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2025-12-20 - 16:41

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 Sat Dec 20, 2025 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
212956996635,28cyclictest218042-21phc2sys07:35:260
212961995644,6cyclictest242949-21grep10:00:282
212961995447,4cyclictest251491-21munin-plugin-st10:55:002
212961995421,23cyclictest30-21rcuc/211:00:002
212959995340,7cyclictest216505-21grep07:25:331
212959995338,9cyclictest0-21swapper/107:35:021
212961995241,8cyclictest30-21rcuc/212:10:192
21296199514,16cyclictest0-21swapper/210:50:022
21295699511,30cyclictest0-21swapper/010:50:010
212961995037,8cyclictest0-21swapper/210:09:592
212961995032,12cyclictest311ktimers/208:35:172
212956995034,11cyclictest0-21swapper/009:45:290
21295699501,43cyclictest0-21swapper/011:45:000
21295699501,20cyclictest0-21swapper/011:05:010
212959994938,6cyclictest235346-21run-parts09:20:001
21295699496,35cyclictest12-21ksoftirqd/007:10:010
212961994835,9cyclictest311ktimers/207:35:142
21295699481,10cyclictest0-21swapper/010:20:020
212961994735,9cyclictest0-21swapper/209:05:002
212961994730,12cyclictest311ktimers/208:20:132
212961994717,10cyclictest311ktimers/210:30:022
212959994738,5cyclictest266807-21grep12:20:321
212956994732,11cyclictest0-21swapper/007:10:290
212956994710,5cyclictest236200-21apt-get09:25:000
212961994635,7cyclictest0-21swapper/209:45:292
212961994538,5cyclictest246435-21munin-plugin-st10:25:002
212961994529,11cyclictest311ktimers/208:10:142
212961994529,11cyclictest311ktimers/208:10:142
212959994536,4cyclictest221721-21cron08:00:011
21295699454,39cyclictest0-21swapper/011:20:290
212956994532,8cyclictest0-21swapper/007:25:320
212956994531,8cyclictest0-21swapper/009:35:270
212956994528,11cyclictest131ktimers/009:40:140
212956994528,11cyclictest131ktimers/009:40:140
21295699451,38cyclictest225327-21cat08:20:000
212956994511,32cyclictest0-21swapper/008:25:000
21295999443,33cyclictest260779-21unixbench_multi11:45:301
21295999443,33cyclictest260779-21unixbench_multi11:45:301
212959994430,8cyclictest0-21swapper/109:25:001
212956994434,8cyclictest234501-21munin-plugin-st09:15:000
212956994430,10cyclictest0-21swapper/007:55:290
212956994429,11cyclictest0-21swapper/008:25:290
212961994339,2cyclictest0-21swapper/210:20:022
212961994335,4cyclictest268580-21munin-plugin-st12:35:002
212961994332,5cyclictest0-21swapper/208:50:302
21296199431,12cyclictest2129531cyclictest10:10:102
212959994336,4cyclictest242186-21cron10:00:011
212959994336,4cyclictest242186-21cron10:00:011
212959994332,5cyclictest0-21swapper/108:05:291
212956994335,4cyclictest251677-21apt-get10:55:010
212956994331,9cyclictest0-21swapper/008:10:300
212956994331,9cyclictest0-21swapper/008:10:300
212956994331,8cyclictest0-21swapper/010:25:280
212956994330,9cyclictest220976-21wc07:55:010
212956994328,9cyclictest0-21swapper/010:40:300
212956994322,15cyclictest131ktimers/007:45:160
21295699431,40cyclictest0-21swapper/007:40:230
21295699431,40cyclictest0-21swapper/007:15:020
212961994232,7cyclictest263470-21unixbench_singl12:00:272
21295999422,32cyclictest0-21swapper/109:50:231
21295999421,4cyclictest237912-21grep09:30:301
21295999421,33cyclictest227632-21unixbench_multi08:30:301
21295999421,21cyclictest0-21swapper/111:25:011
212956994232,7cyclictest0-21swapper/012:35:130
212956994230,8cyclictest0-21swapper/010:00:290
21295699421,38cyclictest0-21swapper/008:35:230
212961994132,5cyclictest0-21swapper/209:40:012
212961994132,4cyclictest0-21swapper/211:50:002
212961994132,4cyclictest0-21swapper/211:50:002
212961994129,8cyclictest223340-21grep08:05:282
212959994129,8cyclictest0-21swapper/107:20:291
212959994129,8cyclictest0-21swapper/107:20:291
21295999412,4cyclictest254011-21grep11:05:291
21295999411,5cyclictest0-21swapper/111:55:011
212959994111,10cyclictest251487-21apt-get10:55:021
212956994134,4cyclictest20850irq/208-8000000.ethernet11:25:220
212956994134,3cyclictest12-21ksoftirqd/009:55:120
212956994134,3cyclictest12-21ksoftirqd/009:55:120
212956994130,7cyclictest0-21swapper/011:35:290
212956994128,9cyclictest0-21swapper/008:30:300
212956994128,8cyclictest0-21swapper/010:35:290
212956994125,12cyclictest131ktimers/008:40:130
212956994119,20cyclictest0-21swapper/011:15:010
212961994027,8cyclictest0-21swapper/207:25:332
212961994026,8cyclictest248961-21sendmail10:40:002
212961994020,13cyclictest32-21ksoftirqd/207:50:002
212961994014,15cyclictest311ktimers/208:40:142
212959994031,5cyclictest0-21swapper/110:15:291
21295999402,31cyclictest0-21swapper/110:20:291
212959994022,10cyclictest0-21swapper/108:45:011
21295999401,30cyclictest268515-21grep12:30:311
212956994033,4cyclictest268579-21munin-plugin-st12:34:590
212956994033,2cyclictest0-21swapper/012:00:280
212956994029,8cyclictest0-21swapper/010:55:310
21295699402,35cyclictest241248-21unixbench_multi09:50:320
21295699401,4cyclictest0-21swapper/010:15:010
21295699401,3cyclictest255336-21perl11:15:220
21295699401,37cyclictest0-21swapper/008:05:180
21295699401,32cyclictest274-21systemd-journal11:50:020
212961993930,7cyclictest212953-21cyclictest10:30:142
212961993930,4cyclictest0-21swapper/209:05:292
212961993929,6cyclictest311ktimers/209:25:132
212961993928,7cyclictest214823-21grep07:15:292
212961993927,9cyclictest0-21swapper/212:05:262
212961993927,8cyclictest231918-21grep08:55:292
212961993927,8cyclictest0-21swapper/209:25:012
212959993932,4cyclictest167450irq/126-8000000.ethernet-tx110:40:001
212959993922,11cyclictest0-21swapper/108:20:001
21295999391,30cyclictest258282-21head11:30:281
212956993933,3cyclictest0-21swapper/011:45:130
212956993933,3cyclictest0-21swapper/011:45:120
212956993932,4cyclictest20650irq/252-8000000.ethernet08:50:220
212956993928,8cyclictest0-21swapper/010:20:310
212956993928,8cyclictest0-21swapper/007:30:310
212956993928,7cyclictest0-21swapper/011:30:290
212956993927,8cyclictest0-21swapper/012:15:290
212956993926,9cyclictest0-21swapper/009:25:290
212956993926,8cyclictest0-21swapper/008:45:290
212956993925,10cyclictest0-21swapper/012:05:270
21295699392,4cyclictest267399-21memory12:25:260
21295699391,36cyclictest0-21swapper/009:15:130
212961993831,4cyclictest0-21swapper/210:45:002
212961993824,9cyclictest311ktimers/211:15:142
21296199382,3cyclictest0-21swapper/212:00:012
21295999381,32cyclictest240452-21grep09:45:291
212956993831,4cyclictest20650irq/252-8000000.ethernet09:00:180
212956993827,8cyclictest0-21swapper/008:00:300
212956993826,8cyclictest0-21swapper/008:55:300
212956993825,10cyclictest0-21swapper/010:05:300
21295699381,34cyclictest0-21swapper/012:20:190
212961993730,4cyclictest167550irq/134-8000000.ethernet-tx211:35:172
212961993728,5cyclictest0-21swapper/208:00:222
212961993717,17cyclictest0-21swapper/209:35:022
21296199371,33cyclictest2560191/usr/sbin/munin11:20:192
212959993728,5cyclictest0-21swapper/108:10:181
212959993728,5cyclictest0-21swapper/108:10:181
212959993724,8cyclictest0-21swapper/111:15:281
212956993732,2cyclictest0-21swapper/012:10:260
212956993730,4cyclictest20650irq/252-8000000.ethernet10:30:180
21295699371,31cyclictest0-21swapper/007:20:010
21295699371,31cyclictest0-21swapper/007:20:010
212961993627,6cyclictest0-21swapper/212:30:022
212961993627,5cyclictest241254-21unixbench_multi09:50:312
212961993627,5cyclictest0-21swapper/207:15:002
212961993624,9cyclictest311ktimers/210:55:152
212959993625,7cyclictest0-21swapper/108:45:291
21295999361,4cyclictest0-21swapper/107:55:011
212956993630,4cyclictest20850irq/208-8000000.ethernet11:05:190
212956993624,9cyclictest0-21swapper/009:35:000
21295699361,33cyclictest0-21swapper/011:55:140
212961993528,5cyclictest14-21rcu_preempt09:55:252
212961993528,5cyclictest14-21rcu_preempt09:55:252
212961993524,5cyclictest0-21swapper/207:40:272
212961993523,8cyclictest221628-21grep07:55:282
212961993523,8cyclictest0-21swapper/212:35:292
212959993529,3cyclictest220009-21grep07:45:301
212959993526,4cyclictest0-21swapper/110:05:211
212959993524,6cyclictest269322-21unixbench_multi12:35:311
212959993522,5cyclictest0-21swapper/112:05:271
21295999351,30cyclictest251383-21unixbench_multi10:50:291
212959993511,13cyclictest258542-21/usr/sbin/munin11:35:211
212961993428,4cyclictest167550irq/134-8000000.ethernet-tx211:10:452
212961993424,6cyclictest0-21swapper/212:15:272
21296199341,10cyclictest0-21swapper/211:50:232
21295999346,11cyclictest242408-21/usr/sbin/munin10:00:191
212959993425,5cyclictest0-21swapper/107:20:001
212959993423,5cyclictest231925-21unixbench_singl08:55:301
212959993421,8cyclictest0-21swapper/111:10:281
212961993322,8cyclictest258322-21sshd11:31:172
212961993318,11cyclictest311ktimers/208:15:122
21296199331,2cyclictest0-21swapper/211:10:012
212959993323,5cyclictest0-21swapper/112:05:011
212959993322,6cyclictest0-21swapper/107:40:221
212959993322,5cyclictest0-21swapper/112:10:201
21295999331,29cyclictest237025-21unixbench_multi09:25:291
21295999331,29cyclictest232715-21tail09:00:271
212961993224,5cyclictest0-21swapper/209:45:002
212961993224,5cyclictest0-21swapper/209:45:002
212961993221,8cyclictest0-21swapper/208:30:012
212961993217,10cyclictest0-21swapper/207:35:012
212959993222,7cyclictest0-21swapper/110:25:291
212959993220,9cyclictest0-21swapper/107:35:211
212959993220,8cyclictest0-21swapper/109:10:291
212959993219,9cyclictest0-21swapper/108:00:281
212956993225,5cyclictest233629-21unixbench_singl09:05:300
212961993120,8cyclictest0-21swapper/212:25:012
212961993114,5cyclictest226884-21kworker/u8:0+events_power_efficient08:35:022
212961993110,15cyclictest167550irq/134-8000000.ethernet-tx207:20:242
212961993110,15cyclictest167550irq/134-8000000.ethernet-tx207:20:242
212959993126,2cyclictest0-21swapper/110:45:281
212959993124,4cyclictest167450irq/126-8000000.ethernet-tx112:25:151
212959993124,4cyclictest0-21swapper/111:05:011
212959993121,8cyclictest231ktimers/107:10:261
212959993121,5cyclictest0-21swapper/110:30:291
212961993021,4cyclictest0-21swapper/209:10:222
212961993020,6cyclictest30-21rcuc/208:45:262
212961993020,5cyclictest0-21swapper/207:10:012
212959993020,4cyclictest0-21swapper/112:00:011
212961992921,5cyclictest30-21rcuc/207:50:232
212961992920,7cyclictest30-21rcuc/211:40:152
212961992917,6cyclictest235284-21grep09:15:292
212959992918,5cyclictest0-21swapper/109:40:201
212959992918,5cyclictest0-21swapper/109:40:201
212961992819,5cyclictest0-21swapper/211:25:302
21295999289,11cyclictest0-21swapper/108:30:021
212959992824,2cyclictest0-21swapper/110:40:311
21295999282,22cyclictest274-21systemd-journal08:24:591
212959992821,4cyclictest231097-21dropbear08:50:331
212959992820,4cyclictest0-21swapper/112:15:281
212959992819,5cyclictest167450irq/126-8000000.ethernet-tx108:35:281
212959992819,5cyclictest0-21swapper/110:10:161
212959992719,4cyclictest0-21swapper/111:25:271
212959992419,3cyclictest238172-21/usr/sbin/munin09:35:221
212959992417,5cyclictest0-21swapper/109:07:421
212959992214,5cyclictest0-21swapper/111:40:241
212959991912,5cyclictest231ktimers/107:10:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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