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2026-06-20 - 23:39

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 Sat Jun 20, 2026 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
115579911216,27cyclictest4078-21munin-plugin-st11:58:390
1302521100,15sleep21156399cyclictest11:23:492
1155799994,28cyclictest0-21swapper/011:43:530
1155799975,28cyclictest0-21swapper/010:33:590
1155799965,26cyclictest0-21swapper/012:11:250
1155799955,23cyclictest23170-21ssh09:14:100
1155799955,23cyclictest23170-21ssh09:14:100
1155799954,28cyclictest0-21swapper/011:58:510
1155799954,28cyclictest0-21swapper/011:58:510
1155799944,27cyclictest0-21swapper/009:59:150
1155799944,27cyclictest0-21swapper/009:09:170
1155799935,27cyclictest0-21swapper/008:09:020
1155799934,28cyclictest0-21swapper/008:59:120
1155799934,28cyclictest0-21swapper/008:19:130
1155799934,28cyclictest0-21swapper/007:59:150
1155799934,27cyclictest0-21swapper/007:24:220
1155799924,27cyclictest0-21swapper/011:39:020
1155799924,27cyclictest0-21swapper/010:12:420
1155799924,27cyclictest0-21swapper/008:29:040
1155799924,27cyclictest0-21swapper/006:54:240
1155799924,24cyclictest0-21swapper/007:34:000
11557999215,24cyclictest1080-21lldpd09:22:530
11557999211,25cyclictest0-21swapper/010:04:000
11557999210,26cyclictest0-21swapper/010:39:480
1155799915,24cyclictest7647-21yum-updatesd-he10:28:080
1155799915,13cyclictest0-21swapper/008:54:460
1155799904,28cyclictest0-21swapper/007:14:190
11557999021,13cyclictest0-21swapper/008:49:190
1155799893,26cyclictest29662-21grep10:59:070
1155799884,27cyclictest0-21swapper/011:33:560
1155799874,29cyclictest0-21swapper/010:54:100
11557998735,11cyclictest30179-21df08:34:030
11557998735,11cyclictest30179-21df08:34:030
11557998721,13cyclictest0-21swapper/011:28:570
11557998633,9cyclictest4215-21tail09:34:040
1155799854,28cyclictest0-21swapper/010:19:100
1155799845,13cyclictest0-21swapper/011:11:040
1155799844,28cyclictest0-21swapper/009:39:150
1155799844,27cyclictest0-21swapper/011:49:010
1155799844,27cyclictest0-21swapper/009:29:070
11563997122,8cyclictest247932timerwakeupswit11:39:122
1156399654,53cyclictest0-21swapper/210:28:052
11561996513,44cyclictest0-21swapper/109:23:401
11561996128,27cyclictest0-21swapper/109:49:571
11563996018,36cyclictest3936-21irqstats11:09:052
1156199593,36cyclictest0-21swapper/109:24:211
244725810,40sleep20-21swapper/211:54:092
1156399584,47cyclictest0-21swapper/210:59:152
1156199587,28cyclictest0-21swapper/110:49:131
1156199585,35cyclictest0-21swapper/110:54:541
1156199583,25cyclictest0-21swapper/111:29:051
11561995817,20cyclictest27778-21netstat11:44:081
1155799586,30cyclictest22728-21irqstats10:49:050
38052573,46sleep20-21swapper/210:21:072
1156399577,12cyclictest0-21swapper/211:49:092
1156399573,46cyclictest9008-21ssh12:04:042
1156199579,30cyclictest0-21swapper/109:14:001
1156199579,30cyclictest0-21swapper/109:14:001
11561995731,9cyclictest13585-21ssh11:23:551
123442563,10sleep30-21swapper/311:22:183
123442563,10sleep30-21swapper/311:22:183
1156399565,44cyclictest0-21swapper/212:18:402
1156399564,46cyclictest0-21swapper/209:44:192
1156199569,26cyclictest0-21swapper/109:32:121
11561995610,39cyclictest32672-21gltestperf11:04:001
1156499558,41cyclictest0-21swapper/309:42:023
11564995528,12cyclictest0-21swapper/307:09:023
11564995517,27cyclictest0-21swapper/310:34:133
1156399556,42cyclictest0-21swapper/211:04:512
1156399554,44cyclictest0-21swapper/209:39:092
11563995534,12cyclictest0-21swapper/209:53:592
11563995534,12cyclictest0-21swapper/209:53:592
11563995521,28cyclictest1227-21runrttasks10:15:032
1156199554,32cyclictest0-21swapper/108:55:101
11561995538,10cyclictest9371-21cut07:49:141
11561995538,10cyclictest9371-21cut07:49:141
11561995512,26cyclictest12261-21gltestperf08:59:051
11561995511,26cyclictest2893-21fschecks_time08:44:051
287682542,10sleep30-21swapper/311:45:403
1156399549,22cyclictest0-21swapper/210:42:472
1156399545,41cyclictest0-21swapper/210:44:012
1156399543,45cyclictest0-21swapper/211:29:052
11563995415,33cyclictest26-21rcuc/212:00:142
11563995415,33cyclictest26-21rcuc/212:00:142
11563995411,8cyclictest26-21rcuc/210:34:132
1156199544,44cyclictest3985-21latency11:09:051
1156199544,31cyclictest0-21swapper/111:22:201
1156199544,31cyclictest0-21swapper/111:22:201
1156199544,30cyclictest0-21swapper/110:27:591
1156199543,39cyclictest0-21swapper/111:56:221
11561995422,26cyclictest11533-21munin-node10:34:081
11561995411,26cyclictest0-21swapper/109:37:321
11561995410,26cyclictest1124-21snmpd09:44:571
11557995436,11cyclictest4217-21head07:39:110
44402533,9sleep30-21swapper/310:23:253
27852533,10sleep20-21swapper/209:32:502
1156399538,38cyclictest0-21swapper/209:50:112
1156399535,42cyclictest0-21swapper/211:13:562
1156199539,25cyclictest0-21swapper/110:46:431
1156199538,28cyclictest0-21swapper/109:58:441
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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