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2026-04-02 - 22:01

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #3

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 rack7slot3s.osadl.org (updated Thu Apr 02, 2026 12:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2311921070,6sleep1221ktimersoftd/109:54:331
1161621030,9sleep3381ktimersoftd/310:18:503
1335699955,65cyclictest0-21swapper/011:45:260
1336199883,15cyclictest7750irq/56-dwc_otg10:50:241
187292850,1sleep10-21swapper/111:05:181
187292850,1sleep10-21swapper/111:05:181
269162830,2sleep20-21swapper/211:15:142
13356997835,10cyclictest0-21swapper/012:35:240
1335699769,46cyclictest0-21swapper/010:55:270
1335699762,40cyclictest0-21swapper/010:35:250
1335699762,40cyclictest0-21swapper/010:35:250
126662760,2sleep20-21swapper/207:05:372
227452750,5sleep11336199cyclictest12:27:351
13356997515,33cyclictest25172-21unixbench_singl07:55:360
54872730,1sleep10-21swapper/112:06:301
197502720,2sleep20-21swapper/209:11:582
13356997134,10cyclictest3727-21grep09:30:410
1335699707,55cyclictest0-21swapper/012:00:260
206242660,2sleep20-21swapper/209:50:392
1336399661,51cyclictest7750irq/56-dwc_otg10:35:392
1336399661,51cyclictest7750irq/56-dwc_otg10:35:392
13356996633,7cyclictest2414-21kworker/u8:109:40:240
1335699656,53cyclictest101ktimersoftd/011:35:140
13356996510,52cyclictest101ktimersoftd/009:25:140
13356996510,52cyclictest101ktimersoftd/009:25:140
1336399649,40cyclictest7950irq/56-dwc_otg_10:15:292
13361996412,16cyclictest15483-21ssh11:40:271
1335699636,22cyclictest0-21swapper/010:40:260
13363996220,11cyclictest0-21swapper/210:10:252
1335699626,44cyclictest16561-21fschecks_count12:20:300
1335699624,54cyclictest101ktimersoftd/008:10:130
13356996235,3cyclictest7750irq/56-dwc_otg11:55:270
13356996217,4cyclictest13-21rcuc/009:50:140
13356996217,4cyclictest13-21rcuc/009:50:140
1335699621,32cyclictest15844-21wget09:05:270
1336399619,37cyclictest0-21swapper/212:20:312
1336399613,49cyclictest7950irq/56-dwc_otg_11:55:362
13356996134,10cyclictest24522-21wc09:55:330
1335699613,27cyclictest0-21swapper/007:15:220
1335699612,35cyclictest149-21systemd-journal10:30:130
13356996123,21cyclictest16433-21idleruntime-cro07:25:130
13356996030,2cyclictest0-21swapper/012:15:230
1335699601,42cyclictest0-21swapper/008:15:250
1335699601,42cyclictest0-21swapper/008:15:250
1335699601,39cyclictest0-21swapper/009:35:280
1335699601,32cyclictest13309-21unixbench_singl08:55:400
1336399597,19cyclictest0-21swapper/211:35:272
1336399596,7cyclictest7950irq/56-dwc_otg_12:31:412
1336399595,8cyclictest7750irq/56-dwc_otg11:33:552
1336399594,6cyclictest7950irq/56-dwc_otg_09:25:422
1336399593,9cyclictest7950irq/56-dwc_otg_10:55:372
13356995944,4cyclictest15045-21unixbench-2d09:00:410
13356995939,4cyclictest17358-21diskmemload10:10:350
1335699592,40cyclictest11237-21ssh11:35:190
13356995915,27cyclictest9450irq/48-DMA09:12:250
1335699591,34cyclictest13417-21systemd07:10:280
1335699591,34cyclictest13417-21systemd07:10:280
1336399584,5cyclictest7950irq/56-dwc_otg_10:10:142
1336399582,6cyclictest0-21swapper/211:15:312
1336399581,5cyclictest13319-21sed10:20:322
1336399581,4cyclictest17358-21diskmemload09:15:352
1336199587,32cyclictest0-21swapper/109:45:261
1336199587,32cyclictest0-21swapper/109:45:261
1335699589,29cyclictest0-21swapper/008:10:410
1335699584,51cyclictest101ktimersoftd/008:55:130
13356995819,18cyclictest21961-21sh09:15:160
1336399578,39cyclictest7950irq/56-dwc_otg_11:41:052
1336399571,5cyclictest29443-21grep08:10:412
1336399571,10cyclictest0-21swapper/212:00:542
13361995714,13cyclictest21635-21rm11:47:001
1335699576,47cyclictest101ktimersoftd/008:20:410
13356995740,5cyclictest19538-21taskset09:11:360
13356995723,8cyclictest0-21swapper/012:30:240
1335699572,31cyclictest3855-21sshd10:10:140
1336399565,8cyclictest7950irq/56-dwc_otg_09:33:302
1336399562,10cyclictest7850irq/56-dwc_otg_09:47:402
1336399562,10cyclictest7850irq/56-dwc_otg_09:47:402
13356995638,9cyclictest31359-21ntpq09:25:360
13356995624,29cyclictest101ktimersoftd/008:25:250
1335699562,33cyclictest0-21swapper/010:15:250
1335699562,30cyclictest0-21swapper/008:30:410
1335699561,27cyclictest0-21swapper/009:50:310
315352550,2sleep30-21swapper/312:38:323
1336399559,43cyclictest4047-21ssh11:25:412
1336399552,6cyclictest7950irq/56-dwc_otg_12:06:332
1336399551,4cyclictest23783-21ssh10:32:442
13363995513,33cyclictest908-21runrttasks12:26:032
1336399551,13cyclictest0-21swapper/207:34:072
1336399551,10cyclictest21147-21latency_hist10:30:142
1336199556,14cyclictest7850irq/56-dwc_otg_08:50:241
13356995538,5cyclictest16931-21ssh11:40:580
13356995536,9cyclictest30008-21ssh10:01:420
13356995536,8cyclictest0-21swapper/011:55:080
13356995536,11cyclictest11917-21grep12:15:140
13356995532,13cyclictest917-21snmpd11:03:490
1335699551,4cyclictest31242-21ssh11:20:250
1336399548,5cyclictest24959-21unixbench_multi11:50:402
1336399544,7cyclictest7950irq/56-dwc_otg_09:41:402
1336399544,39cyclictest7950irq/56-dwc_otg_09:55:322
1336399543,4cyclictest7850irq/56-dwc_otg_11:50:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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