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2026-01-05 - 11:56

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 50 highest latencies:
System rack4slot1s.osadl.org (updated Mon Jan 05, 2026 00:44:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2697221070,3sleep026976-21cut20:30:370
1649421070,1chrt16495-21/usr/sbin/munin00:20:450
1649421070,1chrt16495-21/usr/sbin/munin00:20:450
1499021040,3chrt0-21swapper/322:50:393
200962840,3sleep20-21swapper/200:30:442
200962840,3sleep20-21swapper/200:30:442
4862780,3sleep20-21swapper/223:40:312
4862780,3sleep20-21swapper/223:40:312
174492740,22chrt0-21swapper/021:30:400
174492740,22chrt0-21swapper/021:30:400
164222720,2sleep016589-21grep20:00:470
164222720,2sleep016589-21grep20:00:470
190462680,2chrt0-21swapper/020:10:270
190462680,2chrt0-21swapper/020:10:270
51912670,3sleep20-21swapper/219:30:452
149392620,4chrt0-21swapper/222:50:382
71222600,2chrt6249-21/usr/sbin/munin23:55:450
71222600,2chrt6249-21/usr/sbin/munin23:55:450
71222600,2chrt6249-21/usr/sbin/munin23:55:450
241832600,3sleep00-21swapper/021:50:290
241832600,3sleep00-21swapper/021:50:290
185232580,2sleep10-21swapper/123:00:381
185232580,2sleep10-21swapper/123:00:381
185232580,2sleep10-21swapper/123:00:381
157102550,2sleep20-21swapper/200:20:352
156852540,4sleep20-21swapper/221:25:432
156852540,4sleep20-21swapper/221:25:432
227592510,2sleep00-21swapper/023:10:500
131532510,3sleep20-21swapper/221:20:362
43362480,3sleep20-21swapper/222:20:472
43362480,3sleep20-21swapper/222:20:472
57752470,2sleep10-21swapper/121:00:381
57752470,2sleep10-21swapper/121:00:381
275922410,8sleep0201rcuc/023:25:380
275922410,8sleep0201rcuc/023:25:380
117492400,3sleep20-21swapper/222:40:492
117492400,3sleep20-21swapper/222:40:492
34642380,2sleep03465-21gltestperf22:20:370
34642380,2sleep03465-21gltestperf22:20:370
94292370,3chrt0-21swapper/221:10:352
94292370,3chrt0-21swapper/221:10:352
305462370,3chrt0-21swapper/222:05:392
232852370,2sleep20-21swapper/220:20:382
232852370,2sleep20-21swapper/220:20:382
191122370,2sleep019118-21sh00:30:230
29342993630,4cyclictest579-21fschecks_count19:20:371
29342993630,4cyclictest579-21fschecks_count19:20:371
112692360,4sleep20-21swapper/200:05:482
91652350,2sleep016-21ksoftirqd/021:10:290
29341993529,4cyclictest572-21cups-browsed21:40:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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