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2024-07-27 - 14:27

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #8

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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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 rack0slot8s.osadl.org (updated Sat Jul 27, 2024 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
944801000,95rtkit-daemon0-21swapper/1107:07:533
303462960,0sleep90-21swapper/911:30:1111
288991820,56ptp4l0-21swapper/107:05:561
213572670,0sleep60-21swapper/610:35:148
2291426554,9sleep100-21swapper/1007:07:102
2289526454,8sleep40-21swapper/407:06:516
2293826352,9sleep60-21swapper/607:07:298
2290425952,5sleep00-21swapper/007:07:000
3792550,0sleep80-21swapper/809:25:2110
2289825543,10sleep70-21swapper/707:06:549
2097725544,8sleep50-21swapper/507:05:157
61902540,0sleep10-21swapper/112:20:211
28802530,0sleep10-21swapper/110:54:591
88832520,0sleep60-21swapper/610:20:028
160052450,0sleep20-21swapper/209:05:024
2347899262,19cyclictest0-21swapper/409:20:026
2346599253,15cyclictest0-21swapper/110:15:021
23506992310,5cyclictest75-21ksoftirqd/1011:20:002
2350699230,1cyclictest0-21swapper/1010:35:172
2349299213,10cyclictest0-21swapper/712:25:019
23501992018,1cyclictest0-21swapper/907:54:5511
2347499192,9cyclictest0-21swapper/308:10:015
2346999193,10cyclictest0-21swapper/209:10:014
2346599193,10cyclictest0-21swapper/109:00:011
288991180,0ptp4l0-21swapper/111:40:231
2351199181,2cyclictest0-21swapper/1111:40:183
2350699180,16cyclictest0-21swapper/1012:30:182
2346999182,10cyclictest0-21swapper/211:05:004
288991170,0ptp4l0-21swapper/111:30:231
2348399173,8cyclictest0-21swapper/512:15:007
2347499174,8cyclictest0-21swapper/307:15:285
2347499172,9cyclictest0-21swapper/311:15:005
2347499172,9cyclictest0-21swapper/311:05:005
2346999173,9cyclictest0-21swapper/212:30:004
2346999173,9cyclictest0-21swapper/207:20:004
2346999172,10cyclictest0-21swapper/210:15:014
23469991714,2cyclictest0-21swapper/210:05:184
2346599173,8cyclictest0-21swapper/112:35:001
2346599172,9cyclictest0-21swapper/108:55:021
2346599172,10cyclictest0-21swapper/110:05:011
206502170,0sleep60-21swapper/611:15:198
288991160,0ptp4l0-21swapper/111:50:181
288991160,0ptp4l0-21swapper/111:15:211
288991160,0ptp4l0-21swapper/110:40:221
288991160,0ptp4l0-21swapper/109:15:181
288991160,0ptp4l0-21swapper/108:45:271
2349699163,9cyclictest0-21swapper/809:05:0110
2349699163,8cyclictest0-21swapper/811:30:0010
2349299163,8cyclictest0-21swapper/712:15:009
2349299163,7cyclictest0-21swapper/708:10:009
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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