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2026-10-11 - 15:47

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #f, slot #7

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.
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 50 highest latencies:
System rackfslot7s.osadl.org (updated Sun Oct 11, 2026 00:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
200740399374518,3722cyclictest2052773-21kworker/2:0+events21:29:592
20074039928879,2874cyclictest2005525-21kworker/2:1+events19:15:172
200739699280812,2791cyclictest2028535-21kworker/0:0+events20:45:140
200739699275212,2736cyclictest2081838-21kworker/0:0+events23:00:190
200740399268513,2668cyclictest2071816-21kworker/2:2+events22:40:132
200740899267513,2658cyclictest2043460-21kworker/3:0+events21:00:213
200740899265911,2646cyclictest2035249-21kworker/3:0+events20:35:183
200740899265812,2642cyclictest2060884-21kworker/3:1+events21:55:153
200740399264713,2630cyclictest2060915-21kworker/2:1+events22:20:142
200740399264313,2627cyclictest2082048-21kworker/2:2+events23:05:152
200740399257812,2562cyclictest2090056-21kworker/2:2+events23:23:362
200740399257112,2556cyclictest2044919-21kworker/2:0+events21:10:132
200740899254113,2524cyclictest2041781-21kworker/3:1+events20:55:193
200739699252812,2512cyclictest2028535-21kworker/0:0+events20:53:490
200740899250612,2490cyclictest2045103-21kworker/3:1+events21:05:183
200740399249712,2482cyclictest2059166-21kworker/2:2+events21:52:172
200740399249512,2480cyclictest2091658-21kworker/2:0+events23:44:472
200739699249512,2479cyclictest2028535-21kworker/0:0+events20:30:180
200740099248810,2475cyclictest2015485-21kworker/1:0+events19:40:211
200739699248712,2471cyclictest2099788-21kworker/0:0+events23:52:460
200740399248210,2470cyclictest2015740-21kworker/2:0+events20:00:092
200739699245012,2434cyclictest2028535-21kworker/0:0+events20:57:130
200739699244412,2428cyclictest2020765-21kworker/0:2+events19:59:450
200739699244211,2427cyclictest2052866-21kworker/0:0+events21:56:480
200739699244112,2425cyclictest2090085-21kworker/0:1+events23:26:390
200739699244012,2424cyclictest2012359-21kworker/0:1+events19:25:330
200740399243912,2424cyclictest2024006-21kworker/2:2+events20:05:272
200740899243012,2414cyclictest2020886-21kworker/3:2+events19:54:523
200739699242912,2415cyclictest2025273-21kworker/0:1+events20:10:030
200740099242612,2411cyclictest2025558-21kworker/1:2+events20:25:271
200739699242512,2410cyclictest2057915-21kworker/0:1+events21:49:390
200739699242412,2409cyclictest2073679-21kworker/0:2+events22:55:250
200740399242311,2409cyclictest2033762-21kworker/2:0+events20:40:162
200739699242312,2407cyclictest2065591-21kworker/0:1+events22:13:070
200739699242311,2409cyclictest2028535-21kworker/0:0+events20:15:400
200739699242112,2406cyclictest2049947-21kworker/0:2+events21:27:450
200739699242111,2407cyclictest2088101-21kworker/0:2+events23:36:080
200739699241911,2404cyclictest2112522-21kworker/0:1+events00:35:420
200739699241812,2402cyclictest2049947-21kworker/0:2+events21:21:110
200739699241512,2399cyclictest2101720-21kworker/0:2+events00:12:490
200740399241211,2398cyclictest2107237-21kworker/2:2+events00:26:082
200740899241112,2395cyclictest2067011-21kworker/3:2+events22:22:053
200739699240812,2392cyclictest2101720-21kworker/0:2+events00:05:360
200740099240612,2390cyclictest2051322-21kworker/1:2+events21:39:011
200739699240412,2389cyclictest2088101-21kworker/0:2+events23:22:480
200739699240311,2389cyclictest2017446-21kworker/0:1+events19:43:460
200739699240012,2386cyclictest2063926-21kworker/0:2+events22:24:230
200739699239612,2381cyclictest2107863-21kworker/0:0+events00:26:310
200740399239312,2375cyclictest2048305-21kworker/2:2+events21:36:262
200740899239012,2375cyclictest2008512-21kworker/3:2+events19:23:403
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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