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2026-06-29 - 17:47

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 Mon Jun 29, 2026 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1789521160,3sleep20-21swapper/211:53:222
1789521160,3sleep20-21swapper/211:53:222
680321130,2sleep00-21swapper/009:58:190
641421110,2sleep30-21swapper/309:58:103
641421110,2sleep30-21swapper/309:58:103
296432960,3sleep30-21swapper/310:58:243
296432960,3sleep30-21swapper/310:58:243
296432960,3sleep30-21swapper/310:58:243
279602900,3sleep30-21swapper/309:28:193
88282870,3sleep30-21swapper/311:28:273
88282870,3sleep30-21swapper/311:28:273
88282870,3sleep30-21swapper/311:28:273
145942790,2chrt0-21swapper/210:18:232
145942790,2chrt0-21swapper/210:18:232
145942790,2chrt0-21swapper/210:18:232
183422760,2chrt0-21swapper/309:03:153
183422760,2chrt0-21swapper/309:03:153
269552730,4chrt0-21swapper/309:23:293
269552730,4chrt0-21swapper/309:23:293
153162670,2sleep00-21swapper/011:48:140
153162670,2sleep00-21swapper/011:48:140
153162670,2sleep00-21swapper/011:48:140
14932660,2chrt1496-21cpuspeed08:18:180
14932660,2chrt1496-21cpuspeed08:18:180
14932660,2chrt1496-21cpuspeed08:18:180
243092620,3chrt0-21swapper/310:43:293
243092620,3chrt0-21swapper/310:43:293
243092620,3chrt0-21swapper/310:43:293
303642600,3chrt0-21swapper/009:33:270
303642600,3chrt0-21swapper/009:33:270
161162540,1chrt0-21swapper/011:48:260
161162540,1chrt0-21swapper/011:48:260
161162540,1chrt0-21swapper/011:48:260
173432510,2sleep20-21swapper/207:33:212
173432510,2sleep20-21swapper/207:33:212
161722510,2sleep20-21swapper/210:23:222
161722510,2sleep20-21swapper/210:23:222
161722510,2sleep20-21swapper/210:23:222
139782490,2sleep20-21swapper/208:48:312
139782490,2sleep20-21swapper/208:48:312
9778994523,20cyclictest1346-21avahi-daemon12:39:570
9778994523,20cyclictest1346-21avahi-daemon12:39:570
9778994523,20cyclictest1346-21avahi-daemon12:39:570
9778994418,3cyclictest0-21swapper/010:53:300
9778994418,3cyclictest0-21swapper/010:53:300
9778994418,3cyclictest0-21swapper/010:53:300
9778994416,5cyclictest3536-21sshd11:13:470
9778994416,5cyclictest3536-21sshd11:13:470
9778994416,5cyclictest15718-21timerandwakeup08:53:280
9778994416,5cyclictest15718-21timerandwakeup08:53:280
121202440,2chrt12122-21latency_hist10:13:150
121202440,2chrt12122-21latency_hist10:13:150
86502430,3sleep20-21swapper/210:03:202
32682430,3sleep20-21swapper/208:23:142
32682430,3sleep20-21swapper/208:23:142
32682430,3sleep20-21swapper/208:23:142
69552420,3sleep30-21swapper/311:23:293
69552420,3sleep30-21swapper/311:23:293
211352420,3sleep20-21swapper/209:08:292
211352420,3sleep20-21swapper/209:08:292
269752410,1sleep00-21swapper/012:18:210
269752410,1sleep00-21swapper/012:18:210
9778994016,4cyclictest0-21swapper/012:28:290
9778994016,4cyclictest0-21swapper/012:28:290
9778994016,4cyclictest0-21swapper/012:28:290
9778994016,4cyclictest0-21swapper/012:28:290
9780993928,3cyclictest181rcu_preempt11:35:351
9780993928,3cyclictest181rcu_preempt11:35:351
9780993928,3cyclictest181rcu_preempt11:35:351
9780993829,2cyclictest181rcu_preempt10:08:031
9780993829,2cyclictest181rcu_preempt10:08:031
9780993829,2cyclictest181rcu_preempt10:08:031
59972380,3sleep20-21swapper/208:28:252
59972380,3sleep20-21swapper/208:28:252
59972380,3sleep20-21swapper/208:28:252
45132380,3sleep30-21swapper/311:18:223
45132380,3sleep30-21swapper/311:18:223
45132380,3sleep30-21swapper/311:18:223
159092370,2sleep116037-21missed_timers11:48:241
159092370,2sleep116037-21missed_timers11:48:241
159092370,2sleep116037-21missed_timers11:48:241
9780993630,4cyclictest18190-21wc09:03:071
9780993630,4cyclictest18190-21wc09:03:071
240102360,3sleep30-21swapper/309:18:193
240102360,3sleep30-21swapper/309:18:193
222512360,3sleep20-21swapper/210:38:252
222512360,3sleep20-21swapper/210:38:252
222512360,3sleep20-21swapper/210:38:252
9778993529,4cyclictest18227-21timerwakeupswit07:33:310
9778993529,4cyclictest18227-21timerwakeupswit07:33:310
9778993525,8cyclictest17970-21netstat11:53:240
9778993525,8cyclictest17970-21netstat11:53:240
269382350,4sleep20-21swapper/207:58:222
269382350,4sleep20-21swapper/207:58:222
212292350,2sleep30-21swapper/309:08:293
212292350,2sleep30-21swapper/309:08:293
9780993428,4cyclictest18536-21needreboot10:28:251
9780993428,4cyclictest18536-21needreboot10:28:251
9780993428,4cyclictest18536-21needreboot10:28:251
9780993426,6cyclictest28473-21fschecks_count08:03:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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