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2025-12-02 - 03:15
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 Mon Dec 01, 2025 12:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
1807004999489,4cyclictest1905172-21kworker/u8:0+events_unbound12:14:590
1807004999489,4cyclictest1905172-21kworker/u8:0+events_unbound12:14:590
1807009999386,5cyclictest1853724-21kworker/u8:3+events_unbound10:00:241
1807004999180,8cyclictest1860765-21latency_hist09:55:010
1807004999085,4cyclictest1877185-21kworker/u8:2+events_unbound11:30:010
1807004998883,4cyclictest1831582-21kworker/u8:1+flush-179:008:35:290
1807009998775,9cyclictest1914066-21latency_hist12:40:011
1807004998680,4cyclictest1133891-21kworker/u8:0+flush-179:008:20:000
1807004998579,5cyclictest1872152-21kworker/u8:0+events_unbound10:35:010
1807004998378,3cyclictest1821990-21kworker/u8:1+events_unbound08:10:230
1807004998273,6cyclictest1911111-21/usr/sbin/munin12:30:240
1807009997972,5cyclictest1133891-21kworker/u8:0+flush-179:008:20:261
1807004997973,4cyclictest1879834-21kworker/u8:1+flush-179:010:50:250
1807004997874,3cyclictest1803864-21kworker/u8:2+flush-179:007:20:240
1807004997772,3cyclictest1877185-21kworker/u8:2+events_unbound11:20:230
1807004997770,5cyclictest1855757-21kworker/u8:2+flush-179:009:45:000
1807009997668,5cyclictest1834988-21kworker/u8:0+flush-179:008:35:001
1807004997666,8cyclictest271-21systemd-journal10:40:000
1807009997567,6cyclictest1879834-21kworker/u8:1+events_unbound11:00:251
1807004997570,4cyclictest1872152-21kworker/u8:0+events_unbound11:05:000
1807004997569,4cyclictest1828410-21kworker/u8:2+events_unbound08:40:140
1807009997465,7cyclictest1808971-21/usr/sbin/munin07:15:241
1807004997469,4cyclictest1902956-21kworker/u8:3+flush-179:012:05:210
1807004997469,3cyclictest1902005-21kworker/u8:1+events_unbound12:00:240
180700499730,72cyclictest1-21systemd09:30:000
1807009997267,4cyclictest1872172-21kworker/u8:2+flush-179:010:30:261
1807009997265,5cyclictest1831582-21kworker/u8:1+flush-179:010:15:001
1807004997266,4cyclictest1867624-21kworker/u8:0+events_unbound10:15:230
1807009997166,4cyclictest1893091-21kworker/u8:1+events_unbound11:49:591
1807009997163,6cyclictest1853724-21kworker/u8:3+flush-179:009:40:011
1807004997165,4cyclictest1879834-21kworker/u8:1+events_unbound11:10:250
1807009997064,4cyclictest1879834-21kworker/u8:1+flush-179:010:55:151
180700999700,68cyclictest723-21Xorg07:49:581
1807004997066,3cyclictest1877185-21kworker/u8:2+events_unbound11:15:250
1807004997058,9cyclictest1862617-21latency_hist10:00:010
1807009996962,5cyclictest1815398-21kworker/u8:3+flush-179:007:50:161
1807004996963,5cyclictest1905172-21kworker/u8:0+flush-179:012:35:250
1807004996963,4cyclictest1831582-21kworker/u8:1+events_unbound08:45:180
1807004996961,6cyclictest1831582-21kworker/u8:1+events_unbound08:25:240
1807009996861,5cyclictest1133891-21kworker/u8:0+events_unbound07:15:011
1807004996860,6cyclictest1133891-21kworker/u8:0+events_unbound07:25:010
1807004996860,5cyclictest1905172-21kworker/u8:0+flush-179:012:20:210
1807009996762,4cyclictest1841359-21kworker/u8:0+events_unbound08:55:251
1807009996760,6cyclictest1825879-21kworker/u8:3+flush-179:008:15:001
1807009996760,5cyclictest1875348-21apt-get10:40:031
1807004996759,6cyclictest1854116-21latency_hist09:35:010
1807004996757,5cyclictest1133891-21kworker/u8:0+flush-179:007:20:000
1807004996754,5cyclictest1869020-21kworker/u8:3+flush-179:010:25:230
180701299660,1cyclictest0-21swapper/309:02:593
1807009996659,5cyclictest1853724-21kworker/u8:3+flush-179:009:50:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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