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2026-05-29 - 22:27

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #a, slot #8

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 rackaslot8s.osadl.org (updated Fri May 29, 2026 12:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
246382183101,25sleep20-21swapper/207:08:342
24557217597,24sleep30-21swapper/307:07:313
246622140104,25sleep10-21swapper/107:08:541
245222136100,26sleep00-21swapper/007:07:040
2522699124119,3cyclictest28664-21lspci11:30:411
235522620,1sleep20-21swapper/212:15:122
188262570,1sleep20-21swapper/209:48:202
92582560,1sleep10-21swapper/111:17:001
74302560,2sleep00-21swapper/010:04:070
319922540,1sleep30-21swapper/310:21:393
168922540,1sleep30-21swapper/310:10:243
19912530,2sleep20-21swapper/212:22:542
125532520,2sleep10-21swapper/110:07:291
170752510,1sleep00-21swapper/011:45:410
69312490,9sleep228-21ksoftirqd/210:03:372
39322490,1sleep30-21swapper/310:49:373
21222480,1sleep00-21swapper/009:11:430
59452470,1sleep10-21swapper/112:01:221
105362460,1sleep30-21swapper/309:18:233
211502430,1sleep20-21swapper/212:36:482
187072390,2chrt0-21swapper/312:35:153
289992330,10sleep334-21ksoftirqd/309:55:243
325142320,1sleep20-21swapper/210:45:462
269072320,4sleep00-21swapper/009:54:400
53692310,2chrt0-21swapper/112:25:181
196382300,2chrt0-21swapper/210:12:522
291402290,2sleep10-21swapper/110:44:091
2522699298,9cyclictest22-21ksoftirqd/110:18:021
25226992924,3cyclictest211rcuc/110:27:531
25226992924,3cyclictest211rcuc/109:45:521
25225992922,5cyclictest25187-21packagekitd07:10:000
111642290,1sleep30-21swapper/311:18:553
2522699289,9cyclictest22-21ksoftirqd/109:40:041
2522699289,8cyclictest22-21ksoftirqd/110:24:511
2522699288,10cyclictest22-21ksoftirqd/112:13:581
2522699286,9cyclictest22-21ksoftirqd/111:11:051
2522699286,8cyclictest22-21ksoftirqd/110:55:001
2522699284,8cyclictest22-21ksoftirqd/111:04:211
2523299271,9cyclictest21385-21basename11:49:593
25232992716,9cyclictest7118-21ssh12:26:173
25232992714,11cyclictest34-21ksoftirqd/311:55:003
2522699279,4cyclictest22-21ksoftirqd/111:41:541
2522699278,9cyclictest22-21ksoftirqd/110:39:331
2522699278,9cyclictest22-21ksoftirqd/109:27:041
2522699274,10cyclictest22-21ksoftirqd/112:15:571
2522699272,4cyclictest221ksoftirqd/110:45:171
2522699271,8cyclictest22-21ksoftirqd/109:20:101
114792270,8sleep228-21ksoftirqd/211:19:132
38282260,2sleep10-21swapper/111:36:061
2523299267,17cyclictest24529-21perf11:04:593
2523299261,24cyclictest0-21swapper/307:13:153
2522699269,8cyclictest22-21ksoftirqd/111:56:351
2522699269,8cyclictest22-21ksoftirqd/111:56:341
2522699269,8cyclictest22-21ksoftirqd/109:31:481
2522699268,11cyclictest22-21ksoftirqd/110:34:541
2522699267,9cyclictest22-21ksoftirqd/111:53:121
2522699267,9cyclictest22-21ksoftirqd/109:59:111
2522699267,10cyclictest22-21ksoftirqd/112:36:001
2522699266,7cyclictest22-21ksoftirqd/110:01:101
2522699265,9cyclictest22-21ksoftirqd/111:20:011
2522699263,12cyclictest22-21ksoftirqd/112:20:371
25226992622,3cyclictest211rcuc/111:26:171
2522699260,7cyclictest22-21ksoftirqd/112:05:071
151942260,5sleep334-21ksoftirqd/309:21:163
73802250,1sleep30-21swapper/310:27:453
25232992512,11cyclictest34-21ksoftirqd/312:20:003
25232992511,11cyclictest21133-21ssh10:37:523
2522999251,23cyclictest0-21swapper/207:12:562
2522699257,9cyclictest22-21ksoftirqd/108:01:121
2522699256,9cyclictest22-21ksoftirqd/112:31:331
2522699256,9cyclictest22-21ksoftirqd/110:12:051
2522699256,9cyclictest22-21ksoftirqd/109:19:421
2522699256,8cyclictest22-21ksoftirqd/109:36:221
2522699252,7cyclictest22-21ksoftirqd/111:05:141
2522699250,24cyclictest0-21swapper/107:13:141
2522599251,5cyclictest17767-21sed12:35:000
2523299244,16cyclictest3144-21cron07:45:003
2523299241,6cyclictest10364-21df12:05:143
25232992415,6cyclictest31643-21grep09:10:123
25232992415,6cyclictest21996-21ntp_states09:50:203
2523299241,12cyclictest38272ssh11:36:063
25229992418,4cyclictest4514-21cstates07:50:092
2522699248,8cyclictest22-21ksoftirqd/111:48:131
2522699247,9cyclictest22-21ksoftirqd/109:12:191
2522699244,7cyclictest22-21ksoftirqd/110:56:271
2522699244,4cyclictest22-21ksoftirqd/107:50:001
25226992417,5cyclictest22-21ksoftirqd/108:25:001
2522699240,8cyclictest22-21ksoftirqd/107:40:211
2522599242,15cyclictest16995-21ssh10:35:120
25225992416,6cyclictest13944-21ssh11:44:290
25225992413,8cyclictest12427-21df_inode08:15:120
210192240,1sleep30-21swapper/309:25:253
207452240,2sleep00-21swapper/010:13:580
312482230,2sleep00-21swapper/011:32:480
2523299231,7cyclictest0-21swapper/311:55:133
2523299231,7cyclictest0-21swapper/311:55:133
25232992314,7cyclictest24790-21ntp_states10:40:223
2522699234,10cyclictest22-21ksoftirqd/109:50:451
25226992319,3cyclictest211rcuc/107:31:201
25225992317,4cyclictest12-21ksoftirqd/012:00:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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