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2026-08-14 - 16:55
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 Fri Aug 14, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
179865399153139,5cyclictest1874300-21kworker/u8:0+events_unbound11:10:010
179865399143135,6cyclictest1846579-21kworker/u8:0+events_unbound09:45:010
179865699137126,8cyclictest1817679-21latency_hist08:10:011
179865399137130,5cyclictest1864361-21kworker/u8:3+events_unbound10:45:010
179865699135122,10cyclictest1213033-21systemd-journal09:50:011
179865399135118,5cyclictest1798573-21kworker/u8:0+flush-179:007:10:140
179865399131121,7cyclictest1876372-21kworker/u8:1+flush-179:011:15:190
179865399130121,6cyclictest1836222-21kworker/u8:0+events_unbound09:10:140
17986569912794,24cyclictest1892285-21latency_hist12:00:021
179865399127117,7cyclictest1882703-21kworker/u8:0+events_unbound11:30:140
179865399127115,10cyclictest1856414-21apt-get10:10:110
179865399126119,4cyclictest1858364-21kworker/u8:1+flush-179:010:20:250
179865699124115,6cyclictest1835442-21/usr/sbin/munin09:05:231
179865399124118,4cyclictest1850799-21kworker/u8:1+flush-179:010:00:240
179865399124114,7cyclictest1905028-21latency_hist12:40:010
179865399123115,6cyclictest1882703-21kworker/u8:0+events_unbound12:10:240
179865399119114,3cyclictest1816070-21kworker/u8:2+flush-179:008:05:000
179865699118107,8cyclictest1860942-21latency_hist10:25:011
179865399118111,4cyclictest1836933-21kworker/u8:3+flush-179:009:25:230
179865399117112,3cyclictest1836933-21kworker/u8:3+flush-179:009:20:250
179865699115106,6cyclictest1871073-21latency_hist10:55:011
179865399115109,4cyclictest1860918-21kworker/u8:0+events_unbound10:30:140
179865399115108,5cyclictest1852940-21kworker/u8:2+events_unbound10:20:010
179865399115107,6cyclictest1831985-21kworker/u8:1+flush-179:009:00:200
179865399115107,6cyclictest1816070-21kworker/u8:2+flush-179:008:50:200
179865399114109,4cyclictest1822445-21kworker/u8:0+flush-179:008:35:000
179865399113107,4cyclictest1805990-21kworker/u8:1+events_unbound07:40:190
17986539911298,10cyclictest1213033-21systemd-journal11:40:010
17986539911293,5cyclictest1854554-21kworker/u8:0+events_unbound10:05:250
179865399112106,4cyclictest1882703-21kworker/u8:0+flush-179:012:00:250
179865399112104,5cyclictest1822445-21kworker/u8:0+events_unbound08:25:240
179865399112103,6cyclictest1885971-21kworker/u8:2+events_unbound11:50:140
17986569910999,7cyclictest1897598-21diskstats12:15:161
179865399109103,4cyclictest1806484-21kworker/u8:3+flush-179:007:50:170
179865399109101,6cyclictest1860918-21kworker/u8:0+flush-179:010:50:260
17986539910899,6cyclictest1882703-21kworker/u8:0+events_unbound11:45:210
179865399107102,4cyclictest1882703-21kworker/u8:0+flush-179:012:05:270
17986539910699,5cyclictest1816070-21kworker/u8:2+events_unbound08:40:260
17986539910698,5cyclictest1852940-21kworker/u8:2+events_unbound10:29:590
17986539910597,5cyclictest1898142-21kworker/u8:2+events_unbound12:20:260
17986569910494,7cyclictest1836933-21kworker/u8:3+flush-179:009:20:161
17986569910488,11cyclictest1213033-21systemd-journal08:59:591
17986539910497,5cyclictest1891722-21kworker/u8:1+events_unbound11:55:220
17986539910497,5cyclictest1880364-21kworker/u8:3+events_unbound11:25:150
17986539910493,6cyclictest1816070-21kworker/u8:2+events_unbound08:20:220
17986569910397,4cyclictest1882703-21kworker/u8:0+flush-179:011:40:221
17986539910395,4cyclictest1828813-21kworker/u8:0+events_unbound08:45:140
17986539910393,7cyclictest1822445-21kworker/u8:0+flush-179:008:35:160
17986539910392,9cyclictest1805990-21kworker/u8:1+flush-179:007:40:000
17986539910296,4cyclictest1793791-21kworker/u8:3+events_unbound07:15:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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