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2026-05-19 - 04:37

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 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.

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 100 highest latencies:
System rackeslot6s.osadl.org (updated Tue May 19, 2026 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2571130995345,4cyclictest2574753-21munin-plugin-st19:30:002
2571130995142,5cyclictest2579919-21sendmail20:00:002
2571128995037,9cyclictest0-21swapper/121:00:011
2571128995037,9cyclictest0-21swapper/121:00:001
2571125995042,5cyclictest2573052-21apt19:20:000
2571125994942,5cyclictest2598669-21munin-plugin-st21:50:010
2571130994836,9cyclictest2617434-21sendmail23:40:012
2571128994835,9cyclictest0-21swapper/120:20:011
2571125994840,5cyclictest2594455-21grep21:25:000
2571125994840,4cyclictest0-21swapper/020:35:120
2571130994740,3cyclictest2573057-21munin-plugin-st19:20:002
2571130994729,9cyclictest0-21swapper/221:55:002
2571128994731,11cyclictest0-21swapper/100:35:291
2571125994737,5cyclictest2625162-21head00:20:290
2571125994732,12cyclictest131ktimers/022:25:140
2571125994717,4cyclictest2597821-21cron21:45:000
2571128994626,16cyclictest0-21swapper/100:10:271
2571125994637,5cyclictest167350irq/118-8000000.ethernet-tx019:45:250
2571125994637,5cyclictest0-21swapper/022:20:270
2571125994637,5cyclictest0-21swapper/020:00:220
2571125994619,24cyclictest2583913-21tail20:20:240
2571130994533,7cyclictest2587506-21unixbench_multi20:40:292
2571128994534,7cyclictest2613092-21unixbench_multi23:10:301
2571125994536,7cyclictest2627728-21grep00:35:290
257112599452,6cyclictest2607645-21lsblk22:40:190
257112599452,6cyclictest2607645-21lsblk22:40:190
2571130994432,9cyclictest0-21swapper/221:55:282
2571130994431,9cyclictest0-21swapper/222:05:302
2571130994330,9cyclictest0-21swapper/200:00:302
2571130994330,10cyclictest0-21swapper/220:54:592
2571130994310,26cyclictest0-21swapper/221:30:272
2571128994331,8cyclictest0-21swapper/121:55:001
2571128994331,8cyclictest0-21swapper/121:05:291
2571125994336,4cyclictest20650irq/252-8000000.ethernet19:20:230
2571125994336,4cyclictest167350irq/118-8000000.ethernet-tx022:55:250
2571125994335,4cyclictest2613728-21phc2sys23:15:280
2571125994335,4cyclictest2613728-21phc2sys23:15:280
2571125994331,9cyclictest0-21swapper/020:00:000
2571130994232,7cyclictest2594456-21munin-plugin-st21:25:012
2571130994229,10cyclictest2603912-21sendmail22:20:002
2571128994234,5cyclictest2616538-21unixbench_singl23:30:301
2571128994231,8cyclictest2615686-21unixbench_singl23:25:281
2571128994230,9cyclictest2626044-21munin-plugin-st00:30:001
2571128994226,9cyclictest0-21swapper/122:10:291
2571125994234,5cyclictest20850irq/208-8000000.ethernet20:20:020
2571125994232,6cyclictest2621616-21grep00:00:300
257112599422,5cyclictest2588847-21/usr/sbin/munin20:50:210
2571125994220,20cyclictest0-21swapper/019:50:050
2571125994220,20cyclictest0-21swapper/019:50:050
257112599421,36cyclictest0-21swapper/019:30:030
2571128994130,7cyclictest0-21swapper/123:40:001
2571128994129,8cyclictest0-21swapper/123:40:281
2571128994127,10cyclictest0-21swapper/119:35:351
257112599415,31cyclictest2608681-21tail22:45:260
2571125994137,2cyclictest0-21swapper/021:35:000
2571125994135,4cyclictest0-21swapper/019:35:200
2571125994133,5cyclictest19750irq/27-20000000.i2c00:25:180
2571125994133,5cyclictest0-21swapper/021:55:280
2571125994133,4cyclictest20850irq/208-8000000.ethernet19:45:000
257112599412,5cyclictest2620839-21grep23:55:260
257112599411,7cyclictest2602767-21phc2sys-jitter22:10:250
2571130994029,8cyclictest2624271-21sendmail00:20:012
2571130994026,9cyclictest0-21swapper/222:45:302
2571128994028,8cyclictest0-21swapper/123:59:591
2571128994026,11cyclictest0-21swapper/121:45:311
2571128994026,11cyclictest0-21swapper/119:50:011
2571128994011,19cyclictest2618559-21/usr/sbin/munin23:45:231
2571125994036,3cyclictest0-21swapper/020:45:110
2571125994036,3cyclictest0-21swapper/020:45:110
2571125994031,5cyclictest0-21swapper/019:10:010
2571125994031,5cyclictest0-21swapper/019:10:010
2571125994030,7cyclictest131ktimers/020:55:300
2571125994030,7cyclictest131ktimers/020:55:290
2571130993932,4cyclictest167550irq/134-8000000.ethernet-tx220:45:242
2571130993932,4cyclictest167550irq/134-8000000.ethernet-tx220:45:232
2571130993929,6cyclictest0-21swapper/223:20:292
2571128993931,5cyclictest0-21swapper/120:55:001
2571128993931,4cyclictest2596964-21cron21:40:011
2571128993931,4cyclictest2596964-21cron21:40:001
2571128993931,4cyclictest0-21swapper/121:30:191
2571128993928,7cyclictest2597829-21munin-plugin-st21:44:591
2571128993927,8cyclictest0-21swapper/121:15:001
2571128993925,10cyclictest0-21swapper/100:30:281
2571125993935,2cyclictest0-21swapper/020:45:000
2571125993929,5cyclictest0-21swapper/000:30:260
2571125993927,8cyclictest0-21swapper/023:05:280
2571125993927,7cyclictest2609735-21grep22:50:280
257112599391,36cyclictest2581841-21cpu20:10:160
2571130993831,4cyclictest167550irq/134-8000000.ethernet-tx200:25:242
2571130993825,9cyclictest0-21swapper/221:45:312
2571130993825,9cyclictest0-21swapper/221:40:262
2571130993823,8cyclictest0-21swapper/220:35:002
257113099381,30cyclictest0-21swapper/222:35:242
2571128993830,4cyclictest167450irq/126-8000000.ethernet-tx119:15:291
2571128993829,7cyclictest2625207-21munin-plugin-st00:25:011
2571128993825,9cyclictest0-21swapper/122:30:191
2571128993823,9cyclictest0-21swapper/123:20:291
2571128993823,9cyclictest0-21swapper/120:40:281
2571125993831,4cyclictest0-21swapper/022:35:180
2571125993830,4cyclictest20850irq/208-8000000.ethernet22:20:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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