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2026-05-18 - 11:44

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 May 18, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10727211997,16sleep30-21swapper/319:08:063
106642116105,6sleep20-21swapper/219:07:172
10601211295,12sleep10-21swapper/119:06:291
9085210479,6sleep00-21swapper/019:05:070
100192710,0sleep30-21swapper/320:25:183
18012680,0sleep20-21swapper/222:28:402
98862670,0sleep30-21swapper/300:25:143
10903993617,16cyclictest0-21swapper/222:10:112
33492270,0sleep00-21swapper/023:41:450
247592270,0sleep10-21swapper/122:17:531
46742250,2sleep3381ktimersoftd/300:20:013
10902992510,13cyclictest0-21swapper/120:50:121
90282240,0sleep20-21swapper/222:35:572
20012230,1sleep10-21swapper/122:29:031
170112230,1sleep217004-21ssh22:45:162
50832220,1sleep0101ktimersoftd/021:55:480
1090499210,2cyclictest0-21swapper/320:50:123
1090299210,19cyclictest0-21swapper/121:00:111
210062200,0sleep20-21swapper/223:25:152
1090499200,18cyclictest0-21swapper/321:35:123
1090199200,2cyclictest0-21swapper/019:30:110
95722180,0sleep10-21swapper/123:49:281
10903991815,2cyclictest683-21kworker/u8:221:34:022
10903991814,2cyclictest0-21swapper/222:15:132
1090399181,2cyclictest0-21swapper/223:35:122
1090499171,14cyclictest0-21swapper/300:05:153
1090299171,3cyclictest5507-21ssh00:20:151
1090499161,3cyclictest27065-21diskmemload22:55:153
10904991611,3cyclictest25106-21wc21:05:013
1090499160,14cyclictest20571-21apt-get22:50:053
10903991611,3cyclictest0-21swapper/221:20:152
1090399160,13cyclictest0-21swapper/200:33:012
10902991611,3cyclictest21065-21unixbench_multi00:01:051
10902991611,3cyclictest21065-21unixbench_multi00:01:041
1090199161,3cyclictest0-21swapper/023:15:130
1090199161,3cyclictest0-21swapper/022:10:150
1090199160,2cyclictest0-21swapper/023:35:120
1090499151,12cyclictest0-21swapper/321:24:223
10904991510,3cyclictest12700-21hddtemp_smartct22:40:153
1090399152,2cyclictest0-21swapper/223:45:052
10903991512,2cyclictest7448-21kworker/u8:122:40:052
10903991512,2cyclictest16697-21kworker/u8:200:01:052
10903991512,2cyclictest16697-21kworker/u8:200:01:042
10903991510,3cyclictest4976-21ssh00:20:122
1090299152,7cyclictest0-21swapper/120:40:001
10902991511,3cyclictest0-21swapper/119:45:191
1090299151,12cyclictest0-21swapper/120:40:171
1090199151,2cyclictest0-21swapper/022:15:120
1090199151,12cyclictest20199-21apt-get23:25:120
10901991510,3cyclictest0-21swapper/022:35:150
10901991510,3cyclictest0-21swapper/022:22:060
1090199150,13cyclictest0-21swapper/020:25:010
296242140,3sleep229637-21cron23:00:002
1090499149,3cyclictest0-21swapper/323:20:143
1090499141,3cyclictest12517-21sh21:29:143
10904991411,2cyclictest0-21swapper/319:15:143
10904991410,2cyclictest0-21swapper/322:30:173
1090499140,13cyclictest0-21swapper/323:25:143
1090499140,12cyclictest28951-21modprobe00:10:153
1090499140,12cyclictest12218-21ssh22:04:153
1090499140,12cyclictest0-21swapper/323:30:433
1090499140,12cyclictest0-21swapper/321:40:133
1090499140,12cyclictest0-21swapper/319:50:123
1090399149,3cyclictest22590-21aten2.4_r3power21:40:132
10903991411,2cyclictest28209-21kworker/u8:222:24:052
10903991411,2cyclictest21269-21kworker/u8:120:57:042
10903991411,2cyclictest13615-21kworker/u8:022:50:042
10903991411,2cyclictest0-21swapper/221:17:562
10903991411,2cyclictest0-21swapper/200:12:262
1090399140,9cyclictest0-21swapper/222:07:052
1090399140,3cyclictest0-21swapper/223:00:172
1090399140,12cyclictest21209-21munin-node2
1090399140,12cyclictest0-21swapper/220:40:122
1090399140,12cyclictest0-21swapper/200:07:572
1090399140,10cyclictest0-21swapper/222:02:012
1090299149,3cyclictest0-21swapper/123:10:001
1090299142,7cyclictest0-21swapper/120:00:001
1090299142,7cyclictest0-21swapper/119:45:011
1090299142,6cyclictest0-21swapper/121:45:011
10902991411,2cyclictest207150irq/24-eth121:54:511
10902991411,2cyclictest17264-21ssh00:33:421
10902991411,2cyclictest0-21swapper/121:31:321
10902991411,2cyclictest0-21swapper/100:27:411
10902991410,2cyclictest9684-21munin-node1
1090299140,3cyclictest0-21swapper/122:45:001
1090299140,2cyclictest0-21swapper/123:19:111
1090299140,2cyclictest0-21swapper/122:20:421
1090299140,2cyclictest0-21swapper/121:45:521
1090299140,13cyclictest0-21swapper/122:05:421
1090299140,12cyclictest0-21swapper/121:23:021
1090199149,3cyclictest9153-21ssh23:48:440
1090199149,3cyclictest0-21swapper/021:38:080
1090199142,7cyclictest8411-21sh21:25:010
1090199141,2cyclictest15682-21apt-get23:20:120
1090199140,3cyclictest6095-21pzem_power20:15:410
1090199140,13cyclictest0-21swapper/022:51:020
1090199140,12cyclictest8697-21ssh21:25:100
1090199140,12cyclictest21678-21ssh00:01:580
1090199140,12cyclictest21678-21ssh00:01:570
1090199140,12cyclictest0-21swapper/023:50:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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