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2026-08-03 - 06:07

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 Aug 03, 2026 00:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1598521090,1sleep115990-21unixbench_multi22:29:021
1598521090,1sleep115990-21unixbench_multi22:29:021
166802860,2sleep1700-21192.168.115.40-manager21:04:321
10282790,1sleep20-21swapper/221:49:032
10282790,1sleep20-21swapper/221:49:032
319332780,2chrt0-21swapper/000:39:020
319332780,2chrt0-21swapper/000:39:020
319332780,2chrt0-21swapper/000:39:020
3402770,3sleep1343-21cpuspeed20:23:481
3402770,3sleep1343-21cpuspeed20:23:481
308522680,3sleep30-21swapper/323:09:003
308522680,3sleep30-21swapper/323:09:003
262612660,1sleep10-21swapper/122:58:531
262612660,1sleep10-21swapper/122:58:531
211092630,3sleep30-21swapper/322:43:563
211092630,3sleep30-21swapper/322:43:563
323372560,2sleep132339-21sshd00:39:321
323372560,2sleep132339-21sshd00:39:321
323372560,2sleep132339-21sshd00:39:321
255192560,3sleep10-21swapper/122:55:321
255192560,3sleep10-21swapper/122:55:321
320082480,2chrt0-21swapper/123:13:531
320082480,2chrt0-21swapper/123:13:531
139752480,3sleep3431rcuc/319:33:453
139752480,3sleep3431rcuc/319:33:453
19852470,2sleep00-21swapper/021:53:520
19852470,2sleep00-21swapper/021:53:520
50982460,3sleep20-21swapper/220:34:032
50982460,3sleep20-21swapper/220:34:032
77242450,4sleep20-21swapper/223:34:002
77242450,4sleep20-21swapper/223:34:002
126122450,2sleep2351rcuc/219:28:542
126122450,2sleep2351rcuc/219:28:542
259812420,3chrt0-21swapper/221:29:062
259812420,3chrt0-21swapper/221:29:062
21722420,2chrt0-21swapper/323:19:013
21722420,2chrt0-21swapper/323:19:013
6738994036,2cyclictest0-21swapper/100:03:451
6738994036,2cyclictest0-21swapper/100:03:451
6738994036,2cyclictest0-21swapper/100:03:451
672999404,5cyclictest171ktimers/022:30:370
672999404,5cyclictest171ktimers/022:30:370
6729993820,9cyclictest90-1pr/ttyS021:58:550
6729993820,9cyclictest90-1pr/ttyS021:58:550
200232380,3sleep20-21swapper/200:08:532
200232380,3sleep20-21swapper/200:08:532
672999378,5cyclictest171ktimers/022:16:250
672999378,5cyclictest171ktimers/022:16:250
672999373,27cyclictest19133-21/usr/sbin/munin00:04:030
194522360,2chrt0-21swapper/122:38:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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