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2026-07-12 - 18:03

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 Sun Jul 12, 2026 12:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2658221080,3chrt0-21swapper/210:13:322
1398221030,3chrt0-21swapper/212:33:302
1398221030,3chrt0-21swapper/212:33:302
257682980,3sleep20-21swapper/211:38:312
257682980,3sleep20-21swapper/211:38:312
100482940,3sleep20-21swapper/212:23:292
100482940,3sleep20-21swapper/212:23:292
100482940,3sleep20-21swapper/212:23:292
34982920,2sleep20-21swapper/209:13:182
34982920,2sleep20-21swapper/209:13:182
162392870,3sleep30-21swapper/309:43:423
162392870,3sleep30-21swapper/309:43:423
162392870,3sleep30-21swapper/309:43:423
53742830,2sleep20-21swapper/207:48:402
53742830,2sleep20-21swapper/207:48:402
166182800,3chrt0-21swapper/212:38:412
166182800,3chrt0-21swapper/212:38:412
166182800,3chrt0-21swapper/212:38:412
43122680,2chrt0-21swapper/109:13:331
244982610,4sleep024499-21/usr/sbin/munin11:33:380
244982610,4sleep024499-21/usr/sbin/munin11:33:380
176502600,2chrt17651-21/usr/sbin/munin09:48:380
176502600,2chrt17651-21/usr/sbin/munin09:48:380
325872580,3chrt0-21swapper/310:28:373
325872580,3chrt0-21swapper/310:28:373
41602560,4chrt0-21swapper/007:48:220
41602560,4chrt0-21swapper/007:48:220
41602560,4chrt0-21swapper/007:48:220
138982540,2sleep113981-21fschecks_count12:33:301
138982540,2sleep113981-21fschecks_count12:33:301
159562460,1sleep3431rcuc/308:18:323
159562460,1sleep3431rcuc/308:18:323
156702460,3sleep00-21swapper/009:43:350
156702460,3sleep00-21swapper/009:43:350
156702460,3sleep00-21swapper/009:43:350
49832450,2sleep05106-21df10:43:300
49832450,2sleep05106-21df10:43:300
32302450,8sleep0171ktimers/010:38:310
305982440,3sleep20-21swapper/210:23:372
305982440,3sleep20-21swapper/210:23:372
305982440,3sleep20-21swapper/210:23:372
63522430,4sleep30-21swapper/307:53:323
63522430,4sleep30-21swapper/307:53:323
63522430,4sleep30-21swapper/307:53:323
23757994135,4cyclictest201rcuc/010:54:230
23757994135,4cyclictest201rcuc/010:54:230
23757994135,4cyclictest201rcuc/010:54:230
23757994134,5cyclictest201rcuc/008:44:200
23757994134,5cyclictest201rcuc/008:44:200
213162410,2sleep30-21swapper/308:33:313
213162410,2sleep30-21swapper/308:33:313
177082410,2sleep017713-21fschecks_time08:23:310
177082410,2sleep017713-21fschecks_time08:23:310
177082410,2sleep017713-21fschecks_time08:23:310
120192410,4sleep30-21swapper/308:08:313
120192410,4sleep30-21swapper/308:08:313
75702400,2chrt7573-21needreboot10:48:360
75702400,2chrt7573-21needreboot10:48:360
138742400,3sleep20-21swapper/209:38:392
138742400,3sleep20-21swapper/209:38:392
61252390,2sleep06305-21uptime10:43:420
61252390,2sleep06305-21uptime10:43:420
287382390,2sleep20-21swapper/210:18:352
287382390,2sleep20-21swapper/210:18:352
23757993932,5cyclictest201rcuc/010:34:230
23757993932,5cyclictest201rcuc/007:34:190
23757993932,5cyclictest201rcuc/007:34:190
23757993815,19cyclictest201rcuc/010:29:230
23757993815,19cyclictest201rcuc/010:29:230
23760993729,6cyclictest21490-21gltestperf08:33:321
23760993729,6cyclictest21490-21gltestperf08:33:321
23757993730,4cyclictest0-21swapper/007:28:180
23757993730,4cyclictest0-21swapper/007:28:180
23757993630,4cyclictest201rcuc/007:59:190
23757993630,4cyclictest201rcuc/007:59:190
35192350,2sleep20-21swapper/207:43:422
35192350,2sleep20-21swapper/207:43:422
35192350,2sleep20-21swapper/207:43:422
267432350,6sleep0201rcuc/011:38:410
267432350,6sleep0201rcuc/011:38:410
23757993526,7cyclictest4397-21needreboot09:13:350
23757993526,7cyclictest24133-21cron10:08:190
23757993526,7cyclictest24133-21cron10:08:190
23757993526,7cyclictest24133-21cron10:08:190
23757993520,8cyclictest90-1pr/ttyS009:38:560
23757993520,8cyclictest90-1pr/ttyS009:38:560
23757993422,4cyclictest181rcu_preempt12:20:070
23757993422,4cyclictest181rcu_preempt12:20:070
23757993422,4cyclictest181rcu_preempt12:20:070
23760993326,5cyclictest32260-21threads11:53:411
23760993326,5cyclictest32260-21threads11:53:411
23757993325,6cyclictest14678-21systemd-journal11:18:190
23757993325,6cyclictest14678-21systemd-journal11:18:190
23757993325,6cyclictest14678-21systemd-journal11:18:190
23757993312,17cyclictest201rcuc/008:54:210
23757993312,17cyclictest201rcuc/008:54:210
23757993312,17cyclictest201rcuc/008:54:210
137132330,3sleep30-21swapper/311:03:423
137132330,3sleep30-21swapper/311:03:423
137132330,3sleep30-21swapper/311:03:423
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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