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2026-07-27 - 20:54

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 Mon Jul 27, 2026 12:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1667521120,1sleep00-21swapper/011:23:340
1667521120,1sleep00-21swapper/011:23:340
796621040,2sleep30-21swapper/310:58:493
796621040,2sleep30-21swapper/310:58:493
1514521020,2chrt0-21swapper/008:23:530
1514521020,2chrt0-21swapper/008:23:530
1562621000,2sleep30-21swapper/311:18:513
1562621000,2sleep30-21swapper/311:18:513
274322880,2sleep30-21swapper/308:58:453
274322880,2sleep30-21swapper/308:58:453
106022840,3chrt0-21swapper/012:33:410
106022840,3chrt0-21swapper/012:33:410
322332830,2sleep00-21swapper/012:03:460
267842730,1chrt26781-21ntpq07:28:511
267842730,1chrt26781-21ntpq07:28:511
201252700,4sleep30-21swapper/310:03:543
201252700,4sleep30-21swapper/310:03:543
81402580,3sleep08141-21head12:23:560
81402580,3sleep08141-21head12:23:560
133952560,3sleep30-21swapper/312:38:563
133952560,3sleep30-21swapper/312:38:563
133952560,3sleep30-21swapper/312:38:563
104812540,2chrt0-21swapper/212:33:352
104812540,2chrt0-21swapper/212:33:352
108762530,2sleep010874-21tune2fs12:33:450
108762530,2sleep010874-21tune2fs12:33:450
115162510,3chrt0-21swapper/311:08:463
115162510,3chrt0-21swapper/311:08:463
20622500,3chrt0-21swapper/310:43:453
20622500,3chrt0-21swapper/310:43:453
162882500,3sleep20-21swapper/208:28:452
162882500,3sleep20-21swapper/208:28:452
143682490,4chrt0-21swapper/311:13:563
143682490,4chrt0-21swapper/311:13:563
9582480,2chrt0-21swapper/309:13:493
9582480,2chrt0-21swapper/309:13:493
67122480,2chrt0-21swapper/308:03:423
67122480,2chrt0-21swapper/308:03:423
246822480,3sleep20-21swapper/210:18:322
246822480,3sleep20-21swapper/210:18:322
216272470,4chrt0-21swapper/210:08:472
216272470,4chrt0-21swapper/210:08:472
208992470,3chrt0-21swapper/208:38:542
208992470,3chrt0-21swapper/208:38:542
324722460,3chrt0-21swapper/312:03:493
236992440,3sleep30-21swapper/310:13:513
236992440,3sleep30-21swapper/310:13:513
242682430,3sleep30-21swapper/308:48:523
242682430,3sleep30-21swapper/308:48:523
217182430,3sleep30-21swapper/310:08:493
217182430,3sleep30-21swapper/310:08:493
11882430,3sleep20-21swapper/209:13:522
11882430,3sleep20-21swapper/209:13:522
235792410,2sleep30-21swapper/308:48:403
185652410,3sleep20-21swapper/208:33:482
185652410,3sleep20-21swapper/208:33:482
52852400,3chrt0-21swapper/207:58:462
52852400,3chrt0-21swapper/207:58:462
52852400,3chrt0-21swapper/207:58:462
73912380,2chrt0-21swapper/208:03:492
73912380,2chrt0-21swapper/208:03:492
20717993728,7cyclictest23602-21/usr/sbin/munin08:48:490
20717993728,7cyclictest23602-21/usr/sbin/munin08:48:490
20717993727,8cyclictest27448-21unixbench_singl11:48:560
20717993727,8cyclictest27448-21unixbench_singl11:48:560
325962360,4sleep032594-21sensors_temp07:43:530
325962360,4sleep032594-21sensors_temp07:43:530
20723993626,7cyclictest4703-21threads10:48:541
20723993626,7cyclictest4703-21threads10:48:541
2072999341,2cyclictest0-21swapper/212:40:012
2072999341,2cyclictest0-21swapper/212:40:012
2072999341,2cyclictest0-21swapper/212:40:012
20717993424,8cyclictest28408-21kernelversion07:33:480
2072999331,2cyclictest0-21swapper/212:34:002
2072999331,2cyclictest0-21swapper/212:34:002
20723993327,4cyclictest10239-21gltestperf09:38:451
20723993327,4cyclictest10239-21gltestperf09:38:451
20723993322,8cyclictest16040-21kernelversion09:53:451
2072999321,1cyclictest0-21swapper/211:59:592
2072999321,1cyclictest0-21swapper/211:59:592
2072999321,1cyclictest0-21swapper/211:59:592
20723993225,5cyclictest24358-21sh08:48:541
20723993225,5cyclictest24358-21sh08:48:541
20723993225,4cyclictest0-21swapper/110:28:321
20723993225,4cyclictest0-21swapper/110:28:321
20723993224,6cyclictest16991-21sendmail_mailqu08:28:541
20723993224,6cyclictest16991-21sendmail_mailqu08:28:541
2071799323,3cyclictest171ktimers/010:05:260
2071799323,3cyclictest171ktimers/010:05:260
20717993227,3cyclictest171ktimers/010:23:270
20717993227,3cyclictest171ktimers/010:23:270
20717993226,4cyclictest8593-21/usr/sbin/munin08:08:540
20717993226,4cyclictest8593-21/usr/sbin/munin08:08:540
20717993225,5cyclictest18613-21latency_hist11:28:370
20717993225,5cyclictest18613-21latency_hist11:28:370
20717993224,6cyclictest8749-21tr09:33:520
20717993224,6cyclictest8749-21tr09:33:520
20717993224,6cyclictest18236-21fschecks_time08:33:450
20717993224,6cyclictest18236-21fschecks_time08:33:450
248222310,2sleep024820-21irqstats11:43:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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