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2025-12-19 - 07:15
OSADL QA Farm

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #b, 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.
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
Characteristics of the 50 highest latencies:
System rackbslot1.osadl.org (updated Thu Dec 18, 2025 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
14008682214159,13sleep20-21swapper/207:07:462
14009992210159,41sleep10-21swapper/107:09:221
14008452209173,10sleep00-21swapper/007:07:280
14009912177153,14sleep30-21swapper/307:09:163
1401268996258,3cyclictest1479123-21kworker/u8:3+flush-179:009:50:150
1401275996150,10cyclictest1701282-21kworker/u8:1+events_unbound12:10:141
1401268996158,2cyclictest1300200-21kworker/u8:2+flush-179:008:40:100
1401282995955,3cyclictest1546639-21kworker/u8:2+flush-179:009:45:123
1401282995853,4cyclictest1618923-21kworker/u8:0+flush-179:011:00:343
1401282995752,4cyclictest1577567-21kworker/u8:1+flush-179:010:10:003
1401268995740,15cyclictest1516365-21/usr/share/muni09:00:030
1401282995649,5cyclictest1443920-21/usr/share/muni07:50:103
1401275995652,3cyclictest1479123-21kworker/u8:3+flush-179:009:05:301
1401268995652,3cyclictest1649973-21kworker/u8:2+events_unbound11:15:170
1401278995536,18cyclictest1438702-26chrome07:45:022
1401275995552,2cyclictest1432954-21kworker/u8:0+flush-179:007:40:161
1401275995549,4cyclictest1600234-21apt-get10:20:141
1401268995551,3cyclictest1349322-21kworker/u8:1+flush-179:007:25:150
1401268995539,15cyclictest1685888-21kworker/u8:0+flush-179:011:45:180
1401278995450,3cyclictest1675624-21munin-update11:35:352
1401275995451,2cyclictest1577567-21kworker/u8:1+events_unbound11:10:271
1401275995450,3cyclictest1411964-21kworker/u8:3+events_unbound07:35:091
1401275995350,2cyclictest1721904-21kworker/u8:1+events_unbound12:35:321
1401275995350,2cyclictest1567562-21kworker/u8:0+events_unbound09:50:101
1401275995350,2cyclictest1300200-21kworker/u8:2+events_unbound08:37:521
1401275995349,3cyclictest1479126-21kworker/u8:5+events_unbound09:25:101
1401282995247,3cyclictest1521597-21/usr/share/muni09:05:163
1401278995246,4cyclictest1686153-21CacheThread_Blo11:45:012
1401275995248,3cyclictest1400929-21kworker/u8:0+flush-179:007:15:271
1401268995249,2cyclictest1567657-21kworker/u8:4+flush-179:009:55:270
1401268995248,3cyclictest1654815-21kworker/u8:3+flush-179:011:30:130
1401278995129,21cyclictest1690790-21kworker/u8:2+flush-179:012:10:302
1401275995147,3cyclictest1577567-21kworker/u8:1+flush-179:010:15:281
1401275995145,2cyclictest1443436-21kworker/u8:3+flush-179:007:56:531
1401268995148,2cyclictest1479126-21kworker/u8:5+events_unbound08:50:260
1401268995148,2cyclictest1300200-21kworker/u8:2+flush-179:008:35:210
1401268995146,4cyclictest1469145-21kworker/u8:0+events_unbound08:15:140
1401282995045,3cyclictest1593244-21kworker/u8:3+flush-179:010:14:453
1401275995047,2cyclictest1567657-21kworker/u8:4+flush-179:010:05:511
1401275995047,2cyclictest1567562-21kworker/u8:0+events_unbound09:55:301
1401275995042,7cyclictest1577567-21kworker/u8:1+flush-179:010:50:221
1401268995047,2cyclictest1526153-21kworker/u8:0+flush-179:009:31:200
1401268995047,2cyclictest1526153-21kworker/u8:0+flush-179:009:31:200
1401282994944,4cyclictest3125725-21ThreadPoolForeg08:25:153
1401275994946,2cyclictest1300200-21kworker/u8:2+flush-179:007:20:361
1401268994946,2cyclictest1716797-21kworker/u8:3+events_unbound12:13:530
1401268994946,2cyclictest1618923-21kworker/u8:0+flush-179:011:00:230
1401268994945,3cyclictest1479126-21kworker/u8:5+flush-179:009:10:150
1401282994844,3cyclictest1300200-21kworker/u8:2+flush-179:008:40:213
1401282994843,3cyclictest1567562-21kworker/u8:0+flush-179:010:20:233
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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