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2024-11-24 - 07:52

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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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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 100 highest latencies:
System rackeslot5s.osadl.org (updated Sun Nov 24, 2024 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1752299250,24cyclictest28616-21perf00:00:001
17529992420,4cyclictest0-21swapper/300:30:533
17529992420,3cyclictest20436-21awk21:30:003
1752999240,23cyclictest22327-21apt19:20:003
1752999240,23cyclictest0-21swapper/322:20:513
1752299240,23cyclictest0-21swapper/121:15:491
1752299240,0cyclictest0-21swapper/123:25:501
17521992422,1cyclictest0-21swapper/000:30:530
1752199240,23cyclictest0-21swapper/021:15:490
1752199240,1cyclictest28607-21apt-get00:00:000
1752199240,0cyclictest12076-21apt-get23:25:500
17525992323,0cyclictest0-21swapper/223:05:502
1752599230,22cyclictest15635-21sendmail-msp21:20:002
1752599230,21cyclictest313-21systemd-journal21:15:002
1752299230,23cyclictest0-21swapper/123:00:491
17521992321,2cyclictest7035-21apt-get00:20:510
1752199230,22cyclictest593-21dbus-daemon23:10:000
1752199230,22cyclictest17302-21munin-plugin-st22:30:000
17529992220,1cyclictest22509-21munin-run22:40:003
17529992219,3cyclictest6364-21apt-get21:00:493
17529992219,2cyclictest23770-21awk23:50:003
17529992216,5cyclictest19890-21cron19:15:003
1752999220,21cyclictest9118-21perf00:25:003
1752999220,21cyclictest2890-21wc22:00:003
1752999220,21cyclictest2890-21wc22:00:003
1752999220,21cyclictest0-21swapper/322:15:503
1752999220,1cyclictest28115-21munin-run21:45:003
17525992220,1cyclictest9370-21munin-run23:20:002
17525992219,2cyclictest313-21systemd-journal21:00:002
1752599220,2cyclictest21377-21latency_hist23:45:002
1752599220,21cyclictest593-21dbus-daemon20:40:002
1752599220,21cyclictest0-21swapper/200:25:002
1752599220,1cyclictest25974-21apt-get21:40:482
17522992222,0cyclictest12225-21apt-get00:30:531
17522992220,1cyclictest12826-21apt-get22:20:511
1752299221,0cyclictest8013-21apt-get22:10:511
1752299220,21cyclictest4534-21dump-pmu-power23:10:001
1752299220,21cyclictest30823-21apt-get21:50:541
1752299220,21cyclictest16997-21kworker/u8:222:40:001
1752299220,1cyclictest17304-21basename22:30:001
1752299220,0cyclictest16868-21apt-get23:35:501
1752299220,0cyclictest16868-21apt-get23:35:501
17521992220,1cyclictest0-21swapper/021:35:490
1752199220,21cyclictest9821-21apt-get00:25:500
1752199220,21cyclictest9377-21awk23:20:000
1752199220,21cyclictest788-21apt-get21:55:490
1752199220,21cyclictest788-21apt-get21:55:490
1752199220,21cyclictest27448-21apt-get19:30:490
1752199220,21cyclictest22506-21grep22:40:000
1752199220,21cyclictest0-21swapper/019:50:490
1752199220,0cyclictest14920-21apt-get00:35:020
17529992120,1cyclictest28425-21apt-get21:45:503
17529992120,1cyclictest0-21swapper/321:35:483
17529992120,1cyclictest0-21swapper/319:25:483
17529992119,1cyclictest1827-21apt-get00:10:513
17529992119,1cyclictest10842-21perf21:10:003
17529992118,3cyclictest0-21swapper/322:00:513
1752999210,20cyclictest0-21swapper/300:00:013
1752999210,1cyclictest0-21swapper/321:00:003
1752999210,1cyclictest0-21swapper/320:35:503
1752999210,0cyclictest0-21swapper/300:35:503
17525992121,0cyclictest3226-21apt-get22:00:512
17525992120,1cyclictest583-21avahi-daemon22:40:002
17525992120,1cyclictest25229-21apt-get22:45:502
17525992120,1cyclictest24087-21apt-get23:50:542
17525992119,1cyclictest0-21swapper/222:25:002
1752599210,4cyclictest313-21systemd-journal20:05:002
1752599210,21cyclictest0-21swapper/222:55:502
1752599210,20cyclictest4869-21apt-get23:10:502
1752599210,20cyclictest0-21swapper/219:40:472
1752599210,0cyclictest15218-21apt-get22:25:492
1752599210,0cyclictest0-21swapper/222:05:502
17522992121,0cyclictest21069-21apt-get21:30:011
17522992121,0cyclictest10407-21apt-get22:15:501
17522992120,0cyclictest8762-21apt-get21:05:511
17522992120,0cyclictest0-21swapper/121:35:491
1752299210,21cyclictest0-21swapper/121:25:481
1752299210,20cyclictest31839-21apt-get00:05:501
1752299210,20cyclictest26700-21apt-get20:35:511
1752299210,20cyclictest0-21swapper/123:30:531
1752299210,20cyclictest0-21swapper/123:20:511
1752299210,20cyclictest0-21swapper/100:25:501
1752299210,1cyclictest9367-21sendmail-msp23:20:001
1752299210,0cyclictest14299-21apt-get00:35:021
1752299210,0cyclictest0-21swapper/123:40:481
1752299210,0cyclictest0-21swapper/121:55:491
1752299210,0cyclictest0-21swapper/121:55:491
1752299210,0cyclictest0-21swapper/119:55:511
1752299210,0cyclictest0-21swapper/119:50:491
1752299210,0cyclictest0-21swapper/119:35:491
1752299210,0cyclictest0-21swapper/119:30:491
17521992121,0cyclictest0-21swapper/021:30:010
17521992120,0cyclictest28607-21apt-get00:00:010
1752199210,21cyclictest0-21swapper/019:15:480
1752199210,20cyclictest19289-21apt-get23:40:480
1752199210,20cyclictest0-21swapper/023:30:530
1752199210,20cyclictest0-21swapper/022:40:490
1752199210,20cyclictest0-21swapper/021:00:490
1752199210,20cyclictest0-21swapper/000:05:500
17529992020,0cyclictest32310-21apt-get19:40:483
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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