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2024-07-12 - 17:48

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #6

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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackeslot6s.osadl.org (updated Fri Jul 12, 2024 00:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1724020991161,3cyclictest1726173-21/usr/sbin/munin19:20:190
172402699803,68cyclictest1739009-21/usr/sbin/munin20:35:203
1724025997365,5cyclictest0-21swapper/219:35:012
1724025997365,5cyclictest0-21swapper/219:35:012
172402599602,23cyclictest1724845-21munin-node19:15:012
172402099606,52cyclictest0-21swapper/020:00:010
1724025995750,4cyclictest1758435-21munin-plugin-st22:30:002
1724022995641,10cyclictest1247-21cron19:30:001
172402299551,23cyclictest0-21swapper/100:40:011
1724020995342,9cyclictest1753272-21sendmail22:00:010
1724022995241,8cyclictest1735341-21munin-plugin-st20:15:001
1724022995241,8cyclictest1735341-21munin-plugin-st20:15:001
172402099521,18cyclictest25050irq/422-mmc122:10:010
1724020995147,2cyclictest0-21swapper/020:45:020
1724020995143,5cyclictest0-21swapper/022:00:160
1724020995136,7cyclictest1724288-21sh19:10:200
172402099511,8cyclictest0-21swapper/019:20:010
1724025994910,15cyclictest0-21swapper/220:00:022
172402299485,11cyclictest1764424-21kworker/u8:0+ext4-rsv-conversion23:25:021
172402299485,11cyclictest1764424-21kworker/u8:0+ext4-rsv-conversion23:25:021
1724020994816,6cyclictest0-21swapper/020:30:020
1724025994732,8cyclictest1729341-21sendmail19:40:002
1724025994730,13cyclictest0-21swapper/223:10:322
1724020994740,4cyclictest0-21swapper/021:00:120
1724020994740,4cyclictest0-21swapper/021:00:120
1724020994720,25cyclictest1707585-21kworker/u8:0-events_power_efficient21:05:310
1724025994637,5cyclictest0-21swapper/219:40:322
1724022994639,5cyclictest0-21swapper/100:20:011
172402099464,20cyclictest15-21rcuc/019:35:010
172402099464,20cyclictest15-21rcuc/019:35:010
1724020994640,3cyclictest1774545-21grep00:00:400
1724020994640,3cyclictest1774545-21grep00:00:400
1724020994639,4cyclictest20950irq/251-8000000.ethernet22:50:200
1724025994532,7cyclictest1760007-21grep22:35:322
1724022994539,4cyclictest1764440-21munin-plugin-st23:05:001
1724022994538,4cyclictest1732710-21sendmail20:00:001
1724022994526,13cyclictest1762659-21apt-key22:55:011
1724020994537,4cyclictest20950irq/251-8000000.ethernet20:10:170
1724020994537,4cyclictest20950irq/251-8000000.ethernet20:10:170
1724020994533,8cyclictest0-21swapper/000:30:000
1724020994521,9cyclictest26950irq/343-s-wl18xx22:45:150
172402099451,9cyclictest0-21swapper/000:20:020
1724025994436,5cyclictest1725962-21munin-plugin-st19:20:002
1724025994432,7cyclictest1738745-21grep20:30:332
1724022994436,4cyclictest1756734-21sendmail22:20:001
1724022994436,4cyclictest1756734-21sendmail22:20:001
1724022994428,11cyclictest0-21swapper/122:45:351
1724020994436,5cyclictest1737875-21cron20:30:000
1724020994436,4cyclictest20950irq/251-8000000.ethernet21:45:250
172402099443,5cyclictest1765668-21fschecks_time23:10:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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