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2026-07-03 - 09:35

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 Jul 03, 2026 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2628521170,2sleep30-21swapper/320:38:333
2628521170,2sleep30-21swapper/320:38:333
140442790,3sleep30-21swapper/321:33:283
140442790,3sleep30-21swapper/321:33:283
140442790,3sleep30-21swapper/321:33:283
132342750,3sleep30-21swapper/300:23:333
132342750,3sleep30-21swapper/300:23:333
132342750,3sleep30-21swapper/300:23:333
60272600,2chrt4496-40mandb00:04:051
60272600,2chrt4496-40mandb00:04:051
43482600,2chrt4349-21/usr/sbin/munin21:08:250
43482600,2chrt4349-21/usr/sbin/munin21:08:250
43482600,2chrt4349-21/usr/sbin/munin21:08:250
270162590,2sleep027086-21grep23:33:340
270162590,2sleep027086-21grep23:33:340
196642560,3sleep30-21swapper/300:43:193
196642560,3sleep30-21swapper/300:43:193
196642560,3sleep30-21swapper/300:43:193
45192550,4sleep20-21swapper/200:03:142
45192550,4sleep20-21swapper/200:03:142
45192550,4sleep20-21swapper/200:03:142
93812540,2chrt0-21swapper/222:48:242
93812540,2chrt0-21swapper/222:48:242
93812540,2chrt0-21swapper/222:48:242
138062520,2sleep10-21swapper/122:58:321
138062520,2sleep10-21swapper/122:58:321
138062520,2sleep10-21swapper/122:58:321
25899995040,5cyclictest0-21swapper/000:03:180
25899995040,5cyclictest0-21swapper/000:03:180
25899995040,5cyclictest0-21swapper/000:03:180
111452470,3chrt0-21swapper/119:58:311
111452470,3chrt0-21swapper/119:58:311
80802450,3sleep30-21swapper/322:43:313
80802450,3sleep30-21swapper/322:43:313
80802450,3sleep30-21swapper/322:43:313
90622430,4sleep1271rcuc/100:13:261
90622430,4sleep1271rcuc/100:13:261
90622430,4sleep1271rcuc/100:13:261
234102420,3sleep20-21swapper/221:58:282
234102420,3sleep20-21swapper/221:58:282
234102420,3sleep20-21swapper/221:58:282
191602420,3sleep20-21swapper/221:48:232
25905994132,7cyclictest25801-21netstat20:38:281
25905994132,7cyclictest25801-21netstat20:38:281
2589999413,29cyclictest5973-21users00:03:350
2589999413,29cyclictest5973-21users00:03:350
6462400,3sleep00-21swapper/020:58:240
6462400,3sleep00-21swapper/020:58:240
6462400,3sleep00-21swapper/020:58:240
244492400,3sleep20-21swapper/220:33:332
244492400,3sleep20-21swapper/220:33:332
244492400,3sleep20-21swapper/220:33:332
211982400,2sleep30-21swapper/323:18:323
211982400,2sleep30-21swapper/323:18:323
211982400,2sleep30-21swapper/323:18:323
25899993930,7cyclictest20631-21latency_hist21:53:090
25899993930,7cyclictest20631-21latency_hist21:53:090
25899993930,7cyclictest20631-21latency_hist21:53:090
322602370,2sleep032259-21open_files23:48:320
322602370,2sleep032259-21open_files23:48:320
322602370,2sleep032259-21open_files23:48:320
25899993728,6cyclictest575-21thd19:28:320
25899993728,6cyclictest575-21thd19:28:320
234792370,2sleep00-21swapper/020:33:230
234792370,2sleep00-21swapper/020:33:230
234792370,2sleep00-21swapper/020:33:230
67772360,2chrt0-21swapper/319:48:243
67772360,2chrt0-21swapper/319:48:243
319182360,3sleep20-21swapper/219:28:252
319182360,3sleep20-21swapper/219:28:252
25905993625,4cyclictest60-21kcompactd022:22:051
25905993625,4cyclictest60-21kcompactd022:22:051
25899993630,4cyclictest32416-21gltestperf22:23:250
25899993630,4cyclictest32416-21gltestperf22:23:250
25899993630,4cyclictest32416-21gltestperf22:23:250
146002360,2sleep10-21swapper/120:08:281
146002360,2sleep10-21swapper/120:08:281
146002360,2sleep10-21swapper/120:08:281
25899993526,6cyclictest12143-21fschecks_count20:03:220
25899993526,6cyclictest12143-21fschecks_count20:03:220
25905993427,5cyclictest10683-21idleruntime-cro22:53:101
25905993427,5cyclictest10683-21idleruntime-cro22:53:101
25905993427,5cyclictest10683-21idleruntime-cro22:53:101
25905993425,2cyclictest181rcu_preempt19:53:011
25905993425,2cyclictest181rcu_preempt19:53:011
25899993424,8cyclictest8929-21kernelversion00:13:250
25899993424,8cyclictest8929-21kernelversion00:13:250
25899993424,8cyclictest8929-21kernelversion00:13:250
156662340,3sleep20-21swapper/221:38:262
156662340,3sleep20-21swapper/221:38:262
156662340,3sleep20-21swapper/221:38:262
25905993328,3cyclictest14678-21systemd-journal00:03:131
25905993328,3cyclictest14678-21systemd-journal00:03:131
25905993328,3cyclictest14678-21systemd-journal00:03:131
25905993327,4cyclictest281ktimers/120:19:311
25905993327,4cyclictest281ktimers/120:19:311
25905993327,4cyclictest281ktimers/120:19:311
2590599332,6cyclictest281ktimers/120:05:311
2590599332,6cyclictest281ktimers/120:05:311
25899993327,4cyclictest17490-21cut21:43:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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