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2026-07-24 - 23:46

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #4

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.
Unexpectedly long latencies may be caused by SMIs
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 rack7slot4s.osadl.org (updated Fri Jul 24, 2026 12:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1838699685,48cyclictest6753-21ssh10:05:120
1840499651,53cyclictest31834-21ssh09:25:122
1838699584,45cyclictest14217-21ssh12:15:120
1840499550,50cyclictest930-21snmpd07:40:142
1839499424,34cyclictest4537-21ssh09:10:131
1839499412,34cyclictest25064-21ssh11:45:141
1841299391,23cyclictest35966irq/58-eth012:35:143
1839499393,31cyclictest30168-21ssh10:00:151
1839499362,31cyclictest12414-21ssh11:20:131
1839499362,30cyclictest24860-21ssh10:15:121
1841299352,23cyclictest35966irq/58-eth009:40:143
18386993511,19cyclictest12-21ksoftirqd/011:05:120
1841299345,17cyclictest35966irq/58-eth010:05:123
18412993412,13cyclictest35966irq/58-eth011:35:113
1841299341,17cyclictest35966irq/58-eth011:55:143
1838699343,26cyclictest10442-21apt-get10:25:120
1838699343,24cyclictest26770-21ssh11:10:130
18404993324,6cyclictest877-21lldpd07:25:132
1839499333,24cyclictest10454-21ssh10:25:131
1839499333,19cyclictest21-21ksoftirqd/109:05:111
1839499332,25cyclictest19648-21ssh12:00:151
1839499326,20cyclictest7023-21ssh11:35:121
1839499313,24cyclictest8997-21ssh12:30:131
18394993125,3cyclictest0-21swapper/111:50:141
1838699313,21cyclictest31843-21ssh09:25:130
1839499305,22cyclictest21405-21ssh11:25:131
18386993020,3cyclictest0-21swapper/010:45:110
1840499296,13cyclictest261rcuc/209:55:162
1840499294,18cyclictest8430-21ssh09:30:132
1840499294,18cyclictest8430-21ssh09:30:122
18394992821,3cyclictest21-21ksoftirqd/110:35:121
18394992821,3cyclictest21-21ksoftirqd/110:35:111
1838699282,14cyclictest5218-21ssh12:10:150
1839499272,20cyclictest8732-21ssh10:40:241
1840499262,20cyclictest0-21swapper/208:55:162
18404992615,9cyclictest27-21ksoftirqd/211:40:122
1840499261,20cyclictest930-21snmpd12:10:152
1839499266,12cyclictest0-21swapper/108:45:121
1839499262,15cyclictest18375-21cyclictest08:35:121
1839499261,19cyclictest2979-21rm09:45:131
1838699262,18cyclictest15805-21ssh10:10:130
1838699261,20cyclictest1472-21ssh10:20:140
18412992512,9cyclictest35966irq/58-eth009:50:143
1840499252,7cyclictest3171-21fschecks_time09:45:152
18404992514,8cyclictest0-21swapper/211:00:122
1840499251,16cyclictest4541-21ssh09:10:132
1839499258,11cyclictest17862-1kworker/u9:110:55:151
1839499255,17cyclictest19455-21ssh10:30:141
1839499255,17cyclictest19455-21ssh10:30:131
1839499251,21cyclictest13568-21ssh09:15:121
1838699251,21cyclictest23087-21ssh10:50:130
1841299241,11cyclictest35966irq/58-eth008:40:143
1840499243,10cyclictest0-21swapper/210:15:112
1840499241,17cyclictest27346irq/40-dwc2_hso12:35:132
18404992411,5cyclictest22825-21ssh11:05:472
1840499241,13cyclictest27346irq/40-dwc2_hso09:20:142
18404992410,11cyclictest0-21swapper/207:10:162
18394992412,8cyclictest21-21ksoftirqd/109:20:131
1839499241,18cyclictest32359-21ssh12:25:151
18394992411,10cyclictest25686-21cron08:25:021
18394992410,9cyclictest21-21ksoftirqd/108:05:131
18386992412,9cyclictest1481-21cron08:00:010
1840499239,11cyclictest16534-21kthreadcore10:10:202
1840499235,8cyclictest2846-21cron08:35:012
1840499234,4cyclictest0-21swapper/209:20:012
1840499231,8cyclictest3264266ssh10:55:192
18404992312,7cyclictest0-21swapper/207:20:292
18404992311,5cyclictest3249-21ssh12:08:072
18404992311,5cyclictest2442-21ssh10:37:232
18404992311,5cyclictest2442-21ssh10:37:222
18404992311,4cyclictest0-21swapper/208:00:162
1840499231,12cyclictest25065-21sh11:45:152
18404992310,10cyclictest10042-21ssh11:17:422
1840499230,13cyclictest0-21swapper/211:10:142
1839499232,14cyclictest630-21Async09:36:311
1839499231,16cyclictest12400-21ssh11:00:271
1838699232,6cyclictest15420-21kthreadcore09:50:230
1838699231,13cyclictest23384-21diskmemload12:20:140
1841299222,13cyclictest35966irq/58-eth011:10:133
1840499229,10cyclictest32089-21kworker/u8:111:25:142
1840499228,4cyclictest6329-21kthreadcore10:40:202
1840499226,12cyclictest0-21swapper/209:50:242
1840499222,16cyclictest0-21swapper/212:30:132
18404992212,8cyclictest0-21swapper/208:15:152
18404992211,9cyclictest15365-21ssh10:25:362
18404992211,8cyclictest0-21swapper/209:35:132
1840499221,12cyclictest14233-21sh12:15:132
18404992210,9cyclictest3549-21grep12:25:262
1840499220,12cyclictest1881-21ls11:50:172
1839499222,16cyclictest16056-21sh10:45:201
1838699223,9cyclictest17990-21ssh12:35:120
18386992212,7cyclictest13299-21cat12:30:300
1841299212,12cyclictest35966irq/58-eth009:30:113
1841299212,12cyclictest35966irq/58-eth009:30:113
18412992111,8cyclictest0-21swapper/312:15:213
1840499211,9cyclictest17382-21kthreadcore10:45:212
1840499211,9cyclictest14877-21wc08:10:272
18404992113,5cyclictest0-21swapper/212:20:162
1840499211,17cyclictest20218-21kthreadcore10:30:202
1840499211,17cyclictest20218-21kthreadcore10:30:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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