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2026-08-31 - 19:29

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 Mon Aug 31, 2026 12:43:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
127349910531050,3cyclictest19577-21kworker/1:1+events11:16:291
127349910531050,2cyclictest26651-21kworker/1:2+events11:01:501
127349910531049,2cyclictest30056-21kworker/1:2+events12:21:291
127349910531049,2cyclictest20298-21kworker/1:0+events11:26:171
127439910521050,2cyclictest3693-21kworker/3:2+events08:16:373
127439910521049,3cyclictest7895-21kworker/3:2+events10:45:453
127349910521049,2cyclictest19577-21kworker/1:1+events11:05:231
127439910511049,2cyclictest22483-21kworker/3:0+events12:30:463
127349910511048,2cyclictest20298-21kworker/1:0+events11:24:451
127439910501049,1cyclictest29571-21kworker/3:2+events09:46:383
127349910501048,2cyclictest26651-21kworker/1:2+events10:15:441
127439910491048,1cyclictest24685-21kworker/3:0+events09:41:073
127349910481046,2cyclictest8318-21kworker/1:0+events12:15:441
127349910481046,2cyclictest26651-21kworker/1:2+events11:12:551
127439910471044,3cyclictest17760-21kworker/3:2+events09:10:433
127439910391036,3cyclictest17760-21kworker/3:2+events09:20:213
127439910341031,3cyclictest17760-21kworker/3:2+events09:27:583
127439910311029,2cyclictest17760-21kworker/3:2+events09:05:223
127439910291027,2cyclictest7895-21kworker/3:2+events10:56:153
127439910291027,2cyclictest19961-21turbostat08:49:563
127439910291026,3cyclictest25983-21kworker/3:1+events10:40:443
127439910281025,3cyclictest25983-21kworker/3:1+events10:33:493
127439910281025,3cyclictest17760-21kworker/3:2+events09:31:063
127439910251022,3cyclictest7895-21kworker/3:2+events12:28:213
127439910251022,3cyclictest18603-21kworker/3:1+events08:06:083
127399910241022,2cyclictest10335-21kworker/2:1+events11:45:422
127319910231022,1cyclictest511-21kworker/0:2+events09:58:410
127319910231022,1cyclictest23570-21kworker/0:0+events10:25:410
127439910221020,2cyclictest12379-21kworker/3:2+events07:12:363
127439910211019,2cyclictest7895-21kworker/3:2+events10:38:463
127439910211019,2cyclictest11601-21kworker/3:0+events08:22:123
127399910211020,1cyclictest10335-21kworker/2:1+events11:44:552
127319910211020,1cyclictest18683-21kworker/0:1+events10:13:040
127439910201017,3cyclictest7895-21kworker/3:2+events10:54:053
127439910201016,4cyclictest25688-21turbostat10:19:553
127439910191017,2cyclictest10331-21kworker/3:0+events07:19:143
127439910191016,3cyclictest18603-21kworker/3:1+events08:11:053
127439910181016,2cyclictest17163-21kworker/3:1+events12:39:273
127319910171016,1cyclictest31089-21kworker/0:2+events10:22:120
127439910161014,2cyclictest17760-21kworker/3:2+events09:04:323
127439910161013,3cyclictest25983-21kworker/3:1+events09:39:443
127439910161013,3cyclictest11850-21turbostat10:04:553
127439910141011,3cyclictest10331-21kworker/3:0+events07:20:233
127439910131011,2cyclictest3374-21turbostat12:14:553
127439910131010,3cyclictest18603-21kworker/3:1+events08:03:513
127439910121009,3cyclictest11601-21kworker/3:0+events08:25:543
127439910081006,2cyclictest17760-21kworker/3:2+events09:17:183
127439910081006,2cyclictest13662-21kworker/3:1+events08:32:543
127319910051004,1cyclictest511-21kworker/0:2+events09:50:210
127439910031001,2cyclictest11601-21kworker/3:0+events08:38:173
127399910031002,1cyclictest27432-21kworker/2:2+events07:30:212
127439910021000,2cyclictest11601-21kworker/3:0+events08:40:233
12739991002999,3cyclictest31423-21turbostat10:59:552
127399910021001,1cyclictest20582-21kworker/2:2+events11:53:462
12739991001999,2cyclictest14666-21turbostat07:19:552
127399910011000,1cyclictest18699-21kworker/2:1+events07:26:282
1273999999998,1cyclictest24831-21kworker/2:0+events07:40:222
1273999997997,0cyclictest31232-21kworker/2:2+events11:32:402
1273499996994,2cyclictest917-21turbostat08:04:561
1273199995994,1cyclictest26905-21kworker/0:0+events12:05:540
1273999991990,1cyclictest5453-21kworker/2:0+events11:36:042
1273999989987,2cyclictest10335-21kworker/2:1+events11:57:472
1273999988987,1cyclictest18699-21kworker/2:1+events07:35:432
1274399987985,2cyclictest25246-21turbostat07:44:563
1274399978975,3cyclictest21103-21turbostat10:14:553
1273199975972,3cyclictest28037-21turbostat09:09:550
1273199968965,3cyclictest7958-21turbostat12:19:550
1273199966965,1cyclictest27513-21kworker/0:1+events07:46:160
1273199962960,2cyclictest5399-21turbostat08:14:560
1273199962960,2cyclictest15584-21kworker/0:1+events12:01:490
1273199958957,1cyclictest27513-21kworker/0:1+events07:58:190
1273199952951,1cyclictest511-21kworker/0:2+events10:02:200
1273199948947,1cyclictest511-21kworker/0:2+events10:08:180
1273199944943,1cyclictest2818-21kworker/0:0+events07:52:230
1273199941940,1cyclictest25642-21kworker/0:1+events08:59:370
1273199937936,1cyclictest15584-21kworker/0:1+events12:11:060
1273999930927,3cyclictest31299-21turbostat07:59:562
1273199929928,1cyclictest22212-21kworker/0:0+events08:52:120
1273199925922,3cyclictest7547-21turbostat10:34:550
1273999917915,2cyclictest26535-21turbostat12:04:552
1273499915912,2cyclictest16692-21turbostat07:24:561
1273199915914,1cyclictest21970-21turbostat11:59:550
1274399912908,4cyclictest26720-21turbostat11:29:553
1273499899896,3cyclictest23998-21turbostat08:59:561
1273499878877,1cyclictest17926-21turbostat08:44:561
1273499864861,2cyclictest2946-21turbostat10:29:541
1273199704700,4cyclictest19961-21turbostat08:49:560
1273199661658,3cyclictest25246-21turbostat07:44:560
1274399655652,3cyclictest12583-21turbostat12:24:553
1273499619618,1cyclictest31423-21turbostat10:59:551
1273199617615,2cyclictest30476-21turbostat09:49:550
1273499614612,2cyclictest3374-21turbostat12:14:551
1274399610606,2cyclictest23998-21turbostat08:59:563
1273999603602,1cyclictest16692-21turbostat07:24:562
1273499578576,2cyclictest21103-21turbostat10:14:551
1274399571569,2cyclictest2946-21turbostat10:29:553
1274399501500,1cyclictest31299-21turbostat07:59:563
1273199491488,3cyclictest25688-21turbostat10:19:550
1273999370369,1cyclictest26720-21turbostat11:29:552
12743992018,2cyclictest67750irq/123-lan11:33:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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