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2026-08-13 - 14:04

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 Thu Aug 13, 2026 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29450999910611,91cyclictest2945917-21munin-node19:15:013
29450999910611,91cyclictest2945917-21munin-node19:15:013
294509899834,40cyclictest0-21swapper/221:45:012
2945098997627,40cyclictest0-21swapper/223:40:272
2945098995926,28cyclictest0-21swapper/222:45:292
2945098995926,28cyclictest0-21swapper/222:45:282
2945098995921,31cyclictest0-21swapper/222:10:272
2945098995915,5cyclictest0-21swapper/223:55:292
2945098995832,20cyclictest2980504-21kworker/u8:0-ext4-rsv-conversion23:10:012
2945098995816,6cyclictest0-21swapper/221:00:272
2945098995716,4cyclictest0-21swapper/219:30:282
2945098995636,16cyclictest2998208-21cron00:19:592
2945098995615,7cyclictest0-21swapper/220:25:262
2945098995521,8cyclictest2947872-21dropbear19:24:512
2945098995515,5cyclictest0-21swapper/222:50:272
2945095995544,8cyclictest2954637-21munin-plugin-st20:05:001
294509399554,48cyclictest0-21swapper/021:05:260
2945098995423,27cyclictest1258-21in:imuxsock22:30:012
2945098995419,4cyclictest0-21swapper/223:25:262
2945098995415,5cyclictest0-21swapper/219:25:282
294509399541,51cyclictest0-21swapper/020:50:110
294509399541,51cyclictest0-21swapper/020:50:100
2945098995325,24cyclictest0-21swapper/223:20:182
2945098995318,31cyclictest0-21swapper/221:20:192
2945098995317,5cyclictest0-21swapper/221:10:292
2945093995342,5cyclictest167350irq/118-8000000.ethernet-tx022:30:020
2945093995334,16cyclictest167350irq/118-8000000.ethernet-tx021:20:270
294509399531,46cyclictest0-21swapper/020:25:110
2945098995220,4cyclictest0-21swapper/221:15:282
2945098995220,4cyclictest0-21swapper/221:15:282
2945098995218,5cyclictest0-21swapper/221:25:172
2945093995248,2cyclictest0-21swapper/021:05:000
2945093995244,4cyclictest167350irq/118-8000000.ethernet-tx022:10:170
2945098995120,4cyclictest0-21swapper/200:24:592
2945098995118,4cyclictest0-21swapper/223:30:262
2945098995118,4cyclictest0-21swapper/223:30:262
294509399514,6cyclictest2987214-21users23:10:300
2945093995144,4cyclictest167350irq/118-8000000.ethernet-tx000:05:000
294509399514,44cyclictest0-21swapper/020:15:300
2945093995142,5cyclictest167350irq/118-8000000.ethernet-tx023:05:290
2945093995135,11cyclictest0-21swapper/022:35:270
294509899509,8cyclictest0-21swapper/200:30:312
294509899501,8cyclictest2970283-21/usr/sbin/munin21:35:232
2945098995017,6cyclictest2993097-21grep23:45:272
2945098995017,5cyclictest2945668-21ptp4l19:10:262
2945098995017,5cyclictest2945668-21ptp4l19:10:262
2945098995016,7cyclictest2987131-21grep23:10:292
2945098995013,4cyclictest0-21swapper/219:40:012
2945098995010,14cyclictest167550irq/134-8000000.ethernet-tx220:00:272
2945098994940,6cyclictest2996531-21munin-plugin-st00:10:002
2945098994917,3cyclictest0-21swapper/221:50:192
2945093994942,4cyclictest20650irq/252-8000000.ethernet23:40:290
2945093994942,4cyclictest167350irq/118-8000000.ethernet-tx000:10:200
2945093994942,4cyclictest167350irq/118-8000000.ethernet-tx000:10:200
2945093994941,4cyclictest167350irq/118-8000000.ethernet-tx020:00:180
2945098994829,16cyclictest167550irq/134-8000000.ethernet-tx223:00:002
2945098994818,5cyclictest0-21swapper/221:05:192
2945098994817,4cyclictest0-21swapper/200:40:012
2945098994817,26cyclictest0-21swapper/222:35:022
2945098994815,5cyclictest0-21swapper/222:45:012
2945098994815,3cyclictest0-21swapper/223:50:252
2945093994838,5cyclictest0-21swapper/019:15:020
2945093994833,10cyclictest0-21swapper/022:50:290
2945093994830,15cyclictest167350irq/118-8000000.ethernet-tx021:45:220
294509399481,4cyclictest2956300-21grep20:10:270
294509399481,4cyclictest2956300-21grep20:10:270
294509399481,15cyclictest0-21swapper/021:45:000
2945098994716,5cyclictest0-21swapper/222:00:222
2945098994716,4cyclictest0-21swapper/220:15:342
2945098994715,7cyclictest2952301-21apt-get19:50:162
2945098994715,7cyclictest2952301-21apt-get19:50:152
2945098994714,8cyclictest2961273-21cut20:40:242
2945098994710,8cyclictest0-21swapper/220:50:282
2945098994710,8cyclictest0-21swapper/220:50:272
2945095994735,9cyclictest2981156-21sendmail22:40:001
2945095994734,9cyclictest0-21swapper/100:20:291
2945095994734,8cyclictest0-21swapper/120:49:591
2945093994738,6cyclictest131ktimers/020:40:100
2945093994732,9cyclictest0-21swapper/019:35:270
2945098994635,7cyclictest0-21swapper/220:15:022
2945098994635,7cyclictest0-21swapper/220:15:012
2945093994635,8cyclictest2948723-21munin-plugin-st19:30:010
2945093994635,7cyclictest0-21swapper/000:00:000
2945098994537,5cyclictest2955405-21grep20:05:282
2945098994515,8cyclictest311ktimers/220:20:282
2945095994533,8cyclictest0-21swapper/121:20:011
2945095994533,8cyclictest0-21swapper/121:20:011
2945095994531,9cyclictest0-21swapper/121:50:271
2945095994530,10cyclictest0-21swapper/120:40:281
2945093994533,7cyclictest2958092-21grep20:20:280
294509399451,3cyclictest0-21swapper/000:20:290
2945098994414,6cyclictest0-21swapper/222:35:252
2945095994431,8cyclictest0-21swapper/121:45:271
2945095994429,11cyclictest0-21swapper/123:05:281
2945095994428,11cyclictest0-21swapper/122:15:271
2945093994434,7cyclictest2975916-21grep22:05:290
2945093994431,6cyclictest2988830-21unixbench_multi23:20:290
2945093994428,14cyclictest167350irq/118-8000000.ethernet-tx021:15:160
2945093994428,14cyclictest167350irq/118-8000000.ethernet-tx021:15:150
294509399442,6cyclictest2981979-21users22:40:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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