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2026-07-08 - 02:59

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 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 Tue Jul 07, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13829899941,81cyclictest0-21swapper/010:40:120
138301998578,4cyclictest311ktimers/212:05:012
13829899823,71cyclictest159988-21unixbench_multi09:10:300
138301997920,11cyclictest182440-21/usr/sbin/munin11:25:182
13829899782,69cyclictest186024-21/usr/sbin/munin11:45:220
13829899782,69cyclictest186024-21/usr/sbin/munin11:45:220
13829899771,69cyclictest181135-21/usr/sbin/munin11:15:280
138300997545,27cyclictest174546-21run-parts10:40:001
138298997346,23cyclictest167350irq/118-8000000.ethernet-tx008:35:040
13829899732,65cyclictest174124-21/usr/sbin/munin10:35:230
13829899732,36cyclictest149065-21/usr/sbin/munin08:10:150
138301997215,24cyclictest158622-21/usr/sbin/munin09:05:192
138301997215,24cyclictest158622-21/usr/sbin/munin09:05:192
13829899721,64cyclictest0-21swapper/008:20:170
13829899721,64cyclictest0-21swapper/008:20:170
13829899711,63cyclictest165766-21meminfo09:45:240
13829899701,62cyclictest0-21swapper/011:00:150
13829899701,62cyclictest0-21swapper/011:00:150
13829899691,65cyclictest148092-21date08:05:010
13829899691,61cyclictest0-21swapper/007:35:140
138300996725,38cyclictest153069-21unixbench_multi08:30:301
138300996725,38cyclictest153069-21unixbench_multi08:30:301
138300996721,35cyclictest0-21swapper/108:05:291
138300996721,35cyclictest0-21swapper/108:05:291
13829899662,61cyclictest191506-21cron12:20:000
13829899661,63cyclictest163997-21/usr/sbin/munin09:35:260
13829899661,5cyclictest157448-21users08:55:290
13829899661,57cyclictest0-21swapper/007:25:120
13829899661,11cyclictest0-21swapper/012:15:010
138298996523,9cyclictest0-21swapper/010:20:290
13829899651,62cyclictest0-21swapper/007:30:190
13829899651,62cyclictest0-21swapper/007:30:180
13829899651,60cyclictest169175-21phc2sys10:05:260
13829899642,59cyclictest0-21swapper/009:00:210
138300996327,30cyclictest0-21swapper/108:05:001
138298996335,23cyclictest148773-21grep08:05:290
138298996335,23cyclictest148773-21grep08:05:290
138298996329,29cyclictest0-21swapper/007:20:260
138298996328,31cyclictest146975-21grep07:55:290
138298996328,31cyclictest146975-21grep07:55:290
138298996322,5cyclictest0-21swapper/011:40:280
13829899631,4cyclictest145394-21munin-run07:50:000
138300996223,32cyclictest141000-21grep07:20:281
138300996220,35cyclictest0-21swapper/107:45:301
138300996219,36cyclictest0-21swapper/109:40:301
13829899623,55cyclictest176970-21unixbench_multi10:50:280
13829899623,55cyclictest176970-21unixbench_multi10:50:280
13829899622,4cyclictest188425-21diskstats12:00:200
138298996221,8cyclictest0-21swapper/008:45:000
13829899621,58cyclictest162640-21munin-plugin-st09:30:000
13829899621,57cyclictest0-21swapper/008:25:140
13829899621,4cyclictest179318-21irqstats11:05:230
13829899621,3cyclictest149699-21apt-get08:15:030
13829899621,2cyclictest0-21swapper/007:40:290
13829899621,2cyclictest0-21swapper/007:40:290
138301996117,21cyclictest162839-21/usr/sbin/munin09:30:202
13829899611,58cyclictest0-21swapper/012:30:200
13829899611,57cyclictest138382-21date07:10:010
13829899611,57cyclictest0-21swapper/007:15:150
13829899611,54cyclictest0-21swapper/010:55:190
13829899611,4cyclictest0-21swapper/008:30:320
13829899611,4cyclictest0-21swapper/008:30:310
13830199604,21cyclictest30-21rcuc/209:25:012
138300996023,30cyclictest163398-21grep09:30:291
138300996020,33cyclictest0-21swapper/108:15:001
138300996019,35cyclictest0-21swapper/111:15:291
138300996016,36cyclictest0-21swapper/110:40:271
138298996038,18cyclictest167350irq/118-8000000.ethernet-tx011:20:260
138298996030,27cyclictest166841-21unixbench_multi09:50:290
13829899601,57cyclictest0-21swapper/011:35:210
13829899601,57cyclictest0-21swapper/009:40:200
13829899601,56cyclictest182605-21sh11:25:210
13829899601,2cyclictest0-21swapper/009:55:220
138300995920,35cyclictest0-21swapper/112:15:321
138300995919,31cyclictest0-21swapper/111:00:201
138300995919,31cyclictest0-21swapper/111:00:191
13829899592,53cyclictest161575-21ptp4l09:20:270
13829899592,4cyclictest159236-21users09:05:300
13829899592,4cyclictest159236-21users09:05:300
138298995923,5cyclictest176237-21munin-plugin-st10:50:010
13829899591,56cyclictest0-21swapper/007:50:140
13829899591,55cyclictest0-21swapper/012:20:190
13829899591,52cyclictest0-21swapper/012:25:110
13829899591,52cyclictest0-21swapper/012:25:110
13829899591,3cyclictest172228-21cpu10:25:150
13829899591,31cyclictest0-21swapper/007:10:230
138300995826,27cyclictest0-21swapper/111:05:291
13830099582,15cyclictest175598-21apt-get10:45:151
138300995818,33cyclictest0-21swapper/108:55:231
138300995818,31cyclictest0-21swapper/107:25:251
138300995815,8cyclictest0-21swapper/112:30:311
138298995823,31cyclictest0-21swapper/011:55:300
13829899581,51cyclictest0-21swapper/012:35:110
13829899581,4cyclictest162899-21df09:30:170
138300995723,29cyclictest166840-21unixbench_multi09:50:281
138300995721,32cyclictest168749-21latency_hist10:05:011
138300995719,30cyclictest0-21swapper/109:35:291
138300995717,33cyclictest0-21swapper/108:25:291
138300995717,31cyclictest0-21swapper/107:10:311
138300995716,32cyclictest0-21swapper/108:40:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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