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2026-06-30 - 22:12
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OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #e, 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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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 50 highest latencies:
System rackeslot6.osadl.org (updated Tue Jun 30, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
142690899127113,10cyclictest1495518-21kworker/u8:1+flush-179:010:45:010
142690999122111,9cyclictest1213033-21systemd-journal08:10:011
142690899120109,8cyclictest1436679-21/usr/sbin/munin07:40:240
142690899118109,6cyclictest1459266-21kworker/u8:3+flush-179:009:00:020
142690899117100,6cyclictest1459266-21kworker/u8:3+flush-179:009:20:010
142690899115108,4cyclictest1482824-21kworker/u8:0+events_unbound10:05:010
142690999111101,7cyclictest1438028-21latency_hist07:45:011
142690899111106,4cyclictest1497923-21kworker/u8:0+flush-179:011:35:000
142690899110102,6cyclictest1483410-21kworker/u8:2+events_unbound10:25:000
14269089910899,6cyclictest1423818-21kworker/u8:3+flush-179:007:34:590
142690999107100,5cyclictest1509090-21latency_hist11:25:011
14269089910796,7cyclictest1472458-21kworker/u8:3+flush-179:009:35:200
14269089910598,5cyclictest1483410-21kworker/u8:2+events_unbound10:10:010
14269089910591,8cyclictest1483410-21kworker/u8:2+flush-179:010:15:210
14269089910587,7cyclictest1433148-21kworker/u8:2+events_unbound07:45:140
14269089910193,5cyclictest1486535-21latency_hist10:15:000
14269089910192,6cyclictest1451255-21kworker/u8:2+flush-179:008:45:010
1426908999991,5cyclictest1497923-21kworker/u8:0+events_unbound11:00:250
1426908999990,6cyclictest1513919-21kworker/u8:3+flush-179:011:50:210
1426908999892,5cyclictest1439596-21kworker/u8:0+flush-179:008:20:000
1426909999788,6cyclictest1455792-21latency_hist08:40:021
1426908999684,8cyclictest1451255-21kworker/u8:2+events_unbound09:35:000
1426909999483,9cyclictest1213033-21systemd-journal11:15:001
1426908999485,6cyclictest1504307-21latency_hist11:10:010
1426908999387,3cyclictest1439596-21kworker/u8:0+flush-179:008:10:220
1426908999383,7cyclictest1526590-21latency_hist12:20:010
1426908999383,7cyclictest1495518-21kworker/u8:1+flush-179:011:00:000
1426908999382,8cyclictest1499510-21kworker/u8:2+events_unbound10:55:010
1426909999284,5cyclictest1477001-21latency_hist09:45:011
1426908999285,5cyclictest1483410-21kworker/u8:2+events_unbound10:30:260
1426908999283,7cyclictest1423818-21kworker/u8:3+flush-179:007:20:260
1426908999276,6cyclictest1524969-21kworker/u8:0+events_unbound12:25:240
1426909999182,6cyclictest1478585-21latency_hist09:50:001
1426908998981,5cyclictest1528170-21kworker/u8:2+flush-179:012:35:000
1426908998779,5cyclictest1451255-21kworker/u8:2+events_unbound08:30:230
1426909998680,5cyclictest1497923-21kworker/u8:0+flush-179:011:05:251
1426909998675,9cyclictest1488404-21apt-get10:20:111
1426909998675,8cyclictest1441741-21diskstats07:55:141
1426908998679,5cyclictest1463445-21kworker/u8:0+events_unbound09:00:270
1426908998678,6cyclictest1436348-21gzip07:36:000
1426908998578,5cyclictest1504342-21kworker/u8:2+events_unbound11:20:010
1426908998478,4cyclictest1451255-21kworker/u8:2+flush-179:008:50:210
1426908998477,5cyclictest1513832-21kworker/u8:2+flush-179:012:05:200
1426908998477,5cyclictest1513832-21kworker/u8:2+flush-179:012:05:200
1426908998477,5cyclictest1513832-21kworker/u8:2+flush-179:011:50:000
1426908998477,4cyclictest1508544-21kworker/u8:1+flush-179:011:25:220
1426908998475,6cyclictest1475451-21kworker/u8:1+events_unbound09:40:160
1426908998474,7cyclictest1512243-21kworker/u8:1+flush-179:011:40:160
1426908998474,7cyclictest1451255-21kworker/u8:2+flush-179:009:10:260
1426909998374,6cyclictest1439612-21latency_hist07:50:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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