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2026-01-10 - 23:18

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack4slot1s.osadl.org (updated Sat Jan 10, 2026 12:44:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3040621080,3sleep20-21swapper/209:30:412
3040621080,3sleep20-21swapper/209:30:412
36932860,3sleep20-21swapper/209:45:412
36932860,3sleep20-21swapper/209:45:412
126402770,3sleep30-21swapper/311:35:413
126402770,3sleep30-21swapper/311:35:413
204862720,3chrt0-21swapper/307:35:493
204862720,3chrt0-21swapper/307:35:493
44942670,2sleep20-21swapper/212:40:402
158202670,3sleep30-21swapper/308:50:423
74882660,8sleep07487-21tail09:55:400
74882660,8sleep07487-21tail09:55:400
74882660,8sleep07487-21tail09:55:400
50802620,1sleep20-21swapper/211:15:422
50802620,1sleep20-21swapper/211:15:422
296042620,1sleep00-21swapper/008:00:460
296042620,1sleep00-21swapper/008:00:460
291752600,4chrt0-21swapper/312:20:393
291752600,4chrt0-21swapper/312:20:393
114482600,3sleep30-21swapper/311:30:503
114482600,3sleep30-21swapper/311:30:503
295702580,2sleep20-21swapper/212:20:422
295702580,2sleep20-21swapper/212:20:422
202802520,1sleep00-21swapper/007:35:450
202802520,1sleep00-21swapper/007:35:450
243162500,3chrt0-21swapper/307:45:503
243162500,3chrt0-21swapper/307:45:503
221092460,2sleep30-21swapper/307:40:433
221092460,2sleep30-21swapper/307:40:433
321962450,4sleep20-21swapper/211:00:462
321962450,4sleep20-21swapper/211:00:462
317992430,2sleep031913-21switchtime12:25:520
9182400,3sleep0919-21latency_hist11:05:350
9182400,3sleep0919-21latency_hist11:05:350
157082400,3sleep20-21swapper/208:50:412
40572390,4sleep10-21swapper/109:45:441
40572390,4sleep10-21swapper/109:45:441
146582380,3sleep30-21swapper/311:40:433
146582380,3sleep30-21swapper/311:40:433
310582370,3sleep30-21swapper/312:25:423
10337993630,4cyclictest1346-21avahi-daemon12:20:480
10337993630,4cyclictest1346-21avahi-daemon12:20:480
131722350,4sleep20-21swapper/210:10:412
131722350,4sleep20-21swapper/210:10:412
1034199351,2cyclictest0-21swapper/309:48:543
1034199351,2cyclictest0-21swapper/309:48:543
10337993529,4cyclictest0-21swapper/007:40:390
10337993529,4cyclictest0-21swapper/007:40:390
10337993522,11cyclictest0-21swapper/009:05:410
10337993522,11cyclictest0-21swapper/009:05:410
61112330,2sleep20-21swapper/208:25:412
61112330,2sleep20-21swapper/208:25:412
210422330,4sleep30-21swapper/310:30:483
210422330,4sleep30-21swapper/310:30:483
145342330,2sleep114537-21unixbench-2d08:45:501
10337993227,4cyclictest735-21systemd-logind08:40:510
10337993227,4cyclictest735-21systemd-logind08:40:510
10337993225,5cyclictest31515-21ntp_kernel_pll_08:05:460
239772310,4sleep20-21swapper/207:45:442
239772310,4sleep20-21swapper/207:45:442
10339993126,4cyclictest32392-21gltestperf09:35:401
10339993126,4cyclictest32392-21gltestperf09:35:401
10339993126,4cyclictest32392-21gltestperf09:35:401
10339993125,4cyclictest0-21swapper/110:05:281
10339993125,4cyclictest0-21swapper/110:05:281
10337993125,4cyclictest20341-21munin-node11:55:440
10337993125,4cyclictest20341-21munin-node11:55:440
10337993125,4cyclictest20341-21munin-node11:55:440
79782300,3sleep30-21swapper/309:55:473
79782300,3sleep30-21swapper/309:55:473
79782300,3sleep30-21swapper/309:55:473
10339993017,10cyclictest2384-21apt-config11:07:241
10337993026,2cyclictest0-21swapper/008:00:280
10337993026,2cyclictest0-21swapper/008:00:280
10337993024,5cyclictest5537-21cut09:50:400
10337993024,4cyclictest16538-21latency_hist10:20:380
10337993024,4cyclictest16538-21latency_hist10:20:380
10337993022,6cyclictest23255-21basename12:05:280
10337993022,6cyclictest23255-21basename12:05:280
309822290,3sleep3431rcuc/308:05:403
1034199291,2cyclictest0-21swapper/309:13:433
1034199291,2cyclictest0-21swapper/309:13:433
10339992924,4cyclictest10335-21cyclictest10:55:511
10339992924,4cyclictest10335-21cyclictest10:55:511
10339992924,4cyclictest10335-21cyclictest10:55:511
10339992924,3cyclictest10335-21cyclictest08:40:531
10339992924,3cyclictest10335-21cyclictest08:40:531
10339992924,3cyclictest0-21swapper/109:05:281
10339992924,3cyclictest0-21swapper/109:05:281
10337992925,3cyclictest25620-21gltestperf12:10:410
10337992925,3cyclictest25620-21gltestperf12:10:410
10337992923,5cyclictest28225-21kernelversion10:50:430
10337992923,5cyclictest28225-21kernelversion10:50:430
10337992923,5cyclictest25676-21kernelversion07:50:430
10337992923,5cyclictest25676-21kernelversion07:50:430
327582280,4sleep30-21swapper/308:10:383
140202280,3sleep30-21swapper/310:10:503
140202280,3sleep30-21swapper/310:10:503
1034199281,2cyclictest0-21swapper/312:04:243
1034199281,2cyclictest0-21swapper/312:04:243
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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