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2026-06-26 - 01:00

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 Thu Jun 25, 2026 12:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2372221060,2sleep20-21swapper/208:03:192
2372221060,2sleep20-21swapper/208:03:192
164312980,3sleep20-21swapper/207:43:212
164312980,3sleep20-21swapper/207:43:212
164312980,3sleep20-21swapper/207:43:212
190102840,3sleep20-21swapper/210:43:192
190102840,3sleep20-21swapper/210:43:192
302342640,2chrt30233-21users12:38:271
302342640,2chrt30233-21users12:38:271
302342640,2chrt30233-21users12:38:271
127392600,3chrt0-21swapper/007:33:220
127392600,3chrt0-21swapper/007:33:220
302132480,3chrt0-21swapper/209:48:152
302132480,3chrt0-21swapper/209:48:152
302132480,3chrt0-21swapper/209:48:152
80622460,1chrt6053-21kworker/u9:1-rpciod07:23:050
80622460,1chrt6053-21kworker/u9:1-rpciod07:23:050
302842440,4chrt0-21swapper/211:13:222
302842440,4chrt0-21swapper/211:13:222
302842440,4chrt0-21swapper/211:13:222
95092420,2sleep09513-21head07:23:250
95092420,2sleep09513-21head07:23:250
313792420,3sleep131384-21sed09:48:261
313792420,3sleep131384-21sed09:48:261
313792420,3sleep131384-21sed09:48:261
54192390,2sleep05421-21fschecks_time10:08:150
54192390,2sleep05421-21fschecks_time10:08:150
54192390,2sleep05421-21fschecks_time10:08:150
4528993730,5cyclictest545-21in:imuxsock11:48:031
4528993730,5cyclictest545-21in:imuxsock11:48:031
4525993729,6cyclictest32423-21threads11:18:240
4525993729,6cyclictest32423-21threads11:18:240
4525993729,6cyclictest32423-21threads11:18:240
4525993729,6cyclictest32423-21threads11:18:240
4525993629,5cyclictest1-21systemd07:48:210
4525993629,5cyclictest1-21systemd07:48:210
4525993629,5cyclictest1-21systemd07:48:210
4525993628,6cyclictest30919-21fschecks_time08:23:150
4525993628,6cyclictest30919-21fschecks_time08:23:150
145192360,2sleep114536-21tail07:38:181
145192360,2sleep114536-21tail07:38:181
310852350,1sleep131176-21/usr/sbin/munin08:23:171
310852350,1sleep131176-21/usr/sbin/munin08:23:171
107422340,2sleep110796-21users08:53:281
107422340,2sleep110796-21users08:53:281
107422340,2sleep110796-21users08:53:281
4528993327,4cyclictest20179-21/usr/sbin/munin10:48:261
4528993327,4cyclictest20179-21/usr/sbin/munin10:48:261
4528993327,4cyclictest20179-21/usr/sbin/munin10:48:261
220902330,3chrt0-21swapper/309:23:283
220902330,3chrt0-21swapper/309:23:283
129002330,2chrt0-21swapper/210:28:152
129002330,2chrt0-21swapper/210:28:152
4528993227,3cyclictest0-21swapper/109:43:041
4528993227,3cyclictest0-21swapper/109:43:041
4528993222,8cyclictest18849-21kernelversion10:43:171
4528993222,8cyclictest18849-21kernelversion10:43:171
4525993227,3cyclictest17406-21grep07:48:030
4525993227,3cyclictest17406-21grep07:48:030
4525993227,3cyclictest17406-21grep07:48:030
4525993226,4cyclictest26160-21tail11:03:170
4525993226,4cyclictest26160-21tail11:03:170
4525993218,12cyclictest0-21swapper/011:43:150
4525993218,12cyclictest0-21swapper/011:43:150
39912320,3sleep00-21swapper/011:28:270
39912320,3sleep00-21swapper/011:28:270
4525993127,3cyclictest21151-21tail09:23:170
4525993127,3cyclictest21151-21tail09:23:170
4525993117,12cyclictest550-21cron11:53:160
4525993117,12cyclictest550-21cron11:53:160
4525993117,12cyclictest550-21cron11:53:160
184822310,3sleep20-21swapper/209:15:232
184822310,3sleep20-21swapper/209:15:232
4528993023,5cyclictest16030-21sshd10:35:131
4528993023,5cyclictest16030-21sshd10:35:131
4525993025,4cyclictest30616-21latency_hist12:43:030
4525993025,4cyclictest30616-21latency_hist12:43:030
4525993025,4cyclictest30616-21latency_hist12:43:030
4525993025,3cyclictest4520-21cyclictest12:28:110
4525993025,3cyclictest4520-21cyclictest12:28:110
4525993025,3cyclictest22286-21fschecks_time10:53:150
4525993025,3cyclictest22286-21fschecks_time10:53:150
4525993023,5cyclictest14316-21threads09:03:250
4525993023,5cyclictest14316-21threads09:03:250
4528992923,4cyclictest21708-21gltestperf07:58:171
4528992923,4cyclictest21708-21gltestperf07:58:171
4528992922,5cyclictest30286-21ntp_offset11:13:221
4528992922,5cyclictest30286-21ntp_offset11:13:221
4528992922,5cyclictest30286-21ntp_offset11:13:221
4528992921,6cyclictest4335-21threads10:03:251
4528992921,6cyclictest4335-21threads10:03:251
4528992921,6cyclictest4335-21threads10:03:251
4528992921,6cyclictest18633-21threads07:48:241
4528992921,6cyclictest18633-21threads07:48:241
4528992921,6cyclictest18633-21threads07:48:241
4528992920,7cyclictest21820-21gltestperf12:18:171
4525992924,3cyclictest428-21gltestperf08:28:170
4525992924,3cyclictest428-21gltestperf08:28:170
4525992922,5cyclictest24111-21mailstats08:03:250
4525992922,5cyclictest24111-21mailstats08:03:250
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