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2026-07-01 - 09:36

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 Jul 01, 2026 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
680121000,5sleep2281ktimersoftd/223:18:492
219499860,4rtkit-daemon2193-21rtkit-daemon19:55:340
2076998521,15cyclictest0-21swapper/021:16:350
2076998121,53cyclictest0-21swapper/022:27:130
2076997829,31cyclictest27450-21processes21:24:220
2076997829,30cyclictest5770-21cpuspeed_turbos20:54:060
2076997827,27cyclictest1227-21runrttasks21:31:140
2076997820,51cyclictest0-21swapper/023:49:030
2076997820,50cyclictest0-21swapper/022:03:040
2076997728,29cyclictest1227-21runrttasks23:01:300
2076997728,29cyclictest1227-21runrttasks23:01:300
2076997725,44cyclictest0-21swapper/021:44:190
2076997723,32cyclictest0-21swapper/023:44:020
2076997629,41cyclictest966-21ssh21:34:090
2076997625,29cyclictest15629-21latency_hist21:08:540
2076997624,35cyclictest0-21swapper/020:44:080
2076997622,46cyclictest0-21swapper/022:14:440
2076997620,49cyclictest0-21swapper/022:38:360
2076997527,40cyclictest23389-21tune2fs21:19:120
2076997526,42cyclictest12112-21sh23:24:200
2076997524,44cyclictest0-21swapper/021:58:530
2076997524,33cyclictest0-21swapper/023:22:240
2076997523,45cyclictest0-21swapper/019:04:150
2076997522,46cyclictest0-21swapper/020:42:000
2076997522,45cyclictest0-21swapper/020:03:560
2076997427,39cyclictest0-21swapper/022:19:210
2076997427,39cyclictest0-21swapper/022:19:210
2076997424,34cyclictest0-21swapper/023:54:010
2076997424,30cyclictest0-21swapper/022:44:380
2076997424,30cyclictest0-21swapper/021:03:530
2076997424,30cyclictest0-21swapper/021:03:530
2076997423,43cyclictest0-21swapper/019:44:150
2076997422,45cyclictest0-21swapper/023:04:010
2076997324,42cyclictest0-21swapper/021:39:090
2076997324,42cyclictest0-21swapper/021:39:090
2076997323,43cyclictest0-21swapper/023:09:220
2076997321,46cyclictest0-21swapper/023:29:000
2076997321,45cyclictest0-21swapper/022:57:420
2076997321,34cyclictest0-21swapper/023:18:490
2076997318,48cyclictest0-21swapper/022:12:440
2076997234,24cyclictest12835-21fschecks_time22:39:070
2076997228,28cyclictest1227-21runrttasks21:08:570
2076997226,30cyclictest0-21swapper/022:32:570
2076997225,39cyclictest19687-21kernelversion23:39:060
2076997225,39cyclictest19687-21kernelversion23:39:060
2076997222,33cyclictest0-21swapper/022:04:070
2076997220,45cyclictest0-21swapper/022:50:360
2076997220,45cyclictest0-21swapper/021:51:020
2076997220,30cyclictest0-21swapper/020:51:150
2076997143,22cyclictest0-21swapper/018:38:580
2076997121,43cyclictest0-21swapper/018:45:180
2076997121,42cyclictest0-21swapper/000:04:150
2076997027,36cyclictest17870-21ssh23:37:050
2076997024,39cyclictest22469-21irqstats19:19:200
2076997022,20cyclictest0-21swapper/000:00:410
2076996922,32cyclictest0-21swapper/020:37:440
2076996825,35cyclictest1227-21runrttasks20:29:140
2076996820,34cyclictest0-21swapper/020:24:240
2076996820,34cyclictest0-21swapper/020:24:240
2076996816,34cyclictest0-21swapper/019:52:240
208599673,56cyclictest10947-21rm22:35:313
160642674,12sleep20-21swapper/221:54:572
2076996627,32cyclictest0-21swapper/019:34:140
2076996621,30cyclictest0-21swapper/018:39:210
2076996619,29cyclictest0-21swapper/020:04:100
2076996532,27cyclictest1227-21runrttasks19:24:530
2076996529,29cyclictest16174-21grep20:14:140
2076996521,29cyclictest26212-21munin-node19:29:160
2076996520,29cyclictest0-21swapper/020:13:370
2076996418,29cyclictest9968-21df_abs18:54:120
2076996418,29cyclictest9968-21df_abs18:54:120
2076996415,42cyclictest0-21swapper/020:19:140
2076996321,35cyclictest0-21swapper/019:18:580
2076996317,39cyclictest0-21swapper/019:03:580
2076996317,39cyclictest0-21swapper/019:03:580
208599623,13cyclictest0-21swapper/321:09:243
2076996227,18cyclictest0-21swapper/018:49:160
2076996212,43cyclictest0-21swapper/019:39:210
2076996212,43cyclictest0-21swapper/019:39:210
151952623,50sleep20-21swapper/219:04:192
3502617,42sleep1455-21fschecks_time18:34:161
2076996118,37cyclictest0-21swapper/019:09:140
2085996021,32cyclictest0-21swapper/321:29:083
208599593,49cyclictest31606-21runrttasks23:06:583
230412583,8sleep323051-21uname23:44:113
208599585,44cyclictest0-21swapper/322:44:023
208499582,49cyclictest0-21swapper/222:50:172
2081995839,12cyclictest31585-21fschecks_count22:19:101
2081995839,12cyclictest31585-21fschecks_count22:19:101
176232583,47sleep20-21swapper/221:59:052
219499570,5rtkit-daemon2193-21rtkit-daemon23:04:112
208499579,30cyclictest107550irq/46-eth023:54:392
2081995730,10cyclictest15566-21swap21:54:231
114272573,8sleep111527-21tail21:49:121
64732563,46sleep30-21swapper/323:18:233
304872562,10sleep30-21swapper/322:18:203
219499560,6rtkit-daemon2193-21rtkit-daemon21:39:152
219499560,6rtkit-daemon2193-21rtkit-daemon21:39:152
219499560,5rtkit-daemon2193-21rtkit-daemon20:48:392
208599564,45cyclictest0-21swapper/321:34:083
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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