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2026-08-18 - 12:12

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 792 highest latencies:
System rackeslot6s.osadl.org (updated Tue Aug 18, 2026 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31583549910572,15cyclictest20650irq/252-8000000.ethernet23:35:190
315835799821,41cyclictest0-21swapper/122:00:011
315835799681,52cyclictest0-21swapper/121:15:141
3158354996832,20cyclictest20650irq/252-8000000.ethernet21:15:020
3158354996832,20cyclictest20650irq/252-8000000.ethernet21:15:010
315835799651,59cyclictest0-21swapper/100:15:011
315835799651,53cyclictest0-21swapper/121:20:121
315835799651,50cyclictest0-21swapper/123:45:111
315835799651,49cyclictest0-21swapper/121:10:101
315835799651,49cyclictest0-21swapper/121:10:101
315835799641,50cyclictest0-21swapper/120:55:131
315835799641,49cyclictest0-21swapper/121:45:141
3158357996331,26cyclictest0-21swapper/121:05:191
315835499631,4cyclictest0-21swapper/023:15:090
315835799621,48cyclictest0-21swapper/123:30:151
315835799621,48cyclictest0-21swapper/119:35:101
315835799621,48cyclictest0-21swapper/119:35:101
3158357996125,30cyclictest0-21swapper/120:45:271
315835799611,46cyclictest0-21swapper/122:20:161
315835799611,46cyclictest0-21swapper/122:00:121
315835799603,34cyclictest0-21swapper/120:00:011
315835799602,47cyclictest3207474-21apt-get23:55:121
315835799602,47cyclictest3207474-21apt-get23:55:121
315835799602,46cyclictest3194347-21/usr/sbin/munin22:35:281
315835799601,46cyclictest0-21swapper/122:50:151
315835799601,46cyclictest0-21swapper/122:50:151
315835799601,45cyclictest0-21swapper/121:35:131
315835799601,42cyclictest0-21swapper/123:35:121
315835799601,36cyclictest0-21swapper/100:05:011
315835799581,44cyclictest0-21swapper/100:35:131
3158357995812,40cyclictest1660-21snmpd23:40:381
3158357995812,14cyclictest0-21swapper/119:45:011
3158357995730,21cyclictest3167800-21grep20:00:301
3158357995729,21cyclictest3178173-21grep21:00:311
315835799572,48cyclictest3162801-21sshd19:31:401
315835799572,47cyclictest3170945-21/usr/sbin/munin20:20:271
315835799571,48cyclictest3184739-21/usr/sbin/munin21:40:271
315835799571,48cyclictest3160803-21meminfo19:20:241
315835799571,44cyclictest0-21swapper/121:25:161
3158358995647,6cyclictest3167051-21munin-plugin-st20:00:002
315835799561,49cyclictest3201559-21/usr/sbin/munin23:20:201
315835799561,47cyclictest3189749-21/usr/sbin/munin22:10:251
315835799561,43cyclictest0-21swapper/122:40:131
315835799552,46cyclictest3171835-21/usr/sbin/munin20:25:281
315835799552,45cyclictest3200535-21apt-get23:15:131
315835799551,47cyclictest3213533-21/usr/sbin/munin00:30:201
315835799551,47cyclictest3202639-21/usr/sbin/munin23:25:271
315835799551,46cyclictest3199147-21/usr/sbin/munin23:05:231
315835799551,46cyclictest3165631-21/usr/sbin/munin19:50:171
315835799551,46cyclictest3165631-21/usr/sbin/munin19:50:171
3158358995437,12cyclictest0-21swapper/222:20:002
315835799542,44cyclictest3212552-21apt-get00:25:181
315835799542,44cyclictest3209776-21/usr/sbin/munin00:05:321
315835799542,44cyclictest3186152-21ssh21:50:191
315835799542,44cyclictest3186152-21ssh21:50:191
315835799542,44cyclictest3169783-21apt-get20:15:131
315835799542,44cyclictest3169783-21apt-get20:15:121
315835799541,46cyclictest3200202-21/usr/sbin/munin23:10:291
315835799541,46cyclictest3197229-21/usr/sbin/munin22:55:171
315835799541,46cyclictest3165020-21/usr/sbin/munin19:45:231
315835799541,45cyclictest3188751-21/usr/sbin/munin22:05:221
315835799541,45cyclictest3168176-21/usr/sbin/munin20:05:191
315835799541,45cyclictest3161684-21/usr/sbin/munin19:25:281
315835799541,41cyclictest0-21swapper/119:10:131
315835799541,41cyclictest0-21swapper/119:10:131
3158354995427,25cyclictest0-21swapper/020:15:160
3158354995427,25cyclictest0-21swapper/020:15:160
315835799531,48cyclictest0-21swapper/100:15:121
315835799531,45cyclictest3211930-21/usr/sbin/munin00:20:241
315835799531,45cyclictest3174633-21/usr/sbin/munin20:40:291
315835799531,45cyclictest3169156-21/usr/sbin/munin20:10:231
315835799531,44cyclictest3172558-21sh20:30:221
315835799531,43cyclictest3182888-21/usr/sbin/munin21:30:221
315835899521,14cyclictest0-21swapper/221:10:012
315835899521,14cyclictest0-21swapper/221:10:012
315835799522,43cyclictest3160151-21/usr/sbin/munin19:15:291
315835799521,44cyclictest3173429-21/usr/sbin/munin20:35:211
315835799521,43cyclictest3198017-21apt-get23:00:131
315835799521,43cyclictest3195716-21/usr/sbin/munin22:45:231
315835799521,43cyclictest3192305-21/usr/sbin/munin22:25:231
315835799521,41cyclictest3206632-21/usr/sbin/munin23:50:121
3158354995244,4cyclictest167350irq/118-8000000.ethernet-tx022:45:240
315835799511,44cyclictest3193387-21/usr/sbin/munin22:30:291
315835799511,42cyclictest3190318-21apt-get22:15:131
3158354995142,5cyclictest20850irq/208-8000000.ethernet23:10:010
3158354995133,15cyclictest167350irq/118-8000000.ethernet-tx022:35:210
3158358995034,11cyclictest311ktimers/222:05:112
3158354995041,6cyclictest3164525-21munin-plugin-st19:44:590
315835499501,38cyclictest0-21swapper/023:55:010
315835499501,38cyclictest0-21swapper/023:55:010
315835799491,39cyclictest3175883-21apt-get20:50:151
315835499489,4cyclictest3172281-21gpgv20:30:010
3158358994733,8cyclictest3167846-21grep20:00:292
315835499474,15cyclictest15-21rcuc/021:00:010
3158354994739,4cyclictest167350irq/118-8000000.ethernet-tx020:20:190
3158354994738,5cyclictest3214048-21munin-plugin-st00:35:000
3158354994727,16cyclictest131ktimers/022:25:130
3158354994640,3cyclictest167350irq/118-8000000.ethernet-tx020:05:220
3158358994537,5cyclictest3166206-21munin-plugin-st19:55:012
3158358994537,5cyclictest3166206-21munin-plugin-st19:55:012
3158358994534,7cyclictest0-21swapper/220:15:302
3158358994534,7cyclictest0-21swapper/220:15:302
3158358994533,8cyclictest3163675-21sendmail19:40:012
3158358994533,8cyclictest3163675-21sendmail19:40:012
3158358994531,10cyclictest0-21swapper/222:55:012
3158358994531,10cyclictest0-21swapper/222:55:012
3158354994538,4cyclictest0-21swapper/019:25:300
3158354994537,4cyclictest167350irq/118-8000000.ethernet-tx000:35:300
3158354994533,7cyclictest3172960-21grep20:30:300
315835499452,33cyclictest0-21swapper/022:20:010
315835499451,3cyclictest0-21swapper/023:15:000
3158358994437,4cyclictest32-21ksoftirqd/223:25:012
3158358994430,10cyclictest0-21swapper/220:25:302
3158358994429,9cyclictest0-21swapper/220:10:302
3158354994434,6cyclictest0-21swapper/020:50:010
3158354994336,5cyclictest0-21swapper/021:35:160
3158354994334,4cyclictest167350irq/118-8000000.ethernet-tx023:40:290
315835499422,5cyclictest3186269-21irqstats21:50:220
315835499422,5cyclictest3186269-21irqstats21:50:210
315835499421,38cyclictest3185609-21gunzip21:45:280
315835499421,38cyclictest3174500-21memory20:40:260
315835499420,6cyclictest3203330-21ssh23:30:210
3158358994128,7cyclictest3187438-21grep21:55:322
3158358994121,15cyclictest311ktimers/200:05:172
3158354994135,2cyclictest0-21swapper/022:15:000
3158354994134,4cyclictest167350irq/118-8000000.ethernet-tx020:40:010
3158354994133,4cyclictest167350irq/118-8000000.ethernet-tx021:00:260
3158354994132,6cyclictest0-21swapper/019:30:210
315835499412,36cyclictest0-21swapper/000:15:170
315835499411,9cyclictest3178195-21kworker/u8:3+events_power_efficient21:20:170
315835499411,34cyclictest0-21swapper/019:40:020
315835499411,34cyclictest0-21swapper/019:40:020
3158354994111,7cyclictest12-21ksoftirqd/020:05:010
3158354994111,2cyclictest0-21swapper/022:55:010
3158354994111,2cyclictest0-21swapper/022:55:010
3158358994017,15cyclictest311ktimers/222:20:132
3158354994034,4cyclictest0-21swapper/019:20:230
3158354994032,5cyclictest20850irq/208-8000000.ethernet00:10:000
3158354994029,7cyclictest3165292-21grep19:45:270
3158354994026,9cyclictest0-21swapper/022:30:300
315835499402,3cyclictest3183191-21awk21:30:270
315835499401,4cyclictest0-21swapper/021:05:200
315835499401,37cyclictest0-21swapper/023:00:250
315835499401,36cyclictest3169073-21fschecks_time20:10:220
3158358993927,9cyclictest3203921-21apt-key23:35:012
315835899392,30cyclictest1660-21snmpd20:30:172
3158358993915,9cyclictest3159282-21irqstats19:15:022
3158358993915,9cyclictest3159282-21irqstats19:15:022
315835799392,32cyclictest0-21swapper/119:10:011
3158354993934,2cyclictest0-21swapper/019:55:240
3158354993932,4cyclictest0-21swapper/023:50:180
3158354993932,4cyclictest0-21swapper/000:15:000
3158354993930,6cyclictest3160178-21grep19:15:290
315835499392,32cyclictest131ktimers/022:55:280
3158354993922,15cyclictest0-21swapper/023:45:160
315835499391,4cyclictest3191605-21phc2sys-jitter22:20:280
315835499391,36cyclictest0-21swapper/023:20:030
3158358993827,8cyclictest0-21swapper/221:40:302
3158358993825,9cyclictest0-21swapper/222:55:282
3158358993825,8cyclictest0-21swapper/221:30:282
3158358993823,8cyclictest0-21swapper/223:50:292
3158358993819,14cyclictest311ktimers/220:35:142
3158354993831,4cyclictest0-21swapper/020:50:270
3158354993830,4cyclictest19750irq/27-20000000.i2c22:40:280
3158354993827,6cyclictest0-21swapper/023:25:210
315835499381,35cyclictest0-21swapper/021:41:350
315835499381,35cyclictest0-21swapper/000:00:160
3158358993728,6cyclictest3199394-21grep23:05:272
3158358993726,5cyclictest0-21swapper/221:20:002
3158358993724,9cyclictest0-21swapper/220:40:292
3158358993724,9cyclictest0-21swapper/219:15:292
3158354993731,4cyclictest20850irq/208-8000000.ethernet21:20:000
3158354993730,4cyclictest20850irq/208-8000000.ethernet22:00:010
3158354993727,7cyclictest0-21swapper/022:00:300
315835499371,3cyclictest0-21swapper/021:25:190
315835499371,2cyclictest0-21swapper/000:25:010
3158358993626,6cyclictest0-21swapper/222:00:282
3158358993626,5cyclictest3206420-21kworker/u8:3-ext4-rsv-conversion00:25:022
3158358993619,12cyclictest311ktimers/222:45:142
3158358993617,14cyclictest311ktimers/221:20:152
315835899361,29cyclictest30-21rcuc/200:15:192
315835499361,33cyclictest0-21swapper/022:10:010
3158358993526,6cyclictest0-21swapper/219:25:232
3158358993526,5cyclictest0-21swapper/221:05:302
3158358993524,6cyclictest0-21swapper/222:40:292
3158358993523,6cyclictest3201136-21grep23:15:262
3158358993517,13cyclictest311ktimers/223:10:162
3158358993517,12cyclictest311ktimers/220:20:172
3158358993513,16cyclictest167550irq/134-8000000.ethernet-tx222:30:122
3158358993513,12cyclictest311ktimers/223:40:152
3158354993528,4cyclictest20850irq/208-8000000.ethernet19:50:260
3158354993528,4cyclictest20850irq/208-8000000.ethernet19:50:250
3158354993528,4cyclictest20850irq/208-8000000.ethernet00:25:200
3158358993427,4cyclictest3197784-21kworker/u8:4-events_power_efficient23:05:002
3158358993426,5cyclictest0-21swapper/220:55:282
3158358993425,4cyclictest0-21swapper/220:50:182
3158358993422,9cyclictest1660-21snmpd20:05:112
3158358993422,5cyclictest3208041-21grep23:55:292
3158358993422,5cyclictest3208041-21grep23:55:292
3158358993326,4cyclictest3206367-21unixbench_singl23:45:282
3158358993325,5cyclictest0-21swapper/221:50:202
3158358993325,5cyclictest0-21swapper/221:50:202
3158358993325,4cyclictest0-21swapper/223:35:192
3158358993322,7cyclictest0-21swapper/222:35:282
3158358993318,10cyclictest0-21swapper/200:30:282
315835499331,7cyclictest3159217-21date19:15:000
315835499331,7cyclictest3159217-21date19:15:000
3158358993226,4cyclictest167550irq/134-8000000.ethernet-tx219:10:012
3158358993224,6cyclictest3175039-21/usr/sbin/munin20:45:272
3158358993218,9cyclictest0-21swapper/223:30:002
3158358993215,11cyclictest311ktimers/219:20:112
3158358993123,4cyclictest0-21swapper/222:10:192
3158358993116,10cyclictest311ktimers/200:35:152
3158358993112,14cyclictest311ktimers/219:40:122
315835499311,4cyclictest3158490-21latency_hist19:10:000
3158358993020,7cyclictest0-21swapper/221:25:302
3158358993018,8cyclictest0-21swapper/219:45:282
3158358992919,7cyclictest0-21swapper/200:10:282
3158358992913,14cyclictest167550irq/134-8000000.ethernet-tx200:26:072
315835899291,26cyclictest0-21swapper/221:37:222
3158358992820,4cyclictest0-21swapper/221:45:272
3158358992819,4cyclictest0-21swapper/219:30:262
3158358992818,5cyclictest0-21swapper/200:00:152
315835899281,25cyclictest0-21swapper/221:04:392
3158358992812,14cyclictest167550irq/134-8000000.ethernet-tx222:27:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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