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2026-04-14 - 23:50

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #5

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 rackeslot5s.osadl.org (updated Tue Apr 14, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24352992624,1cyclictest774-21runrttasks09:09:360
24358992523,1cyclictest0-21swapper/210:38:532
24358992523,1cyclictest0-21swapper/210:38:532
2435899250,2cyclictest25921-21ssh11:54:422
2435899250,24cyclictest85032sleep211:38:302
24355992524,1cyclictest0-21swapper/110:28:421
2435599250,24cyclictest18883-21diskmemload11:58:561
2435599250,24cyclictest0-21swapper/112:19:361
2435599250,24cyclictest0-21swapper/109:46:341
2435599250,24cyclictest0-21swapper/109:20:401
2435599250,1cyclictest0-21swapper/110:47:011
2435299250,24cyclictest12136-21strings11:09:420
2436599240,23cyclictest23296-21ssh10:18:133
24358992423,0cyclictest0-21swapper/209:14:372
2435899240,3cyclictest18883-21diskmemload10:25:042
2435899240,23cyclictest18883-21diskmemload10:19:072
2435899240,23cyclictest18883-21diskmemload09:15:192
2435899240,1cyclictest0-21swapper/211:18:222
2435599240,23cyclictest607-21in:imuxsock09:10:011
2435599240,23cyclictest32707-21ssh10:59:181
2435599240,0cyclictest0-21swapper/111:49:441
2435599240,0cyclictest0-21swapper/110:43:481
24352992423,1cyclictest0-21swapper/012:09:510
24352992422,1cyclictest0-21swapper/010:52:430
2435299242,1cyclictest4419-21kworker/0:211:46:060
2435299240,24cyclictest0-21swapper/010:09:280
2435299240,24cyclictest0-21swapper/009:57:230
2435299240,24cyclictest0-21swapper/009:25:370
2435299240,23cyclictest18883-21diskmemload11:37:280
2435299240,23cyclictest18883-21diskmemload11:20:090
2435299240,23cyclictest18883-21diskmemload10:24:070
2435299240,1cyclictest0-21swapper/010:55:120
2435299240,1cyclictest0-21swapper/010:43:190
24365992323,0cyclictest18883-21diskmemload12:20:313
24365992323,0cyclictest18883-21diskmemload12:19:533
24365992323,0cyclictest18883-21diskmemload11:24:513
24365992323,0cyclictest0-21swapper/312:28:193
24365992323,0cyclictest0-21swapper/311:44:063
24365992323,0cyclictest0-21swapper/309:46:383
24365992323,0cyclictest0-21swapper/309:35:133
24365992322,1cyclictest2777-21ssh11:32:253
24365992321,1cyclictest0-21swapper/311:26:583
2436599230,2cyclictest17131-21sh11:45:563
2436599230,23cyclictest18883-21diskmemload09:12:423
2436599230,23cyclictest0-21swapper/312:39:323
2436599230,23cyclictest0-21swapper/310:01:053
2436599230,22cyclictest9279-21sh09:32:293
2436599230,22cyclictest30202-21ssh10:55:143
2436599230,22cyclictest27325-21diskmemload11:55:553
2436599230,22cyclictest23307-21sh11:20:003
2436599230,22cyclictest18883-21diskmemload12:31:543
2436599230,22cyclictest18883-21diskmemload10:26:063
2436599230,22cyclictest16773-21ssh10:11:003
2436599230,22cyclictest10379-21ssh12:11:043
2436599230,0cyclictest18883-21diskmemload12:05:073
2436599230,0cyclictest18883-21diskmemload11:35:313
2436599230,0cyclictest18883-21diskmemload10:09:413
2436599230,0cyclictest18883-21diskmemload09:51:153
2436599230,0cyclictest18883-21diskmemload09:51:153
24358992323,0cyclictest0-21swapper/210:55:492
24358992322,1cyclictest18883-21diskmemload09:35:392
24358992321,2cyclictest0-21swapper/212:02:212
24358992320,2cyclictest28451-21ssh11:57:482
24358992320,2cyclictest27796-21apt-get10:54:362
2435899230,23cyclictest0-21swapper/212:12:122
2435899230,23cyclictest0-21swapper/211:21:562
2435899230,23cyclictest0-21swapper/210:24:102
2435899230,23cyclictest0-21swapper/209:52:572
2435899230,23cyclictest0-21swapper/209:52:572
2435899230,22cyclictest8651-21rm11:05:432
2435899230,22cyclictest5205-21ssh10:31:372
2435899230,22cyclictest17391-21diskmemload11:46:212
2435899230,0cyclictest0-21swapper/211:13:302
2435899230,0cyclictest0-21swapper/209:41:192
24355992323,0cyclictest18883-21diskmemload09:54:191
24355992323,0cyclictest18883-21diskmemload09:54:191
24355992323,0cyclictest0-21swapper/112:37:081
24355992323,0cyclictest0-21swapper/112:31:341
24355992323,0cyclictest0-21swapper/112:09:391
24355992323,0cyclictest0-21swapper/110:12:121
24355992321,1cyclictest7035-21apt-get10:34:371
24355992321,1cyclictest0-21swapper/111:06:271
2435599230,23cyclictest0-21swapper/111:36:161
2435599230,22cyclictest26341-21apt-get11:24:351
2435599230,22cyclictest19033-21sh09:41:461
2435599230,22cyclictest0-21swapper/111:30:111
2435599230,22cyclictest0-21swapper/110:15:221
2435599230,22cyclictest0-21swapper/109:36:281
2435599230,0cyclictest18883-21diskmemload10:37:211
2435599230,0cyclictest18883-21diskmemload10:37:211
2435599230,0cyclictest0-21swapper/112:14:521
2435599230,0cyclictest0-21swapper/109:30:161
2435599230,0cyclictest0-21swapper/109:10:081
24352992323,0cyclictest18883-21diskmemload09:39:590
24352992323,0cyclictest0-21swapper/009:43:410
24352992322,1cyclictest4419-21kworker/0:212:19:530
24352992322,1cyclictest18883-21diskmemload10:29:040
24352992322,1cyclictest0-21swapper/012:28:190
24352992322,0cyclictest0-21swapper/009:46:380
24352992321,1cyclictest30975-21apt-get09:54:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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