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2026-07-08 - 01:56

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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.

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 rack4slot1s.osadl.org (updated Wed Jul 08, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
957121130,2sleep1281ktimers/119:28:331
957121130,2sleep1281ktimers/119:28:331
67612970,2chrt6762-21sendmail-msp19:23:151
67612970,2chrt6762-21sendmail-msp19:23:151
43912890,1sleep00-21swapper/022:08:280
43912890,1sleep00-21swapper/022:08:280
43912890,1sleep00-21swapper/022:08:280
160482890,2sleep016050-21fschecks_time21:13:290
160482890,2sleep016050-21fschecks_time21:13:290
314492640,3chrt617-21lldpd23:18:550
314492640,3chrt617-21lldpd23:18:550
314492640,3chrt617-21lldpd23:18:550
77322560,2sleep07829-21sendmail_mailqu19:23:350
77322560,2sleep07829-21sendmail_mailqu19:23:350
83482510,7sleep08341-21tail22:18:330
83482510,7sleep08341-21tail22:18:330
83482510,7sleep08341-21tail22:18:330
278282430,2sleep00-21swapper/000:38:270
278282430,2sleep00-21swapper/000:38:270
3727994235,4cyclictest0-21swapper/100:03:311
3722994134,4cyclictest0-21swapper/000:03:220
3722994134,4cyclictest0-21swapper/000:03:220
3722994134,4cyclictest0-21swapper/000:03:220
136052400,4sleep30-21swapper/319:38:363
27282380,3sleep30-21swapper/322:03:323
27282380,3sleep30-21swapper/322:03:323
27282380,3sleep30-21swapper/322:03:323
372999362,26cyclictest14523-21chrt00:03:203
372999362,26cyclictest14523-21chrt00:03:203
372999362,26cyclictest14523-21chrt00:03:203
3727993630,4cyclictest4276-21sendmail20:43:141
154422350,2sleep015441-21switchtime19:43:360
154422350,2sleep015441-21switchtime19:43:360
154422350,2sleep015441-21switchtime19:43:360
3727993428,4cyclictest19306-21wc21:23:141
3727993428,4cyclictest19306-21wc21:23:141
3727993428,4cyclictest19306-21wc21:23:141
3722993322,8cyclictest15798-21unixbench-2d00:03:400
3722993322,8cyclictest15798-21unixbench-2d00:03:400
3727993226,4cyclictest0-21swapper/119:43:141
3722993226,4cyclictest1346-21avahi-daemon22:13:350
3722993226,4cyclictest1346-21avahi-daemon22:13:350
3722993222,9cyclictest13024-21threads21:03:370
3722993222,9cyclictest13024-21threads21:03:370
3722993222,9cyclictest13024-21threads21:03:370
3727993121,7cyclictest7797-21needreboot23:43:321
3727993121,7cyclictest7797-21needreboot23:43:321
3727993121,7cyclictest7797-21needreboot23:43:321
132372310,3sleep20-21swapper/221:03:382
132372310,3sleep20-21swapper/221:03:382
132372310,3sleep20-21swapper/221:03:382
372899304,12cyclictest0-21swapper/200:03:352
372899304,12cyclictest0-21swapper/200:03:352
3727993025,3cyclictest14401-21cron00:03:151
3727993025,3cyclictest14401-21cron00:03:151
3727993024,4cyclictest16684-21gltestperf19:48:291
3727993024,4cyclictest16684-21gltestperf19:48:291
3727993024,4cyclictest16684-21gltestperf19:48:291
3727993024,4cyclictest16684-21gltestperf19:48:291
3727993024,4cyclictest0-21swapper/123:33:151
3727993024,4cyclictest0-21swapper/123:33:151
3727993024,4cyclictest0-21swapper/123:33:151
3727993022,6cyclictest29776-21gltestperf20:23:281
3727993022,6cyclictest29776-21gltestperf20:23:281
3727993022,5cyclictest4841-21gltestperf20:43:281
3727993022,5cyclictest4841-21gltestperf20:43:281
3722993025,4cyclictest24896-21timerwakeupswit20:08:370
3722993025,4cyclictest24896-21timerwakeupswit20:08:370
3722993024,4cyclictest1346-21avahi-daemon19:53:350
3722993024,4cyclictest1346-21avahi-daemon19:53:350
3722993023,5cyclictest9172-21cut23:48:270
3722993023,5cyclictest550-21cron22:48:150
3722993023,5cyclictest550-21cron22:48:150
3722993023,5cyclictest30994-21cut21:53:280
3722993023,5cyclictest30994-21cut21:53:280
3722993023,5cyclictest12712-21fschecks_count19:38:270
3727992924,3cyclictest16669-21sendmail_mailqu21:13:361
3727992924,3cyclictest16669-21sendmail_mailqu21:13:361
3727992924,3cyclictest11468-21cpu22:28:261
3727992924,3cyclictest0-21swapper/100:03:351
3727992924,3cyclictest0-21swapper/100:03:351
3727992923,4cyclictest22977-21gltestperf22:58:281
3727992923,4cyclictest22977-21gltestperf22:58:281
3727992923,4cyclictest22977-21gltestperf22:58:281
3727992923,4cyclictest21708-21gltestperf21:28:291
3727992923,4cyclictest21708-21gltestperf21:28:291
3727992922,5cyclictest11758-21gltestperf22:28:281
3727992922,5cyclictest11758-21gltestperf22:28:281
3722992924,3cyclictest0-21swapper/021:28:370
3722992924,3cyclictest0-21swapper/021:28:370
3722992924,3cyclictest0-21swapper/020:03:150
3722992924,3cyclictest0-21swapper/020:03:150
3722992923,5cyclictest21898-21latency_hist00:23:140
3722992923,5cyclictest21898-21latency_hist00:23:140
3722992923,5cyclictest21898-21latency_hist00:23:140
3722992923,4cyclictest6508-21sshd19:20:330
3722992923,4cyclictest6508-21sshd19:20:330
3722992923,4cyclictest1346-21avahi-daemon22:28:360
3722992923,4cyclictest1346-21avahi-daemon22:28:360
3722992922,5cyclictest4186-21sshd20:42:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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