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2026-06-12 - 22:33

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 Fri Jun 12, 2026 12:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2633721080,2sleep30-21swapper/308:03:153
2633721080,2sleep30-21swapper/308:03:153
2633721080,2sleep30-21swapper/308:03:153
320822900,2sleep00-21swapper/012:38:120
320822900,2sleep00-21swapper/012:38:120
320822900,2sleep00-21swapper/012:38:120
155572630,3chrt0-21swapper/009:03:050
155572630,3chrt0-21swapper/009:03:050
273942600,2chrt27389-21sed08:08:060
273942600,2chrt27389-21sed08:08:060
247262590,2chrt0-21swapper/209:28:042
247262590,2chrt0-21swapper/209:28:042
296872510,2sleep00-21swapper/012:33:060
296872510,2sleep00-21swapper/012:33:060
296872510,2sleep00-21swapper/012:33:060
309052480,2sleep00-21swapper/008:18:030
309052480,2sleep00-21swapper/008:18:030
252372450,4sleep20-21swapper/208:03:022
252372450,4sleep20-21swapper/208:03:022
252372450,4sleep20-21swapper/208:03:022
312342430,4sleep30-21swapper/308:18:063
312342430,4sleep30-21swapper/308:18:063
309172390,3chrt0-21swapper/309:43:083
309172390,3chrt0-21swapper/309:43:083
309172390,3chrt0-21swapper/309:43:083
6828993728,7cyclictest30703-21threads11:08:100
6828993728,7cyclictest30703-21threads11:08:100
6828993728,7cyclictest30703-21threads11:08:100
6828993728,7cyclictest30703-21threads11:08:100
110242370,2sleep011133-21fschecks_time10:18:040
6828993630,5cyclictest17488-21sendmail07:42:520
29402360,1sleep13104-21fschecks_time11:23:051
29402360,1sleep13104-21fschecks_time11:23:051
29402360,1sleep13104-21fschecks_time11:23:051
136292360,8sleep1271rcuc/108:58:041
6831993530,3cyclictest25155-21idleruntime-cro12:22:521
6831993530,3cyclictest25155-21idleruntime-cro12:22:521
6828993427,5cyclictest8966-21if_wlan011:38:050
6828993426,6cyclictest11436-21unixbench_singl07:23:150
6828993426,6cyclictest11436-21unixbench_singl07:23:150
6831993325,6cyclictest374-21ntp_offset09:48:101
6831993325,6cyclictest374-21ntp_offset09:48:101
6831993325,6cyclictest374-21ntp_offset09:48:101
6828993328,4cyclictest26303-21awk12:23:130
6828993328,4cyclictest26303-21awk12:23:130
6831993226,4cyclictest1346-21avahi-daemon12:13:111
6831993226,4cyclictest1346-21avahi-daemon12:13:111
6831993225,5cyclictest31994-21if_wlan011:13:061
6831993225,5cyclictest31994-21if_wlan011:13:061
6831993225,5cyclictest31994-21if_wlan011:13:061
6831993225,5cyclictest31994-21if_wlan011:13:061
6831993225,5cyclictest28130-21latency_hist09:37:521
6831993225,5cyclictest28130-21latency_hist09:37:521
205542320,1sleep120693-21/usr/sbin/munin10:43:051
205542320,1sleep120693-21/usr/sbin/munin10:43:051
205542320,1sleep120693-21/usr/sbin/munin10:43:051
6828993125,4cyclictest3046-21fschecks_time11:23:050
6828993125,4cyclictest3046-21fschecks_time11:23:050
6828993125,4cyclictest3046-21fschecks_time11:23:050
6828993124,5cyclictest6826-21cyclictest10:43:420
6828993124,5cyclictest6826-21cyclictest10:43:420
6828993124,5cyclictest6826-21cyclictest10:43:420
6828993123,5cyclictest18688-21fschecks_time10:38:040
6828993123,5cyclictest18688-21fschecks_time10:38:040
6831993024,4cyclictest8818-21cron10:12:521
6831993024,4cyclictest8818-21cron10:12:521
6828993026,3cyclictest1-21systemd12:03:130
6828993026,3cyclictest1-21systemd12:03:130
6828993026,3cyclictest1-21systemd12:03:130
6828993024,4cyclictest6826-21cyclictest10:23:120
6828993024,4cyclictest6826-21cyclictest10:23:120
6828993024,4cyclictest11288-21gltestperf10:18:050
6828993024,4cyclictest11288-21gltestperf10:18:050
6828993024,4cyclictest11288-21gltestperf10:18:050
6828993023,6cyclictest21510-21latency_hist12:12:570
6828993023,6cyclictest21510-21latency_hist12:12:570
6828993023,5cyclictest5608-21cron08:37:510
6828993023,5cyclictest5608-21cron08:37:510
6828993023,5cyclictest5608-21cron08:37:510
6828993023,5cyclictest15387-21sshd07:35:160
6828993023,5cyclictest15387-21sshd07:35:160
682899302,12cyclictest16-21ksoftirqd/009:19:400
682899302,12cyclictest16-21ksoftirqd/009:19:400
132142300,2sleep113235-21cat08:57:571
132142300,2sleep113235-21cat08:57:571
6831992923,4cyclictest5656-21gltestperf10:03:041
6831992923,4cyclictest5656-21gltestperf10:03:041
6831992923,4cyclictest5656-21gltestperf10:03:041
6831992923,4cyclictest21785-21gltestperf07:53:061
6831992923,4cyclictest21785-21gltestperf07:53:061
6831992923,4cyclictest15856-21missed_timers09:03:091
6831992923,4cyclictest15856-21missed_timers09:03:091
6831992920,7cyclictest27970-21fschecks_count11:03:061
6831992920,7cyclictest27970-21fschecks_count11:03:061
6831992920,7cyclictest27970-21fschecks_count11:03:061
6831992912,11cyclictest32436-21mailstats11:13:131
6831992912,11cyclictest32436-21mailstats11:13:131
6831992912,11cyclictest32436-21mailstats11:13:131
6828992922,5cyclictest6826-21cyclictest09:25:090
6828992922,5cyclictest6826-21cyclictest09:25:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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