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2026-08-02 - 06:12

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 Sun Aug 02, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3323211999,15sleep30-21swapper/319:06:503
2768210788,12sleep20-21swapper/219:05:292
3425210178,18sleep00-21swapper/019:08:040
350529478,11sleep10-21swapper/119:09:051
312862810,0sleep00-21swapper/021:23:130
17112760,0sleep30-21swapper/323:05:503
254442740,1sleep10-21swapper/123:30:161
188992280,0sleep10-21swapper/121:44:181
154462220,1sleep0101ktimersoftd/023:53:210
361199211,15cyclictest0-21swapper/322:28:043
361199210,4cyclictest0-21swapper/321:45:043
360899210,19cyclictest0-21swapper/120:10:141
361199201,18cyclictest0-21swapper/323:44:053
361199200,3cyclictest0-21swapper/323:57:053
361199200,3cyclictest0-21swapper/322:58:053
361199200,3cyclictest0-21swapper/322:02:043
361199200,3cyclictest0-21swapper/300:07:043
360899200,18cyclictest0-21swapper/120:05:121
217872200,0sleep30-21swapper/300:33:123
361199192,2cyclictest0-21swapper/319:14:063
361199190,4cyclictest0-21swapper/320:14:023
361199184,2cyclictest0-21swapper/320:36:063
361199182,1cyclictest0-21swapper/300:39:043
361199181,2cyclictest0-21swapper/320:06:043
361199172,4cyclictest0-21swapper/321:07:053
361199172,11cyclictest0-21swapper/323:23:053
361199171,5cyclictest0-21swapper/320:44:053
361199171,2cyclictest0-21swapper/321:04:053
361199171,2cyclictest0-21swapper/321:04:043
361199170,2cyclictest0-21swapper/300:28:043
3608991712,3cyclictest0-21swapper/121:34:061
360899171,14cyclictest0-21swapper/123:58:051
178012170,1sleep217800-21munin-run21:10:012
361199163,11cyclictest37-21rcuc/300:10:163
361199161,2cyclictest0-21swapper/319:36:063
3611991611,3cyclictest11100-21ssh22:10:003
360999161,3cyclictest0-21swapper/219:11:052
360999161,13cyclictest26125-21ssh21:50:592
360999161,13cyclictest10116-21sh22:08:302
360899161,13cyclictest12390-21ntp_states22:10:191
3608991611,3cyclictest0-21swapper/122:54:151
361199150,13cyclictest12621-21pzem_energy22:10:293
360999151,3cyclictest31146-21ssh22:30:142
360999151,3cyclictest0-21swapper/223:53:102
3609991511,3cyclictest0-21swapper/223:36:022
360999151,12cyclictest3649-21snmpd21:00:202
360999151,12cyclictest3649-21snmpd21:00:192
3609991510,3cyclictest25404-21ssh00:36:162
360999150,3cyclictest22411-21munin-node2
360999150,3cyclictest21327-21telnet22:20:122
3608991510,3cyclictest16239-21ssh22:15:051
3608991510,3cyclictest11191-21chrt22:10:001
360899150,3cyclictest20101-21taskset21:45:151
360899150,3cyclictest0-21swapper/120:15:151
360799150,13cyclictest0-21swapper/000:22:220
360799150,13cyclictest0-21swapper/000:22:210
360799150,13cyclictest0-21swapper/000:17:580
361199149,3cyclictest0-21swapper/321:14:413
361199140,3cyclictest0-21swapper/322:48:383
360999141,3cyclictest31195-21ssh21:56:202
3609991411,2cyclictest0-21swapper/223:12:182
360999141,11cyclictest13077-21ssh21:37:512
360999141,11cyclictest12677-21df20:55:132
360999141,11cyclictest12677-21df20:55:122
3609991410,2cyclictest0-21swapper/222:26:512
360999140,3cyclictest0-21swapper/222:49:162
360999140,3cyclictest0-21swapper/200:21:372
360999140,3cyclictest0-21swapper/200:21:372
360999140,2cyclictest0-21swapper/220:36:022
360999140,2cyclictest0-21swapper/200:26:002
360999140,13cyclictest0-21swapper/219:35:122
360999140,12cyclictest3649-21snmpd19:30:012
360999140,12cyclictest32052-21ssh23:04:252
360999140,12cyclictest24184-21ssh22:55:282
360999140,12cyclictest13605-21ssh22:11:232
360999140,12cyclictest0-21swapper/223:44:032
360999140,12cyclictest0-21swapper/222:37:512
360899149,3cyclictest9373-21diskstats00:20:141
360899149,3cyclictest9373-21diskstats00:20:131
3608991411,2cyclictest0-21swapper/123:39:461
3608991411,2cyclictest0-21swapper/122:24:361
3608991411,2cyclictest0-21swapper/121:54:451
3608991411,2cyclictest0-21swapper/121:13:161
3608991411,2cyclictest0-21swapper/100:05:551
360899141,11cyclictest23069-21cut00:00:421
360899140,13cyclictest0-21swapper/100:31:461
360899140,13cyclictest0-21swapper/100:14:461
360899140,12cyclictest24680-21sh00:35:461
360899140,12cyclictest13877-21aten2.4-expect00:25:111
360899140,12cyclictest0-21swapper/123:10:191
3607991411,2cyclictest20936-21ssh23:25:180
3607991411,2cyclictest0-21swapper/022:52:170
360799140,2cyclictest31159-21ls22:30:130
360799140,2cyclictest0-21swapper/023:38:280
360799140,13cyclictest0-21swapper/021:56:380
360799140,13cyclictest0-21swapper/000:08:170
360799140,12cyclictest8369-21ssh23:45:350
360799140,12cyclictest0-21swapper/023:34:400
360799140,12cyclictest0-21swapper/022:05:260
360799140,12cyclictest0-21swapper/021:10:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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