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2026-07-13 - 02:13

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 Jul 12, 2026 12:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27404112252169,20sleep40-21swapper/407:06:064
27403762240166,22sleep70-21swapper/707:05:377
27405092238167,23sleep10-21swapper/107:07:321
27404482221189,21sleep50-21swapper/507:06:395
27406352220186,22sleep30-21swapper/307:09:193
27404042218160,48sleep60-21swapper/607:05:596
27405282216185,20sleep00-21swapper/007:07:470
27405102214173,26sleep20-21swapper/207:07:332
274090399290,1cyclictest0-21swapper/610:35:196
274090399280,4cyclictest2812474-21awk09:10:016
274090399270,1cyclictest2880380-21ls11:05:006
274090399270,1cyclictest0-21swapper/612:10:006
274089999270,25cyclictest2898078-21perf11:35:005
274088999270,21cyclictest0-21swapper/109:35:131
274089999264,4cyclictest0-21swapper/511:06:035
274088999260,21cyclictest0-21swapper/107:45:121
274090499250,24cyclictest2859690-21awk10:30:007
274090499250,24cyclictest2743969-21latency_hist07:15:017
274090399250,1cyclictest0-21swapper/610:10:116
274089999250,24cyclictest0-21swapper/511:00:035
274089999250,12cyclictest0-21swapper/508:43:165
274089899250,24cyclictest0-21swapper/410:30:214
2740894992523,1cyclictest0-21swapper/312:25:123
274089299250,1cyclictest0-21swapper/211:40:112
2740889992521,1cyclictest2824692-21apt-get09:30:121
2740889992521,0cyclictest0-21swapper/108:50:131
2740889992520,0cyclictest0-21swapper/110:05:131
274088999250,24cyclictest2933426-21idleruntime-cro12:35:011
274090499240,24cyclictest2874429-21cron10:55:007
274090499240,24cyclictest0-21swapper/712:20:177
274090499240,23cyclictest2868519-21idleruntime-cro10:45:007
274090499240,23cyclictest0-21swapper/710:00:127
2740903992422,2cyclictest0-21swapper/612:10:126
2740903992421,3cyclictest0-21swapper/610:55:136
274090399240,1cyclictest2904398-21apt-get11:45:136
274090399240,1cyclictest0-21swapper/607:45:116
2740894992423,1cyclictest0-21swapper/312:00:123
274089499240,24cyclictest2898494-21apt-get11:35:113
274089299240,24cyclictest2890932-21ntpq11:20:182
2740889992422,2cyclictest0-21swapper/111:40:111
2740889992420,0cyclictest0-21swapper/112:15:101
2740889992420,0cyclictest0-21swapper/108:05:191
274088999240,21cyclictest0-21swapper/111:15:211
274088999240,1cyclictest0-21swapper/109:25:131
274088999240,0cyclictest0-21swapper/108:10:131
2740887992420,3cyclictest2918719-21awk12:10:000
2740904992323,0cyclictest0-21swapper/711:50:197
2740904992320,2cyclictest2889657-21apt-get11:20:137
274090499230,22cyclictest2833536-21apt-get09:45:117
2740903992323,0cyclictest0-21swapper/607:50:136
2740903992322,1cyclictest0-21swapper/610:25:116
2740903992320,3cyclictest0-21swapper/608:25:196
2740903992316,7cyclictest0-21swapper/607:40:006
274090399230,23cyclictest0-21swapper/609:25:006
274090399230,22cyclictest2868578-21packagekitd10:45:006
274090399230,22cyclictest0-21swapper/608:45:126
274090399230,22cyclictest0-21swapper/607:40:136
274090399230,21cyclictest2789273-21apt-get08:30:126
274090399230,1cyclictest2908657-21ntpq11:50:186
274090399230,0cyclictest0-21swapper/609:10:116
274089999230,22cyclictest2899827-21ntpq11:35:185
274089999230,22cyclictest2787607-21taskset08:25:185
274089999230,22cyclictest2749277-21sh07:20:205
274089999230,22cyclictest0-21swapper/509:55:125
2740898992321,1cyclictest0-21swapper/409:10:124
274089899230,22cyclictest2886266-21munin-run11:15:004
274089899230,22cyclictest2836054-21munin-run09:49:594
274089899230,22cyclictest0-21swapper/411:40:004
274089899230,22cyclictest0-21swapper/411:00:184
2740894992323,0cyclictest0-21swapper/311:00:003
2740894992322,1cyclictest2833536-21apt-get09:45:103
2740894992321,1cyclictest0-21swapper/311:15:203
274089499230,23cyclictest2856732-21grep10:25:003
274089299230,23cyclictest0-21swapper/211:25:182
274089299230,23cyclictest0-21swapper/211:25:182
274089299230,22cyclictest82950irq/129-eno111:35:112
274089299230,22cyclictest2857155-21apt-get10:25:102
2740889992320,0cyclictest0-21swapper/107:25:101
274088999230,22cyclictest0-21swapper/109:15:121
274088799230,23cyclictest2771117-21idleruntime-cro08:00:010
274088799230,22cyclictest2794723-21latency_hist08:40:010
274088799230,22cyclictest0-21swapper/011:00:130
274088799230,22cyclictest0-21swapper/008:25:130
274088799230,22cyclictest0-21swapper/007:35:120
2740904992221,1cyclictest881rcuc/710:40:007
2740904992221,1cyclictest2910279-21apt-get11:55:127
2740904992221,1cyclictest0-21swapper/709:05:117
274090499220,22cyclictest2850792-21perf10:15:007
274090499220,21cyclictest2913240-21apt-get12:00:127
274090499220,21cyclictest2839418-21apt-get09:55:127
274090499220,21cyclictest2774503-21apt-get08:05:127
274090499220,21cyclictest0-21swapper/711:35:127
274090499220,1cyclictest0-21swapper/709:40:137
274090499220,1cyclictest0-21swapper/707:45:177
274090499220,0cyclictest0-21swapper/712:15:127
2740903992222,0cyclictest0-21swapper/607:30:126
2740903992222,0cyclictest0-21swapper/607:30:126
2740903992221,1cyclictest0-21swapper/609:45:006
2740903992221,1cyclictest0-21swapper/609:15:136
2740903992221,1cyclictest0-21swapper/608:35:126
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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