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2026-09-10 - 02:47

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, 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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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 rack8slot6s.osadl.org (updated Thu Sep 10, 2026 00:43:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
55559910481047,1cyclictest17181-21kworker/3:1+events23:44:063
55529910451043,2cyclictest21623-21kworker/2:0+events21:48:142
55529910411040,1cyclictest31219-21kworker/2:2+events21:11:392
55529910411040,1cyclictest21623-21kworker/2:0+events21:41:242
55529910401039,1cyclictest22401-21kworker/2:1+events21:19:312
55529910391038,1cyclictest31219-21kworker/2:2+events21:28:082
55479910371035,2cyclictest31176-21turbostat00:29:551
55559910351033,2cyclictest15231-21kworker/3:2+events20:34:383
55529910241023,1cyclictest22401-21kworker/2:1+events21:23:492
55559910231022,1cyclictest7827-21kworker/3:1+events20:46:053
55559910221021,1cyclictest17181-21kworker/3:1+events23:46:513
55559910221021,1cyclictest15629-21kworker/3:2+events20:56:273
55559910211020,1cyclictest29451-21kworker/3:0+events23:55:213
55559910211020,1cyclictest22789-21kworker/3:2+events22:33:243
55559910211019,2cyclictest22789-21kworker/3:2+events22:16:373
55559910201018,2cyclictest32136-21kworker/3:0+events20:19:533
55559910191017,2cyclictest21924-21kworker/3:0+events22:51:393
55529910181015,3cyclictest20048-21turbostat22:14:542
55559910061004,2cyclictest16065-21turbostat21:39:543
55559910061004,1cyclictest7010-21kworker/3:1+events22:36:073
55559910051004,1cyclictest7231-21kworker/3:1+events00:02:333
55479910051003,2cyclictest27206-21turbostat23:54:541
55559910031002,1cyclictest5695-21kworker/3:2+events23:53:493
55559910031002,1cyclictest23151-21kworker/3:0+events00:16:373
55559910031002,1cyclictest18398-21kworker/3:1+events19:14:003
55559910031002,1cyclictest17588-21kworker/3:2+events00:11:363
55559910031002,1cyclictest16047-21kworker/3:1+events23:16:063
55559910021001,1cyclictest32136-21kworker/3:0+events20:51:063
55559910021001,1cyclictest31946-21kworker/3:2+events22:59:023
55479910021001,1cyclictest27497-21kworker/1:0+events20:04:241
5543991002999,3cyclictest29717-21turbostat20:14:540
55559910011000,1cyclictest7827-21kworker/3:1+events20:43:393
55559910011000,1cyclictest7010-21kworker/3:1+events22:49:103
55479910011000,1cyclictest11424-21kworker/1:0+events21:37:461
5555991000999,1cyclictest7725-21kworker/3:0+events19:30:213
5547991000999,1cyclictest27497-21kworker/1:0+events20:07:341
5547991000999,1cyclictest19283-21kworker/1:0+events19:44:241
555599999998,1cyclictest5695-21kworker/3:2+events23:30:523
555599999998,1cyclictest1791-21kworker/3:2+events00:27:313
555599999998,1cyclictest11702-21kworker/3:1+events22:07:173
554799999998,1cyclictest21329-21kworker/1:1+events19:52:341
555599998997,1cyclictest19745-21kworker/3:2+events22:00:233
555599998996,2cyclictest16047-21kworker/3:1+events23:28:483
555599997996,1cyclictest31946-21kworker/3:2+events23:07:023
555599997996,1cyclictest31594-21kworker/3:0+events22:27:143
555599997996,1cyclictest31594-21kworker/3:0+events22:13:133
554799997996,1cyclictest21329-21kworker/1:1+events19:55:441
555599996995,1cyclictest7231-21kworker/3:1+events00:07:343
555599996995,1cyclictest18398-21kworker/3:1+events19:16:083
555599996995,1cyclictest18398-21kworker/3:1+events19:16:073
554799996995,1cyclictest32023-21kworker/1:2+events20:14:381
555599995995,0cyclictest10548-21kworker/3:0+events23:14:023
555599995994,1cyclictest7827-21kworker/3:1+events21:00:423
555599995994,1cyclictest16047-21kworker/3:1+events23:21:283
555599994993,1cyclictest7725-21kworker/3:0+events19:20:233
555599994993,1cyclictest5695-21kworker/3:2+events23:37:563
555599994993,1cyclictest22789-21kworker/3:2+events22:21:483
555599994993,1cyclictest19745-21kworker/3:2+events21:50:203
555599993992,1cyclictest4968-21kworker/3:1+events23:00:533
555599993992,1cyclictest31594-21kworker/3:0+events21:59:193
555599993992,1cyclictest19745-21kworker/3:2+events21:05:443
555599993992,1cyclictest15231-21kworker/3:2+events20:25:433
554799993992,1cyclictest29555-21kworker/1:1+events21:33:381
555599992991,1cyclictest18398-21kworker/3:1+events19:28:153
555599991988,1cyclictest7010-21kworker/3:1+events22:44:513
554799991990,1cyclictest16130-21kworker/1:1+events19:36:291
555599990990,0cyclictest7827-21kworker/3:1+events20:35:443
554399989987,2cyclictest22353-21kworker/0:0+events00:31:490
555599988987,1cyclictest23151-21kworker/3:0+events00:23:483
554799987985,1cyclictest30960-21kworker/1:2+events19:46:281
555599981980,1cyclictest15231-21kworker/3:2+events20:21:073
554799970968,2cyclictest9605-21turbostat00:39:561
554799962960,2cyclictest25978-21turbostat00:24:561
554799962959,3cyclictest28432-21turbostat23:24:551
554399958956,2cyclictest31670-21turbostat21:54:550
554799942940,2cyclictest5838-21turbostat20:34:551
554799896893,3cyclictest15615-21turbostat00:14:551
554399892891,1cyclictest22353-21kworker/0:0+events00:38:570
554399854852,2cyclictest26467-21turbostat21:49:550
554399694692,2cyclictest31176-21turbostat00:29:560
555599643640,3cyclictest29717-21turbostat20:14:553
554799636633,3cyclictest13558-21turbostat19:34:551
554799628626,1cyclictest5688-21turbostat21:29:551
555299585582,3cyclictest19990-21turbostat21:09:552
555299520519,1cyclictest16065-21turbostat21:39:542
555599512511,1cyclictest9605-21turbostat00:39:563
555599495494,1cyclictest26467-21turbostat21:49:553
555299810,80cyclictest27375-21ssh22:15:432
5547992020,0cyclictest18091-21kworker/1:2+events_freezable22:13:111
5547992020,0cyclictest18091-21kworker/1:2+events_freezable00:31:221
5547992019,1cyclictest18091-21kworker/1:2+events_freezable23:46:491
5547991919,0cyclictest67750irq/123-lan19:20:071
5547991918,1cyclictest67750irq/123-lan22:40:191
5547991918,1cyclictest67750irq/123-lan22:36:031
5547991918,1cyclictest67750irq/123-lan22:09:061
5547991818,0cyclictest784-21snmpd23:25:321
5547991818,0cyclictest784-21snmpd21:52:251
5547991818,0cyclictest784-21snmpd21:43:331
5547991818,0cyclictest67750irq/123-lan23:55:341
5547991818,0cyclictest67750irq/123-lan23:17:381
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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