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2026-06-19 - 15:01

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 all highest latencies:
System rackeslot6s.osadl.org (updated Fri Jun 19, 2026 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
578238997116,17cyclictest633273-21/usr/sbin/munin00:30:181
578238995542,8cyclictest583639-21sendmail19:40:001
578238995542,8cyclictest583639-21sendmail19:40:001
578241995446,4cyclictest608320-21munin-plugin-st22:05:002
578238995443,7cyclictest0-21swapper/120:00:001
578238995243,5cyclictest598937-21munin-plugin-st21:10:001
578241995042,4cyclictest623687-21munin-plugin-st23:35:002
578236995035,10cyclictest0-21swapper/000:35:010
578241994938,6cyclictest578465-21sshd19:10:172
578238994835,9cyclictest604002-21sendmail21:40:001
578238994832,9cyclictest589549-21munin-plugin-st20:15:001
578241994733,8cyclictest593547-21phc2sys20:35:262
578236994739,5cyclictest580115-21grep19:15:290
578236994736,7cyclictest20850irq/208-8000000.ethernet21:20:290
578236994735,8cyclictest0-21swapper/022:40:000
578238994639,3cyclictest586175-21cut19:55:001
578238994636,6cyclictest585335-21munin-plugin-st19:50:001
578238994632,8cyclictest598042-21unixbench_singl21:00:291
578238994631,9cyclictest0-21swapper/121:20:291
578236994634,8cyclictest0-21swapper/022:10:000
578236994622,7cyclictest15-21rcuc/000:40:010
578241994535,6cyclictest632175-21grep00:20:312
578238994533,7cyclictest604854-21munin-plugin-st21:45:001
578238994529,11cyclictest0-21swapper/100:35:291
578236994537,4cyclictest0-21swapper/019:10:280
578236994535,6cyclictest0-21swapper/023:45:290
578241994436,5cyclictest610932-21sendmail22:20:002
578241994434,7cyclictest0-21swapper/222:00:002
578241994434,7cyclictest0-21swapper/222:00:002
578241994426,12cyclictest0-21swapper/221:00:292
578238994434,7cyclictest580173-21apt-get19:20:001
578238994433,7cyclictest0-21swapper/119:20:271
578238994416,19cyclictest22-21rcuc/122:15:021
578236994432,9cyclictest596328-21grep20:50:300
578241994335,4cyclictest585334-21munin-plugin-st19:50:002
578241994332,7cyclictest0-21swapper/221:20:292
578241994314,23cyclictest0-21swapper/221:29:242
578238994320,13cyclictest591450-21/usr/sbin/munin20:25:181
578236994335,4cyclictest590405-21sendmail20:20:000
578241994232,5cyclictest0-21swapper/200:15:312
578238994230,8cyclictest0-21swapper/123:20:291
578238994230,7cyclictest0-21swapper/120:05:291
578238994229,8cyclictest0-21swapper/119:15:011
578238994226,9cyclictest0-21swapper/122:05:281
578236994232,6cyclictest0-21swapper/020:20:270
578241994132,4cyclictest0-21swapper/219:20:252
578241994131,4cyclictest580187-21sendmail19:20:002
578241994130,7cyclictest0-21swapper/220:25:282
578241994129,7cyclictest0-21swapper/223:10:282
578238994133,5cyclictest627152-21munin-plugin-st23:55:011
578238994129,8cyclictest0-21swapper/122:35:301
578238994128,8cyclictest0-21swapper/122:30:291
578238994125,9cyclictest0-21swapper/122:40:281
578238994122,10cyclictest0-21swapper/123:45:301
578238994121,9cyclictest626304-21kworker/u8:1+events_freezable_power_00:15:191
57823899411,34cyclictest0-21swapper/123:40:261
57823899411,2cyclictest0-21swapper/119:30:011
578236994134,4cyclictest167350irq/118-8000000.ethernet-tx000:25:180
578236994128,9cyclictest0-21swapper/019:35:270
578236994128,9cyclictest0-21swapper/019:35:270
578236994126,9cyclictest594001-21latency_hist20:40:010
578241994030,5cyclictest628742-21grep00:00:332
578241994028,8cyclictest0-21swapper/223:50:292
578241994025,10cyclictest0-21swapper/222:45:272
578241994025,10cyclictest0-21swapper/222:45:272
57824199401,2cyclictest0-21swapper/222:20:022
57824199401,2cyclictest0-21swapper/222:20:012
578238994026,9cyclictest0-21swapper/121:45:291
578238994026,9cyclictest0-21swapper/121:45:291
578238994026,9cyclictest0-21swapper/100:10:291
578238994026,8cyclictest0-21swapper/100:25:301
578236994034,4cyclictest0-21swapper/022:20:120
578236994034,4cyclictest0-21swapper/022:20:120
578236994033,4cyclictest167350irq/118-8000000.ethernet-tx022:00:240
578236994032,4cyclictest0-21swapper/020:10:000
578236994029,8cyclictest600621-21sendmail21:20:000
57823699401,3cyclictest0-21swapper/021:25:120
578241993926,8cyclictest0-21swapper/200:30:192
578238993929,6cyclictest593760-21unixbench_multi20:35:291
578238993929,5cyclictest0-21swapper/122:50:291
578238993927,9cyclictest0-21swapper/123:55:301
578238993925,9cyclictest0-21swapper/123:30:281
578238993925,9cyclictest0-21swapper/120:20:271
578238993925,9cyclictest0-21swapper/119:40:281
578238993921,9cyclictest0-21swapper/100:20:301
57823699398,28cyclictest619429-21unixbench_singl23:05:300
57823699394,31cyclictest0-21swapper/023:25:190
578236993931,5cyclictest0-21swapper/020:45:300
578236993928,7cyclictest0-21swapper/000:00:340
57823699391,3cyclictest580589-21fschecks_count19:20:180
578241993830,5cyclictest0-21swapper/221:40:282
578241993829,6cyclictest625323-21grep23:40:322
578241993829,5cyclictest0-21swapper/223:55:272
578241993826,8cyclictest0-21swapper/221:15:312
578238993827,7cyclictest0-21swapper/122:00:011
578238993827,7cyclictest0-21swapper/122:00:011
578238993826,8cyclictest0-21swapper/123:10:291
578238993826,7cyclictest0-21swapper/121:10:291
578238993825,8cyclictest0-21swapper/100:05:291
578238993825,8cyclictest0-21swapper/100:05:291
578236993831,4cyclictest20850irq/208-8000000.ethernet20:55:190
578236993829,5cyclictest0-21swapper/023:00:250
578236993827,7cyclictest607444-21latency_hist22:00:020
578236993827,7cyclictest607444-21latency_hist22:00:010
57823699381,35cyclictest0-21swapper/021:40:150
578241993729,5cyclictest613381-21grep22:30:292
578241993727,7cyclictest0-21swapper/220:40:272
578241993727,7cyclictest0-21swapper/219:35:302
578241993727,7cyclictest0-21swapper/219:35:292
578241993725,8cyclictest0-21swapper/220:45:202
578238993726,7cyclictest0-21swapper/122:00:281
578238993724,8cyclictest0-21swapper/122:55:291
578238993719,9cyclictest0-21swapper/100:00:331
578238993717,12cyclictest0-21swapper/123:20:011
578236993730,5cyclictest0-21swapper/019:55:180
578236993730,4cyclictest20850irq/208-8000000.ethernet20:10:160
578236993729,4cyclictest0-21swapper/019:50:270
578236993729,3cyclictest0-21swapper/000:00:020
578236993727,7cyclictest0-21swapper/023:40:310
578236993726,8cyclictest0-21swapper/000:10:010
578236993726,8cyclictest0-21swapper/000:10:000
57823699371,34cyclictest0-21swapper/023:30:150
578241993628,4cyclictest311ktimers/222:05:112
578241993627,7cyclictest634775-21sendmail00:40:002
578241993626,5cyclictest0-21swapper/223:20:272
578241993624,8cyclictest0-21swapper/223:45:292
57823899365,24cyclictest0-21swapper/121:30:191
578238993624,8cyclictest0-21swapper/121:50:261
578238993624,8cyclictest0-21swapper/120:40:191
578238993620,9cyclictest0-21swapper/123:00:281
57823899361,28cyclictest622493-21kernelversion23:25:231
578236993629,4cyclictest15-21rcuc/020:40:190
578236993629,4cyclictest0-21swapper/022:45:200
578236993629,4cyclictest0-21swapper/022:45:200
57823699362,7cyclictest609845-21awk22:10:270
578236993626,6cyclictest581862-21grep19:25:280
578236993625,8cyclictest0-21swapper/023:15:000
578236993617,4cyclictest220882-1kworker/0:1H+mmc_complete23:20:000
578236993617,17cyclictest0-21swapper/000:20:160
578236993614,16cyclictest131ktimers/020:30:110
57823699361,33cyclictest0-21swapper/021:35:180
57823699361,2cyclictest0-21swapper/023:35:270
57823699361,2cyclictest0-21swapper/023:35:270
578241993528,4cyclictest0-21swapper/200:15:002
578241993526,4cyclictest0-21swapper/221:45:212
578241993526,4cyclictest0-21swapper/221:45:212
578241993525,7cyclictest0-21swapper/221:10:292
578241993525,7cyclictest0-21swapper/220:10:272
578241993524,8cyclictest0-21swapper/223:15:292
578241993515,15cyclictest167550irq/134-8000000.ethernet-tx221:39:162
57823899359,5cyclictest832-21systemd-network22:27:491
578238993529,3cyclictest590394-21sendmail20:20:001
578238993526,5cyclictest0-21swapper/122:10:291
578238993524,5cyclictest0-21swapper/120:50:281
578238993521,10cyclictest0-21swapper/120:45:301
578236993529,4cyclictest20850irq/208-8000000.ethernet22:40:240
578236993528,4cyclictest19750irq/27-20000000.i2c22:30:190
57823699352,7cyclictest631433-21wc00:20:000
57823699351,32cyclictest0-21swapper/022:25:140
57823699351,31cyclictest606347-21/usr/sbin/munin21:50:250
57823699351,20cyclictest220882-1kworker/0:1H+kblockd20:30:010
578241993424,7cyclictest617661-21grep22:55:302
578241993424,7cyclictest0-21swapper/220:20:002
578241993424,6cyclictest0-21swapper/222:50:262
578241993412,16cyclictest167550irq/134-8000000.ethernet-tx221:30:202
57823899347,21cyclictest611189-21cpu22:20:161
57823899347,21cyclictest611189-21cpu22:20:161
578238993428,3cyclictest597234-21cron21:00:001
578238993424,6cyclictest0-21swapper/121:30:001
578238993423,8cyclictest0-21swapper/122:45:281
578238993423,8cyclictest0-21swapper/122:45:281
578238993422,7cyclictest0-21swapper/123:05:301
578238993420,10cyclictest0-21swapper/119:30:301
57823899341,27cyclictest0-21swapper/123:35:171
57823899341,27cyclictest0-21swapper/123:35:171
578236993428,4cyclictest20850irq/208-8000000.ethernet22:15:110
578236993428,4cyclictest20850irq/208-8000000.ethernet21:15:000
578236993428,4cyclictest0-21swapper/023:50:300
578236993427,4cyclictest20850irq/208-8000000.ethernet22:55:170
578236993426,4cyclictest0-21swapper/019:45:160
57823699342,4cyclictest588040-21latency_hist20:05:010
57823699342,4cyclictest588040-21latency_hist20:05:010
578236993422,8cyclictest0-21swapper/000:10:190
578241993325,4cyclictest0-21swapper/220:55:202
578241993324,4cyclictest0-21swapper/222:10:182
578241993322,6cyclictest0-21swapper/223:05:012
57824199331,26cyclictest581373-21sshd19:25:162
578238993319,10cyclictest0-21swapper/121:20:001
57823699335,26cyclictest592377-21kworker/u8:1+events_power_efficient21:00:150
578236993327,4cyclictest19750irq/27-20000000.i2c23:20:280
57823699332,28cyclictest605119-21df_inode21:45:170
57823699332,28cyclictest605119-21df_inode21:45:170
578236993314,17cyclictest0-21swapper/019:34:190
57823699331,2cyclictest0-21swapper/021:32:020
57823699331,28cyclictest598893-21grep21:05:300
578241993224,4cyclictest0-21swapper/223:30:012
578241993223,6cyclictest590609-21/usr/sbin/munin20:20:242
57823699321,2cyclictest0-21swapper/019:40:110
578241993122,6cyclictest0-21swapper/222:40:282
578241993121,8cyclictest0-21swapper/219:30:282
578241993121,7cyclictest0-21swapper/220:50:302
578241993120,7cyclictest598894-21grep21:05:302
578241993119,8cyclictest0-21swapper/222:25:202
578238993120,7cyclictest0-21swapper/120:00:281
578238993120,7cyclictest0-21swapper/120:00:281
578241993023,4cyclictest605891-21/usr/sbin/munin21:50:152
578241993016,10cyclictest0-21swapper/220:30:192
57824199301,5cyclictest587301-21diskstats20:00:162
57824199301,5cyclictest587301-21diskstats20:00:162
578241993011,13cyclictest167550irq/134-8000000.ethernet-tx219:50:242
57824199297,2cyclictest0-21swapper/220:00:002
57824199292,3cyclictest623944-21df23:35:182
57824199292,3cyclictest623944-21df23:35:172
578241992922,4cyclictest0-21swapper/219:40:282
578241992921,4cyclictest0-21swapper/220:05:222
578241992919,7cyclictest0-21swapper/223:05:202
57824199291,26cyclictest613722-21df22:35:172
57824199291,23cyclictest0-21swapper/200:25:092
57823899291,25cyclictest592432-21grep20:30:161
578236992922,4cyclictest167350irq/118-8000000.ethernet-tx022:50:220
57824199271,3cyclictest0-21swapper/200:05:222
57824199271,3cyclictest0-21swapper/200:05:222
57823699262,15cyclictest578289-21latency_hist19:10:000
57823899208,10cyclictest0-21swapper/119:10:001
578241991810,6cyclictest578296-21sed19:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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