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2026-03-31 - 20:26

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, 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 376 highest latencies:
System rack9slot4s (updated Tue Mar 31, 2026 12:59:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
258569912151205,7cyclictest0-21swapper/107:28:021
258559910901079,8cyclictest0-21swapper/007:27:360
249232577531,30sleep00-21swapper/007:20:240
256192561518,29sleep10-21swapper/107:23:051
73221060,2sleep00-21swapper/011:55:280
305812850,9sleep02585599cyclictest10:45:350
78882620,6sleep02585599cyclictest12:36:120
182542600,4sleep10-21swapper/112:47:461
2585699475,38cyclictest0-21swapper/109:56:161
25855994523,10cyclictest0-21swapper/009:26:350
2585599441,5cyclictest81rcu_preempt10:36:500
25855994325,6cyclictest3-21ksoftirqd/011:29:270
25855994221,10cyclictest3-21ksoftirqd/010:25:010
25855994121,5cyclictest3-21ksoftirqd/010:56:160
25855994121,5cyclictest3-21ksoftirqd/010:43:000
294782400,4sleep122-21ksoftirqd/111:51:511
2585599408,4cyclictest3-21ksoftirqd/009:06:100
2585599402,35cyclictest0-21swapper/012:23:160
25855993923,5cyclictest3-21ksoftirqd/012:10:320
25855993923,5cyclictest3-21ksoftirqd/012:10:320
25855993919,8cyclictest3-21ksoftirqd/010:08:560
25855993919,5cyclictest3-21ksoftirqd/012:25:540
25855993919,5cyclictest3-21ksoftirqd/011:32:270
241112391,4sleep124211-21unixbench_singl10:05:311
2585599382,6cyclictest19260-21diskstats12:15:160
25855993824,4cyclictest3-21ksoftirqd/011:10:250
25855993823,5cyclictest3-21ksoftirqd/012:50:230
25855993819,9cyclictest3-21ksoftirqd/011:05:500
25855993819,9cyclictest3-21ksoftirqd/010:31:490
2585699376,4cyclictest81rcu_preempt12:50:261
25856993729,5cyclictest0-21swapper/111:15:361
25855993722,5cyclictest3-21ksoftirqd/010:21:480
25855993722,5cyclictest3-21ksoftirqd/010:13:100
25855993719,8cyclictest3-21ksoftirqd/009:23:150
131662371,32sleep030497-21gdbus08:14:360
131662371,32sleep030497-21gdbus08:14:350
2585699364,4cyclictest81rcu_preempt12:30:171
2585699364,26cyclictest29138-21iostat_ios07:30:201
2585699362,5cyclictest0-21swapper/110:42:151
2585699362,30cyclictest0-21swapper/111:28:551
2585699362,16cyclictest0-21swapper/109:29:271
2585699361,9cyclictest0-21swapper/111:12:561
2585699361,31cyclictest0-21swapper/111:36:551
25855993628,4cyclictest26064-21fschecks_time11:15:160
25855993621,4cyclictest3-21ksoftirqd/012:41:020
25855993620,5cyclictest3-21ksoftirqd/010:19:550
25855993616,5cyclictest3-21ksoftirqd/009:57:550
25855993612,8cyclictest3-21ksoftirqd/011:52:000
203442361,4sleep020348-21pidof08:31:000
92402351,4sleep09271-21ntp_states09:50:260
35612351,31sleep03572-21ssh10:51:200
271472351,30sleep027151-21irqstats08:50:190
2585699355,17cyclictest0-21swapper/110:51:321
2585699354,4cyclictest81rcu_preempt10:55:371
25855993522,4cyclictest3-21ksoftirqd/011:03:400
25855993520,5cyclictest3-21ksoftirqd/012:33:540
25855993520,5cyclictest3-21ksoftirqd/009:19:440
25855993519,5cyclictest3-21ksoftirqd/011:46:490
25855993519,5cyclictest3-21ksoftirqd/009:45:120
25855993519,5cyclictest3-21ksoftirqd/009:33:370
25855993518,6cyclictest3-21ksoftirqd/012:01:280
25855993515,5cyclictest0-21swapper/009:42:430
2585699344,4cyclictest81rcu_preempt12:01:461
2585699343,4cyclictest81rcu_preempt11:58:251
2585699343,4cyclictest81rcu_preempt11:03:111
2585699343,3cyclictest81rcu_preempt11:47:501
25856993427,5cyclictest22-21ksoftirqd/111:05:121
25856993425,5cyclictest12142-21hddtemp_smartct09:20:171
25856993414,16cyclictest25017-21ssh09:33:491
2585699341,22cyclictest0-21swapper/109:12:051
25855993419,5cyclictest3-21ksoftirqd/012:05:100
25855993419,5cyclictest3-21ksoftirqd/011:40:580
25855993418,6cyclictest3-21ksoftirqd/009:10:400
2585599341,7cyclictest2032-21wget07:45:110
2585699338,4cyclictest81rcu_preempt09:53:041
2585699333,4cyclictest81rcu_preempt12:07:551
2585699333,4cyclictest81rcu_preempt10:45:031
2585699333,4cyclictest81rcu_preempt10:21:061
2585699332,4cyclictest81rcu_preempt09:19:411
2585699331,5cyclictest1968-21lldpad11:44:311
2585699331,30cyclictest0-21swapper/112:16:161
2585699331,30cyclictest0-21swapper/107:53:361
2585699331,29cyclictest24180-21fschecks_count12:20:161
2585699331,29cyclictest0-21swapper/112:41:351
25856993310,9cyclictest29017-21fschecks_count12:25:161
2585599337,4cyclictest81rcu_preempt11:35:220
2585599334,4cyclictest81rcu_preempt11:20:130
2585599333,4cyclictest81rcu_preempt08:20:240
2585599331,5cyclictest21134-21ssh10:02:590
2585599331,30cyclictest0-21swapper/007:58:350
2585599331,29cyclictest0-21swapper/008:18:550
14812331,4sleep11493-21ssh10:15:341
2585699325,4cyclictest81rcu_preempt10:39:151
2585699325,3cyclictest81rcu_preempt07:38:131
2585699322,27cyclictest0-21swapper/110:29:351
2585699321,4cyclictest81rcu_preempt09:45:261
2585699321,4cyclictest81rcu_preempt08:06:341
25856993211,6cyclictest22-21ksoftirqd/111:23:371
2585599321,5cyclictest0-21swapper/008:47:360
162762321,5sleep10-21swapper/112:11:341
162762321,5sleep10-21swapper/112:11:331
87532310,4sleep0111rcuc/008:00:270
308812311,26sleep130891-21ssh09:40:051
25856993123,6cyclictest0-21swapper/111:34:561
2585699312,18cyclictest0-21swapper/109:39:201
2585699311,4cyclictest81rcu_preempt10:33:441
2585699311,4cyclictest81rcu_preempt08:55:221
2585699311,4cyclictest81rcu_preempt08:45:411
2585699311,26cyclictest1968-21lldpad10:04:581
2585599314,13cyclictest2206-21dbus-daemon07:34:570
25855993115,4cyclictest3-21ksoftirqd/008:28:020
25855993114,6cyclictest3-21ksoftirqd/007:36:070
25855993113,9cyclictest3-21ksoftirqd/012:46:250
2585599311,15cyclictest28465-21ssh09:36:480
78062301,5sleep10-21swapper/112:36:061
2585699305,4cyclictest81rcu_preempt08:25:301
2585699301,5cyclictest0-21swapper/107:43:351
2585699301,26cyclictest0-21swapper/110:11:351
2585699301,26cyclictest0-21swapper/109:08:351
2585599303,14cyclictest589-21apt-get07:40:310
25855993014,5cyclictest3-21ksoftirqd/008:59:070
25855993012,5cyclictest4657-21memory07:50:210
2585699297,4cyclictest81rcu_preempt08:34:161
2585699293,4cyclictest81rcu_preempt08:41:011
2585699293,4cyclictest81rcu_preempt08:17:481
25856992921,6cyclictest0-21swapper/108:01:551
25856992920,6cyclictest16478-21grep08:20:291
2585699291,8cyclictest6032-21sort07:55:111
25855992912,5cyclictest9917-21diskstats08:05:140
241402291,5sleep00-21swapper/008:41:120
2585699283,16cyclictest0-21swapper/109:01:091
2585699281,13cyclictest22619-21turbostat.cron08:40:001
2585599283,4cyclictest81rcu_preempt09:02:560
34732271,5sleep10-21swapper/107:46:351
2585699273,4cyclictest81rcu_preempt08:14:191
2585699273,4cyclictest81rcu_preempt08:14:191
224272271,5sleep00-21swapper/008:38:070
2585699263,4cyclictest81rcu_preempt08:53:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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