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2026-06-18 - 22:33

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 Thu Jun 18, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2067799885,74cyclictest0-21swapper/012:05:570
2067799874,77cyclictest23256-21gltestperf09:50:560
2067799874,77cyclictest23256-21gltestperf09:50:560
2067799874,48cyclictest0-21swapper/009:24:360
20677998412,56cyclictest16344-21crond12:05:320
2067799838,66cyclictest2942-21ls11:45:330
2067799824,59cyclictest2582-21munin-node10:55:540
2067799824,57cyclictest0-21swapper/010:46:020
2067799822,65cyclictest0-21swapper/006:56:040
20677998210,51cyclictest19034-21head09:45:480
2067799813,72cyclictest0-21swapper/010:53:240
2067799808,66cyclictest134141diskmemload10:43:570
2067799804,69cyclictest0-21swapper/011:50:500
2067799803,71cyclictest0-21swapper/009:30:550
20677998013,44cyclictest9983-21aten2.4-expect11:55:450
20677998013,44cyclictest9983-21aten2.4-expect11:55:450
2067799798,59cyclictest10973-21ssh10:20:540
2067799796,67cyclictest0-21swapper/009:11:080
2067799795,66cyclictest19086-21df_abs11:20:490
2067799794,68cyclictest8018-21taskset11:05:120
2067799794,53cyclictest0-21swapper/008:57:520
2067799793,70cyclictest32455-21gltestperf08:20:590
20677997918,41cyclictest0-21swapper/010:29:440
20677997918,41cyclictest0-21swapper/010:29:440
20677997917,56cyclictest5845-21df_abs07:25:570
2067799784,67cyclictest0-21swapper/010:03:460
2067799784,42cyclictest0-21swapper/007:00:530
2067799784,42cyclictest0-21swapper/007:00:530
2067799783,68cyclictest26323-21iostat_ios11:30:570
2067799783,68cyclictest15022-21chrt09:39:250
2067799783,57cyclictest0-21swapper/008:54:360
2067799774,66cyclictest0-21swapper/011:10:470
2067799774,66cyclictest0-21swapper/011:10:470
2067799774,66cyclictest0-21swapper/010:36:000
2067799774,53cyclictest0-21swapper/009:10:390
2067799774,53cyclictest0-21swapper/009:10:390
2067799773,68cyclictest21499-21python12:11:010
20677997718,41cyclictest0-21swapper/011:37:500
20677997715,44cyclictest0-21swapper/009:16:150
219499760,27rtkit-daemon2193-21rtkit-daemon07:01:021
219499760,27rtkit-daemon2193-21rtkit-daemon07:01:021
219499760,25rtkit-daemon0-21swapper/206:53:333
2067799768,52cyclictest0-21swapper/009:00:450
2067799764,66cyclictest0-21swapper/009:26:070
2067799764,53cyclictest0-21swapper/011:05:490
2067799763,66cyclictest4167-21diskstats10:10:510
2067799763,66cyclictest16404-21perl09:40:560
2067799763,66cyclictest1520-21processes10:06:060
2067799763,66cyclictest0-21swapper/008:06:010
2067799754,64cyclictest13414-21diskmemload10:15:590
2067799753,66cyclictest13414-21diskmemload11:45:480
2067799753,66cyclictest0-21swapper/011:25:540
2067799753,66cyclictest0-21swapper/010:30:530
2067799753,66cyclictest0-21swapper/010:30:530
2067799753,56cyclictest0-21swapper/011:17:050
2067799753,32cyclictest0-21swapper/008:35:560
20677997518,37cyclictest0-21swapper/008:40:510
2067799745,51cyclictest0-21swapper/009:57:140
20677997428,39cyclictest10217-21aten_r1power_po07:35:540
219499730,22rtkit-daemon0-21swapper/206:59:253
2067799733,64cyclictest0-21swapper/012:16:320
2067799733,35cyclictest2684-21crond07:20:430
2067799723,36cyclictest0-21swapper/007:51:010
2067799714,61cyclictest28797-21tune2fs07:06:030
2067799714,39cyclictest0-21swapper/008:34:510
2067799704,60cyclictest13430-21idleruntime-cro08:50:390
2067799703,61cyclictest0-21swapper/007:41:130
2067799703,60cyclictest22397-21ls06:51:130
20677997017,33cyclictest0-21swapper/007:56:100
2067799694,58cyclictest0-21swapper/008:30:400
2067799694,58cyclictest0-21swapper/008:30:400
2067799694,56cyclictest0-21swapper/008:15:410
2067799694,41cyclictest0-21swapper/008:00:530
161842690,6sleep316182-21grep09:40:533
2067799684,58cyclictest0-21swapper/007:10:570
2067799683,59cyclictest0-21swapper/007:21:260
2067799683,56cyclictest31353-21latency_hist08:20:410
2067799673,48cyclictest0-21swapper/007:30:540
74722660,4sleep37476-21ssh11:03:133
20681996511,30cyclictest0-21swapper/309:10:393
20681996511,30cyclictest0-21swapper/309:10:393
20677996510,36cyclictest107550irq/46-eth007:46:110
20677996510,36cyclictest107550irq/46-eth007:46:110
2068199649,35cyclictest0-21swapper/308:20:413
20681996423,24cyclictest25733-21df_abs11:30:493
49882637,48sleep20-21swapper/209:24:482
20681996325,13cyclictest12576-21cpuspeed_turbos09:35:523
20681996323,23cyclictest1227-21runrttasks08:56:363
20680996325,22cyclictest0-21swapper/211:40:512
20681996225,11cyclictest17699-21kernelversion12:05:563
2067799613,49cyclictest0-21swapper/006:50:450
219499600,6rtkit-daemon0-21swapper/207:00:473
219499600,6rtkit-daemon0-21swapper/207:00:473
2068199604,34cyclictest0-21swapper/310:17:333
20681996023,13cyclictest1124-21snmpd11:15:563
2068099603,41cyclictest0-21swapper/211:03:562
151972603,50sleep20-21swapper/208:51:112
310362597,11sleep20-21swapper/209:15:502
2068199594,37cyclictest0-21swapper/308:51:153
2068199594,36cyclictest0-21swapper/309:19:293
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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