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2026-05-01 - 18:19

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #7

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 rack7slot7s.osadl.org (updated Fri May 01, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10004210464,36sleep00-21swapper/007:06:180
1017629380,9sleep20-21swapper/207:08:322
1011429266,9sleep30-21swapper/307:07:453
1000028564,6sleep10-21swapper/107:06:141
234502710,0sleep20-21swapper/209:40:342
1038699380,37cyclictest0-21swapper/210:55:222
1038699270,1cyclictest0-21swapper/210:35:522
10386992320,3cyclictest0-21swapper/210:20:422
1038699230,1cyclictest3183-21diskmemload10:52:032
1038399230,23cyclictest0-21swapper/110:43:571
1038199230,1cyclictest0-21swapper/009:34:040
10388992218,1cyclictest39-21ksoftirqd/310:08:133
10388992217,4cyclictest0-21swapper/310:13:493
1038699220,22cyclictest0-21swapper/211:19:022
1038699220,22cyclictest0-21swapper/210:29:032
1038399220,22cyclictest0-21swapper/109:53:491
10388992120,1cyclictest0-21swapper/310:38:453
10388992118,1cyclictest0-21swapper/310:41:183
1038899210,3cyclictest0-21swapper/311:41:093
10381992118,2cyclictest13-21ksoftirqd/010:50:190
10388992017,1cyclictest0-21swapper/310:30:203
10388992017,1cyclictest0-21swapper/310:26:293
10388992017,1cyclictest0-21swapper/310:22:303
1038699200,20cyclictest0-21swapper/211:23:032
1038399200,2cyclictest0-21swapper/109:13:501
1038399200,20cyclictest0-21swapper/112:25:191
10388991916,2cyclictest0-21swapper/310:48:063
1038699190,19cyclictest0-21swapper/210:43:422
1038399198,10cyclictest13011-21munin-node09:31:031
10383991919,0cyclictest0-21swapper/109:26:001
1038699180,17cyclictest0-21swapper/210:05:212
1038399185,12cyclictest20451-21sendmail_mailtr11:15:231
1038399180,18cyclictest0-21swapper/112:23:111
194792170,0sleep20-21swapper/212:32:172
10388991716,1cyclictest0-21swapper/309:00:143
10388991715,2cyclictest0-21swapper/310:19:343
1038899171,2cyclictest0-21swapper/311:03:583
10388991712,4cyclictest39-21ksoftirqd/309:21:403
1038899170,1cyclictest0-21swapper/311:16:333
1038399179,6cyclictest23986-21basename08:45:141
10383991716,1cyclictest0-21swapper/111:21:121
1038399170,14cyclictest0-21swapper/107:20:111
1038199170,2cyclictest0-21swapper/012:38:030
216672160,2chrt225-21systemd-journal09:59:590
10388991614,2cyclictest39-21ksoftirqd/312:04:453
10388991614,1cyclictest39-21ksoftirqd/311:51:523
1038899160,1cyclictest0-21swapper/311:30:043
1038699163,1cyclictest141rcu_preempt12:26:152
10383991615,1cyclictest0-21swapper/110:50:461
1038399160,15cyclictest0-21swapper/112:06:301
1038199165,6cyclictest6249-21munin-run12:25:000
1038199160,1cyclictest141rcu_preempt09:22:550
1038199160,11cyclictest29383-21fw_packets09:25:160
1038899158,5cyclictest39-21ksoftirqd/312:05:213
1038899157,7cyclictest31297-21latency_hist12:39:593
10388991514,1cyclictest391ksoftirqd/309:41:353
10388991511,3cyclictest39-21ksoftirqd/309:48:073
10388991511,3cyclictest22220-21ls11:55:183
10383991514,1cyclictest25-21ksoftirqd/109:40:041
10383991514,1cyclictest0-21swapper/110:33:131
10383991512,2cyclictest3183-21diskmemload10:37:221
1038399150,2cyclictest0-21swapper/110:08:341
1038399150,1cyclictest0-21swapper/111:08:381
1038399150,0cyclictest0-21swapper/110:49:521
1038199150,1cyclictest141rcu_preempt10:31:030
1038199150,1cyclictest0-21swapper/012:34:200
43432143,1sleep03183-21diskmemload10:08:340
1038899144,5cyclictest4106-21cron09:30:003
1038899141,8cyclictest4108-21kworker/u8:111:45:123
1038899141,10cyclictest0-21swapper/309:33:413
10388991410,3cyclictest39-21ksoftirqd/309:10:243
1038899140,14cyclictest0-21swapper/312:23:233
10386991411,2cyclictest24131-21grep07:35:252
10386991410,2cyclictest14229-21tr07:15:222
10383991412,2cyclictest0-21swapper/110:19:101
10383991412,2cyclictest0-21swapper/109:19:281
10383991411,3cyclictest0-21swapper/111:29:461
1038199143,6cyclictest31791-21ssh10:25:140
1038199141,7cyclictest161rcuc/009:45:260
10381991414,0cyclictest0-21swapper/011:01:540
10381991412,1cyclictest13-21ksoftirqd/010:40:200
10381991411,2cyclictest29294-21tune2fs08:55:150
10381991411,2cyclictest25329-21grep10:20:260
1038199140,3cyclictest0-21swapper/007:10:130
127902130,2sleep20-21swapper/212:09:392
1038899136,5cyclictest0-21swapper/311:20:143
1038899134,8cyclictest0-21swapper/309:05:133
10388991311,1cyclictest39-21ksoftirqd/309:15:203
10388991310,2cyclictest5546-21grep09:50:113
10388991310,2cyclictest39-21ksoftirqd/307:15:253
10388991310,2cyclictest3414-21wc11:05:213
10388991310,2cyclictest28879-21cut08:55:133
10388991310,2cyclictest21052-21systemctl08:40:013
10388991310,2cyclictest18380-21cut07:25:163
10388991310,2cyclictest10838-21grep11:10:143
10388991310,2cyclictest0-21swapper/312:15:093
1038699139,3cyclictest30522-21wc12:00:182
1038699137,5cyclictest11730-21cat11:10:192
1038699132,4cyclictest3183-21diskmemload12:39:592
10386991310,2cyclictest4293-21wc09:30:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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