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2026-03-11 - 09:16

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 Mar 11, 2026 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30707599831,56cyclictest0-21swapper/122:00:181
30707599813,42cyclictest0-21swapper/123:20:021
307074997739,28cyclictest343238-21latency_hist22:40:010
30707499741,59cyclictest0-21swapper/000:35:120
307074997230,34cyclictest0-21swapper/022:50:010
307074997036,26cyclictest20650irq/252-8000000.ethernet19:55:230
30707499701,60cyclictest0-21swapper/020:30:010
30707599691,55cyclictest0-21swapper/121:10:021
307074996726,37cyclictest334484-21grep21:45:270
307075996629,34cyclictest319424-21/usr/sbin/munin20:20:201
307074996629,31cyclictest325523-21/usr/sbin/munin20:55:220
307074996545,16cyclictest20650irq/252-8000000.ethernet20:25:000
307074996529,33cyclictest322101-21ssh20:35:210
307074996439,20cyclictest0-21swapper/021:00:270
307074996438,22cyclictest20650irq/252-8000000.ethernet23:45:010
307074996429,31cyclictest339702-21/usr/sbin/munin22:15:290
307074996413,9cyclictest0-21swapper/020:10:010
307074996341,18cyclictest20650irq/252-8000000.ethernet21:25:010
307074996336,23cyclictest20850irq/208-8000000.ethernet19:30:180
307074996335,25cyclictest20650irq/252-8000000.ethernet00:00:270
307074996335,23cyclictest20650irq/252-8000000.ethernet23:25:120
307074996312,27cyclictest0-21swapper/021:10:030
307075996216,8cyclictest330286-21apt-get21:25:011
307074996227,30cyclictest0-21swapper/019:50:290
307074996224,32cyclictest0-21swapper/022:20:280
307074996220,38cyclictest309044-21users19:15:280
30707499621,59cyclictest0-21swapper/022:00:280
30707599612,16cyclictest330577-21/usr/sbin/munin21:25:181
307074996129,29cyclictest338743-21/usr/sbin/munin22:10:260
307074996128,30cyclictest20850irq/208-8000000.ethernet00:10:000
307074996127,31cyclictest20850irq/208-8000000.ethernet21:25:100
307074996021,26cyclictest330880-1kworker/0:2H+mmc_complete23:50:010
30707499601,5cyclictest327582-21/usr/sbin/munin21:05:280
30707499601,4cyclictest317885-21dropbear20:10:200
30707499601,3cyclictest362807-21grep00:30:280
30707499601,20cyclictest0-21swapper/023:35:140
30707499591,4cyclictest325082-21unixbench_singl20:50:290
307079995849,5cyclictest360374-21munin-plugin-st00:19:592
307074995835,20cyclictest20650irq/252-8000000.ethernet22:40:190
307074995835,20cyclictest20650irq/252-8000000.ethernet21:55:240
30707499582,4cyclictest307966-21munin-node19:15:020
307074995822,33cyclictest332592-21cut21:35:260
30707499581,5cyclictest318622-21df20:15:170
307074995736,18cyclictest20650irq/252-8000000.ethernet21:30:160
307074995725,27cyclictest0-21swapper/020:40:270
307074995725,27cyclictest0-21swapper/020:40:270
30707499571,4cyclictest310445-21open_inodes19:25:250
307075995614,15cyclictest0-21swapper/123:35:011
307074995622,27cyclictest167350irq/118-8000000.ethernet-tx019:10:010
307074995621,33cyclictest360761-21sh00:20:210
307074995621,33cyclictest0-21swapper/020:45:230
307074995616,7cyclictest348187-21grep23:05:290
30707499561,49cyclictest0-21swapper/020:35:010
307074995535,16cyclictest0-21swapper/000:25:190
307074995533,17cyclictest346274-21phc2sys22:55:270
307074995531,20cyclictest312291-21mailstats19:35:280
307074995531,20cyclictest167350irq/118-8000000.ethernet-tx023:30:280
307074995527,25cyclictest20850irq/208-8000000.ethernet00:15:220
307074995526,26cyclictest0-21swapper/023:55:250
307074995517,4cyclictest20850irq/208-8000000.ethernet19:20:180
307074995517,4cyclictest20850irq/208-8000000.ethernet19:20:180
307074995516,4cyclictest329407-21sshd21:16:190
30707599541,8cyclictest0-21swapper/119:30:001
307075995416,12cyclictest0-21swapper/123:05:011
30707499542,3cyclictest312733-21df_inode19:40:170
307074995423,27cyclictest359438-21grep00:10:280
307074995423,27cyclictest359438-21grep00:10:280
307074995328,19cyclictest337995-21mailstats22:05:270
307074995328,19cyclictest337995-21mailstats22:05:270
307074995326,20cyclictest20850irq/208-8000000.ethernet21:40:110
307074995322,28cyclictest20850irq/208-8000000.ethernet23:00:220
307074995319,29cyclictest0-21swapper/019:45:270
307074995317,32cyclictest0-21swapper/020:00:290
307074995317,32cyclictest0-21swapper/020:00:290
30707499531,50cyclictest0-21swapper/021:50:280
30707499531,12cyclictest345529-21/usr/sbin/munin22:50:280
30707499523,43cyclictest341081-21tune2fs22:25:200
30707599517,18cyclictest0-21swapper/119:15:011
30707599514,10cyclictest0-21swapper/123:55:011
307075995125,12cyclictest0-21swapper/100:00:151
30707499516,10cyclictest355954-21grep23:50:270
307074995138,9cyclictest20650irq/252-8000000.ethernet23:10:160
307074995127,21cyclictest307068-21cyclictest23:20:220
307074995118,30cyclictest0-21swapper/022:30:250
307074995018,4cyclictest20850irq/208-8000000.ethernet23:15:160
307075994828,12cyclictest0-21swapper/121:05:251
307079994633,10cyclictest358784-21latency_hist00:10:012
307075994631,11cyclictest341288-21/usr/sbin/munin22:25:261
307075994627,12cyclictest0-21swapper/119:40:121
307075994625,14cyclictest331711-21/usr/sbin/munin21:30:221
30707599461,34cyclictest0-21swapper/120:30:011
307079994537,4cyclictest337302-21cron22:05:002
307079994534,6cyclictest318309-21grep20:10:292
307079994530,9cyclictest319976-21grep20:20:282
307079994527,12cyclictest0-21swapper/223:30:202
30707599456,19cyclictest0-21swapper/119:35:011
307075994524,12cyclictest348069-21/usr/sbin/munin23:05:271
30707599451,20cyclictest0-21swapper/119:55:181
307079994433,7cyclictest0-21swapper/200:25:002
307075994421,11cyclictest0-21swapper/123:25:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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