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2026-07-25 - 02:45

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 Sat Jul 25, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1650821440,3sleep20-21swapper/220:16:202
1650821440,3sleep20-21swapper/220:16:202
904721140,3chrt0-21swapper/321:23:423
904721140,3chrt0-21swapper/321:23:423
904721140,3chrt0-21swapper/321:23:423
1879121120,2sleep118794-21sed21:48:451
1879121120,2sleep118794-21sed21:48:451
1879121120,2sleep118794-21sed21:48:451
272042900,4sleep30-21swapper/320:43:513
272042900,4sleep30-21swapper/320:43:513
169652740,6sleep116969-21unixbench-2d23:08:531
169652740,6sleep116969-21unixbench-2d23:08:531
169652740,6sleep116969-21unixbench-2d23:08:531
169652740,6sleep116969-21unixbench-2d23:08:531
235092730,2chrt23512-21switchtime20:33:521
209882650,3chrt0-21swapper/123:20:551
209882650,3chrt0-21swapper/123:20:551
209882650,3chrt0-21swapper/123:20:551
84442640,1chrt0-21swapper/100:13:491
84442640,1chrt0-21swapper/100:13:491
36492610,3sleep30-21swapper/321:08:433
36492610,3sleep30-21swapper/321:08:433
35642610,3sleep125387-21cyclictest22:33:511
35642610,3sleep125387-21cyclictest22:33:511
18682610,2sleep10-21swapper/119:38:401
18682610,2sleep10-21swapper/119:38:401
246602560,2chrt0-21swapper/220:38:432
39332540,2sleep30-21swapper/319:43:413
39332540,2sleep30-21swapper/319:43:413
39332540,2sleep30-21swapper/319:43:413
34772530,1sleep03563-21/usr/sbin/munin22:33:510
34772530,1sleep03563-21/usr/sbin/munin22:33:510
37962510,5sleep13795-40mandb00:03:321
37962510,5sleep13795-40mandb00:03:321
37962510,5sleep13795-40mandb00:03:321
241992510,3sleep20-21swapper/220:38:322
19892490,3sleep30-21swapper/321:03:493
19892490,3sleep30-21swapper/321:03:493
177082490,3chrt0-21swapper/323:13:413
177082490,3chrt0-21swapper/323:13:413
177082490,3chrt0-21swapper/323:13:413
177082490,3chrt0-21swapper/323:13:413
114432460,3sleep30-21swapper/321:28:493
114432460,3sleep30-21swapper/321:28:493
25401994538,3cyclictest0-21swapper/000:03:530
25401994538,3cyclictest0-21swapper/000:03:530
25401994538,3cyclictest0-21swapper/000:03:530
64772440,2sleep30-21swapper/322:43:423
64772440,2sleep30-21swapper/322:43:423
64772440,2sleep30-21swapper/322:43:423
298972430,2sleep30-21swapper/320:53:353
2541099403,26cyclictest3874-21chrt00:03:383
2541099403,26cyclictest3874-21chrt00:03:383
2541099403,26cyclictest3874-21chrt00:03:383
25405993913,19cyclictest5033-21cat00:03:551
25405993913,19cyclictest5033-21cat00:03:551
25405993913,19cyclictest5033-21cat00:03:551
255532380,3chrt0-21swapper/123:33:451
255532380,3chrt0-21swapper/123:33:451
25405993731,4cyclictest572-21cups-browsed23:13:511
25405993731,4cyclictest572-21cups-browsed23:13:511
25405993731,4cyclictest572-21cups-browsed23:13:511
47782360,2sleep14964-21grep19:43:521
47782360,2sleep14964-21grep19:43:521
47782360,2sleep14964-21grep19:43:521
310362360,3chrt0-21swapper/319:28:453
310362360,3chrt0-21swapper/319:28:453
310362360,3chrt0-21swapper/319:28:453
25405993627,7cyclictest16848-21kernelversion21:43:451
25405993627,7cyclictest16848-21kernelversion21:43:451
25405993627,7cyclictest16848-21kernelversion21:43:451
25405993627,7cyclictest16848-21kernelversion21:43:451
25401993528,5cyclictest3884-21netstat21:08:470
25401993528,5cyclictest3884-21netstat21:08:470
242992350,3sleep30-21swapper/320:38:373
25405993425,7cyclictest2710-21fschecks_count22:33:421
25405993425,7cyclictest2710-21fschecks_count22:33:421
100952340,2chrt10094-21irqstats00:18:441
100952340,2chrt10094-21irqstats00:18:441
100952340,2chrt10094-21irqstats00:18:441
63232330,3sleep30-21swapper/319:48:473
63232330,3sleep30-21swapper/319:48:473
25405993327,3cyclictest14032-21kworker/u9:2-rpciod22:03:431
25405993324,7cyclictest23222-21/usr/sbin/munin23:28:481
25405993324,7cyclictest23222-21/usr/sbin/munin23:28:481
25405993323,8cyclictest28891-21fschecks_count19:23:411
25405993323,8cyclictest28891-21fschecks_count19:23:411
25401993326,5cyclictest29207-21latency_hist22:18:300
25401993326,5cyclictest29207-21latency_hist22:18:300
25401993326,5cyclictest27339-21latency_hist22:13:300
25401993326,5cyclictest27339-21latency_hist22:13:300
25401993324,7cyclictest2782-21netstat23:58:480
25401993324,7cyclictest2782-21netstat23:58:480
25401993324,7cyclictest2782-21netstat23:58:480
25401993224,6cyclictest1525-21fschecks_time21:03:450
25401993224,6cyclictest1525-21fschecks_time21:03:450
25405993125,5cyclictest14678-21systemd-journal22:45:581
25405993125,5cyclictest14678-21systemd-journal22:45:581
25405993125,5cyclictest14678-21systemd-journal22:45:581
25405993125,4cyclictest25387-21cyclictest21:38:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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