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2026-05-25 - 00:57

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 100 highest latencies:
System rack4slot1s.osadl.org (updated Sun May 24, 2026 12:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
92052990,3sleep20-21swapper/212:27:482
92052990,3sleep20-21swapper/212:27:482
161992920,2sleep20-21swapper/209:52:472
161992920,2sleep20-21swapper/209:52:472
161992920,2sleep20-21swapper/209:52:472
122532710,2chrt12255-21ntpq11:07:540
122532710,2chrt12255-21ntpq11:07:540
145062690,3sleep20-21swapper/209:47:492
145062690,3sleep20-21swapper/209:47:492
251442600,1chrt0-21swapper/008:47:570
251442600,1chrt0-21swapper/008:47:570
270422590,4sleep20-21swapper/207:27:512
270422590,4sleep20-21swapper/207:27:512
41622580,3sleep30-21swapper/310:47:473
41622580,3sleep30-21swapper/310:47:473
86542520,3sleep00-21swapper/009:32:470
86542520,3sleep00-21swapper/009:32:470
86542520,3sleep00-21swapper/009:32:470
234062490,3chrt0-21swapper/308:43:503
234062490,3chrt0-21swapper/308:43:503
2117999480,29cyclictest20696-21seq11:32:350
2117999471,33cyclictest14708-21taskset11:13:050
2117999471,33cyclictest14708-21taskset11:13:050
2117999471,32cyclictest6811-21seq12:20:470
2117999471,32cyclictest6811-21seq12:20:470
2117999471,32cyclictest3597-21seq10:45:110
2117999471,32cyclictest3597-21seq10:45:110
2117999471,31cyclictest28118-21chrt11:52:120
2117999471,31cyclictest28118-21chrt11:52:120
2117999471,2cyclictest0-21swapper/007:24:520
2117999471,2cyclictest0-21swapper/007:24:520
2117999470,34cyclictest31969-21chrt12:02:380
2117999470,34cyclictest31969-21chrt12:02:380
2117999470,32cyclictest4852-21seq12:14:560
2117999470,32cyclictest4852-21seq12:14:560
2117999461,32cyclictest32592-21sed07:42:500
2117999461,32cyclictest32592-21sed07:42:500
2117999461,32cyclictest32592-21sed07:42:500
2117999461,31cyclictest5493-21taskset10:50:180
2117999461,31cyclictest5493-21taskset10:50:180
2117999461,31cyclictest27096-21chrt08:53:240
2117999461,31cyclictest27096-21chrt08:53:240
2117999461,30cyclictest8458-21chrt08:04:350
2117999461,30cyclictest8458-21chrt08:04:350
2117999461,30cyclictest8458-21chrt08:04:350
2117999461,30cyclictest29776-21chrt11:54:340
2117999461,30cyclictest29776-21chrt11:54:340
2117999461,30cyclictest26846-21chrt10:22:280
2117999461,30cyclictest19681-21taskset08:34:100
2117999461,30cyclictest15315-21chrt09:48:190
2117999461,30cyclictest15315-21chrt09:48:190
2117999461,28cyclictest29121-21chrt09:00:310
2117999461,28cyclictest29121-21chrt09:00:310
2117999461,28cyclictest28561-21chrt10:25:170
2117999461,28cyclictest28561-21chrt10:25:170
2117999461,27cyclictest1183-21chrt12:05:470
2117999461,27cyclictest1183-21chrt12:05:470
2117999461,27cyclictest1183-21chrt12:05:470
2117999460,32cyclictest29797-21taskset07:36:410
2117999460,32cyclictest29797-21taskset07:36:410
2117999460,32cyclictest29797-21taskset07:36:410
2117999460,32cyclictest26252-21chrt11:47:100
2117999460,32cyclictest26252-21chrt11:47:100
2117999460,32cyclictest21511-21taskset08:38:400
2117999460,32cyclictest21511-21taskset08:38:400
2117999451,34cyclictest2219-21which07:47:540
2117999451,34cyclictest2219-21which07:47:540
2117999451,34cyclictest2219-21which07:47:540
2117999451,32cyclictest12343-21taskset08:16:210
2117999451,32cyclictest12343-21taskset08:16:210
2117999451,32cyclictest10957-21taskset11:03:040
2117999451,32cyclictest10957-21taskset11:03:040
2117999451,31cyclictest9927-21chrt09:36:330
2117999451,31cyclictest9927-21chrt09:36:330
2117999451,31cyclictest8542-21taskset12:23:470
2117999451,31cyclictest8542-21taskset12:23:470
2117999451,31cyclictest4829-21chrt07:56:270
2117999451,31cyclictest4829-21chrt07:56:270
2117999451,31cyclictest4829-21chrt07:56:270
2117999451,31cyclictest30833-21chrt09:03:160
2117999451,31cyclictest30833-21chrt09:03:160
2117999451,31cyclictest23095-21taskset10:12:150
2117999451,31cyclictest23095-21taskset10:12:150
2117999451,30cyclictest24373-21taskset11:42:140
2117999451,30cyclictest24373-21taskset11:42:140
2117999451,29cyclictest10409-21seq12:28:300
2117999451,29cyclictest10409-21seq12:28:300
2117999451,28cyclictest32735-21taskset09:08:490
2117999451,28cyclictest32735-21taskset09:08:490
2117999451,28cyclictest31556-21seq07:40:190
2117999451,28cyclictest31556-21seq07:40:190
2117999451,1cyclictest0-21swapper/012:35:400
2117999451,1cyclictest0-21swapper/012:35:400
2117999451,1cyclictest0-21swapper/012:35:400
2117999451,1cyclictest0-21swapper/010:56:520
2117999451,1cyclictest0-21swapper/010:56:520
2117999450,31cyclictest8107-21seq09:32:270
2117999450,31cyclictest32133-21taskset10:33:200
2117999450,31cyclictest32133-21taskset10:33:200
2117999450,31cyclictest32133-21taskset10:33:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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