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2026-09-24 - 03:04
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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 Wed Sep 23, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
132583899139113,16cyclictest1385652-21/usr/sbin/munin10:15:220
132584099129123,4cyclictest1400568-21kworker/u8:3+flush-179:011:25:211
132584099127121,4cyclictest1400568-21kworker/u8:3+flush-179:011:10:221
132584099126116,7cyclictest1366060-21latency_hist09:15:011
132584099126116,7cyclictest1366060-21latency_hist09:15:001
132583899123117,4cyclictest1366045-21kworker/u8:2+flush-179:009:20:010
132584099121114,5cyclictest1382222-21kworker/u8:1+events_unbound10:05:191
132584099121111,8cyclictest1362866-21kworker/u8:1+flush-179:009:05:261
132584099120115,4cyclictest1331553-21kworker/u8:0+events_unbound07:40:241
132584099118114,3cyclictest1366045-21kworker/u8:2+events_unbound09:20:251
132584099118113,4cyclictest1344844-21kworker/u8:0+flush-179:008:15:221
132584099118109,7cyclictest1346443-21latency_hist08:15:011
132584099118107,8cyclictest1361255-21kworker/u8:0+flush-179:009:00:161
132584099117112,4cyclictest1321234-21kworker/u8:1+flush-179:007:50:221
132584099117111,5cyclictest1385458-21kworker/u8:2+flush-179:010:30:301
132584099114102,11cyclictest1400568-21kworker/u8:3+flush-179:011:30:291
132583899114106,6cyclictest1359695-21latency_hist08:55:010
132584099113106,5cyclictest686880-21kworker/u8:5+flush-179:007:10:211
132584099113106,5cyclictest686880-21kworker/u8:5+flush-179:007:10:211
132584099113106,5cyclictest1421452-21kworker/u8:0+flush-179:012:05:191
132584099111105,4cyclictest1321234-21kworker/u8:1+events_unbound07:20:141
132584099111102,7cyclictest1412154-21/usr/sbin/munin11:35:241
132583899111101,7cyclictest1415088-21kworker/u8:2+flush-179:011:45:260
13258409911092,16cyclictest1415088-21kworker/u8:2+flush-179:011:50:001
13258409910995,11cyclictest1388621-21apt-get10:25:011
132584099109105,3cyclictest1321234-21kworker/u8:1+events_unbound08:25:231
132584099107102,3cyclictest1400568-21kworker/u8:3+events_unbound11:50:191
13258409910699,4cyclictest1416717-21kworker/u8:1+events_unbound12:00:231
13258409910696,7cyclictest1427843-21latency_hist12:25:011
13258409910696,7cyclictest1387016-21latency_hist10:20:021
132584099106101,4cyclictest1374003-21kworker/u8:0+flush-179:009:45:251
13258389910699,5cyclictest1374003-21kworker/u8:0+flush-179:009:45:200
13258389910698,5cyclictest1331553-21kworker/u8:0+flush-179:007:35:170
132584099105100,4cyclictest1395730-21kworker/u8:0+events_unbound10:55:241
13258389910599,4cyclictest1353052-21kworker/u8:0+flush-179:008:45:230
13258409910499,4cyclictest1421452-21kworker/u8:0+events_unbound12:10:181
13258409910499,4cyclictest1374003-21kworker/u8:0+events_unbound10:00:251
132584099104100,3cyclictest1321234-21kworker/u8:1+events_unbound08:30:281
13258409910297,4cyclictest1385458-21kworker/u8:2+events_unbound10:25:141
13258409910292,7cyclictest1374037-21latency_hist09:40:001
13258389910295,5cyclictest1427875-21true12:25:010
13258409910196,4cyclictest1430354-21kworker/u8:1+events_unbound12:30:301
13258409910187,11cyclictest1213033-21systemd-journal09:30:011
13258409910092,5cyclictest1353116-21kworker/u8:3+flush-179:009:20:001
13258409910090,4cyclictest1385458-21kworker/u8:2+events_unbound10:40:191
13258389910095,3cyclictest1385458-21kworker/u8:2+flush-179:010:25:230
13258389910093,5cyclictest1385458-21kworker/u8:2+events_unbound10:40:010
13258389910091,6cyclictest1427878-21kworker/u8:0+flush-179:012:30:030
1325840999994,4cyclictest1321234-21kworker/u8:1+flush-179:008:05:291
1325840999988,8cyclictest1407413-21apt-get11:20:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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