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2026-04-28 - 11:33

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 Apr 28, 2026 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
815897995345,5cyclictest835837-21munin-plugin-st21:05:001
815900995138,8cyclictest866515-21apt-key00:05:022
815897995144,3cyclictest858799-21latency_hist23:20:001
815897995040,7cyclictest833200-21grep20:45:301
815895995024,15cyclictest131ktimers/023:55:100
815895994942,3cyclictest0-21swapper/022:25:280
815900994839,5cyclictest841644-21unixbench_multi21:35:282
815897994839,5cyclictest0-21swapper/122:20:011
815897994837,6cyclictest827275-21grep20:10:291
815895994836,8cyclictest0-21swapper/019:10:280
815900994735,9cyclictest0-21swapper/223:20:292
815897994732,11cyclictest0-21swapper/121:10:271
815895994734,9cyclictest866402-21apt-get00:05:010
815900994638,6cyclictest821389-21run-parts19:40:002
815895994624,15cyclictest15-21rcuc/023:25:140
815897994535,6cyclictest839170-21grep21:20:271
815897994534,6cyclictest843460-21grep21:50:001
815897994532,9cyclictest0-21swapper/123:30:001
815895994533,9cyclictest0-21swapper/000:15:000
815900994426,14cyclictest0-21swapper/223:35:292
815897994433,7cyclictest844244-21grep21:50:291
815897994432,8cyclictest0-21swapper/122:45:311
81589599445,35cyclictest0-21swapper/019:40:280
815895994437,4cyclictest167350irq/118-8000000.ethernet-tx022:10:240
81589599443,4cyclictest824010-21munin-run19:55:000
815900994333,7cyclictest0-21swapper/223:55:272
815900994331,8cyclictest0-21swapper/221:00:252
815900994331,8cyclictest0-21swapper/220:55:282
815900994331,8cyclictest0-21swapper/200:35:282
815900994330,8cyclictest0-21swapper/220:45:292
815900994329,9cyclictest0-21swapper/222:30:282
815900994329,9cyclictest0-21swapper/219:30:272
815900994329,8cyclictest0-21swapper/223:25:302
81590099432,2cyclictest0-21swapper/200:15:022
815897994334,4cyclictest0-21swapper/122:25:251
815897994333,7cyclictest825648-21grep20:00:291
815897994333,6cyclictest823952-21grep19:50:281
815897994332,7cyclictest851965-21sendmail22:40:001
81589599437,6cyclictest871833-21df00:35:180
815895994335,4cyclictest167350irq/118-8000000.ethernet-tx019:15:250
815895994333,7cyclictest858750-21grep23:15:290
815895994333,6cyclictest862957-21grep23:40:280
815895994330,9cyclictest0-21swapper/020:35:280
815900994230,8cyclictest0-21swapper/220:14:592
815900994229,8cyclictest0-21swapper/222:40:292
815900994228,9cyclictest0-21swapper/220:20:272
815897994231,6cyclictest864670-21grep23:50:281
815897994229,8cyclictest0-21swapper/122:55:291
815897994224,9cyclictest0-21swapper/122:10:271
815895994234,5cyclictest20850irq/208-8000000.ethernet19:55:280
815895994234,4cyclictest862182-21sendmail23:39:590
815895994233,5cyclictest20650irq/252-8000000.ethernet21:15:010
815895994226,11cyclictest0-21swapper/020:20:270
815900994133,4cyclictest0-21swapper/200:20:292
815900994129,8cyclictest0-21swapper/220:50:272
815900994129,8cyclictest0-21swapper/220:30:292
815900994129,7cyclictest0-21swapper/221:50:292
815900994128,9cyclictest0-21swapper/220:35:292
815900994128,8cyclictest0-21swapper/221:55:292
815900994127,9cyclictest0-21swapper/222:20:282
815900994127,9cyclictest0-21swapper/222:20:282
815900994112,15cyclictest825065-21/usr/sbin/munin20:00:192
815897994133,4cyclictest0-21swapper/123:45:231
815897994131,6cyclictest831551-21grep20:35:281
815900994030,6cyclictest0-21swapper/223:10:282
815900994029,7cyclictest0-21swapper/219:10:282
815900994028,8cyclictest0-21swapper/223:15:292
815900994028,8cyclictest0-21swapper/222:10:282
815897994032,5cyclictest828184-21grep20:15:301
815897994031,6cyclictest0-21swapper/122:20:291
815897994031,6cyclictest0-21swapper/122:20:281
815897994030,5cyclictest0-21swapper/119:25:211
815897994030,5cyclictest0-21swapper/119:25:211
815897994029,8cyclictest823183-21apt-key19:50:001
815897994029,7cyclictest0-21swapper/119:30:271
815897994027,10cyclictest845211-21sendmail22:00:001
815895994033,4cyclictest167350irq/118-8000000.ethernet-tx021:40:190
81589599401,4cyclictest829382-21sh20:25:200
81589599401,4cyclictest0-21swapper/023:20:200
815900993927,9cyclictest0-21swapper/221:10:292
815900993927,8cyclictest0-21swapper/222:15:292
815900993926,9cyclictest0-21swapper/223:30:272
815900993926,9cyclictest0-21swapper/223:30:262
815900993926,10cyclictest0-21swapper/200:25:292
815897993930,6cyclictest861238-21grep23:30:271
815897993930,6cyclictest861238-21grep23:30:271
815897993930,6cyclictest839939-21grep21:25:281
815897993930,6cyclictest839939-21grep21:25:271
815897993930,5cyclictest834059-21grep20:50:271
815897993930,5cyclictest0-21swapper/121:15:291
815897993929,7cyclictest821282-21unixbench_multi19:35:281
815897993929,7cyclictest0-21swapper/119:45:001
815897993927,8cyclictest0-21swapper/123:00:301
815897993922,3cyclictest8666901/usr/sbin/munin00:05:281
815895993931,5cyclictest863760-21unixbench_multi23:45:310
815895993930,5cyclictest0-21swapper/020:00:290
815895993928,9cyclictest0-21swapper/020:35:000
815895993928,7cyclictest0-21swapper/020:50:270
81589599391,36cyclictest0-21swapper/021:05:200
815900993831,5cyclictest0-21swapper/221:40:292
815900993828,7cyclictest0-21swapper/223:05:282
815900993826,8cyclictest0-21swapper/222:05:292
815900993826,8cyclictest0-21swapper/221:25:282
815900993826,8cyclictest0-21swapper/221:25:272
815900993826,8cyclictest0-21swapper/221:15:292
815900993825,8cyclictest0-21swapper/200:10:302
81590099382,3cyclictest0-21swapper/219:20:022
815900993823,12cyclictest0-21swapper/220:15:302
815897993830,4cyclictest0-21swapper/123:20:281
815897993827,8cyclictest0-21swapper/123:35:301
815897993826,8cyclictest0-21swapper/100:35:281
815895993828,4cyclictest854093-21cut22:50:210
815895993828,4cyclictest854093-21cut22:50:210
815895993826,8cyclictest0-21swapper/023:05:290
81589599381,35cyclictest0-21swapper/021:25:230
81589599381,35cyclictest0-21swapper/021:25:230
81589599381,35cyclictest0-21swapper/020:55:120
81589599381,35cyclictest0-21swapper/020:15:160
81589599381,33cyclictest848328-21/usr/sbin/munin22:15:270
815900993727,7cyclictest863869-21munin-plugin-st23:50:002
815900993727,5cyclictest0-21swapper/221:45:242
815900993726,7cyclictest0-21swapper/223:40:272
815900993726,6cyclictest0-21swapper/220:25:292
815900993725,8cyclictest0-21swapper/219:45:292
815900993725,8cyclictest0-21swapper/219:15:312
815900993725,8cyclictest0-21swapper/200:05:302
815900993721,10cyclictest0-21swapper/222:50:302
815900993721,10cyclictest0-21swapper/222:50:292
815897993726,6cyclictest0-21swapper/122:50:271
815897993726,6cyclictest0-21swapper/122:50:271
815897993720,11cyclictest231ktimers/121:35:121
815895993730,4cyclictest20650irq/252-8000000.ethernet19:30:270
815895993730,4cyclictest167350irq/118-8000000.ethernet-tx020:15:010
815895993729,5cyclictest0-21swapper/023:30:180
815895993729,5cyclictest0-21swapper/023:30:180
815895993729,4cyclictest20650irq/252-8000000.ethernet19:45:200
815895993728,6cyclictest821274-21grep19:35:280
815895993728,5cyclictest167350irq/118-8000000.ethernet-tx000:20:180
815895993728,5cyclictest0-21swapper/022:20:290
815895993728,5cyclictest0-21swapper/022:20:280
815895993728,4cyclictest0-21swapper/023:00:300
81589599372,5cyclictest840858-21head21:30:290
81589599371,7cyclictest0-21swapper/000:20:010
815900993624,8cyclictest0-21swapper/219:50:292
815900993624,8cyclictest0-21swapper/219:40:292
815900993620,10cyclictest0-21swapper/222:35:252
815897993629,5cyclictest863030-21munin-plugin-st23:45:001
815897993628,4cyclictest868079-21grep00:10:291
815897993625,7cyclictest832399-21grep20:40:301
815897993624,9cyclictest0-21swapper/123:55:271
815897993623,7cyclictest0-21swapper/121:40:201
815897993621,8cyclictest0-21swapper/120:05:301
815897993621,8cyclictest0-21swapper/120:05:291
81589599367,27cyclictest0-21swapper/019:25:290
81589599367,27cyclictest0-21swapper/019:25:280
815895993629,4cyclictest20650irq/252-8000000.ethernet22:00:300
815895993628,5cyclictest20850irq/208-8000000.ethernet20:45:170
815895993628,4cyclictest864832-21grep23:55:010
815895993627,5cyclictest0-21swapper/021:20:270
815895993627,5cyclictest0-21swapper/020:05:260
815895993627,5cyclictest0-21swapper/020:05:260
815895993624,9cyclictest0-21swapper/021:35:190
81589599361,33cyclictest0-21swapper/022:30:280
815900993525,7cyclictest0-21swapper/222:25:272
815900993524,8cyclictest0-21swapper/221:05:282
815900993524,7cyclictest0-21swapper/221:30:282
81589799354,25cyclictest22-21rcuc/123:10:181
815897993525,7cyclictest852807-21latency_hist22:45:001
815897993525,6cyclictest836605-21grep21:05:281
815897993523,9cyclictest818914-21sed19:25:011
815897993517,12cyclictest231ktimers/122:05:101
81589799351,27cyclictest824208-21/usr/sbin/munin19:55:161
815895993528,5cyclictest20850irq/208-8000000.ethernet19:20:150
815895993526,6cyclictest0-21swapper/021:00:260
815895993526,5cyclictest0-21swapper/022:45:310
815895993525,6cyclictest838290-21grep21:15:300
81589599351,32cyclictest0-21swapper/022:08:380
815900993426,4cyclictest0-21swapper/219:25:282
815900993426,4cyclictest0-21swapper/219:25:282
815900993424,7cyclictest0-21swapper/221:20:282
815900993420,9cyclictest0-21swapper/223:50:282
815897993428,4cyclictest0-21swapper/120:20:251
815897993426,5cyclictest0-21swapper/121:00:001
815897993426,4cyclictest0-21swapper/100:00:241
815895993428,4cyclictest20850irq/208-8000000.ethernet22:55:220
815895993428,4cyclictest20850irq/208-8000000.ethernet21:45:210
815895993427,4cyclictest23850irq/422-mmc122:35:210
815895993427,4cyclictest167350irq/118-8000000.ethernet-tx021:50:270
815895993426,4cyclictest20650irq/252-8000000.ethernet22:40:160
815895993426,4cyclictest0-21swapper/020:40:300
815895993421,9cyclictest0-21swapper/000:05:210
815900993322,8cyclictest0-21swapper/219:55:282
815900993322,7cyclictest0-21swapper/223:00:292
815900993322,7cyclictest0-21swapper/220:05:292
815900993322,7cyclictest0-21swapper/220:05:292
815900993316,10cyclictest0-21swapper/222:55:192
81589799334,23cyclictest0-21swapper/119:10:241
815897993325,4cyclictest0-21swapper/120:25:291
815897993324,5cyclictest0-21swapper/100:20:301
81589599331,27cyclictest845342-21grep22:00:010
815900993219,9cyclictest0-21swapper/222:45:322
81589799323,22cyclictest24-21ksoftirqd/119:20:011
815897993222,6cyclictest0-21swapper/100:25:281
81589599329,9cyclictest856776-1kworker/0:2H+mmc_complete23:15:010
815895993225,4cyclictest20650irq/252-8000000.ethernet00:30:180
815900993122,5cyclictest0-21swapper/200:30:282
815900993121,6cyclictest0-21swapper/222:00:302
815897993121,7cyclictest0-21swapper/100:20:011
815897993117,7cyclictest0-21swapper/122:00:261
815895993125,4cyclictest20850irq/208-8000000.ethernet00:25:260
815900993020,6cyclictest0-21swapper/220:40:222
81589799305,16cyclictest830707-21grep20:30:281
815897993021,6cyclictest870910-21/usr/sbin/munin00:30:231
815900992911,11cyclictest0-21swapper/219:10:022
815897992921,5cyclictest0-21swapper/123:05:221
815897992910,4cyclictest8321systemd-network22:34:151
815897992710,13cyclictest840728-21mailstats21:30:291
815897992620,4cyclictest0-21swapper/119:10:011
815897992620,4cyclictest0-21swapper/119:10:011
815895992517,5cyclictest0-21swapper/019:10:010
815895992517,5cyclictest0-21swapper/019:10:010
815900991912,3cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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