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2026-05-06 - 18:15

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 Wed May 06, 2026 12:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
410444699919,39cyclictest4159101-21apt-get12:30:010
410444699836,6cyclictest4144660-21apt-get11:05:010
4104446997943,29cyclictest20650irq/252-8000000.ethernet12:25:010
4104446997943,29cyclictest20650irq/252-8000000.ethernet12:25:010
4104446997865,4cyclictest0-21swapper/012:35:190
4104446997738,33cyclictest167350irq/118-8000000.ethernet-tx008:20:010
410444699766,4cyclictest4144660-21apt-get11:05:010
4104447997213,3cyclictest4149791-21kworker/u8:0+events_power_efficient12:10:011
410444699724,2cyclictest0-21swapper/010:10:020
4104446997136,32cyclictest20650irq/252-8000000.ethernet09:00:240
4104446997123,39cyclictest0-21swapper/011:55:190
410444699706,5cyclictest4122515-21apt-get08:55:020
410444699701,2cyclictest0-21swapper/010:50:010
410444699694,9cyclictest0-21swapper/008:40:270
410444699694,9cyclictest0-21swapper/008:40:270
4104446996839,26cyclictest20650irq/252-8000000.ethernet10:00:270
4104446996837,27cyclictest20650irq/252-8000000.ethernet07:15:000
4104446996836,28cyclictest20650irq/252-8000000.ethernet10:15:200
4104446996836,28cyclictest20650irq/252-8000000.ethernet10:15:200
4104446996825,36cyclictest0-21swapper/007:50:270
4104446996825,36cyclictest0-21swapper/007:50:270
410444699679,44cyclictest4088718-1kworker/0:0H+mmc_complete08:05:020
4104446996726,38cyclictest0-21swapper/009:05:280
410444699662,14cyclictest20850irq/208-8000000.ethernet07:55:120
4104447996545,13cyclictest231ktimers/107:35:141
4104447996545,13cyclictest231ktimers/107:35:131
4104446996538,23cyclictest20650irq/252-8000000.ethernet09:15:150
4104446996537,24cyclictest20650irq/252-8000000.ethernet10:55:240
4104446996537,24cyclictest20650irq/252-8000000.ethernet10:55:240
4104446996536,26cyclictest20650irq/252-8000000.ethernet12:15:220
4104446996536,24cyclictest20650irq/252-8000000.ethernet08:25:140
410444699642,3cyclictest4148400-21diskstats11:25:160
4104446996336,23cyclictest20650irq/252-8000000.ethernet10:50:240
4104446996335,23cyclictest20650irq/252-8000000.ethernet11:20:150
410444699631,6cyclictest4125409-21df09:10:170
4104446996313,17cyclictest4122515-21apt-get08:55:010
4104446996227,32cyclictest4155695-21users12:05:280
4104446996219,37cyclictest0-21swapper/008:10:200
410444699621,4cyclictest4119113-21users08:30:280
4104446996134,24cyclictest20650irq/252-8000000.ethernet11:35:250
4104446996034,23cyclictest20650irq/252-8000000.ethernet07:50:000
4104446996030,24cyclictest4138945-21apt10:30:110
410444699596,10cyclictest4138709-21head10:25:260
4104446995934,21cyclictest20650irq/252-8000000.ethernet08:05:160
4104446995930,26cyclictest20850irq/208-8000000.ethernet10:40:170
410444699592,3cyclictest4105912-21perl07:15:220
410444699591,9cyclictest4133671-21munin-run09:59:590
410444699591,55cyclictest0-21swapper/011:30:290
4104446995835,20cyclictest20650irq/252-8000000.ethernet12:00:290
4104446995832,22cyclictest20650irq/252-8000000.ethernet09:50:090
4104446995830,23cyclictest0-21swapper/011:10:290
4104446995734,19cyclictest20650irq/252-8000000.ethernet07:40:120
410444699573,13cyclictest4117382-21tail08:20:290
4104446995727,27cyclictest0-21swapper/010:10:260
4104446995629,23cyclictest4128560-21latency_hist09:30:010
4104446995629,23cyclictest4128560-21latency_hist09:30:010
4104446995628,24cyclictest4156433-21threads12:10:260
4104446995625,28cyclictest20850irq/208-8000000.ethernet10:20:170
4104447995547,4cyclictest4160033-21munin-plugin-st12:35:001
4104446995537,13cyclictest20650irq/252-8000000.ethernet11:40:170
4104446995535,15cyclictest4129824-21sh09:35:210
4104446995535,15cyclictest4129824-21sh09:35:210
4104446995534,17cyclictest20650irq/252-8000000.ethernet11:50:160
4104446995529,23cyclictest4160082-21ls12:35:010
410444699551,3cyclictest4146826-21perl11:15:210
410444999541,10cyclictest0-21swapper/210:25:162
4104446995428,23cyclictest4127544-21mailstats09:20:260
410444699542,4cyclictest0-21swapper/007:40:010
410444699542,4cyclictest0-21swapper/007:40:010
410444699541,4cyclictest4140342-21grep10:35:270
410444699541,49cyclictest0-21swapper/007:10:000
4104446995412,4cyclictest0-21swapper/009:40:280
410444699537,5cyclictest0-21swapper/008:35:250
4104446995328,21cyclictest4151898-21ssh11:45:210
410444699531,49cyclictest0-21swapper/009:30:280
4104446995236,13cyclictest0-21swapper/007:20:290
4104446995231,18cyclictest20650irq/252-8000000.ethernet08:45:270
4104446995226,23cyclictest4131959-21/usr/sbin/munin09:45:290
4104446995217,29cyclictest0-21swapper/007:25:260
410444699511,3cyclictest4108352-21diskstats07:30:190
4104449994941,5cyclictest4142125-21munin-plugin-st10:50:012
4104449994739,4cyclictest4127682-21munin-plugin-st09:25:002
4104449994738,5cyclictest4118303-21munin-plugin-st08:30:002
4104447994730,11cyclictest0-21swapper/109:25:281
4104447994730,11cyclictest0-21swapper/109:25:281
4104447994531,9cyclictest4140381-21grep10:35:291
4104449994432,8cyclictest4119982-21sendmail08:40:002
4104447994431,9cyclictest0-21swapper/108:10:271
4104447994429,10cyclictest0-21swapper/108:05:231
4104447994336,5cyclictest231ktimers/107:30:181
4104447994334,5cyclictest0-21swapper/112:20:281
4104447994334,5cyclictest0-21swapper/112:20:281
4104447994332,7cyclictest0-21swapper/111:45:001
410444999427,27cyclictest311ktimers/207:35:002
4104449994232,6cyclictest0-21swapper/211:00:002
4104449994232,6cyclictest0-21swapper/210:59:592
4104449994231,8cyclictest0-21swapper/210:40:302
4104447994234,4cyclictest4142962-21munin-plugin-st10:55:001
410444799423,16cyclictest24-21ksoftirqd/110:15:011
4104447994227,9cyclictest0-21swapper/109:05:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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