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2026-03-29 - 09:40

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, slot #4

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 rack8slot4s.osadl.org (updated Sun Mar 29, 2026 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22898432247182,21sleep50-21swapper/519:08:195
22898402233167,22sleep20-21swapper/219:08:172
22897812222176,15sleep60-21swapper/619:07:236
22897342221183,24sleep00-21swapper/019:06:460
22896452216183,21sleep30-21swapper/319:05:283
22899492215182,21sleep70-21swapper/719:09:507
22896552215187,18sleep40-21swapper/419:05:364
22899432213173,25sleep10-21swapper/119:09:441
229020499300,1cyclictest0-21swapper/623:20:146
229019099280,2cyclictest2460805-21perf00:05:012
229019999270,22cyclictest2342762-21munin-run20:40:015
2290190992713,1cyclictest0-21swapper/223:20:132
229018899270,26cyclictest2408806-21awk22:35:001
2290190992619,6cyclictest2428804-21munin-run23:10:002
229019099260,25cyclictest0-21swapper/219:10:122
229019099250,24cyclictest2331040-21cron20:20:012
229020599240,23cyclictest2308380-21apt-get19:40:127
229019999240,23cyclictest0-21swapper/522:00:115
229019799240,24cyclictest0-21swapper/423:30:014
229019099240,23cyclictest0-21swapper/221:25:102
229018499240,23cyclictest0-21swapper/023:45:130
229018499240,23cyclictest0-21swapper/023:45:130
229020599230,2cyclictest2437385-21perf23:25:017
229020599230,22cyclictest2481600-21basename00:40:007
229020599230,22cyclictest2296518-21perf19:20:017
229020499230,22cyclictest2307943-21munin-run19:40:006
229019999230,22cyclictest0-21swapper/521:35:115
229019999230,21cyclictest2470317-21apt-get00:20:125
2290197992322,0cyclictest0-21swapper/400:35:144
2290197992321,1cyclictest2320072-21apt-get20:00:124
229019799230,22cyclictest2328624-21apt-get20:15:134
229019799230,22cyclictest2322921-21apt-get20:05:124
229019499230,22cyclictest0-21swapper/322:05:123
229019499230,22cyclictest0-21swapper/319:35:123
229019499230,21cyclictest0-21swapper/320:55:133
2290190992321,1cyclictest2429219-21apt-get23:10:112
2290190992321,1cyclictest2346049-21apt-get20:45:122
2290190992321,1cyclictest0-21swapper/221:09:592
2290190992321,1cyclictest0-21swapper/220:25:012
2290190992320,2cyclictest0-21swapper/223:40:012
2290190992320,2cyclictest0-21swapper/223:40:012
2290190992320,2cyclictest0-21swapper/221:45:102
229019099230,22cyclictest0-21swapper/221:54:592
229019099230,22cyclictest0-21swapper/200:30:012
2290188992321,1cyclictest0-21swapper/122:50:121
229018899230,22cyclictest2479133-21apt-get00:35:131
229018899230,22cyclictest0-21swapper/121:09:591
229018899230,1cyclictest2336786-21munin-run20:30:011
2290184992321,1cyclictest0-21swapper/023:50:100
2290184992321,1cyclictest0-21swapper/023:50:100
229020599220,21cyclictest2428783-21cron23:09:597
2290204992220,1cyclictest2333943-21idleruntime-cro20:25:006
229020499220,21cyclictest0-21swapper/623:55:136
229020499220,21cyclictest0-21swapper/623:50:116
229020499220,21cyclictest0-21swapper/623:50:106
229020499220,21cyclictest0-21swapper/621:50:126
229020499220,21cyclictest0-21swapper/621:20:136
229020499220,1cyclictest2313655-21apt-get19:50:016
229020499220,0cyclictest0-21swapper/620:15:126
2290199992221,1cyclictest2377750-21apt-get21:40:115
229019999220,21cyclictest2302654-21apt-get19:30:105
229019999220,21cyclictest0-21swapper/523:20:145
229019999220,21cyclictest0-21swapper/523:15:115
229019999220,21cyclictest0-21swapper/522:50:115
229019999220,21cyclictest0-21swapper/521:20:135
229019999220,1cyclictest2320072-21apt-get20:00:125
229019999220,1cyclictest0-21swapper/500:00:005
2290197992221,1cyclictest2310814-21munin-run19:45:004
2290197992221,1cyclictest0-21swapper/421:00:124
2290197992221,1cyclictest0-21swapper/420:50:014
2290197992220,2cyclictest2335647-21ntpq20:25:184
2290197992220,1cyclictest2366057-21apt-get21:20:124
2290197992219,2cyclictest2369169-21apt-get21:25:124
229019799220,21cyclictest2460792-21apt-get00:05:024
229019799220,21cyclictest0-21swapper/420:20:124
229019799220,21cyclictest0-21swapper/419:35:114
229019799220,21cyclictest0-21swapper/419:20:124
2290194992220,1cyclictest2311231-21apt-get19:45:113
2290194992220,1cyclictest0-21swapper/323:55:013
2290194992220,1cyclictest0-21swapper/323:55:013
229019499220,21cyclictest2473167-21apt-get00:25:113
229019499220,21cyclictest2319652-21awk20:00:013
229019499220,21cyclictest0-21swapper/323:05:123
229019499220,21cyclictest0-21swapper/322:15:203
229019499220,21cyclictest0-21swapper/321:45:113
229019499220,21cyclictest0-21swapper/321:20:123
229019499220,21cyclictest0-21swapper/319:50:133
229019499220,21cyclictest0-21swapper/319:15:123
229019499220,21cyclictest0-21swapper/300:35:143
229019499220,21cyclictest0-21swapper/300:00:123
229019499220,1cyclictest0-21swapper/323:40:113
229019499220,1cyclictest0-21swapper/322:40:123
2290190992220,2cyclictest2299383-21awk19:25:002
229019099220,22cyclictest0-21swapper/220:45:012
229019099220,21cyclictest0-21swapper/223:25:112
229019099220,21cyclictest0-21swapper/222:20:102
229019099220,21cyclictest0-21swapper/222:15:122
229019099220,21cyclictest0-21swapper/220:05:132
229019099220,1cyclictest0-21swapper/220:55:132
2290188992221,1cyclictest2423118-21awk23:00:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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