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2026-08-06 - 01:49

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #4

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.
Unexpectedly long latencies may be caused by SMIs
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 rack0slot4s.osadl.org (updated Thu Aug 06, 2026 00:45:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30709622312305,5sleep90-21swapper/919:08:1015
30708292304297,5sleep50-21swapper/519:06:4711
30710032300295,3sleep100-21swapper/1019:08:442
30710012299290,6sleep80-21swapper/819:08:4214
30709552278270,5sleep20-21swapper/219:08:038
30707022250241,6sleep120-21swapper/1219:05:344
30709772227220,5sleep70-21swapper/719:08:2513
30709642202195,5sleep110-21swapper/1119:08:133
30707312200191,6sleep10-21swapper/119:05:551
30710402191184,5sleep40-21swapper/419:09:1010
30710322190183,5sleep130-21swapper/1319:09:025
30708972126122,2sleep150-21swapper/1519:07:287
30715849910817,29cyclictest0-21swapper/919:43:0015
3070871210195,4sleep140-21swapper/1419:07:116
307101629996,2sleep30-21swapper/319:08:529
307092429792,3sleep00-21swapper/019:07:460
3071582999466,0cyclictest0-21swapper/819:43:0214
3071589999133,30cyclictest0-21swapper/1119:43:013
3071604999031,30cyclictest0-21swapper/1519:43:017
307083028986,1sleep60-21swapper/619:06:4812
3071561998180,1cyclictest3318-21Xorg19:43:011
33974582680,0sleep40-21swapper/400:04:5110
3071556996117,44cyclictest0-21swapper/019:43:020
3071587995610,46cyclictest0-21swapper/1019:43:012
3071604995252,0cyclictest3065562-1kworker/u33:2+i915_flip23:41:227
3071602995151,0cyclictest0-21swapper/1421:19:566
3071587994842,6cyclictest0-21swapper/1020:40:492
3071563994544,1cyclictest3318-21Xorg19:43:008
3071577994241,1cyclictest3126045-21kworker/u32:5+events_unbound21:05:1813
3071566994039,1cyclictest3318-21Xorg19:43:019
307156999369,27cyclictest0-21swapper/422:17:1110
3071602993534,1cyclictest3249448-21kworker/u32:4+events_unbound23:00:166
3071577993532,2cyclictest3126045-21kworker/u32:5+events_unbound21:04:1413
3071561993532,2cyclictest3414437-21kworker/u32:2+events_unbound00:30:201
3071561993532,2cyclictest3414437-21kworker/u32:2+events_unbound00:30:191
3071593993434,0cyclictest0-21swapper/1222:16:524
3071569993434,0cyclictest0-21swapper/421:58:2210
307156399340,33cyclictest0-21swapper/219:30:358
307160299339,11cyclictest0-21swapper/1423:45:376
307160299339,11cyclictest0-21swapper/1423:34:396
3071569993333,0cyclictest0-21swapper/422:14:4610
3071569993333,0cyclictest0-21swapper/421:23:5210
3071569993333,0cyclictest0-21swapper/421:12:5910
307156999333,30cyclictest0-21swapper/420:20:3710
3071569993333,0cyclictest0-21swapper/400:30:2710
3071569993333,0cyclictest0-21swapper/400:30:2610
3071569993333,0cyclictest0-21swapper/400:10:4510
3071563993328,4cyclictest3246372-21mii-tool22:05:158
3071602993221,11cyclictest618598-21thunderbird23:23:396
3071593993232,0cyclictest0-21swapper/1223:29:114
3071587993229,1cyclictest2946595-21kworker/10:1+events20:21:292
307157799324,28cyclictest871ktimers/721:32:0013
307156999323,29cyclictest61-21ksoftirqd/419:10:0510
3071569993232,0cyclictest0-21swapper/422:25:5510
3071569993232,0cyclictest0-21swapper/419:19:5010
3071569993232,0cyclictest0-21swapper/400:20:3910
3071569993231,1cyclictest0-21swapper/400:38:2910
3071569993231,1cyclictest0-21swapper/400:38:2810
307156399320,1cyclictest0-21swapper/219:24:248
3071602993131,0cyclictest3004332-1kworker/u33:1+i915_flip21:05:266
3071602993130,1cyclictest1774-21snmpd23:12:486
3071602993130,1cyclictest1774-21snmpd20:32:196
3071593993130,1cyclictest3088772-21kworker/u32:2+events_unbound19:31:244
3071593993130,1cyclictest1774-21snmpd23:19:434
3071593993130,1cyclictest1774-21snmpd20:10:594
307158999310,31cyclictest618598-21thunderbird23:46:413
3071587993130,1cyclictest3327144-21kworker/10:0+events23:33:492
3071587993130,1cyclictest3327144-21kworker/10:0+events00:01:432
3071587993130,1cyclictest3148038-21kworker/10:2+events20:53:442
3071587993129,1cyclictest3282243-21kworker/10:1+events22:45:272
3071587993129,1cyclictest3211043-21kworker/10:2+events21:42:362
3071587993129,1cyclictest3211043-21kworker/10:2+events21:42:352
3071587993129,1cyclictest3148038-21kworker/10:2+events21:02:312
3071587993129,1cyclictest3148038-21kworker/10:2+events20:47:102
3071587993129,1cyclictest2946595-21kworker/10:1+events20:31:582
3071587993129,1cyclictest2946595-21kworker/10:1+events20:26:292
3071577993129,2cyclictest0-21swapper/719:15:1613
3071577993124,5cyclictest0-21swapper/722:49:4213
307157799311,30cyclictest871ktimers/721:13:0013
3071569993131,0cyclictest0-21swapper/423:16:3710
3071569993131,0cyclictest0-21swapper/421:49:1010
3071569993131,0cyclictest0-21swapper/419:40:4210
307156999312,29cyclictest591rcuc/422:55:1510
307156699310,28cyclictest0-21swapper/320:25:159
3071563993128,3cyclictest3303958-21mii-tool22:50:148
307156399310,15cyclictest0-21swapper/222:02:108
3071604993029,1cyclictest0-21swapper/1519:20:307
307160499300,30cyclictest0-21swapper/1520:46:187
307160499300,30cyclictest0-21swapper/1500:14:577
307160499300,30cyclictest0-21swapper/1500:02:067
307160499300,29cyclictest0-21swapper/1522:10:437
3071602993029,1cyclictest3367955-21mii-tool23:40:146
3071602993029,1cyclictest3121041-21ethtool20:05:186
3071602993029,1cyclictest1774-21snmpd20:00:536
3071602993029,1cyclictest1774-21snmpd19:16:546
3071602993029,1cyclictest0-21swapper/1422:46:266
3071602993010,19cyclictest0-21swapper/1419:22:016
307159899300,30cyclictest0-21swapper/1323:28:465
307159899300,30cyclictest0-21swapper/1322:45:535
3071593993029,1cyclictest3323186-21mii-tool23:05:134
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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