqd/310:29:553
8382991615,1cyclictest0-21swapper/310:53:573
8382991611,5cyclictest39-21ksoftirqd/312:10:183
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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