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2026-05-30 - 14:14

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 376 highest latencies:
System rackeslot6s.osadl.org (updated Sat May 30, 2026 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38834019910295,5cyclictest311ktimers/222:35:192
3883401997769,5cyclictest311ktimers/223:35:012
3883401997769,5cyclictest311ktimers/223:35:002
3883400997410,18cyclictest3900914-21/usr/sbin/munin20:50:171
3883397996511,12cyclictest3917683-21apt-get22:30:020
3883397995926,30cyclictest3932130-21grep23:50:270
388339799584,23cyclictest131ktimers/023:00:020
388340099551,12cyclictest0-21swapper/100:20:001
3883397995334,17cyclictest167350irq/118-8000000.ethernet-tx019:50:000
3883401995144,4cyclictest311ktimers/200:05:192
388339799514,15cyclictest0-21swapper/021:05:000
3883397995042,4cyclictest167350irq/118-8000000.ethernet-tx020:10:000
3883401994942,4cyclictest3922834-21munin-plugin-st23:00:012
388340199475,9cyclictest3893195-21rm20:05:012
388340099473,17cyclictest22-21rcuc/123:30:011
3883401994638,4cyclictest0-21swapper/222:10:282
3883401994638,4cyclictest0-21swapper/222:10:282
3883401994637,6cyclictest3910005-21munin-run21:45:002
3883400994635,7cyclictest3892969-21grep20:00:271
3883400994624,8cyclictest0-21swapper/119:25:011
3883401994537,5cyclictest0-21swapper/223:15:002
3883401994532,9cyclictest0-21swapper/221:50:002
3883401994530,10cyclictest0-21swapper/223:05:012
3883401994529,13cyclictest311ktimers/222:15:122
3883401994519,14cyclictest311ktimers/200:15:132
388340099451,6cyclictest0-21swapper/120:00:011
3883397994538,4cyclictest167350irq/118-8000000.ethernet-tx021:40:230
388339799451,3cyclictest0-21swapper/000:20:120
3883397994513,29cyclictest131ktimers/023:05:190
3883401994428,8cyclictest3938886-21unixbench_multi00:30:282
3883400994432,8cyclictest3934681-21grep00:05:301
3883400994431,9cyclictest3938028-21grep00:25:301
388339799448,11cyclictest0-21swapper/020:05:000
3883397994437,4cyclictest167350irq/118-8000000.ethernet-tx021:10:200
3883397994432,9cyclictest3919463-21sendmail22:40:000
3883397994431,8cyclictest3913316-21grep22:00:290
3883397994430,11cyclictest0-21swapper/021:25:280
3883397994416,26cyclictest131ktimers/023:45:180
3883401994322,16cyclictest311ktimers/222:45:132
3883400994321,10cyclictest0-21swapper/121:15:211
3883397994338,2cyclictest0-21swapper/022:05:280
3883397994337,3cyclictest167350irq/118-8000000.ethernet-tx000:30:140
3883397994335,6cyclictest15-21rcuc/021:15:190
388339799433,37cyclictest0-21swapper/023:05:000
3883397994331,8cyclictest0-21swapper/019:30:270
3883397994317,21cyclictest14-21rcu_preempt21:25:020
388339799431,40cyclictest0-21swapper/021:30:180
388339799431,40cyclictest0-21swapper/020:50:220
3883401994233,5cyclictest3883394-21cyclictest19:55:292
3883401994230,8cyclictest3930224-21phc2sys23:40:262
3883400994227,9cyclictest0-21swapper/123:50:271
3883400994224,10cyclictest0-21swapper/121:35:281
3883397994236,3cyclictest167350irq/118-8000000.ethernet-tx021:05:190
3883397994233,7cyclictest0-21swapper/020:20:270
3883397994233,5cyclictest0-21swapper/023:35:270
3883397994230,8cyclictest0-21swapper/021:45:280
3883401994131,5cyclictest0-21swapper/219:20:272
3883401994130,8cyclictest0-21swapper/219:50:282
3883401994117,12cyclictest311ktimers/219:10:012
3883400994135,3cyclictest3935592-21munin-plugin-st00:15:011
3883400994135,3cyclictest3935592-21munin-plugin-st00:15:011
3883400994127,8cyclictest3917616-21grep22:25:271
3883400994125,10cyclictest0-21swapper/123:35:281
388340099411,2cyclictest0-21swapper/122:35:011
388339799416,28cyclictest15-21rcuc/020:50:020
3883397994134,4cyclictest15-21rcuc/019:10:180
388339799413,36cyclictest0-21swapper/020:30:250
3883397994133,4cyclictest167350irq/118-8000000.ethernet-tx000:05:220
3883397994132,5cyclictest3917713-21cat22:30:000
3883397994129,8cyclictest0-21swapper/021:50:280
388339799411,38cyclictest0-21swapper/023:10:210
388339799411,37cyclictest0-21swapper/000:15:010
388339799411,37cyclictest0-21swapper/000:15:010
3883401994030,7cyclictest0-21swapper/220:40:282
3883401994023,9cyclictest0-21swapper/222:30:012
3883401994022,15cyclictest3905991-21/usr/sbin/munin21:20:182
3883401994022,15cyclictest3905991-21/usr/sbin/munin21:20:182
3883400994031,5cyclictest0-21swapper/119:30:281
3883400994022,11cyclictest0-21swapper/119:45:011
3883400994022,11cyclictest0-21swapper/119:45:011
388339799408,7cyclictest0-21swapper/000:05:020
3883397994034,4cyclictest0-21swapper/021:55:100
3883397994033,4cyclictest0-21swapper/020:10:260
3883397994032,5cyclictest0-21swapper/020:55:280
3883397994028,8cyclictest0-21swapper/022:15:280
388339799401,36cyclictest0-21swapper/022:40:200
3883401993924,12cyclictest311ktimers/220:25:112
3883401993924,11cyclictest0-21swapper/221:35:312
3883400993929,5cyclictest0-21swapper/121:45:211
3883400993927,8cyclictest0-21swapper/120:55:281
3883400993927,7cyclictest0-21swapper/120:45:281
3883400993923,9cyclictest0-21swapper/123:05:311
3883400993923,10cyclictest0-21swapper/121:55:281
388339799396,29cyclictest3885712-21fschecks_time19:20:180
3883397993934,2cyclictest0-21swapper/021:35:200
3883397993933,3cyclictest3888392-21if_eth119:35:220
388339799393,2cyclictest0-21swapper/000:20:010
3883397993928,8cyclictest0-21swapper/019:50:290
3883397993928,8cyclictest0-21swapper/000:35:270
3883397993928,6cyclictest0-21swapper/000:25:310
388339799391,36cyclictest0-21swapper/019:15:030
3883401993827,7cyclictest0-21swapper/219:30:282
3883401993824,10cyclictest0-21swapper/221:05:302
3883401993823,11cyclictest311ktimers/220:30:132
3883400993828,6cyclictest0-21swapper/123:00:271
3883400993828,5cyclictest3894737-21unixbench_singl20:10:281
3883400993828,5cyclictest0-21swapper/122:05:281
388340099381,4cyclictest0-21swapper/123:20:011
3883397993831,4cyclictest3889210-21cut19:40:210
3883397993831,4cyclictest3889210-21cut19:40:210
3883397993830,4cyclictest20850irq/208-8000000.ethernet20:40:000
3883397993828,6cyclictest3892056-21grep19:55:290
3883397993821,15cyclictest0-21swapper/020:29:010
3883397993819,17cyclictest0-21swapper/021:20:170
3883397993812,24cyclictest0-21swapper/000:00:000
3883401993730,3cyclictest3933064-21sendmail00:00:002
3883401993726,7cyclictest0-21swapper/220:35:272
3883401993721,7cyclictest0-21swapper/220:45:302
3883401993721,11cyclictest0-21swapper/219:15:012
3883400993726,6cyclictest0-21swapper/121:25:281
3883400993725,6cyclictest0-21swapper/123:00:001
3883400993723,10cyclictest0-21swapper/122:15:001
3883400993723,10cyclictest0-21swapper/122:15:001
3883397993730,4cyclictest0-21swapper/023:22:570
3883397993726,7cyclictest0-21swapper/023:15:260
388339799371,7cyclictest3928347-21grep23:30:200
388339799371,7cyclictest3928347-21grep23:30:200
3883397993717,18cyclictest0-21swapper/023:40:150
388339799371,34cyclictest0-21swapper/022:45:120
3883401993632,2cyclictest0-21swapper/200:30:022
3883401993626,7cyclictest0-21swapper/221:00:292
3883401993624,8cyclictest0-21swapper/222:10:012
3883401993623,8cyclictest0-21swapper/223:55:012
3883401993621,12cyclictest311ktimers/221:50:112
3883401993621,10cyclictest0-21swapper/219:40:272
3883401993621,10cyclictest0-21swapper/219:40:272
3883401993620,12cyclictest311ktimers/200:10:132
3883401993620,12cyclictest311ktimers/200:10:132
3883400993629,4cyclictest0-21swapper/122:05:011
3883400993628,5cyclictest3921988-21apt22:55:001
3883400993627,6cyclictest0-21swapper/121:30:181
3883400993625,7cyclictest3909968-21grep21:40:291
3883400993623,9cyclictest0-21swapper/119:45:271
3883400993623,10cyclictest0-21swapper/120:20:271
3883397993630,4cyclictest0-21swapper/020:15:190
3883397993627,6cyclictest0-21swapper/022:20:270
3883397993623,9cyclictest0-21swapper/019:10:020
3883397993619,15cyclictest0-21swapper/022:51:350
388340199355,7cyclictest0-21swapper/220:10:022
3883401993530,3cyclictest3895640-21sh20:20:012
3883401993528,4cyclictest0-21swapper/222:20:292
3883401993519,13cyclictest311ktimers/223:20:092
388340199351,29cyclictest30-21rcuc/220:55:282
3883400993529,4cyclictest0-21swapper/119:25:261
3883400993526,6cyclictest0-21swapper/121:20:291
3883400993526,6cyclictest0-21swapper/121:20:281
3883400993526,6cyclictest0-21swapper/100:35:001
3883400993526,5cyclictest0-21swapper/100:20:271
3883400993521,10cyclictest0-21swapper/120:40:201
388340099351,3cyclictest0-21swapper/123:25:011
3883397993525,6cyclictest0-21swapper/020:40:260
3883397993516,17cyclictest0-21swapper/019:25:110
3883401993426,5cyclictest0-21swapper/219:30:012
3883401993425,6cyclictest274-21systemd-journal21:19:592
3883401993425,5cyclictest0-21swapper/223:25:202
3883401993425,5cyclictest0-21swapper/222:50:172
3883401993424,7cyclictest3933268-21/usr/sbin/munin00:00:222
3883401993422,8cyclictest0-21swapper/222:40:202
3883401993419,11cyclictest311ktimers/222:30:112
3883400993425,6cyclictest0-21swapper/123:10:161
388340099341,4cyclictest0-21swapper/122:25:011
3883397993425,7cyclictest3914665-21sh22:10:200
3883397993425,7cyclictest3914665-21sh22:10:190
3883397993418,14cyclictest0-21swapper/023:27:400
3883401993325,5cyclictest311ktimers/220:10:222
3883400993324,6cyclictest3898937-21grep20:35:271
3883401993225,4cyclictest0-21swapper/219:15:262
3883401993221,8cyclictest0-21swapper/221:35:012
3883401993220,9cyclictest311ktimers/221:55:092
3883401993220,8cyclictest0-21swapper/221:25:292
3883401993218,10cyclictest0-21swapper/200:20:282
388340199321,25cyclictest0-21swapper/200:35:172
3883400993226,4cyclictest0-21swapper/123:45:181
388340099320,29cyclictest14-21rcu_preempt21:05:301
3883401993122,6cyclictest30-21rcuc/221:10:242
3883401993120,8cyclictest0-21swapper/219:45:272
3883401993119,9cyclictest3888279-21cut19:35:202
3883401993115,13cyclictest311ktimers/220:50:152
388340099316,15cyclictest3915345-21/usr/sbin/munin22:15:191
3883400993121,7cyclictest3893914-21grep20:05:291
3883400993119,8cyclictest0-21swapper/123:35:021
3883400993119,8cyclictest0-21swapper/123:35:011
388340099311,4cyclictest0-21swapper/119:40:001
3883400993113,12cyclictest0-21swapper/120:25:271
3883401993022,6cyclictest0-21swapper/223:05:262
3883401993022,4cyclictest0-21swapper/223:35:272
3883401993018,9cyclictest0-21swapper/223:15:262
3883401993017,8cyclictest311ktimers/222:05:012
3883400993021,5cyclictest0-21swapper/121:50:201
3883400993021,5cyclictest0-21swapper/121:10:201
3883400993021,5cyclictest0-21swapper/120:15:241
3883400993019,8cyclictest0-21swapper/119:15:011
3883400993014,9cyclictest0-21swapper/120:35:021
3883401992919,7cyclictest0-21swapper/223:45:282
3883400992922,5cyclictest3919440-21sshd22:38:231
388340099291,26cyclictest0-21swapper/122:40:231
3883401992819,5cyclictest30-21rcuc/220:20:262
3883400992817,8cyclictest0-21swapper/121:05:001
388340099281,4cyclictest0-21swapper/100:35:161
388340099281,2cyclictest0-21swapper/119:55:001
388340099272,22cyclictest0-21swapper/122:48:051
3883400992720,4cyclictest14-21rcu_preempt19:20:011
3883400992617,7cyclictest231ktimers/123:55:121
3883400992614,8cyclictest3933819-21grep00:00:291
3883400992519,4cyclictest0-21swapper/123:40:191
3883400992210,5cyclictest0-21swapper/119:10:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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