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2026-07-10 - 04:35

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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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 Fri Jul 10, 2026 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2346377997129,36cyclictest0-21swapper/222:35:272
2346377997030,34cyclictest0-21swapper/222:05:002
2346377996828,34cyclictest0-21swapper/200:35:302
2346377996715,17cyclictest0-21swapper/200:35:012
2346377996715,17cyclictest0-21swapper/200:35:012
2346373996712,41cyclictest12-21ksoftirqd/000:30:010
2346377996626,6cyclictest0-21swapper/220:55:282
2346377996626,6cyclictest0-21swapper/220:55:282
2346377996327,7cyclictest0-21swapper/219:20:272
234637699613,3cyclictest0-21swapper/123:05:021
2346376996056,2cyclictest0-21swapper/100:30:011
234637399561,50cyclictest0-21swapper/020:40:110
234637399561,4cyclictest0-21swapper/020:25:170
234637799534,35cyclictest1660-21snmpd23:30:182
234637399539,16cyclictest0-21swapper/023:00:010
234637399534,46cyclictest0-21swapper/023:25:290
2346373995339,8cyclictest2374224-21lsblk21:50:200
2346376995243,5cyclictest2348422-21apt-key19:20:011
234637399523,8cyclictest2348306-21munin-run19:20:010
2346377995143,5cyclictest2371275-21apt-get21:35:012
2346373995141,5cyclictest20650irq/252-8000000.ethernet00:15:290
2346373995134,13cyclictest131ktimers/019:55:110
2346373995044,4cyclictest0-21swapper/022:20:140
2346373995043,4cyclictest0-21swapper/023:45:160
2346373994928,16cyclictest131ktimers/023:30:110
2346377994837,5cyclictest2361029-21grep20:30:282
2346373994840,4cyclictest20850irq/208-8000000.ethernet23:00:270
2346373994840,4cyclictest167350irq/118-8000000.ethernet-tx022:25:190
2346373994840,4cyclictest167350irq/118-8000000.ethernet-tx022:25:180
234637399481,42cyclictest0-21swapper/023:50:200
234637399481,42cyclictest0-21swapper/023:50:190
2346377994737,7cyclictest2395268-21munin-plugin-st23:55:002
2346377994737,7cyclictest2395268-21munin-plugin-st23:55:002
2346377994733,10cyclictest0-21swapper/223:20:282
2346376994735,8cyclictest0-21swapper/120:10:001
2346373994739,6cyclictest2350931-21munin-plugin-st19:35:000
2346373994739,4cyclictest167350irq/118-8000000.ethernet-tx021:00:170
2346373994736,7cyclictest0-21swapper/000:00:330
2346373994638,4cyclictest167350irq/118-8000000.ethernet-tx023:40:270
2346373994634,9cyclictest0-21swapper/021:45:300
234637399461,42cyclictest0-21swapper/019:20:110
2346376994538,4cyclictest2357770-21munin-plugin-st20:14:591
2346376994528,10cyclictest0-21swapper/122:30:321
2346373994529,12cyclictest0-21swapper/023:15:340
234637399452,6cyclictest2364995-21uname20:55:220
234637399452,6cyclictest2364995-21uname20:55:220
2346373994515,21cyclictest15-21rcuc/021:30:020
2346377994421,15cyclictest0-21swapper/220:00:002
2346376994436,5cyclictest2356094-21munin-plugin-st20:04:591
2346376994432,7cyclictest2376377-21grep22:00:331
2346376994431,8cyclictest0-21swapper/121:10:281
2346376994429,11cyclictest0-21swapper/119:15:021
2346373994437,3cyclictest0-21swapper/019:25:250
2346373994435,7cyclictest2363587-21unixbench_multi20:45:280
234637399443,38cyclictest0-21swapper/020:15:120
234637399443,38cyclictest0-21swapper/020:15:120
2346373994428,14cyclictest0-21swapper/020:05:200
234637399441,6cyclictest15-21rcuc/021:35:010
2346376994331,8cyclictest0-21swapper/123:20:281
2346373994339,2cyclictest0-21swapper/021:25:010
2346373994335,4cyclictest167350irq/118-8000000.ethernet-tx022:30:180
2346373994334,6cyclictest20850irq/208-8000000.ethernet22:45:010
2346373994327,10cyclictest0-21swapper/022:50:200
234637399431,40cyclictest0-21swapper/000:20:280
234637799426,21cyclictest2396322-21/usr/sbin/munin00:00:212
2346376994232,5cyclictest0-21swapper/121:35:001
2346376994230,9cyclictest0-21swapper/122:30:011
2346376994230,9cyclictest0-21swapper/122:30:011
2346376994230,8cyclictest0-21swapper/123:50:311
2346376994230,8cyclictest0-21swapper/123:50:311
2346376994228,9cyclictest2365352-21cron21:00:001
2346376994228,9cyclictest2365352-21cron21:00:001
2346376994227,11cyclictest0-21swapper/119:55:181
2346376994225,8cyclictest0-21swapper/122:55:311
234637399427,28cyclictest0-21swapper/019:10:010
234637399425,31cyclictest2347173-21latency_hist19:15:020
2346373994234,4cyclictest2372414-21latency_hist21:40:010
2346373994231,6cyclictest0-21swapper/021:05:220
234637399422,4cyclictest2361120-21users20:30:300
234637399422,10cyclictest2361867-21grep20:35:280
234637799413,20cyclictest2367253-21/usr/sbin/munin21:10:172
2346377994130,7cyclictest0-21swapper/223:55:312
2346376994131,6cyclictest2389294-21grep23:15:341
2346376994131,5cyclictest0-21swapper/123:39:591
2346376994128,8cyclictest0-21swapper/123:30:201
2346376994126,10cyclictest0-21swapper/120:25:211
2346373994135,4cyclictest2402040-21munin-plugin-st00:35:000
2346373994135,4cyclictest2402040-21munin-plugin-st00:34:590
2346373994131,5cyclictest0-21swapper/019:40:280
2346373994126,10cyclictest0-21swapper/022:00:320
234637399412,5cyclictest0-21swapper/022:05:260
2346377994027,7cyclictest1660-21snmpd22:35:012
2346377994025,10cyclictest0-21swapper/222:50:172
2346376994033,3cyclictest2363567-21unixbench_multi20:45:271
2346376994028,8cyclictest0-21swapper/122:45:321
2346376994028,8cyclictest0-21swapper/121:50:321
2346376994028,7cyclictest0-21swapper/100:00:231
2346376994024,11cyclictest0-21swapper/100:15:001
234637699401,5cyclictest0-21swapper/100:35:021
234637399403,35cyclictest0-21swapper/022:50:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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