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2026-09-10 - 16:06

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 792 highest latencies:
System rackeslot6s.osadl.org (updated Thu Sep 10, 2026 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2899822997642,29cyclictest2918725-21munin-plugin-st09:00:012
2899822997641,30cyclictest2919577-21munin-plugin-st09:05:002
2899822997235,32cyclictest0-21swapper/208:40:302
289981999601,43cyclictest0-21swapper/110:15:011
2899817996030,25cyclictest2939503-21grep11:00:190
2899822995719,21cyclictest880-21avahi-daemon11:50:182
2899822995719,21cyclictest880-21avahi-daemon11:50:182
2899817995725,28cyclictest0-21swapper/010:10:260
2899817995619,33cyclictest0-21swapper/007:15:250
2899817995619,33cyclictest0-21swapper/007:15:250
289981999555,41cyclictest2922954-21apt-get09:25:001
2899817995545,4cyclictest2900668-21latency_hist07:15:000
2899817995523,28cyclictest0-21swapper/009:40:270
2899817995523,28cyclictest0-21swapper/009:40:270
2899819995345,5cyclictest2922104-21grep09:19:591
2899822995245,4cyclictest2933184-21munin-plugin-st10:25:012
2899822995245,4cyclictest2933184-21munin-plugin-st10:25:012
289981999526,35cyclictest22-21rcuc/110:55:011
2899819995237,10cyclictest0-21swapper/107:44:591
289981999513,35cyclictest22-21rcuc/107:30:011
2899819995133,10cyclictest2904178-21grep07:30:281
2899817995144,4cyclictest167350irq/118-8000000.ethernet-tx011:15:250
289981799511,29cyclictest0-21swapper/012:25:000
2899817995112,27cyclictest2936628-21kworker/u8:5+events_power_efficient10:50:020
2899822994942,4cyclictest2928932-21cron10:00:012
289981999492,21cyclictest2717854-1kworker/1:2H+kblockd10:40:101
289981799497,33cyclictest0-21swapper/012:15:010
289981799491,33cyclictest0-21swapper/011:40:000
289981999488,19cyclictest231ktimers/109:50:011
2899819994833,10cyclictest0-21swapper/112:15:001
2899819994832,11cyclictest0-21swapper/109:10:231
2899817994840,5cyclictest20850irq/208-8000000.ethernet08:25:260
2899817994837,6cyclictest2918428-21phc2sys-jitter08:55:250
289981799471,2cyclictest0-21swapper/009:20:010
289981799471,15cyclictest0-21swapper/007:55:000
2899817994639,4cyclictest167350irq/118-8000000.ethernet-tx007:30:380
289981799462,39cyclictest0-21swapper/009:25:010
2899819994528,12cyclictest0-21swapper/107:20:011
2899819994528,12cyclictest0-21swapper/107:20:011
289981999451,9cyclictest0-21swapper/109:50:011
2899817994538,4cyclictest167350irq/118-8000000.ethernet-tx009:30:230
2899817994538,4cyclictest167350irq/118-8000000.ethernet-tx009:00:250
2899817994537,5cyclictest0-21swapper/008:05:200
289981799452,4cyclictest2903393-21sed07:25:270
289981799451,9cyclictest2911769-21/usr/sbin/munin08:15:270
289981799451,29cyclictest0-21swapper/008:15:010
2899819994430,9cyclictest0-21swapper/107:55:271
2899819994430,10cyclictest231ktimers/109:25:101
2899817994440,2cyclictest0-21swapper/012:35:200
2899817994429,10cyclictest2916593-21fschecks_time08:45:190
289981799442,5cyclictest2929360-21perl10:00:210
289981799441,19cyclictest0-21swapper/012:20:010
2899822994331,8cyclictest0-21swapper/209:25:252
289981999431,15cyclictest0-21swapper/108:05:021
2899817994336,4cyclictest20850irq/208-8000000.ethernet08:20:190
2899817994336,4cyclictest167350irq/118-8000000.ethernet-tx010:35:150
2899817994336,4cyclictest0-21swapper/009:45:220
2899822994234,5cyclictest2951834-21munin-plugin-st12:15:002
2899819994235,4cyclictest2935708-21sendmail10:40:011
2899819994233,5cyclictest2928946-21munin-plugin-st10:00:001
2899819994232,6cyclictest2953432-21grep12:20:281
2899819994229,9cyclictest2913562-21grep08:25:291
289981999421,2cyclictest0-21swapper/112:30:011
2899817994228,10cyclictest0-21swapper/012:25:290
289981799421,4cyclictest2948122-21sshd11:50:240
289981799421,4cyclictest2948122-21sshd11:50:240
289981799421,37cyclictest1660-21snmpd10:25:160
289981799421,32cyclictest0-21swapper/007:55:010
2899819994133,4cyclictest167450irq/126-8000000.ethernet-tx112:05:241
2899819994126,7cyclictest0-21swapper/111:10:301
2899819994123,10cyclictest0-21swapper/108:30:271
289981799411,3cyclictest2904897-21ptp4l07:35:260
289981799411,34cyclictest0-21swapper/007:25:010
2899819994031,5cyclictest2947576-21grep11:45:281
2899819994031,5cyclictest0-21swapper/112:20:001
2899819994029,7cyclictest0-21swapper/110:55:281
2899819994024,11cyclictest231ktimers/108:35:131
289981999401,29cyclictest14-21rcu_preempt11:25:221
2899817994035,3cyclictest167350irq/118-8000000.ethernet-tx007:40:190
2899817994033,4cyclictest0-21swapper/008:50:280
2899817994032,4cyclictest0-21swapper/009:50:250
2899817994022,16cyclictest2948979-21/usr/sbin/munin11:55:260
289981799401,8cyclictest0-21swapper/010:45:010
289981799401,2cyclictest0-21swapper/009:05:010
2899822993932,4cyclictest167550irq/134-8000000.ethernet-tx209:15:112
2899822993930,4cyclictest0-21swapper/212:20:202
2899822993927,8cyclictest0-21swapper/210:25:272
2899822993925,10cyclictest1660-21snmpd09:45:232
2899822993924,10cyclictest0-21swapper/209:05:202
2899819993931,4cyclictest2956043-21cron12:40:001
2899819993929,5cyclictest2902609-21munin-plugin-st07:25:001
2899819993925,9cyclictest0-21swapper/107:10:261
2899819993925,8cyclictest0-21swapper/108:20:271
2899819993925,10cyclictest0-21swapper/112:05:001
289981999391,32cyclictest0-21swapper/111:00:221
2899817993932,4cyclictest167350irq/118-8000000.ethernet-tx011:20:240
289981799392,8cyclictest0-21swapper/011:35:010
289981799391,3cyclictest0-21swapper/011:25:170
289981799391,36cyclictest2947681-21sed11:50:010
289981799391,36cyclictest0-21swapper/009:10:220
289981799391,2cyclictest0-21swapper/012:30:010
289981799391,2cyclictest0-21swapper/012:30:010
289982299384,25cyclictest2931680-21/usr/sbin/munin10:15:192
2899822993826,10cyclictest311ktimers/210:50:162
2899822993824,10cyclictest0-21swapper/212:25:272
2899819993830,4cyclictest0-21swapper/109:00:011
2899819993827,5cyclictest0-21swapper/112:30:201
2899819993827,5cyclictest0-21swapper/112:30:201
2899817993832,4cyclictest0-21swapper/011:10:270
289981799381,35cyclictest0-21swapper/010:10:010
289981799381,35cyclictest0-21swapper/009:55:170
289981799381,35cyclictest0-21swapper/008:35:250
289981799381,35cyclictest0-21swapper/007:49:540
2899822993725,8cyclictest0-21swapper/210:45:282
289982299371,29cyclictest2950095-21unixbench_singl12:00:292
2899819993726,7cyclictest0-21swapper/108:15:281
2899819993724,8cyclictest0-21swapper/110:15:291
289981999371,9cyclictest0-21swapper/107:55:001
289981999371,29cyclictest1653-21lldpd08:10:271
289981799373,4cyclictest2949607-21tune2fs12:00:190
289981799373,31cyclictest0-21swapper/011:05:210
2899817993731,4cyclictest20850irq/208-8000000.ethernet09:35:210
289981799371,4cyclictest0-21swapper/010:55:000
289981799371,3cyclictest2946141-21apt-get11:40:110
289981799371,34cyclictest0-21swapper/010:24:430
289981799371,34cyclictest0-21swapper/010:24:430
2899822993626,6cyclictest2906777-21grep07:45:302
2899822993624,8cyclictest2916929-21grep08:45:272
2899822993621,8cyclictest2931481-21munin-plugin-st10:15:012
289982299361,2cyclictest0-21swapper/207:15:012
2899822993611,12cyclictest2935698-21apt-get10:40:022
289981999364,18cyclictest231ktimers/111:05:101
289981999362,5cyclictest2937150-21meminfo10:45:241
289981999361,2cyclictest0-21swapper/111:40:011
289981999361,29cyclictest0-21swapper/110:25:191
289981799361,7cyclictest2950684-21phc2sys12:05:260
289981799361,33cyclictest0-21swapper/008:43:270
2899822993528,4cyclictest167550irq/134-8000000.ethernet-tx210:05:182
2899822993527,4cyclictest0-21swapper/207:30:272
2899822993525,6cyclictest0-21swapper/210:30:272
2899822993521,8cyclictest0-21swapper/212:39:592
2899822993521,7cyclictest0-21swapper/209:40:282
2899822993521,7cyclictest0-21swapper/209:40:272
2899822993513,17cyclictest2950351-21/usr/sbin/munin12:05:192
2899819993525,5cyclictest0-21swapper/110:30:281
2899819993518,12cyclictest0-21swapper/110:10:021
2899819993518,10cyclictest2925523-21grep09:35:261
2899817993530,2cyclictest0-21swapper/008:05:010
289982299344,17cyclictest2917240-21/usr/sbin/munin08:50:202
2899822993426,5cyclictest0-21swapper/208:10:292
2899822993426,4cyclictest2949245-21head11:55:282
2899822993424,7cyclictest0-21swapper/207:50:282
2899822993424,6cyclictest0-21swapper/208:05:292
289982299341,22cyclictest0-21swapper/208:20:002
289981999346,21cyclictest24-21ksoftirqd/109:45:011
289981999346,21cyclictest24-21ksoftirqd/109:45:011
289981999343,20cyclictest22-21rcuc/110:20:121
289981999343,20cyclictest22-21rcuc/110:20:121
2899819993425,5cyclictest0-21swapper/108:40:281
2899819993425,5cyclictest0-21swapper/108:05:291
2899819993423,7cyclictest0-21swapper/107:35:271
2899819993417,13cyclictest0-21swapper/109:05:011
2899817993428,4cyclictest20850irq/208-8000000.ethernet08:30:240
2899817993427,4cyclictest0-21swapper/010:30:130
2899817993423,6cyclictest2923792-21grep09:25:270
289981799341,31cyclictest0-21swapper/010:16:510
289982299335,13cyclictest2943600-21/usr/sbin/munin11:25:182
2899822993325,4cyclictest0-21swapper/211:15:282
2899822993323,7cyclictest0-21swapper/209:35:262
2899819993327,3cyclictest167450irq/126-8000000.ethernet-tx107:45:111
2899819993324,4cyclictest0-21swapper/108:50:301
2899819993322,7cyclictest0-21swapper/109:05:281
2899819993321,8cyclictest0-21swapper/111:55:271
2899819993321,8cyclictest0-21swapper/111:20:271
289981799336,25cyclictest0-21swapper/007:10:010
2899817993324,6cyclictest2939060-21grep10:55:260
2899822993224,5cyclictest0-21swapper/208:20:262
2899822993217,10cyclictest0-21swapper/209:10:272
289982299321,26cyclictest0-21swapper/210:55:102
289982299321,26cyclictest0-21swapper/209:20:042
289982299321,26cyclictest0-21swapper/207:22:392
289981999322,28cyclictest0-21swapper/110:00:271
2899819993221,7cyclictest2942474-21grep11:15:291
289981999321,25cyclictest0-21swapper/111:50:241
289981999321,25cyclictest0-21swapper/111:50:241
289982299318,15cyclictest2954569-21/usr/sbin/munin12:30:192
289982299318,15cyclictest2954569-21/usr/sbin/munin12:30:192
2899822993123,5cyclictest2924084-21/usr/sbin/munin09:30:212
2899822993122,5cyclictest0-21swapper/210:40:062
2899822993120,7cyclictest0-21swapper/207:35:262
2899822993119,8cyclictest0-21swapper/211:30:292
2899822993024,4cyclictest2943353-21grep11:20:282
2899822993024,4cyclictest0-21swapper/211:10:182
2899822993022,6cyclictest2913863-21/usr/sbin/munin08:30:272
2899822993022,4cyclictest0-21swapper/211:45:252
2899822993020,7cyclictest0-21swapper/208:25:282
2899822993017,9cyclictest0-21swapper/207:40:242
2899822993015,11cyclictest0-21swapper/208:00:302
2899822992923,3cyclictest2901750-21sh07:20:012
2899822992923,3cyclictest2901750-21sh07:20:012
2899822992921,5cyclictest311ktimers/207:25:272
2899819992923,4cyclictest2924716-21cron09:35:011
2899819992921,4cyclictest0-21swapper/111:30:301
2899819992917,8cyclictest2946777-21apt11:45:011
2899822992821,5cyclictest2946197-21df11:40:152
2899822992821,4cyclictest0-21swapper/208:00:012
2899822992819,6cyclictest2952613-21grep12:15:262
2899822992819,6cyclictest0-21swapper/208:35:282
2899822992813,8cyclictest0-21swapper/211:05:022
289982299281,25cyclictest2927460-21/usr/sbin/munin09:50:252
2899819992714,10cyclictest231ktimers/108:45:111
2899822992618,5cyclictest0-21swapper/211:05:272
2899822992614,8cyclictest0-21swapper/211:35:202
2899822992516,5cyclictest0-21swapper/210:00:162
289981999203,9cyclictest2899907-21cat07:10:011
2899822991914,3cyclictest2899780-21latency_hist07:10:022
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