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2026-09-03 - 20:54
OSADL QA Farm

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 Thu Sep 03, 2026 12:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
148745999145134,8cyclictest1586569-21latency_hist12:15:000
148745999137126,8cyclictest1501963-21latency_hist07:55:010
148745999134121,9cyclictest1506803-21kworker/u8:0+flush-179:008:15:010
148746099132122,4cyclictest1584975-21kworker/u8:1+events_unbound12:10:211
148746099129123,5cyclictest1562243-21kworker/u8:2+events_unbound11:15:231
148746099128116,10cyclictest1213033-21systemd-journal12:25:001
148745999128120,5cyclictest1562243-21kworker/u8:2+events_unbound11:25:250
148745999128118,7cyclictest1506803-21kworker/u8:0+flush-179:008:15:210
148746099127122,4cyclictest1489173-21kworker/u8:0+events_unbound07:20:241
148746099126117,7cyclictest1552100-21kworker/u8:3+flush-179:011:10:011
148745999125114,8cyclictest1593184-21kworker/u8:1+events_unbound12:40:000
148745999125110,11cyclictest1213033-21systemd-journal08:20:230
148745999124116,5cyclictest1552100-21kworker/u8:3+flush-179:010:45:000
148746099123113,7cyclictest1593197-21latency_hist12:35:001
148745999122114,4cyclictest1580193-21kworker/u8:1+events_unbound11:55:130
148745999121115,4cyclictest1562243-21kworker/u8:2+flush-179:011:02:440
148745999121110,8cyclictest1506744-21latency_hist08:10:010
148746099120115,4cyclictest1484295-21kworker/u8:2+events_unbound07:10:261
148745999119108,8cyclictest1542786-21kworker/u8:0+events_unbound09:59:590
148745999118108,7cyclictest1546003-21latency_hist10:10:010
148745999118102,5cyclictest1500365-21kworker/u8:2+events_unbound08:35:170
148745999117110,4cyclictest1520803-21kworker/u8:1+flush-179:009:10:010
148745999117101,5cyclictest1539613-21kworker/u8:1+events_unbound09:50:010
148746099116110,4cyclictest1575493-21kworker/u8:3+events_unbound11:50:191
148745999116101,12cyclictest1496926-21apt-get07:39:590
148746099115106,6cyclictest1584984-21latency_hist12:10:001
148745999115106,6cyclictest1589488-21kworker/u8:0+flush-179:012:20:220
148745999115105,7cyclictest1484295-21kworker/u8:2+flush-179:007:10:120
148745999115104,8cyclictest1570647-21kworker/u8:1+flush-179:011:40:200
148746099114109,4cyclictest1575415-21kworker/u8:2+events_unbound11:45:241
148745999114103,7cyclictest1213033-21systemd-journal08:55:000
148746099113108,4cyclictest1552100-21kworker/u8:3+events_unbound10:25:231
148745999113103,6cyclictest1544396-21kworker/u8:1+flush-179:010:15:150
148745999112106,4cyclictest1589488-21kworker/u8:0+flush-179:012:25:220
148746099111107,3cyclictest1580193-21kworker/u8:1+events_unbound11:55:211
148746099111101,7cyclictest1575429-21latency_hist11:40:021
148745999111104,4cyclictest1539613-21kworker/u8:1+events_unbound09:50:170
148745999109101,5cyclictest1587489-21kworker/u8:2+events_unbound12:20:010
148746099108103,4cyclictest1562243-21kworker/u8:2+events_unbound11:25:231
148746099107100,5cyclictest1575415-21kworker/u8:2+events_unbound12:00:151
14874599910791,6cyclictest1527890-21kworker/u8:0+flush-179:009:35:140
148745999107102,3cyclictest1493701-21kworker/u8:1+events_unbound07:40:230
148746099106100,4cyclictest1562243-21kworker/u8:2+events_unbound11:00:251
14874599910692,11cyclictest1213033-21systemd-journal09:00:000
14874609910496,3cyclictest1520803-21kworker/u8:1+events_unbound09:00:181
14874609910397,4cyclictest1500365-21kworker/u8:2+events_unbound08:35:181
14874609910394,3cyclictest1500365-21kworker/u8:2+events_unbound08:10:201
14874599910397,4cyclictest1485818-21kworker/u8:3+flush-179:007:25:230
14874599910392,9cyclictest1572239-21kworker/u8:0+flush-179:011:30:230
14874599910294,6cyclictest1530640-21kworker/u8:1+events_unbound09:30:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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