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2026-07-29 - 05:41

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #6

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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  Intel
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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack1slot6s.osadl.org (updated Wed Jul 29, 2026 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1452599984,67cyclictest0-21swapper/021:18:090
1452599984,67cyclictest0-21swapper/021:18:090
1452599965,84cyclictest2697-21cpuspeed_turbos21:42:450
1452599964,86cyclictest0-21swapper/021:57:430
1452599964,86cyclictest0-21swapper/021:57:430
1452599964,85cyclictest0-21swapper/023:37:220
1452599954,85cyclictest0-21swapper/023:12:420
1452599954,84cyclictest0-21swapper/023:37:530
1452599953,85cyclictest0-21swapper/023:27:520
1452599945,81cyclictest0-21swapper/021:40:380
1452599945,71cyclictest0-21swapper/022:52:470
1452599944,84cyclictest0-21swapper/022:26:250
1452599944,83cyclictest0-21swapper/019:22:480
14529999335,51cyclictest9829-21taskset21:52:501
14529999329,57cyclictest16386-21cpuspeed_turbos22:52:441
1452599935,81cyclictest0-21swapper/022:02:520
1452599935,50cyclictest0-21swapper/022:28:250
1452599934,83cyclictest0-21swapper/020:18:080
1452599934,82cyclictest0-21swapper/023:11:440
1452599925,81cyclictest1227-21runrttasks20:48:030
1452599924,68cyclictest0-21swapper/020:12:500
1452599916,68cyclictest0-21swapper/022:15:020
1452599915,66cyclictest0-21swapper/018:17:520
1452599915,52cyclictest1166-21munin-node23:17:530
1452599915,52cyclictest1166-21munin-node23:17:530
1452599914,80cyclictest0-21swapper/021:05:570
1452599914,71cyclictest0-21swapper/021:34:580
1452599914,68cyclictest28376-21gltestperf20:42:530
1452599913,81cyclictest0-21swapper/022:37:450
1452599906,50cyclictest10834-21yum-updatesd-he21:53:140
1452599904,79cyclictest0-21swapper/022:42:590
1452599904,79cyclictest0-21swapper/022:42:590
1452599904,68cyclictest0-21swapper/023:24:570
1452599904,66cyclictest0-21swapper/021:23:000
1452599895,77cyclictest0-21swapper/021:47:440
1452599894,78cyclictest0-21swapper/022:18:430
1452599894,78cyclictest0-21swapper/020:27:460
1452599894,69cyclictest0-21swapper/022:33:270
1452599894,61cyclictest0-21swapper/020:54:370
1452599893,79cyclictest14186-21processes22:48:000
14529998827,52cyclictest10681-21ssh21:04:531
1452599889,50cyclictest0-21swapper/020:25:580
1452599884,56cyclictest0-21swapper/021:08:030
1452599884,54cyclictest0-21swapper/018:58:500
1452599883,69cyclictest0-21swapper/022:07:440
14529998734,29cyclictest5473-21latency_hist21:47:311
1452599875,67cyclictest0-21swapper/023:01:210
1452599874,57cyclictest0-21swapper/020:35:000
1452599874,50cyclictest0-21swapper/020:41:440
1452599874,50cyclictest0-21swapper/020:41:440
1452599873,77cyclictest0-21swapper/021:13:070
1452599873,64cyclictest25535-21fschecks_time21:27:480
1452599873,52cyclictest107550irq/46-eth023:03:040
14529998632,47cyclictest29174-21cut18:42:501
1452599864,51cyclictest0-21swapper/018:12:540
1452599863,61cyclictest0-21swapper/021:01:300
1452599862,78cyclictest0-21swapper/019:52:090
14529998535,43cyclictest15166-21unixbench_singl23:38:001
1452599845,58cyclictest0-21swapper/020:09:280
1452599844,59cyclictest0-21swapper/019:28:080
1452599834,73cyclictest0-21swapper/018:32:510
1452599834,73cyclictest0-21swapper/018:32:510
1452599834,49cyclictest0-21swapper/018:38:090
14529998234,41cyclictest16741-21unixbench_singl21:13:061
1452599824,71cyclictest0-21swapper/019:57:510
14529998134,41cyclictest1227-21runrttasks20:45:011
1452599814,70cyclictest0-21swapper/019:02:550
219499800,4rtkit-daemon2193-21rtkit-daemon21:02:533
1452599804,70cyclictest0-21swapper/019:08:440
1452599804,69cyclictest0-21swapper/019:17:500
1452599804,69cyclictest0-21swapper/018:43:110
1452599804,51cyclictest107550irq/46-eth019:53:210
14525998038,34cyclictest2107-21cut18:52:560
14529997929,43cyclictest12650-21munin-node21:57:471
14529997929,43cyclictest12650-21munin-node21:57:471
1452599794,69cyclictest0-21swapper/019:37:510
14529997831,39cyclictest28563-21fschecks_time19:47:551
14529997830,41cyclictest23232-21diskstats23:02:451
14529997824,47cyclictest0-21swapper/120:02:351
1452599784,57cyclictest0-21swapper/018:29:110
14525997835,37cyclictest754-21unixbench_singl18:48:140
14529997737,34cyclictest1227-21runrttasks20:18:491
14529997732,27cyclictest1227-21runrttasks23:23:471
14529997730,40cyclictest28307-21sort21:32:451
1452599775,66cyclictest0-21swapper/019:17:370
1452599775,66cyclictest0-21swapper/019:17:370
1452599774,67cyclictest0-21swapper/019:37:360
1452599774,66cyclictest0-21swapper/020:07:360
14529997631,39cyclictest7274-21diskmemload22:38:021
14529997629,31cyclictest3516-21entropy22:32:471
14529997628,41cyclictest147421ssh22:48:261
14529997627,42cyclictest0-21swapper/122:13:431
14529997625,11cyclictest11384-21awk19:12:511
14529997625,11cyclictest11384-21awk19:12:511
14529997623,46cyclictest0-21swapper/120:55:071
14529997529,38cyclictest20902-21ssh22:09:021
14529997528,41cyclictest31677-21cpuspeed_turbos21:37:441
14529997528,40cyclictest15094-21munin-node20:22:551
14529997524,15cyclictest0-21swapper/121:48:491
14529997522,47cyclictest0-21swapper/123:12:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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