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2026-07-10 - 03:41

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 10, 2026 00:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
294362970,3chrt0-21swapper/219:48:342
294362970,3chrt0-21swapper/219:48:342
265632950,2sleep20-21swapper/222:33:362
265632950,2sleep20-21swapper/222:33:362
318312870,3chrt0-21swapper/222:48:312
318312870,3chrt0-21swapper/222:48:312
318312870,3chrt0-21swapper/222:48:312
219822870,1sleep10-21swapper/119:28:351
219822870,1sleep10-21swapper/119:28:351
197742810,3chrt0-21swapper/219:23:292
88072790,2sleep08811-21unixbench_singl20:18:390
88072790,2sleep08811-21unixbench_singl20:18:390
167402730,2chrt0-21swapper/120:43:161
167402730,2chrt0-21swapper/120:43:161
180242710,2sleep30-21swapper/320:43:383
180242710,2sleep30-21swapper/320:43:383
180242710,2sleep30-21swapper/320:43:383
44752680,3chrt0-21swapper/320:08:323
44752680,3chrt0-21swapper/320:08:323
228282630,3sleep00-21swapper/022:23:370
228282630,3sleep00-21swapper/022:23:370
64852620,3sleep115799-21cyclictest23:08:281
64852620,3sleep115799-21cyclictest23:08:281
64852620,3sleep115799-21cyclictest23:08:281
227382610,9sleep122743-21sed23:48:401
227382610,9sleep122743-21sed23:48:401
120292520,3sleep3431rcuc/321:53:413
120292520,3sleep3431rcuc/321:53:413
15802994937,9cyclictest0-21swapper/000:03:240
15802994937,9cyclictest0-21swapper/000:03:240
15802994937,9cyclictest0-21swapper/000:03:240
71602430,3sleep30-21swapper/323:08:353
71602430,3sleep30-21swapper/323:08:353
71602430,3sleep30-21swapper/323:08:353
4982430,4chrt0-21swapper/300:18:293
4982430,4chrt0-21swapper/300:18:293
92712420,2sleep3431rcuc/323:13:373
92712420,2sleep3431rcuc/323:13:373
302382420,2sleep130239-21grep00:08:421
302382420,2sleep130239-21grep00:08:421
302382420,2sleep130239-21grep00:08:421
204522410,2sleep020233-21/usr/sbin/munin22:18:350
204522410,2sleep020233-21/usr/sbin/munin22:18:350
58542400,3sleep30-21swapper/323:03:403
58542400,3sleep30-21swapper/323:03:403
58542400,3sleep30-21swapper/323:03:403
232282380,3sleep20-21swapper/220:58:322
232282380,3sleep20-21swapper/220:58:322
229242370,3sleep30-21swapper/320:58:293
229242370,3sleep30-21swapper/320:58:293
206082370,3sleep10-21swapper/122:18:351
206082370,3sleep10-21swapper/122:18:351
188602360,2chrt18871-21latency_hist20:48:261
188602360,2chrt18871-21latency_hist20:48:261
188602360,2chrt18871-21latency_hist20:48:261
15803993630,4cyclictest28530-21tail21:13:281
94732350,2sleep19518-21sendmail00:43:161
94732350,2sleep19518-21sendmail00:43:161
15802993530,4cyclictest729-21dbus-daemon22:43:170
15802993530,4cyclictest729-21dbus-daemon22:43:170
15802993530,4cyclictest729-21dbus-daemon22:43:170
223602340,3sleep20-21swapper/220:58:162
223602340,3sleep20-21swapper/220:58:162
1580499341,23cyclictest27050-21chrt00:03:252
1580499341,23cyclictest27050-21chrt00:03:252
1580499341,23cyclictest27050-21chrt00:03:252
15803993427,5cyclictest7459-21latency_hist20:18:211
15803993427,5cyclictest7459-21latency_hist20:18:211
215112330,2sleep121515-21proc_pri20:53:371
215112330,2sleep121515-21proc_pri20:53:371
15803993328,4cyclictest23891-21kernelversion23:53:331
15803993328,4cyclictest23891-21kernelversion23:53:331
15803993327,4cyclictest8168-21latency_hist23:13:161
15803993327,4cyclictest8168-21latency_hist23:13:161
15803993327,4cyclictest8168-21latency_hist23:13:161
15803993326,5cyclictest4407-21latency_hist23:03:161
15803993326,5cyclictest4407-21latency_hist23:03:161
15803993326,5cyclictest0-21swapper/121:43:161
15803993326,5cyclictest0-21swapper/121:43:161
15803993325,6cyclictest27971-21latency_hist21:13:161
15803993227,4cyclictest9652-21needreboot21:48:341
15803993227,4cyclictest9652-21needreboot21:48:341
15803993225,5cyclictest24305-21latency_hist21:03:191
15803993225,5cyclictest24305-21latency_hist21:03:191
15802993223,7cyclictest31009-21fschecks_count00:13:300
15802993223,7cyclictest31009-21fschecks_count00:13:300
18682310,2chrt0-21swapper/020:03:230
18682310,2chrt0-21swapper/020:03:230
15803993125,4cyclictest550-21cron21:58:181
15803993125,4cyclictest550-21cron21:58:181
15803993124,5cyclictest26520-21needreboot22:33:351
15803993124,5cyclictest26520-21needreboot22:33:351
15803993124,5cyclictest25463-21fschecks_time23:58:311
15803993124,5cyclictest25463-21fschecks_time23:58:311
15803993124,5cyclictest25463-21fschecks_time23:58:311
15802993126,4cyclictest22558-21latency_hist20:58:270
15802993126,4cyclictest22558-21latency_hist20:58:270
15802993125,4cyclictest25981-21switchtime19:38:390
15802993125,4cyclictest25981-21switchtime19:38:390
15802993125,4cyclictest20021-21unixbench_multi20:48:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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