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2025-11-21 - 05:16

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, 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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  Intel
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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack1slot6s.osadl.org (updated Fri Nov 21, 2025 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12198999337,49cyclictest18871-21grep19:10:441
12198998932,11cyclictest31148-21gltestperf20:45:361
1219899893,37cyclictest3992-21needreboot20:55:341
12198998834,8cyclictest16182-21cpuspeed_turbos22:30:201
12198998829,9cyclictest27587-21hwlatdetect21:45:291
12198998633,10cyclictest25125-21tail21:40:281
12198998534,10cyclictest5089-21taskset00:20:261
12198998518,11cyclictest28776-21basename22:55:281
12198998326,12cyclictest0-21swapper/123:25:041
12198998126,12cyclictest0-21swapper/122:10:071
12198997421,11cyclictest0-21swapper/100:01:361
243799660,5rtkit-daemon2436-21rtkit-daemon23:54:522
281552607,7sleep00-21swapper/021:45:410
243799590,4rtkit-daemon2436-21rtkit-daemon21:54:493
1219899593,24cyclictest0-21swapper/120:30:421
1219899593,24cyclictest0-21swapper/120:30:421
1219699594,48cyclictest0-21swapper/021:33:000
12200995829,9cyclictest17213-21telnet21:25:213
12199995828,25cyclictest0-21swapper/220:15:292
12199995823,9cyclictest7255-21munin-run23:20:032
1219699584,35cyclictest0-21swapper/019:20:350
75782572,10sleep20-21swapper/221:05:212
1220099573,46cyclictest0-21swapper/319:10:133
1219999574,36cyclictest0-21swapper/223:45:332
12198995725,10cyclictest10538-21unixbench_singl20:00:481
12196995721,30cyclictest6096-21latency_hist22:10:070
59192564,10sleep00-21swapper/019:52:050
243799560,7rtkit-daemon2436-21rtkit-daemon20:13:463
243799560,5rtkit-daemon2436-21rtkit-daemon23:25:232
243799560,5rtkit-daemon2436-21rtkit-daemon23:25:232
243799560,5rtkit-daemon2436-21rtkit-daemon22:05:413
191172563,11sleep00-21swapper/021:28:160
1219999565,32cyclictest0-21swapper/200:15:022
1219999565,32cyclictest0-21swapper/200:15:022
121282563,45sleep312139-21cut22:20:293
243799550,6rtkit-daemon2436-21rtkit-daemon20:54:223
216472554,14sleep20-21swapper/221:35:072
140842554,44sleep00-21swapper/023:30:500
12199995526,24cyclictest0-21swapper/200:15:232
12198995530,10cyclictest0-21swapper/121:00:111
12198995528,9cyclictest18373-21telnet20:20:271
1219699554,27cyclictest0-21swapper/023:15:200
285942543,9sleep00-21swapper/019:31:290
264042543,9sleep00-21swapper/019:29:030
243799540,6rtkit-daemon2436-21rtkit-daemon19:48:173
243799540,6rtkit-daemon2436-21rtkit-daemon19:20:333
243799540,5rtkit-daemon2436-21rtkit-daemon22:50:173
243799540,5rtkit-daemon2436-21rtkit-daemon21:40:353
195742542,44sleep10-21swapper/123:45:171
1219999545,13cyclictest0-21swapper/220:05:312
1219999544,12cyclictest0-21swapper/222:35:212
12199995425,24cyclictest0-21swapper/222:40:332
12199995425,24cyclictest0-21swapper/222:40:332
56932533,9sleep00-21swapper/000:20:380
288632532,9sleep30-21swapper/322:55:313
243799530,6rtkit-daemon2436-21rtkit-daemon23:42:002
243799530,5rtkit-daemon2436-21rtkit-daemon23:20:312
243799530,5rtkit-daemon2436-21rtkit-daemon21:45:423
243799530,5rtkit-daemon2436-21rtkit-daemon21:08:593
243799530,5rtkit-daemon2436-21rtkit-daemon20:40:303
243799530,5rtkit-daemon2436-21rtkit-daemon20:00:393
23952533,43sleep00-21swapper/023:09:300
178132533,10sleep30-21swapper/322:32:183
173852533,44sleep00-21swapper/020:15:420
144402534,11sleep00-21swapper/021:19:290
12200995321,27cyclictest0-21swapper/320:49:413
12199995337,9cyclictest6734-21tr19:55:252
1219899535,38cyclictest0-21swapper/123:30:361
1219899534,42cyclictest0-21swapper/122:50:041
12198995332,9cyclictest30224-21munin-node23:00:371
1219699535,25cyclictest27657-21sadc20:40:100
1219699534,43cyclictest0-21swapper/022:00:450
1219699534,42cyclictest0-21swapper/022:15:260
1219699533,37cyclictest0-21swapper/020:30:300
1219699533,37cyclictest0-21swapper/020:30:300
12196995324,11cyclictest0-21swapper/000:27:430
12196995317,21cyclictest27964-21tail22:55:200
70422522,10sleep30-21swapper/323:17:273
54582522,42sleep10-21swapper/119:50:451
243799520,5rtkit-daemon2436-21rtkit-daemon22:02:343
243799520,5rtkit-daemon2436-21rtkit-daemon19:15:403
189572524,42sleep10-21swapper/121:26:111
12200995235,11cyclictest24872-21grep20:30:473
12200995235,11cyclictest24872-21grep20:30:473
1219999524,29cyclictest0-21swapper/222:14:592
1219999524,13cyclictest0-21swapper/221:50:372
12198995230,8cyclictest32144-21sort21:55:241
12198995230,8cyclictest32144-21sort21:55:241
82282513,10sleep00-21swapper/019:56:040
322752512,10sleep20-21swapper/223:03:522
30192513,41sleep00-21swapper/020:55:240
26232513,42sleep12697-21missed_timers22:00:371
243799510,5rtkit-daemon2436-21rtkit-daemon22:45:173
243799510,5rtkit-daemon2436-21rtkit-daemon20:59:513
237332512,9sleep30-21swapper/321:36:173
14742512,9sleep20-21swapper/219:45:222
1219999516,27cyclictest0-21swapper/221:55:172
1219999516,27cyclictest0-21swapper/221:55:172
1219999515,28cyclictest0-21swapper/221:45:422
1219999515,22cyclictest26-21rcuc/220:20:482
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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