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2026-01-01 - 11:51

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 Thu Jan 01, 2026 00:59:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
242069912471238,6cyclictest0-21swapper/119:25:121
242069911911163,24cyclictest30456-21munin-run19:40:001
240712565518,32sleep10-21swapper/119:24:091
239802514470,29sleep00-21swapper/019:23:120
2420599246212,17cyclictest0-21swapper/019:25:120
2420599170147,8cyclictest0-21swapper/019:40:000
2890221220,21sleep122-21ksoftirqd/123:53:251
121552480,8sleep12420699cyclictest20:15:231
24205994524,5cyclictest3-21ksoftirqd/023:35:260
24205994524,5cyclictest3-21ksoftirqd/022:44:420
2420599448,32cyclictest0-21swapper/021:14:160
24205994225,6cyclictest3-21ksoftirqd/023:34:030
24205994225,6cyclictest3-21ksoftirqd/023:34:020
24205994223,9cyclictest3-21ksoftirqd/023:21:190
24205994222,5cyclictest3-21ksoftirqd/021:19:170
24205994220,11cyclictest3-21ksoftirqd/023:47:330
24205994210,3cyclictest0-21swapper/023:42:550
119692420,3sleep00-21swapper/000:10:200
265092400,4sleep0111rcuc/023:50:280
2420699409,27cyclictest0-21swapper/122:20:361
24205994024,5cyclictest3-21ksoftirqd/022:16:140
24205994023,6cyclictest3-21ksoftirqd/021:37:170
24205994023,5cyclictest3-21ksoftirqd/021:07:460
24205994023,5cyclictest3-21ksoftirqd/000:01:180
2420599396,29cyclictest0-21swapper/000:06:550
24205993928,7cyclictest0-21swapper/021:49:350
24205993924,5cyclictest3-21ksoftirqd/023:20:010
24205993922,8cyclictest3-21ksoftirqd/022:20:520
24205993922,6cyclictest3-21ksoftirqd/022:54:440
24205993921,6cyclictest3-21ksoftirqd/000:24:510
24205993919,5cyclictest3-21ksoftirqd/021:27:190
24205993918,11cyclictest3-21ksoftirqd/000:18:030
2420599391,19cyclictest30960-21fschecks_count00:30:160
320612381,33sleep132075-21ssh23:56:011
2420599387,28cyclictest0-21swapper/021:30:550
24205993822,5cyclictest3-21ksoftirqd/023:07:160
24205993821,6cyclictest3-21ksoftirqd/020:51:560
24205993821,6cyclictest3-21ksoftirqd/019:52:450
24205993820,6cyclictest3-21ksoftirqd/023:10:260
24205993820,6cyclictest3-21ksoftirqd/020:05:240
2420599381,33cyclictest1968-21lldpad22:56:390
24205993812,7cyclictest3-21ksoftirqd/000:35:180
205552381,33sleep120691-21grep23:10:461
134002381,4sleep013411-21ssh23:04:070
24205993722,5cyclictest3-21ksoftirqd/023:57:180
24205993722,5cyclictest3-21ksoftirqd/020:14:510
24205993721,5cyclictest3-21ksoftirqd/022:34:170
24205993721,5cyclictest3-21ksoftirqd/022:13:220
24205993721,5cyclictest3-21ksoftirqd/022:13:220
24205993716,5cyclictest3-21ksoftirqd/022:03:560
2420699366,26cyclictest16383-21diskstats00:15:161
24205993621,5cyclictest3-21ksoftirqd/023:26:070
24205993621,5cyclictest3-21ksoftirqd/021:23:310
24205993620,6cyclictest3-21ksoftirqd/020:45:050
24205993619,6cyclictest3-21ksoftirqd/021:51:420
2420699352,8cyclictest0-21swapper/123:03:151
2420699351,5cyclictest2403-21irqbalance00:52:361
2420699351,30cyclictest12993-21tune2fs00:45:151
24205993520,5cyclictest3-21ksoftirqd/022:28:550
24205993520,5cyclictest3-21ksoftirqd/000:42:100
24205993520,5cyclictest3-21ksoftirqd/000:42:100
24205993520,4cyclictest3-21ksoftirqd/022:50:010
24205993519,5cyclictest3-21ksoftirqd/021:43:560
24205993519,5cyclictest3-21ksoftirqd/020:57:370
24205993518,6cyclictest3-21ksoftirqd/000:54:000
24205993517,8cyclictest3-21ksoftirqd/022:38:530
129872351,30sleep112998-21ssh23:36:211
2420699344,5cyclictest81rcu_preempt00:24:131
2420699344,4cyclictest32004-21diskmemload22:18:031
2420699342,4cyclictest81rcu_preempt21:50:261
24206993424,6cyclictest9639-21ssh00:08:071
2420699342,28cyclictest0-21swapper/100:39:561
2420699341,5cyclictest81rcu_preempt21:40:281
2420699341,29cyclictest18241-21seq23:41:551
24205993427,5cyclictest0-21swapper/021:58:150
24205993419,4cyclictest3-21ksoftirqd/022:05:280
24205993418,5cyclictest3-21ksoftirqd/021:01:010
24205993417,5cyclictest3-21ksoftirqd/000:46:150
2420599341,5cyclictest29557-21sh00:28:560
17392341,9sleep00-21swapper/019:49:430
109372343,27sleep10-21swapper/120:11:281
285292331,4sleep128537-21ssh22:12:341
285292331,4sleep128537-21ssh22:12:331
2420699339,6cyclictest0-21swapper/123:45:501
2420699334,4cyclictest81rcu_preempt00:13:571
24205993318,5cyclictest3-21ksoftirqd/020:35:120
24205993317,5cyclictest3-21ksoftirqd/020:33:480
2420599331,30cyclictest0-21swapper/020:22:150
2420599331,30cyclictest0-21swapper/020:22:150
2420599331,30cyclictest0-21swapper/020:15:360
2420599331,30cyclictest0-21swapper/019:55:360
227412331,28sleep122757-21diskstats22:40:161
16292331,4sleep130497-21gdbus19:48:331
297642321,5sleep129778-21ntp_states23:20:261
2420699324,4cyclictest81rcu_preempt21:19:271
2420699324,4cyclictest81rcu_preempt21:10:091
2420699324,4cyclictest81rcu_preempt20:52:181
2420699323,6cyclictest0-21swapper/123:33:161
2420699323,6cyclictest0-21swapper/123:33:151
2420699321,4cyclictest81rcu_preempt23:07:271
2420699321,4cyclictest81rcu_preempt22:33:221
2420699321,28cyclictest0-21swapper/122:04:061
2420699321,10cyclictest0-21swapper/122:56:441
2420599325,17cyclictest3302-21runrttasks20:00:200
24205993216,6cyclictest3-21ksoftirqd/019:31:370
135132321,5sleep10-21swapper/121:24:041
318972311,3sleep131906-21users19:40:351
2420699315,4cyclictest81rcu_preempt20:43:101
2420699315,4cyclictest81rcu_preempt20:28:421
2420699314,4cyclictest81rcu_preempt22:29:171
2420699313,4cyclictest81rcu_preempt23:26:421
2420699313,4cyclictest81rcu_preempt21:37:331
2420699312,4cyclictest81rcu_preempt22:08:441
2420699311,4cyclictest81rcu_preempt22:38:221
2420699311,3cyclictest0-21swapper/119:55:161
24206993113,6cyclictest207942cut20:40:001
2420699311,28cyclictest0-21swapper/120:47:151
2420699311,27cyclictest0-21swapper/100:29:561
2420699311,19cyclictest0-21swapper/121:34:171
24205993116,5cyclictest3-21ksoftirqd/020:44:020
321262301,5sleep00-21swapper/019:42:440
2420699308,7cyclictest15068-21cron20:25:001
2420699308,7cyclictest15068-21cron20:24:591
2420699304,4cyclictest81rcu_preempt21:01:371
2420699304,22cyclictest0-21swapper/121:59:121
2420699302,4cyclictest81rcu_preempt00:30:501
2420699301,6cyclictest0-21swapper/121:47:151
2420699301,5cyclictest0-21swapper/122:52:381
2420699301,4cyclictest81rcu_preempt21:08:511
2420699301,26cyclictest111-21usb-storage23:19:161
92892291,5sleep10-21swapper/120:08:501
74262291,5sleep10-21swapper/120:03:561
30452291,3sleep13125-21timerandwakeup19:50:261
283712291,5sleep10-21swapper/119:32:541
2420699292,12cyclictest27599-21df_inode22:45:151
2420699291,4cyclictest81rcu_preempt00:42:511
2420699291,4cyclictest81rcu_preempt00:42:501
2420699283,4cyclictest81rcu_preempt20:57:591
2420699281,4cyclictest81rcu_preempt21:27:281
2420699274,8cyclictest3098-21diskstats00:00:171
2420599272,13cyclictest0-21swapper/020:25:070
2420699262,9cyclictest18358-21users20:30:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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