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2026-08-21 - 11:13

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 Fri Aug 21, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2194991110,7rtkit-daemon0-21swapper/121:24:251
2194991090,7rtkit-daemon0-21swapper/120:56:261
2194991020,6rtkit-daemon23911-21latency21:31:171
2194991000,6rtkit-daemon10133-21munin-node20:21:201
2808999973,23cyclictest20835-21diskmemload21:16:130
2808999973,23cyclictest20835-21diskmemload21:16:130
219499970,10rtkit-daemon18-21rcuc/120:45:491
2808999963,24cyclictest15967-21grep22:56:260
219499960,5rtkit-daemon0-21swapper/120:46:111
219499950,5rtkit-daemon0-21swapper/120:16:201
219499950,5rtkit-daemon0-21swapper/118:46:311
28089999417,9cyclictest423-21ssh20:06:330
219499940,6rtkit-daemon0-21swapper/121:26:251
219499940,6rtkit-daemon0-21swapper/120:26:501
2809699935,82cyclictest28017-21ssh21:36:482
2809699933,83cyclictest0-21swapper/219:58:372
2809699933,82cyclictest0-21swapper/221:08:222
2808999934,25cyclictest0-21swapper/021:55:120
2808999924,27cyclictest0-21swapper/023:06:280
2808999924,27cyclictest0-21swapper/021:11:070
2808999924,25cyclictest0-21swapper/021:09:540
2808999924,22cyclictest2634-21munin-node19:56:270
28089999219,9cyclictest107550irq/46-eth022:16:170
28089999215,13cyclictest0-21swapper/021:56:160
28089999215,13cyclictest0-21swapper/021:56:160
2808999914,26cyclictest0-21swapper/021:41:100
2808999914,25cyclictest0-21swapper/022:48:080
2808999914,24cyclictest0-21swapper/022:45:410
2808999914,24cyclictest0-21swapper/022:45:410
2809699903,79cyclictest28018-21fschecks_time23:16:092
2808999905,24cyclictest0-21swapper/023:20:040
2808999904,27cyclictest0-21swapper/022:33:160
2808999904,25cyclictest0-21swapper/021:38:460
2808999904,25cyclictest0-21swapper/021:26:180
2808999904,25cyclictest0-21swapper/020:52:440
2808999904,24cyclictest0-21swapper/021:46:120
2808999903,26cyclictest0-21swapper/021:05:550
2808999903,25cyclictest25787-21grep23:11:250
2808999894,75cyclictest0-21swapper/020:30:270
2808999894,67cyclictest0-21swapper/020:16:110
2808999894,24cyclictest0-21swapper/022:23:120
28089998920,10cyclictest0-21swapper/022:36:130
2808999884,76cyclictest0-21swapper/022:15:430
2808999884,64cyclictest0-21swapper/020:46:190
2808999884,26cyclictest0-21swapper/022:01:160
2808999884,25cyclictest0-21swapper/019:53:370
2808999884,23cyclictest0-21swapper/020:32:240
2808999884,23cyclictest0-21swapper/020:32:240
2808999883,27cyclictest0-21swapper/022:52:380
2808999883,27cyclictest0-21swapper/020:41:070
2808999883,27cyclictest0-21swapper/020:38:210
2808999883,25cyclictest0-21swapper/021:31:140
2808999883,24cyclictest0-21swapper/023:05:420
28089998819,9cyclictest20835-21diskmemload20:11:290
2809699874,76cyclictest15014-21gltestperf22:56:112
2809699873,78cyclictest0-21swapper/221:48:542
2809699873,76cyclictest0-21swapper/222:38:562
28096998711,69cyclictest27010-21crond23:15:492
2808999874,76cyclictest0-21swapper/022:26:560
2808999874,66cyclictest0-21swapper/018:36:270
2808999874,26cyclictest0-21swapper/017:57:260
2808999873,75cyclictest15606-21unixbench_multi19:36:310
2808999873,26cyclictest0-21swapper/020:56:140
2808999873,25cyclictest0-21swapper/020:25:480
2809799864,76cyclictest0-21swapper/323:15:493
2809699864,75cyclictest0-21swapper/222:51:082
2809699863,77cyclictest0-21swapper/220:09:072
2809699863,75cyclictest5979-21grep22:41:242
2809699863,75cyclictest5979-21grep22:41:242
2809699863,42cyclictest0-21swapper/222:27:162
2809699862,48cyclictest0-21swapper/221:34:232
2808999864,29cyclictest0-21swapper/019:21:250
2808999864,27cyclictest0-21swapper/021:21:040
2808999864,23cyclictest0-21swapper/022:06:560
28089998631,47cyclictest22602-21tr18:46:150
2808999863,24cyclictest0-21swapper/020:01:240
2809699855,74cyclictest0-21swapper/222:11:042
2809699855,72cyclictest89501ssh20:21:012
2809699854,74cyclictest0-21swapper/221:27:522
2808999854,65cyclictest0-21swapper/018:41:110
2809799843,75cyclictest16057-21runrttasks22:09:013
2809799843,43cyclictest0-21swapper/322:31:253
2809699845,73cyclictest0-21swapper/220:14:022
2809699844,74cyclictest0-21swapper/222:46:232
2809699844,74cyclictest0-21swapper/221:56:272
2809699844,74cyclictest0-21swapper/221:56:272
2809699844,74cyclictest0-21swapper/220:46:142
2809699844,73cyclictest0-21swapper/221:04:332
2809699844,72cyclictest31273-21ntpq22:31:202
28096998414,63cyclictest0-21swapper/220:51:212
2808999844,72cyclictest0-21swapper/018:26:220
28089998421,8cyclictest1227-21runrttasks19:09:170
28089998421,8cyclictest1227-21runrttasks19:09:170
2809699834,74cyclictest0-21swapper/217:51:312
2809699834,73cyclictest0-21swapper/220:35:492
2809699834,73cyclictest0-21swapper/220:35:492
2809699834,72cyclictest1227-21runrttasks23:01:172
2809699834,40cyclictest13352-21munin-node20:26:192
2809699833,75cyclictest0-21swapper/220:43:022
2809699833,75cyclictest0-21swapper/218:41:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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