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2026-03-24 - 09:35

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 Tue Mar 24, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9403211494,15sleep00-21swapper/019:05:230
10126211396,12sleep30-21swapper/319:09:193
10052211396,12sleep20-21swapper/219:08:222
10083210897,6sleep10-21swapper/119:08:451
22422740,1sleep10-21swapper/122:25:151
271122710,0sleep30-21swapper/323:59:163
253402710,0sleep10-21swapper/123:23:241
316842680,0sleep20-21swapper/222:21:352
43342660,0sleep10-21swapper/123:01:021
134682660,0sleep00-21swapper/019:15:400
233042290,0sleep10-21swapper/122:47:071
74632270,1sleep30-21swapper/323:38:323
165672230,1sleep016570-21aten2.4_r3power20:45:140
1021099190,15cyclictest0-21swapper/222:31:052
183112180,1sleep10-21swapper/123:50:081
1021199183,2cyclictest0-21swapper/321:37:043
1021199181,2cyclictest0-21swapper/320:37:053
1021099181,15cyclictest0-21swapper/221:20:122
1020899182,5cyclictest0-21swapper/000:38:580
1021199173,2cyclictest0-21swapper/321:00:053
1021199173,12cyclictest0-21swapper/322:05:043
1021199172,2cyclictest0-21swapper/321:28:053
10211991714,2cyclictest20752-21kworker/u8:022:52:043
1021199171,2cyclictest0-21swapper/320:42:043
1021199171,2cyclictest0-21swapper/319:15:043
1021199170,3cyclictest0-21swapper/322:58:013
1021199170,3cyclictest0-21swapper/322:28:043
1021199170,2cyclictest0-21swapper/320:22:043
1021199170,2cyclictest0-21swapper/319:52:043
1021199170,2cyclictest0-21swapper/319:48:023
1021099171,14cyclictest4008-21apt-get20:15:062
10209991714,2cyclictest14389-21kworker/u8:122:15:041
10209991714,2cyclictest12020-21kworker/u8:120:37:041
1021199162,2cyclictest0-21swapper/322:04:043
1021199162,2cyclictest0-21swapper/321:15:043
1021199161,3cyclictest27192-21fschecks_time23:25:133
1021199161,2cyclictest0-21swapper/320:57:043
1021199161,2cyclictest0-21swapper/319:29:043
1021199161,13cyclictest11096-21irqstats19:10:133
1021199160,14cyclictest0-21swapper/320:54:043
10210991613,2cyclictest32239-21kworker/u8:123:02:042
10210991613,2cyclictest21047-21kworker/u8:123:48:012
10210991613,2cyclictest20752-21kworker/u8:022:54:042
10210991613,2cyclictest17433-21kworker/u8:023:52:062
10210991613,2cyclictest14389-21kworker/u8:122:18:062
10209991613,2cyclictest9568-21kworker/u8:220:42:041
10209991613,2cyclictest30721-21kworker/u8:020:22:041
10209991613,2cyclictest27872-21kworker/u8:121:30:041
10209991613,2cyclictest27872-21kworker/u8:121:28:041
10209991613,2cyclictest2676-21kworker/u8:021:23:041
10209991613,2cyclictest25887-21kworker/u8:019:48:021
10209991613,2cyclictest24542-21kworker/u8:221:15:051
10209991613,2cyclictest22542-21kworker/u8:219:52:041
10209991613,2cyclictest21384-21kworker/u8:219:15:041
10209991613,2cyclictest20752-21kworker/u8:022:58:021
10209991613,2cyclictest20534-21kworker/u8:021:37:041
10209991613,2cyclictest14107-21kworker/u8:021:00:041
10208991613,2cyclictest0-21swapper/020:10:120
1021199152,2cyclictest0-21swapper/322:30:043
1021199152,2cyclictest0-21swapper/319:32:023
1021199151,3cyclictest19194-21ssh22:43:113
1021199151,2cyclictest0-21swapper/322:22:043
1021199151,13cyclictest0-21swapper/320:15:043
10211991511,2cyclictest0-21swapper/300:20:183
1021199150,2cyclictest0-21swapper/321:14:043
1021199150,2cyclictest0-21swapper/320:34:043
1021199150,2cyclictest0-21swapper/320:28:013
1021199150,2cyclictest0-21swapper/320:12:053
1021199150,13cyclictest16968-21ssh23:15:013
1021199150,13cyclictest0-21swapper/323:46:013
1021099151,2cyclictest0-21swapper/223:26:042
10210991512,2cyclictest0-21swapper/200:00:162
1021099150,3cyclictest0-21swapper/219:30:002
1021099150,13cyclictest0-21swapper/223:08:302
10209991512,2cyclictest9461-21kworker/u8:022:04:041
10209991512,2cyclictest7590-21kworker/u8:223:13:041
10209991512,2cyclictest29121-21cpu00:35:151
10209991512,2cyclictest25887-21kworker/u8:019:32:011
10209991512,2cyclictest21384-21kworker/u8:219:29:041
10209991512,2cyclictest0-21swapper/121:51:021
10209991510,4cyclictest14389-21kworker/u8:122:09:051
1020999150,2cyclictest17210-21aten2.4_r3power23:15:121
1020899152,7cyclictest0-21swapper/022:50:000
1020899151,3cyclictest0-21swapper/021:51:430
1020899151,12cyclictest2463-21rm21:18:270
10208991510,3cyclictest27971-21aten2.4_r3power00:00:100
10208991510,3cyclictest10571-21chrt22:34:490
10208991510,3cyclictest0-21swapper/021:14:590
1020899150,13cyclictest0-21swapper/023:26:070
1020899150,13cyclictest0-21swapper/021:55:180
1020899150,13cyclictest0-21swapper/020:50:180
1021199142,2cyclictest0-21swapper/319:35:043
1021199140,5cyclictest0-21swapper/300:37:043
1021199140,2cyclictest0-21swapper/323:03:043
1021199140,2cyclictest0-21swapper/322:45:153
1021199140,2cyclictest0-21swapper/322:16:123
1021199140,2cyclictest0-21swapper/321:22:043
1021199140,12cyclictest0-21swapper/322:10:153
1021199140,12cyclictest0-21swapper/321:30:113
10210991411,2cyclictest27872-21kworker/u8:121:38:052
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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