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2025-11-03 - 06:37

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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 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.

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 rackeslot6s.osadl.org (updated Mon Nov 03, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1861643996812,9cyclictest1916487-21/usr/sbin/munin00:30:211
186164099681,63cyclictest0-21swapper/023:15:140
186164499667,12cyclictest1902596-21apt-get23:10:012
1861643996421,6cyclictest0-21swapper/100:00:291
1861643996219,6cyclictest0-21swapper/119:35:281
1861643996121,34cyclictest0-21swapper/119:50:231
1861643996120,3cyclictest0-21swapper/120:10:281
186164499605,23cyclictest32-21ksoftirqd/220:30:012
1861643995920,31cyclictest0-21swapper/119:25:271
1861643995919,4cyclictest0-21swapper/120:20:191
186164499583,37cyclictest30-21rcuc/220:50:202
1861643995823,27cyclictest0-21swapper/119:45:311
1861643995822,4cyclictest0-21swapper/119:55:331
1861643995821,32cyclictest0-21swapper/100:25:251
1861643995821,32cyclictest0-21swapper/100:25:251
1861643995818,4cyclictest0-21swapper/122:40:281
1861643995718,3cyclictest0-21swapper/120:35:231
1861643995717,3cyclictest0-21swapper/120:15:211
1861643995629,23cyclictest0-21swapper/120:45:321
1861643995619,8cyclictest0-21swapper/121:05:301
1861643995616,9cyclictest0-21swapper/122:10:301
1861643995616,6cyclictest1905349-21latency_hist23:25:011
1861644995536,13cyclictest311ktimers/223:55:172
1861644995536,13cyclictest311ktimers/223:55:172
1861643995518,8cyclictest1896617-21grep22:30:351
1861643995514,8cyclictest0-21swapper/119:20:291
1861644995436,12cyclictest311ktimers/222:50:132
1861643995419,7cyclictest1888975-21grep21:45:301
1861644995330,14cyclictest311ktimers/221:20:142
186164499523,31cyclictest32-21ksoftirqd/223:35:012
1861644995029,16cyclictest311ktimers/221:10:112
1861643995021,5cyclictest1884740-21grep21:20:321
1861644994940,5cyclictest1878871-21munin-plugin-st20:50:002
1861644994932,11cyclictest311ktimers/200:05:122
186164399497,17cyclictest1861637-21cyclictest00:15:011
186164399497,17cyclictest1861637-21cyclictest00:15:011
1861643994918,6cyclictest0-21swapper/121:35:291
1861643994913,10cyclictest1901218-21sh23:00:211
1861640994918,13cyclictest131ktimers/023:10:320
1861643994839,5cyclictest1862446-21munin-plugin-st19:15:001
1861643994835,8cyclictest0-21swapper/120:05:011
1861643994835,8cyclictest0-21swapper/120:05:011
1861644994729,13cyclictest311ktimers/220:05:122
1861644994726,15cyclictest311ktimers/200:10:162
1861644994726,15cyclictest311ktimers/200:10:162
1861643994724,19cyclictest166150irq/127-8000000.ethernet-tx121:10:151
1861643994720,8cyclictest1880764-21/usr/sbin/munin21:00:241
1861640994739,4cyclictest20850irq/251-8000000.ethernet20:35:130
1861640994739,4cyclictest131ktimers/020:30:010
1861640994737,4cyclictest0-21swapper/020:40:170
186164099473,19cyclictest15-21rcuc/019:30:010
1861644994630,12cyclictest311ktimers/222:55:162
1861644994612,5cyclictest30-21rcuc/222:05:312
1861643994634,9cyclictest0-21swapper/123:40:281
1861643994634,9cyclictest0-21swapper/123:40:281
1861640994636,5cyclictest1890776-21munin-plugin-st22:00:010
1861640994632,9cyclictest1885543-21grep21:25:310
1861644994528,11cyclictest311ktimers/223:35:122
1861644994525,13cyclictest311ktimers/200:25:132
1861644994525,13cyclictest311ktimers/200:25:132
1861643994521,5cyclictest1646-21snmpd22:07:221
1861640994540,3cyclictest0-21swapper/023:40:010
1861640994524,18cyclictest20850irq/251-8000000.ethernet00:30:250
1861640994522,20cyclictest0-21swapper/000:15:280
1861644994428,12cyclictest311ktimers/200:30:142
1861640994438,4cyclictest0-21swapper/019:35:200
1861640994436,4cyclictest0-21swapper/022:10:290
1861640994432,8cyclictest0-21swapper/023:40:280
1861640994432,8cyclictest0-21swapper/023:40:280
186164099441,9cyclictest0-21swapper/023:25:010
1861644994335,5cyclictest1905172-21grep23:20:312
1861644994324,15cyclictest311ktimers/220:40:152
1861640994329,10cyclictest0-21swapper/020:15:210
186164099431,33cyclictest0-21swapper/020:00:120
186164099431,33cyclictest0-21swapper/020:00:120
1861644994232,6cyclictest0-21swapper/222:45:282
1861640994236,4cyclictest0-21swapper/019:15:120
1861640994236,3cyclictest0-21swapper/022:15:280
1861640994232,6cyclictest131ktimers/022:30:350
1861640994227,11cyclictest0-21swapper/023:50:220
1861644994131,7cyclictest0-21swapper/200:20:282
1861644994130,8cyclictest1883815-21grep21:15:302
1861644994127,9cyclictest0-21swapper/220:00:292
1861644994127,9cyclictest0-21swapper/220:00:292
1861644994126,11cyclictest0-21swapper/223:10:292
1861644994126,11cyclictest0-21swapper/219:25:312
1861644994123,12cyclictest311ktimers/221:05:152
186164499411,10cyclictest0-21swapper/219:45:012
1861643994129,8cyclictest0-21swapper/121:30:011
1861643994120,3cyclictest27250irq/343-s-wl18xx19:30:131
1861640994133,5cyclictest1909534-21munin-plugin-st23:50:000
1861640994133,4cyclictest20850irq/251-8000000.ethernet00:05:170
186164099411,5cyclictest0-21swapper/021:55:010
186164099411,37cyclictest0-21swapper/020:50:160
186164099411,34cyclictest0-21swapper/021:15:150
186164499407,24cyclictest30-21rcuc/222:25:012
1861644994022,13cyclictest311ktimers/200:35:192
1861644994020,11cyclictest0-21swapper/221:55:302
1861643994027,9cyclictest0-21swapper/123:15:321
186164099403,33cyclictest1897471-21unixbench_singl22:35:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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