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2026-04-22 - 02:04

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, 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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  Intel
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.
Unexpectedly long latencies may be caused by SMIs
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 rack1slot6s.osadl.org (updated Wed Apr 22, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2485991120,17rtkit-daemon2484-21rtkit-daemon19:09:370
2485991120,17rtkit-daemon2484-21rtkit-daemon19:09:370
2485991020,4rtkit-daemon12893-21munin-run18:18:021
11748991014,90cyclictest0-21swapper/020:03:160
248599990,7rtkit-daemon0-21swapper/018:39:391
1174899984,85cyclictest5506-21sh22:18:210
1174899973,66cyclictest0-21swapper/021:13:140
11748999516,57cyclictest2875-21aten_r1power_po21:28:070
1174899945,53cyclictest0-21swapper/021:04:210
1174899944,81cyclictest6846-21tune2fs21:33:130
1174899943,84cyclictest0-21swapper/021:02:040
1174899943,84cyclictest0-21swapper/019:18:170
1175399934,81cyclictest0-21swapper/320:13:143
1174899934,74cyclictest0-21swapper/021:27:480
1174899934,68cyclictest0-21swapper/020:18:190
1174899934,64cyclictest0-21swapper/022:23:220
1174899934,14cyclictest0-21swapper/021:53:380
1174899934,12cyclictest0-21swapper/019:24:170
1175399924,69cyclictest0-21swapper/321:43:063
1175399924,69cyclictest0-21swapper/321:43:063
1174899924,12cyclictest0-21swapper/022:33:090
1174899924,12cyclictest0-21swapper/022:03:280
1174899924,12cyclictest0-21swapper/021:48:500
1174899924,12cyclictest0-21swapper/020:23:230
1174899924,12cyclictest0-21swapper/019:43:270
1174899924,12cyclictest0-21swapper/019:28:210
1174899924,12cyclictest0-21swapper/017:18:040
1174899914,68cyclictest0-21swapper/022:31:400
1174899914,65cyclictest0-21swapper/020:28:080
1174899914,65cyclictest0-21swapper/020:28:080
1174899914,61cyclictest0-21swapper/017:53:160
1174899914,12cyclictest0-21swapper/021:18:290
1174899914,12cyclictest0-21swapper/019:08:000
11748999114,69cyclictest0-21swapper/019:17:410
1175399906,77cyclictest0-21swapper/319:23:273
1175399904,79cyclictest0-21swapper/320:18:323
1175399904,66cyclictest0-21swapper/322:26:273
1174899904,79cyclictest0-21swapper/022:09:020
1174899904,65cyclictest0-21swapper/019:40:580
1174899904,13cyclictest0-21swapper/018:28:220
1174899904,13cyclictest0-21swapper/018:28:220
1174899904,12cyclictest0-21swapper/021:58:100
1174899904,12cyclictest0-21swapper/021:46:290
1174899904,12cyclictest0-21swapper/021:46:290
1174899904,12cyclictest0-21swapper/020:38:080
1175399894,78cyclictest0-21swapper/319:18:253
1175399894,77cyclictest0-21swapper/321:52:503
1174899894,12cyclictest0-21swapper/019:35:020
1174899893,62cyclictest32529-21cpuspeed_turbos19:48:130
11748998912,53cyclictest0-21swapper/019:58:160
1175399884,78cyclictest0-21swapper/320:07:583
1175399884,64cyclictest0-21swapper/321:09:073
1175399884,64cyclictest0-21swapper/321:09:073
1175399883,50cyclictest16471-21kworker/3:120:27:533
11753998810,57cyclictest0-21swapper/319:33:203
1174899884,14cyclictest0-21swapper/020:13:220
1174899884,12cyclictest0-21swapper/017:34:510
1174899884,11cyclictest0-21swapper/019:55:310
1175399875,75cyclictest0-21swapper/322:09:353
1175399874,76cyclictest0-21swapper/320:08:213
1175399874,76cyclictest0-21swapper/319:28:313
1175399873,77cyclictest24242-21tr17:33:183
1175399873,53cyclictest0-21swapper/319:56:433
1174899878,70cyclictest0-21swapper/017:18:210
1174899874,14cyclictest0-21swapper/020:08:130
1174899874,13cyclictest0-21swapper/017:23:210
1174899874,10cyclictest1287-21snmpd20:55:240
1174899873,8cyclictest10112-21fschecks_count21:38:130
11748998714,58cyclictest22503-21ssh21:08:160
11748998714,58cyclictest22503-21ssh21:08:160
1175399864,75cyclictest0-21swapper/321:03:153
1174899864,66cyclictest1419-21runrttasks20:36:300
1174899864,65cyclictest0-21swapper/020:50:560
1174899864,65cyclictest0-21swapper/020:50:560
1174899864,63cyclictest0-21swapper/018:40:030
1174899864,12cyclictest0-21swapper/020:44:260
1174899864,12cyclictest0-21swapper/018:03:020
1174899863,12cyclictest0-21swapper/017:28:370
1175399854,74cyclictest0-21swapper/322:06:003
1175399854,74cyclictest0-21swapper/321:41:053
1175399854,74cyclictest0-21swapper/320:33:323
1175399854,74cyclictest0-21swapper/319:38:273
1175399854,73cyclictest15768-21munin-node22:33:233
1175399854,61cyclictest22977-21aten_r1power_cu21:58:043
1175399854,57cyclictest0-21swapper/319:43:263
1175399853,53cyclictest9881-21unixbench_singl20:48:283
1175399853,53cyclictest9881-21unixbench_singl20:48:283
1174899854,12cyclictest0-21swapper/018:53:210
1174899853,64cyclictest0-21swapper/017:43:140
1174899853,12cyclictest0-21swapper/022:13:290
248599840,4rtkit-daemon2484-21rtkit-daemon22:17:522
1175399845,73cyclictest0-21swapper/321:20:323
1175399844,73cyclictest20729-21grep17:23:363
1175399844,73cyclictest0-21swapper/322:13:053
1175399844,73cyclictest0-21swapper/317:28:323
1175399844,72cyclictest303-21ssh19:48:153
1175399844,72cyclictest1419-21runrttasks20:02:133
1175399844,72cyclictest0-21swapper/320:43:273
1175399844,72cyclictest0-21swapper/319:13:203
1175399844,65cyclictest0-21swapper/321:00:253
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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