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2026-08-12 - 12:25

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 Wed Aug 12, 2026 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2061612996630,32cyclictest0-21swapper/022:05:270
2061612995427,24cyclictest2100331-21latency_hist22:55:000
2061616995336,10cyclictest0-21swapper/222:40:022
2061612995341,8cyclictest0-21swapper/000:40:020
2061615995241,7cyclictest2096775-21grep22:30:301
206161699511,30cyclictest0-21swapper/221:40:012
2061612995138,9cyclictest0-21swapper/022:20:000
2061616995037,9cyclictest2079854-21munin-plugin-st20:55:002
2061615995039,8cyclictest2063552-21sendmail19:20:001
2061616994931,14cyclictest0-21swapper/200:10:002
206161699491,25cyclictest0-21swapper/220:35:012
2061612994937,8cyclictest0-21swapper/022:00:000
2061612994936,9cyclictest0-21swapper/019:35:010
2061612994920,4cyclictest0-21swapper/000:15:010
206161299491,29cyclictest0-21swapper/000:35:010
206161699481,24cyclictest0-21swapper/200:20:012
2061616994736,7cyclictest2084931-21munin-plugin-st21:25:002
206161699471,19cyclictest0-21swapper/219:45:012
2061615994738,5cyclictest0-21swapper/120:45:301
2061612994739,5cyclictest2096828-21munin-plugin-st22:35:000
2061612994716,4cyclictest0-21swapper/020:55:290
2061612994711,33cyclictest0-21swapper/020:30:300
2061616994635,7cyclictest0-21swapper/200:40:012
2061616994628,10cyclictest0-21swapper/222:55:002
2061612994629,14cyclictest167350irq/118-8000000.ethernet-tx023:00:230
2061612994629,14cyclictest167350irq/118-8000000.ethernet-tx023:00:230
2061615994539,3cyclictest2078176-21munin-plugin-st20:45:001
2061615994532,8cyclictest0-21swapper/122:35:301
2061615994532,8cyclictest0-21swapper/100:20:291
2061612994534,8cyclictest0-21swapper/022:55:290
2061616994434,7cyclictest2111271-21sendmail00:00:002
2061616994432,8cyclictest0-21swapper/221:45:282
2061616994336,4cyclictest0-21swapper/220:45:002
2061616994333,5cyclictest2064286-21grep19:20:282
2061616994333,5cyclictest0-21swapper/223:40:222
2061616994333,5cyclictest0-21swapper/223:40:212
2061616994331,8cyclictest0-21swapper/223:20:002
2061616994330,8cyclictest0-21swapper/222:15:012
2061616994330,8cyclictest0-21swapper/220:25:302
2061616994327,9cyclictest0-21swapper/223:05:312
206161699432,20cyclictest0-21swapper/221:10:012
2061615994326,9cyclictest0-21swapper/120:35:001
2061615994311,26cyclictest0-21swapper/122:40:261
2061612994336,5cyclictest2063428-21unixbench_multi19:15:290
206161299433,5cyclictest0-21swapper/019:20:180
2061612994335,5cyclictest2111267-21grep00:00:000
2061612994327,10cyclictest0-21swapper/023:05:300
206161299431,36cyclictest0-21swapper/000:00:020
2061616994231,7cyclictest2081554-21munin-plugin-st21:05:002
2061616994230,7cyclictest0-21swapper/222:00:302
2061616994228,10cyclictest0-21swapper/200:30:292
206161699421,30cyclictest0-21swapper/220:10:012
2061615994233,4cyclictest0-21swapper/100:25:281
2061615994231,5cyclictest0-21swapper/100:15:211
2061615994230,7cyclictest2095880-21grep22:25:261
2061615994228,8cyclictest0-21swapper/120:20:001
2061612994232,6cyclictest0-21swapper/000:20:170
2061612994231,7cyclictest0-21swapper/020:00:240
2061612994229,8cyclictest0-21swapper/022:40:270
2061612994229,10cyclictest0-21swapper/023:25:300
206161299422,4cyclictest2107014-21users23:30:290
206161299421,6cyclictest2076848-21sh20:35:240
206161299421,6cyclictest2076848-21sh20:35:240
206161299421,39cyclictest0-21swapper/022:00:270
206161299421,36cyclictest2074992-21latency_hist20:25:010
2061616994134,4cyclictest0-21swapper/222:25:142
2061616994132,4cyclictest0-21swapper/223:50:282
2061616994129,8cyclictest0-21swapper/220:20:302
2061616994129,7cyclictest0-21swapper/220:10:192
2061616994128,9cyclictest2085659-21grep21:25:312
2061616994128,8cyclictest0-21swapper/223:00:282
2061616994128,8cyclictest0-21swapper/223:00:282
2061616994125,11cyclictest0-21swapper/219:50:262
2061615994133,4cyclictest0-21swapper/121:00:301
2061615994132,4cyclictest0-21swapper/122:50:011
2061615994132,4cyclictest0-21swapper/122:50:011
2061615994131,5cyclictest2111151-21grep23:55:311
2061615994129,7cyclictest2106101-21grep23:25:291
2061615994128,7cyclictest0-21swapper/120:05:361
2061615994128,4cyclictest0-21swapper/123:50:271
2061615994127,7cyclictest0-21swapper/119:30:281
2061615994126,9cyclictest0-21swapper/122:15:021
2061615994123,10cyclictest0-21swapper/119:20:291
2061612994129,8cyclictest0-21swapper/021:20:310
2061612994129,8cyclictest0-21swapper/019:10:280
206161299411,38cyclictest0-21swapper/021:35:180
206161299411,38cyclictest0-21swapper/020:45:280
206161299411,37cyclictest0-21swapper/023:10:260
2061616994028,6cyclictest0-21swapper/223:10:292
2061616994022,12cyclictest0-21swapper/222:50:012
2061616994022,12cyclictest0-21swapper/222:50:012
206161699401,11cyclictest0-21swapper/223:35:012
2061615994033,3cyclictest2095151-21munin-plugin-st22:25:001
2061615994029,7cyclictest0-21swapper/123:00:271
2061615994029,7cyclictest0-21swapper/123:00:271
2061615994028,9cyclictest231ktimers/119:55:131
2061615994028,8cyclictest0-21swapper/120:20:261
2061615994028,5cyclictest0-21swapper/119:40:291
2061615994027,9cyclictest0-21swapper/121:05:331
2061612994028,9cyclictest0-21swapper/020:10:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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