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2026-06-29 - 00:08

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 Sun Jun 28, 2026 12:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2375421890,8sleep10-21swapper/107:05:131
25240217196,25sleep20-21swapper/207:09:042
57721670,1sleep30-21swapper/310:36:473
250522139102,26sleep30-21swapper/307:06:363
250692138101,26sleep00-21swapper/007:06:500
313722800,3sleep00-21swapper/007:20:240
184032660,2chrt0-21swapper/111:14:411
285672650,2sleep10-21swapper/109:45:201
72842620,1sleep30-21swapper/310:18:053
48052610,1sleep10-21swapper/109:27:421
87752590,2sleep228-21ksoftirqd/207:45:112
324112540,3sleep2271rcuc/211:49:132
146082540,1sleep10-21swapper/111:35:201
221512520,1sleep0131rcuc/009:15:560
304782510,1sleep20-21swapper/208:35:182
316442490,1sleep00-21swapper/009:23:480
250792490,1sleep00-21swapper/008:20:240
246212480,1sleep124622-21sh09:42:271
24492470,2sleep20-21swapper/207:30:132
128912470,1sleep112893-21cat09:10:001
158362460,2sleep10-21swapper/110:24:561
40002440,1sleep20-21swapper/211:04:072
302892440,1sleep10-21swapper/112:11:071
117162440,3sleep10-21swapper/111:33:351
224612430,3sleep30-21swapper/310:29:523
34352410,2chrt0-21swapper/311:03:313
284342410,1sleep30-21swapper/310:57:503
159402370,3sleep00-21swapper/010:48:440
159402370,3sleep00-21swapper/010:48:430
145962370,1sleep10-21swapper/109:10:241
307652350,2sleep20-21swapper/212:11:372
292002330,2sleep10-21swapper/108:30:241
206512330,2sleep10-21swapper/110:28:021
86262300,3chrt0-21swapper/009:00:000
206762300,11sleep012-21ksoftirqd/010:51:450
25588992912,5cyclictest22-21ksoftirqd/112:00:141
25588992912,4cyclictest22-21ksoftirqd/110:57:051
84462280,1sleep38447-21wc12:19:593
25588992821,5cyclictest22-21ksoftirqd/108:05:011
25587992824,2cyclictest0-21swapper/007:10:330
46942270,8sleep012-21ksoftirqd/009:51:360
2558899279,5cyclictest22-21ksoftirqd/111:49:091
2558899275,7cyclictest22-21ksoftirqd/109:36:081
2558899271,25cyclictest0-21swapper/107:10:271
25588992710,5cyclictest22-21ksoftirqd/109:51:451
46092260,2sleep00-21swapper/008:50:120
25590992623,1cyclictest0-21swapper/307:10:333
25589992614,10cyclictest5440-21ssh09:28:202
25589992613,8cyclictest53050irq/142-enp3s0-11:05:052
2558899269,4cyclictest22-21ksoftirqd/111:15:491
2558899268,4cyclictest22-21ksoftirqd/111:28:291
2558899266,6cyclictest22-21ksoftirqd/110:45:151
2558899266,6cyclictest22-21ksoftirqd/110:45:151
2558899263,11cyclictest22-21ksoftirqd/110:50:141
25588992610,5cyclictest22-21ksoftirqd/109:55:401
2558999256,8cyclictest324902cstates07:25:142
25589992522,2cyclictest0-21swapper/207:10:342
2558899259,4cyclictest22-21ksoftirqd/112:27:241
2558899258,9cyclictest22-21ksoftirqd/110:07:561
2558899258,14cyclictest22-21ksoftirqd/109:20:191
25588992518,5cyclictest22-21ksoftirqd/110:40:001
25588992512,4cyclictest22-21ksoftirqd/112:24:111
25588992512,4cyclictest22-21ksoftirqd/111:51:121
2558899251,11cyclictest19888-21apt-get09:15:111
25588992510,5cyclictest22-21ksoftirqd/112:19:071
2558799256,10cyclictest141rcu_preempt10:40:180
25589992415,7cyclictest15241-21ssh09:35:202
2558899249,4cyclictest22-21ksoftirqd/111:23:311
2558899249,4cyclictest22-21ksoftirqd/110:00:171
2558899249,4cyclictest22-21ksoftirqd/110:00:171
2558899248,9cyclictest22-21ksoftirqd/110:13:471
2558899248,4cyclictest22-21ksoftirqd/110:44:591
2558899244,11cyclictest22-21ksoftirqd/112:31:251
2558899241,11cyclictest80772expr11:55:111
25588992410,4cyclictest22-21ksoftirqd/110:34:421
2558799241,8cyclictest25165-21memory10:55:150
25587992416,4cyclictest12789-21diskmemload11:30:280
117402240,2sleep00-21swapper/009:32:590
43982230,1sleep20-21swapper/208:50:112
257432230,2sleep20-21swapper/209:19:362
25590992314,7cyclictest30810-21users12:35:263
25590992314,7cyclictest27116-1kworker/u9:210:09:493
2559099231,18cyclictest14175-21apt-get09:35:123
25589992313,7cyclictest23922-21cat10:30:172
2558899237,4cyclictest22-21ksoftirqd/111:01:361
25588992317,4cyclictest22-21ksoftirqd/108:40:001
25588992317,4cyclictest22-21ksoftirqd/107:39:591
25588992311,4cyclictest22-21ksoftirqd/108:45:241
25588992310,5cyclictest22-21ksoftirqd/112:06:241
25587992319,2cyclictest22582sleep011:50:200
2558799231,7cyclictest16944-21ls12:25:240
2558799230,9cyclictest0-21swapper/012:00:020
84072220,2sleep38405-21ls09:30:173
2559099225,4cyclictest12789-21diskmemload11:38:533
2559099221,12cyclictest25422-21cron11:20:003
2558999225,4cyclictest12789-21diskmemload09:13:522
25589992214,5cyclictest11270-21diskstats07:50:132
25589992213,7cyclictest11468-21fw_packets10:45:152
25589992213,7cyclictest11468-21fw_packets10:45:152
2558999220,5cyclictest0-21swapper/210:25:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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