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2026-09-19 - 09:31

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 Sat Sep 19, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2297599270,0cyclictest16619-21diskmemload22:10:053
2297599270,0cyclictest0-21swapper/300:32:403
2297599260,25cyclictest0-21swapper/323:45:433
22973992624,1cyclictest18788-21chrt21:12:222
22975992523,1cyclictest0-21swapper/321:41:483
22975992521,3cyclictest16619-21diskmemload23:44:173
22975992520,4cyclictest16619-21diskmemload23:57:513
22975992520,4cyclictest0-21swapper/322:53:193
22975992518,6cyclictest6957-21cron20:50:003
2297599250,24cyclictest25883-21sh22:16:323
2297599250,24cyclictest16619-21diskmemload22:27:063
2297599250,21cyclictest16619-21diskmemload23:04:123
2297599250,21cyclictest0-21swapper/300:02:503
2297599250,20cyclictest0-21swapper/321:18:123
2297599250,1cyclictest735-21ssh00:21:123
2297599250,1cyclictest0-21swapper/321:10:383
2297599250,0cyclictest16619-21diskmemload22:24:123
2297599250,0cyclictest16619-21diskmemload22:00:563
2297599250,0cyclictest0-21swapper/300:07:393
2297399250,24cyclictest0-21swapper/223:08:222
2297399250,1cyclictest0-21swapper/220:40:002
2296999250,24cyclictest16619-21diskmemload22:18:471
2296999250,24cyclictest16619-21diskmemload00:25:451
22975992420,4cyclictest0-21swapper/321:37:483
22975992418,5cyclictest2147-21phc2sys23:22:443
2297599240,24cyclictest0-21swapper/323:18:143
2297599240,23cyclictest0-21swapper/321:20:463
2297599240,21cyclictest0-21swapper/323:38:173
2297599240,20cyclictest16619-21diskmemload00:36:323
2297599240,20cyclictest16619-21diskmemload00:12:173
2297599240,0cyclictest0-21swapper/322:39:593
2297599240,0cyclictest0-21swapper/322:30:263
22973992423,0cyclictest0-21swapper/221:21:242
2297399240,23cyclictest6491-21ntp_states22:27:432
2297399240,23cyclictest16619-21diskmemload23:00:202
2297399240,23cyclictest0-21swapper/222:35:302
22969992424,0cyclictest0-21swapper/122:41:391
22969992423,1cyclictest14156-21ssh21:37:151
22969992422,1cyclictest15889-21idleruntime-cro00:05:011
2296999240,24cyclictest0-21swapper/122:12:151
2296999240,1cyclictest19853-21ssh21:41:501
2296999240,1cyclictest16619-21diskmemload22:47:491
2296999240,0cyclictest0-21swapper/123:01:221
22968992424,0cyclictest0-21swapper/022:16:360
22968992421,2cyclictest17794-21awk20:05:000
2296899240,24cyclictest0-21swapper/023:29:090
2296899240,24cyclictest0-21swapper/022:02:590
2296899240,24cyclictest0-21swapper/021:35:460
22975992323,0cyclictest16619-21diskmemload21:56:283
22975992323,0cyclictest0-21swapper/300:16:053
22975992322,1cyclictest7443-21apt-get20:52:393
22975992320,3cyclictest0-21swapper/323:05:423
22975992320,3cyclictest0-21swapper/321:54:513
22975992319,4cyclictest16619-21diskmemload00:25:403
2297599230,22cyclictest14940-21sh22:06:313
2297599230,22cyclictest0-21swapper/319:57:363
2297599230,1cyclictest0-21swapper/321:27:373
2297599230,0cyclictest0-21swapper/323:52:423
2297599230,0cyclictest0-21swapper/323:14:283
2297599230,0cyclictest0-21swapper/322:55:373
22973992323,0cyclictest16619-21diskmemload00:37:102
22973992323,0cyclictest0-21swapper/223:15:482
22973992323,0cyclictest0-21swapper/200:15:402
22973992321,1cyclictest5306-21ssh21:27:492
22973992318,3cyclictest22228-21apt-get23:12:392
2297399231,1cyclictest607-21in:imuxsock20:30:002
2297399230,2cyclictest11412-21ssh23:31:542
2297399230,23cyclictest16619-21diskmemload22:56:282
2297399230,23cyclictest16619-21diskmemload22:40:462
2297399230,22cyclictest18749-21ssh21:40:172
2297399230,22cyclictest18241-21apt-get20:07:382
2297399230,22cyclictest16619-21diskmemload23:36:082
2297399230,0cyclictest0-21swapper/221:30:312
2297399230,0cyclictest0-21swapper/221:16:012
22969992323,0cyclictest16619-21diskmemload00:16:191
22969992323,0cyclictest0-21swapper/123:19:181
22969992323,0cyclictest0-21swapper/122:36:541
22969992323,0cyclictest0-21swapper/122:05:351
22969992323,0cyclictest0-21swapper/121:26:211
22969992323,0cyclictest0-21swapper/100:11:201
22969992321,2cyclictest26800-21ssh23:45:271
22969992321,1cyclictest26966-21users21:17:471
2296999230,2cyclictest9794-21ssh22:01:581
2296999230,23cyclictest0-21swapper/123:40:531
2296999230,23cyclictest0-21swapper/122:58:451
2296999230,23cyclictest0-21swapper/100:30:591
2296999230,22cyclictest9478-21sh23:58:551
2296999230,22cyclictest313-21systemd-journal19:25:011
2296999230,22cyclictest16619-21diskmemload21:55:311
2296999230,22cyclictest16619-21diskmemload00:21:121
2296999230,22cyclictest0-21swapper/122:31:481
2296999230,21cyclictest0-21swapper/123:32:551
2296999230,1cyclictest0-21swapper/123:36:501
2296999230,0cyclictest16619-21diskmemload23:05:441
2296999230,0cyclictest0-21swapper/123:23:551
22968992323,0cyclictest16619-21diskmemload00:30:470
22968992323,0cyclictest0-21swapper/023:16:470
22968992323,0cyclictest0-21swapper/022:29:030
22968992323,0cyclictest0-21swapper/022:20:230
22968992323,0cyclictest0-21swapper/021:34:410
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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