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2026-06-25 - 12:46

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 00:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
511221130,3sleep00-21swapper/020:53:190
511221130,3sleep00-21swapper/020:53:190
511221130,3sleep00-21swapper/020:53:190
122452890,3chrt0-21swapper/322:38:233
122452890,3chrt0-21swapper/322:38:233
122452890,3chrt0-21swapper/322:38:233
249242880,8sleep024012-21kworker/0:0-events23:13:170
249242880,8sleep024012-21kworker/0:0-events23:13:170
107542840,3chrt0-21swapper/321:08:183
107542840,3chrt0-21swapper/321:08:183
107542840,3chrt0-21swapper/321:08:183
225682780,3chrt0-21swapper/000:33:170
181602760,2chrt0-21swapper/322:53:263
181602760,2chrt0-21swapper/322:53:263
181602760,2chrt0-21swapper/322:53:263
208852730,2sleep30-21swapper/323:03:153
208852730,2sleep30-21swapper/323:03:153
99982710,2chrt9999-21grep19:38:271
99982710,2chrt9999-21grep19:38:271
212202640,2chrt0-21swapper/320:08:243
212202640,2chrt0-21swapper/320:08:243
188302550,3chrt0-21swapper/100:23:171
188302550,3chrt0-21swapper/100:23:171
41472460,4sleep30-21swapper/323:43:233
41472460,4sleep30-21swapper/323:43:233
121462460,2sleep010682-40mandb00:03:310
121462460,2sleep010682-40mandb00:03:310
248822450,3sleep30-21swapper/321:48:033
248822450,3sleep30-21swapper/321:48:033
205962440,4sleep0171ktimers/020:08:170
205962440,4sleep0171ktimers/020:08:170
130262440,9sleep013029-21timerandwakeup21:13:250
130262440,9sleep013029-21timerandwakeup21:13:250
32155994136,3cyclictest0-21swapper/000:03:100
32155994136,3cyclictest0-21swapper/000:03:100
32155994136,3cyclictest0-21swapper/000:03:100
190212410,1sleep00-21swapper/020:03:230
190212410,1sleep00-21swapper/020:03:230
190212410,1sleep00-21swapper/020:03:230
3215799382,28cyclictest11615-21ntp_states00:03:231
3215799382,28cyclictest11615-21ntp_states00:03:231
293182380,3sleep30-21swapper/321:58:193
293182380,3sleep30-21swapper/321:58:193
293182380,3sleep30-21swapper/321:58:193
244282370,3sleep20-21swapper/200:38:182
244282370,3sleep20-21swapper/200:38:182
88542360,3sleep30-21swapper/323:58:103
88542360,3sleep30-21swapper/323:58:103
88542360,3sleep30-21swapper/323:58:103
55552360,3sleep032154-21cyclictest19:28:170
55552360,3sleep032154-21cyclictest19:28:170
55552360,3sleep032154-21cyclictest19:28:170
32155993629,5cyclictest550-21cron21:43:030
32155993629,5cyclictest550-21cron21:43:030
229062360,3sleep00-21swapper/023:08:150
229062360,3sleep00-21swapper/023:08:150
229062360,3sleep00-21swapper/023:08:150
134372360,2sleep013440-21fschecks_count22:43:140
134372360,2sleep013440-21fschecks_count22:43:140
134372360,2sleep013440-21fschecks_count22:43:140
179092350,5sleep2351rcuc/221:28:152
32155993428,4cyclictest2762-21fschecks_count20:48:160
32155993428,4cyclictest2762-21fschecks_count20:48:160
32157993324,7cyclictest25817-21fschecks_count20:23:161
32157993324,7cyclictest25817-21fschecks_count20:23:161
32155993327,5cyclictest20739-21unixbench_singl21:33:250
32155993327,5cyclictest20739-21unixbench_singl21:33:250
32155993326,5cyclictest7219-21fschecks_count23:53:150
32155993325,6cyclictest642-21kernelversion22:08:170
16732330,3sleep20-21swapper/223:38:162
16732330,3sleep20-21swapper/223:38:162
16732330,3sleep20-21swapper/223:38:162
3217799322,24cyclictest10739-21chrt00:03:093
3217799322,24cyclictest10739-21chrt00:03:093
3217799322,24cyclictest10739-21chrt00:03:093
32157993228,3cyclictest32154-21cyclictest22:43:021
32157993228,3cyclictest32154-21cyclictest22:43:021
32157993228,3cyclictest32154-21cyclictest22:43:021
32155993225,5cyclictest11903-21kernelversion22:38:170
263312320,2sleep026363-21latency_hist23:18:130
263312320,2sleep026363-21latency_hist23:18:130
32157993122,7cyclictest18374-21fschecks_count20:03:151
32157993122,7cyclictest18374-21fschecks_count20:03:151
32157993122,7cyclictest18374-21fschecks_count20:03:151
32155993125,5cyclictest22047-21/usr/sbin/munin00:33:210
32155993125,5cyclictest22047-21/usr/sbin/munin00:33:210
32155993125,4cyclictest31377-21cut20:38:150
32155993124,5cyclictest32154-21cyclictest23:58:040
32155993124,5cyclictest32154-21cyclictest23:58:040
32155993124,5cyclictest32154-21cyclictest23:58:040
32155993123,5cyclictest674-21gpm20:23:090
32155993123,5cyclictest674-21gpm20:23:090
299142310,3sleep10-21swapper/120:33:181
299142310,3sleep10-21swapper/120:33:181
3216799302,19cyclictest12163-21chrt00:03:442
3216799302,19cyclictest12163-21chrt00:03:442
32157993022,6cyclictest11992-21sshd19:43:441
32157993022,6cyclictest11992-21sshd19:43:441
32157993021,7cyclictest23426-21fschecks_count21:43:151
32157993021,7cyclictest23426-21fschecks_count21:43:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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