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2026-03-13 - 03:28

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 100 highest latencies:
System rackeslot6s.osadl.org (updated Fri Mar 13, 2026 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
207642499167109,54cyclictest20850irq/208-8000000.ethernet19:15:020
207642699706,22cyclictest0-21swapper/121:15:011
207642699631,35cyclictest0-21swapper/119:15:021
207642499581,50cyclictest0-21swapper/022:00:110
207642499572,52cyclictest0-21swapper/022:10:130
2076426995648,4cyclictest2114947-21munin-plugin-st22:54:591
2076424995613,40cyclictest0-21swapper/020:15:220
207642699533,32cyclictest0-21swapper/100:25:011
2076426995140,7cyclictest2111567-21munin-plugin-st22:35:001
207642499513,13cyclictest0-21swapper/019:50:010
2076424994942,4cyclictest167350irq/118-8000000.ethernet-tx019:55:210
207642499491,40cyclictest0-21swapper/021:00:120
207642499491,40cyclictest0-21swapper/021:00:120
2076426994841,4cyclictest2118317-21apt23:15:001
2076424994841,4cyclictest20650irq/252-8000000.ethernet21:35:190
2076429994738,5cyclictest0-21swapper/222:10:012
2076426994730,12cyclictest0-21swapper/121:55:301
2076424994741,3cyclictest167350irq/118-8000000.ethernet-tx021:40:170
2076424994728,15cyclictest0-21swapper/023:50:290
2076429994633,9cyclictest2119162-21apt23:20:012
207642499466,16cyclictest2082117-21sshd19:40:190
207642499466,16cyclictest2082117-21sshd19:40:190
2076426994537,5cyclictest2094500-21grep20:55:011
2076426994532,9cyclictest0-21swapper/122:00:291
2076426994531,8cyclictest0-21swapper/100:10:281
2076426994512,15cyclictest2108384-21/usr/sbin/munin22:15:171
2076424994539,3cyclictest167350irq/118-8000000.ethernet-tx020:52:370
2076424994536,5cyclictest20850irq/208-8000000.ethernet22:10:010
207642499452,39cyclictest0-21swapper/022:30:290
207642499451,9cyclictest0-21swapper/019:20:170
2076429994437,4cyclictest2092822-21munin-plugin-st20:45:002
2076426994428,9cyclictest0-21swapper/119:15:281
2076426994428,8cyclictest0-21swapper/122:10:271
207642499441,37cyclictest2100599-21cut21:30:020
2076429994335,4cyclictest0-21swapper/219:20:002
2076426994332,7cyclictest0-21swapper/121:40:281
2076426994331,8cyclictest0-21swapper/122:40:281
2076426994331,8cyclictest0-21swapper/119:20:251
2076426994330,8cyclictest0-21swapper/121:50:291
2076426994327,11cyclictest0-21swapper/100:35:291
2076424994337,4cyclictest0-21swapper/019:30:210
2076424994336,4cyclictest167350irq/118-8000000.ethernet-tx023:30:010
2076424994336,4cyclictest167350irq/118-8000000.ethernet-tx023:30:010
2076424994331,9cyclictest0-21swapper/023:05:000
207642499432,5cyclictest2119681-21meminfo23:20:250
207642499431,39cyclictest0-21swapper/021:50:200
2076429994229,7cyclictest0-21swapper/220:25:292
2076426994231,7cyclictest0-21swapper/121:00:291
2076426994231,7cyclictest0-21swapper/121:00:291
2076426994229,8cyclictest0-21swapper/120:20:311
2076426994229,8cyclictest0-21swapper/120:20:311
2076426994227,9cyclictest0-21swapper/123:50:291
2076426994227,8cyclictest0-21swapper/122:10:001
2076424994235,4cyclictest167350irq/118-8000000.ethernet-tx020:05:250
2076424994224,11cyclictest0-21swapper/020:30:300
207642499421,39cyclictest2128204-21processes00:10:270
207642499421,38cyclictest2085794-21uname20:00:260
2076429994133,5cyclictest0-21swapper/200:00:012
2076429994131,5cyclictest2088084-21lsblk20:15:212
2076426994130,7cyclictest0-21swapper/120:10:271
2076426994127,9cyclictest0-21swapper/123:05:281
2076426994127,9cyclictest0-21swapper/120:40:271
2076426994127,10cyclictest0-21swapper/100:00:291
2076424994135,3cyclictest167350irq/118-8000000.ethernet-tx023:45:200
2076424994135,3cyclictest0-21swapper/022:20:190
2076424994131,5cyclictest0-21swapper/021:15:280
207642499412,3cyclictest2100797-21fschecks_time21:30:210
2076424994116,3cyclictest0-21swapper/021:15:010
207642499411,5cyclictest2121584-21unixbench_multi23:30:280
207642499411,4cyclictest2125585-21meminfo23:55:250
207642499411,4cyclictest0-21swapper/022:25:240
2076429994027,9cyclictest0-21swapper/221:55:212
2076429994026,11cyclictest0-21swapper/221:50:262
2076426994029,8cyclictest2112417-21sendmail22:40:011
2076426994024,9cyclictest0-21swapper/123:15:291
2076424994034,4cyclictest20850irq/208-8000000.ethernet00:40:000
2076424994029,7cyclictest0-21swapper/019:15:210
2076424994023,15cyclictest0-21swapper/020:25:290
207642499401,37cyclictest0-21swapper/022:45:200
207642499401,37cyclictest0-21swapper/022:45:200
207642499401,36cyclictest2103612-21ps21:45:260
2076429993929,6cyclictest2086795-21grep20:05:292
2076429993926,8cyclictest0-21swapper/219:30:012
2076426993929,7cyclictest0-21swapper/122:55:291
2076426993927,9cyclictest0-21swapper/100:05:301
2076426993927,9cyclictest0-21swapper/100:05:301
2076426993927,7cyclictest0-21swapper/120:30:301
2076426993926,9cyclictest0-21swapper/121:20:291
2076426993926,9cyclictest0-21swapper/120:15:291
2076426993926,8cyclictest0-21swapper/120:25:301
207642699392,29cyclictest0-21swapper/100:15:171
2076424993933,4cyclictest20850irq/208-8000000.ethernet00:10:000
2076424993933,4cyclictest20850irq/208-8000000.ethernet00:10:000
2076424993931,5cyclictest0-21swapper/022:35:280
2076424993924,9cyclictest0-21swapper/019:55:010
2076424993922,15cyclictest0-21swapper/000:15:160
207642499391,4cyclictest2122820-21df23:40:150
207642499391,4cyclictest0-21swapper/020:45:180
207642499391,4cyclictest0-21swapper/000:00:250
207642499391,36cyclictest0-21swapper/000:25:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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