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2026-09-14 - 19:22

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 100 highest latencies:
System rackeslot6s.osadl.org (updated Mon Sep 14, 2026 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2230881998376,5cyclictest311ktimers/207:55:202
2230880998038,33cyclictest2280363-21sendmail12:00:001
2230880997535,8cyclictest0-21swapper/112:10:271
2230883997435,28cyclictest38-21rcuc/307:55:023
2230883997435,28cyclictest38-21rcuc/307:55:013
2230881996547,12cyclictest311ktimers/211:05:142
2230877995511,4cyclictest2280354-21apt-get12:00:010
2230881995247,3cyclictest311ktimers/210:00:172
2230877995239,9cyclictest2232813-21sendmail07:20:000
223087799511,4cyclictest15-21rcuc/011:00:270
2230877994942,4cyclictest167350irq/118-8000000.ethernet-tx010:10:150
223088199485,16cyclictest30-21rcuc/212:00:022
2230877994840,4cyclictest167350irq/118-8000000.ethernet-tx011:15:300
2230881994738,5cyclictest2270157-21sendmail11:00:002
2230877994740,4cyclictest167350irq/118-8000000.ethernet-tx010:40:120
2230877994739,4cyclictest167350irq/118-8000000.ethernet-tx009:45:020
2230877994730,13cyclictest131ktimers/010:05:160
223087799472,8cyclictest2241531-21/usr/sbin/munin08:10:180
2230877994714,29cyclictest0-21swapper/011:00:000
2230881994637,5cyclictest2242892-21grep08:15:292
2230881994626,14cyclictest311ktimers/210:50:102
2230880994634,8cyclictest0-21swapper/110:10:001
223087799465,38cyclictest0-21swapper/010:30:240
2230877994639,4cyclictest167350irq/118-8000000.ethernet-tx007:24:450
223087799461,42cyclictest2277807-21sed11:45:010
223087799461,12cyclictest0-21swapper/007:45:020
2230881994528,12cyclictest311ktimers/210:10:112
2230881994528,11cyclictest311ktimers/209:25:112
2230881994517,12cyclictest311ktimers/209:10:112
2230881994517,12cyclictest311ktimers/209:10:112
2230880994534,7cyclictest0-21swapper/110:30:281
2230880994533,7cyclictest2262512-21grep10:10:271
2230880994533,10cyclictest0-21swapper/108:40:011
2230877994540,2cyclictest0-21swapper/008:35:020
2230877994538,4cyclictest20650irq/252-8000000.ethernet08:55:000
2230877994538,4cyclictest167350irq/118-8000000.ethernet-tx008:05:260
2230877994536,5cyclictest20850irq/208-8000000.ethernet09:00:000
2230877994536,5cyclictest20850irq/208-8000000.ethernet09:00:000
2230881994429,9cyclictest0-21swapper/211:30:282
2230880994432,8cyclictest0-21swapper/108:20:281
2230880994432,8cyclictest0-21swapper/107:55:281
2230880994431,8cyclictest0-21swapper/112:30:271
2230877994434,5cyclictest2255478-21cut09:30:260
223087799442,4cyclictest0-21swapper/011:10:180
223087799441,41cyclictest0-21swapper/012:25:140
2230881994324,14cyclictest311ktimers/210:20:112
2230880994329,10cyclictest0-21swapper/112:00:281
2230877994336,3cyclictest2257082-21phc2sys09:40:250
2230877994335,5cyclictest0-21swapper/007:25:140
2230877994333,5cyclictest20850irq/208-8000000.ethernet10:35:300
223087799432,5cyclictest2251753-21diskstats09:10:190
223087799432,5cyclictest2251753-21diskstats09:10:190
223087799432,4cyclictest2240418-21latency_hist08:05:000
223087799431,5cyclictest2256346-21grep09:35:270
223087799431,3cyclictest0-21swapper/009:10:010
2230880994227,10cyclictest2249782-21sendmail09:00:011
2230880994227,10cyclictest2249782-21sendmail09:00:001
223087799426,3cyclictest0-21swapper/011:55:000
2230877994237,2cyclictest0-21swapper/011:35:310
2230877994235,4cyclictest167350irq/118-8000000.ethernet-tx008:25:030
2230877994235,4cyclictest0-21swapper/008:20:160
223087799421,39cyclictest0-21swapper/012:35:220
2230881994131,7cyclictest2274378-21munin-plugin-st11:24:592
2230881994130,6cyclictest0-21swapper/211:40:002
2230881994128,9cyclictest0-21swapper/210:30:272
2230881994125,8cyclictest2260008-21sendmail09:59:592
2230881994123,14cyclictest311ktimers/207:45:122
2230880994134,4cyclictest14-21rcu_preempt11:05:201
2230880994127,10cyclictest0-21swapper/111:00:281
2230880994126,9cyclictest0-21swapper/112:05:281
2230880994126,11cyclictest0-21swapper/108:50:271
2230877994134,4cyclictest0-21swapper/011:45:130
223087799411,37cyclictest2268797-21fschecks_time10:50:180
2230881994029,7cyclictest0-21swapper/207:50:282
2230881994029,7cyclictest0-21swapper/207:50:282
2230881994026,9cyclictest0-21swapper/210:35:312
2230881994023,12cyclictest311ktimers/208:50:122
2230880994026,9cyclictest0-21swapper/107:10:291
2230877994033,4cyclictest0-21swapper/007:55:000
2230877994033,4cyclictest0-21swapper/007:55:000
2230877994032,4cyclictest2276115-21cat11:35:020
2230877994029,7cyclictest2260775-21grep10:00:260
223087799402,36cyclictest0-21swapper/009:00:170
223087799401,37cyclictest0-21swapper/007:35:180
223087799401,34cyclictest0-21swapper/012:10:000
223087799401,10cyclictest0-21swapper/008:50:010
223088199398,26cyclictest0-21swapper/209:31:192
2230881993931,5cyclictest2283829-21run-parts12:20:002
2230881993930,5cyclictest0-21swapper/212:05:282
2230881993923,9cyclictest0-21swapper/211:25:192
2230881993919,9cyclictest32-21ksoftirqd/209:50:002
2230880993927,8cyclictest0-21swapper/111:35:291
2230880993926,9cyclictest0-21swapper/111:15:301
2230880993926,8cyclictest0-21swapper/110:25:291
2230877993934,3cyclictest20850irq/208-8000000.ethernet08:15:180
2230877993933,4cyclictest0-21swapper/007:55:110
2230877993933,3cyclictest167350irq/118-8000000.ethernet-tx009:50:110
2230877993933,3cyclictest167350irq/118-8000000.ethernet-tx009:50:100
2230877993932,3cyclictest167350irq/118-8000000.ethernet-tx011:20:180
2230877993931,5cyclictest0-21swapper/012:00:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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