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2026-08-17 - 08:49

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, 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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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 rack3slot6s.osadl.org (updated Mon Aug 17, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11842211694,16sleep10-21swapper/119:07:451
11777211695,16sleep30-21swapper/319:06:543
11774211086,18sleep00-21swapper/019:06:520
11816210796,6sleep20-21swapper/219:07:262
971121020,1sleep09709-21ssh21:23:530
199652910,1sleep10-21swapper/123:46:531
12842830,1sleep0101ktimersoftd/022:55:170
81252720,1sleep20-21swapper/220:20:132
167282700,0sleep20-21swapper/220:40:172
51742220,1sleep10-21swapper/122:25:191
12046992219,2cyclictest1574-21kworker/u8:222:29:053
1204399222,18cyclictest101ktimersoftd/023:15:130
12046992118,2cyclictest442-21kworker/u8:121:17:053
12046992118,2cyclictest442-21kworker/u8:121:17:053
12046992118,2cyclictest2846-21kworker/u8:021:52:063
12046992118,2cyclictest20256-21kworker/u8:221:22:043
12043992112,7cyclictest0-21swapper/022:04:020
1204399210,19cyclictest12484-21ssh00:12:340
12046992017,2cyclictest4082-21kworker/u8:123:32:053
12046992017,2cyclictest28445-21kworker/u8:022:20:013
12046992017,2cyclictest28085-21kworker/u8:121:43:043
12046992017,2cyclictest20256-21kworker/u8:222:13:043
1204699200,17cyclictest0-21swapper/322:49:043
1204399201,4cyclictest0-21swapper/023:30:000
1204399200,2cyclictest0-21swapper/000:30:180
1204399200,11cyclictest890-21ssh00:00:350
1204399200,11cyclictest0-21swapper/022:14:100
12046991916,2cyclictest8900-21kworker/u8:122:37:043
12046991916,2cyclictest29711-21kworker/u8:023:50:053
12046991916,2cyclictest24332-21kworker/u8:223:29:053
12046991916,2cyclictest22649-21kworker/u8:021:39:053
12046991916,2cyclictest18338-21kworker/u8:123:13:043
12046991916,2cyclictest1574-21kworker/u8:222:32:043
12046991916,2cyclictest15562-21kworker/u8:022:56:043
12046991916,2cyclictest15562-21kworker/u8:022:50:063
12046991916,2cyclictest14071-21kworker/u8:022:07:043
12046991916,2cyclictest14071-21kworker/u8:022:02:053
1204499190,2cyclictest0-21swapper/121:49:041
1204499190,2cyclictest0-21swapper/100:15:121
1204499190,2cyclictest0-21swapper/100:15:111
1204399190,2cyclictest0-21swapper/023:14:030
1204399190,2cyclictest0-21swapper/021:47:250
1204399190,17cyclictest27992-21diskmemload22:06:130
1204399190,11cyclictest27992-21diskmemload00:27:380
1204399190,11cyclictest20065-21ssh23:47:030
12046991815,2cyclictest6238-21kworker/u8:200:12:053
12046991815,2cyclictest29711-21kworker/u8:000:23:043
12046991815,2cyclictest29711-21kworker/u8:000:09:073
12046991815,2cyclictest28085-21kworker/u8:121:47:043
12046991815,2cyclictest25181-21kworker/u8:223:58:023
12046991815,2cyclictest23463-21kworker/u8:019:34:013
12046991815,2cyclictest14768-21kworker/u8:121:32:043
12046991815,2cyclictest14480-21kworker/u8:100:39:053
12046991815,2cyclictest14480-21kworker/u8:100:17:053
12046991815,2cyclictest14480-21kworker/u8:100:17:043
1204399188,8cyclictest0-21swapper/022:30:020
1204399187,2cyclictest0-21swapper/022:54:350
1204399186,3cyclictest3960-21ssh21:50:230
12043991810,6cyclictest10820-21ssh21:25:150
1204399180,2cyclictest0-21swapper/023:05:200
1204399180,17cyclictest0-21swapper/023:43:370
1204399180,17cyclictest0-21swapper/022:28:470
1204399180,17cyclictest0-21swapper/021:37:320
1204399180,11cyclictest11874-21ssh21:59:130
12046991714,2cyclictest4661-21kworker/u8:120:14:043
12046991714,2cyclictest23463-21kworker/u8:019:10:013
12046991714,2cyclictest20375-21kworker/u8:219:45:043
12046991714,2cyclictest18338-21kworker/u8:123:21:043
12046991714,2cyclictest1783-21kworker/u8:223:07:053
12046991714,2cyclictest1566-21kworker/u8:020:04:053
12046991714,2cyclictest14299-21kworker/u8:119:24:053
12046991714,2cyclictest11539-21kworker/u8:020:44:053
12046991713,3cyclictest24379-21kworker/u8:119:54:053
1204399179,7cyclictest0-21swapper/023:23:500
1204399179,7cyclictest0-21swapper/021:42:580
1204399179,7cyclictest0-21swapper/000:24:300
1204399176,2cyclictest0-21swapper/000:15:480
1204399176,2cyclictest0-21swapper/000:15:470
1204399175,3cyclictest5690-1kworker/u9:023:00:210
1204399171,4cyclictest0-21swapper/019:50:000
1204399170,2cyclictest0-21swapper/020:20:130
1204399170,16cyclictest0-21swapper/022:17:190
1204399170,15cyclictest0-21swapper/023:38:470
12046991613,2cyclictest7156-21kworker/u8:323:02:013
12046991613,2cyclictest31737-21kworker/u8:220:07:053
12046991613,2cyclictest28445-21kworker/u8:022:16:053
12046991613,2cyclictest20375-21kworker/u8:219:44:053
12046991613,2cyclictest20256-21kworker/u8:220:57:053
12046991613,2cyclictest14480-21kworker/u8:100:25:053
12046991613,2cyclictest14299-21kworker/u8:119:25:053
12046991613,2cyclictest11539-21kworker/u8:021:12:043
12046991613,2cyclictest11539-21kworker/u8:020:33:053
12046991613,2cyclictest11084-21kworker/u8:223:43:053
1204699160,2cyclictest0-21swapper/323:49:043
1204699160,2cyclictest0-21swapper/323:38:043
1204699160,2cyclictest0-21swapper/300:33:043
1204699160,14cyclictest0-21swapper/321:30:013
12045991611,3cyclictest0-21swapper/223:40:002
1204599161,13cyclictest0-21swapper/221:36:372
12044991613,2cyclictest15562-21kworker/u8:022:49:041
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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