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2026-08-17 - 23:48
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 Aug 17, 2026 12:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
156603599136126,7cyclictest1662662-21latency_hist12:05:021
156603599136125,8cyclictest1641700-21latency_hist11:00:021
156603099134115,15cyclictest1574307-21latency_hist07:35:000
156603599132124,5cyclictest1559741-21kworker/u8:1+events_unbound07:50:011
156603099132121,8cyclictest1565804-21latency_hist07:10:020
156603099131112,10cyclictest1606401-21kworker/u8:2+flush-179:009:20:240
156603599128116,9cyclictest1213033-21systemd-journal10:25:001
156603599126119,5cyclictest1638303-21kworker/u8:3+events_unbound11:45:011
156603599125116,7cyclictest1659456-21kworker/u8:0+flush-179:011:55:001
156603099121104,13cyclictest1213033-21systemd-journal09:20:000
15660309911996,14cyclictest1594989-21apt-get08:35:120
156603599115106,6cyclictest1606401-21kworker/u8:2+flush-179:009:20:201
156603599114108,5cyclictest1576234-21kworker/u8:3+flush-179:008:54:591
156603599114107,5cyclictest1672467-21latency_hist12:35:011
156603599111106,4cyclictest1576234-21kworker/u8:3+events_unbound08:20:011
156603599111104,5cyclictest1638303-21kworker/u8:3+events_unbound11:55:231
156603599110103,5cyclictest1559741-21kworker/u8:1+flush-179:007:20:001
156603599110101,6cyclictest1638303-21kworker/u8:3+flush-179:011:45:211
156603099110100,7cyclictest1583048-21kworker/u8:2+events_unbound08:15:010
156603099109100,7cyclictest1583067-21latency_hist08:00:010
156603599108100,5cyclictest1559741-21kworker/u8:1+flush-179:007:40:151
15660309910898,7cyclictest1614089-21kworker/u8:1+flush-179:009:35:160
15660359910798,7cyclictest1615675-21kworker/u8:2+flush-179:010:15:191
15660359910796,8cyclictest1614089-21kworker/u8:1+flush-179:009:40:261
156603599107100,5cyclictest1576234-21kworker/u8:3+flush-179:009:00:201
156603599107100,5cyclictest1576234-21kworker/u8:3+flush-179:009:00:191
15660359910699,5cyclictest1615675-21kworker/u8:2+events_unbound09:45:191
15660359910697,7cyclictest1610905-21kworker/u8:0+flush-179:009:30:011
15660359910596,6cyclictest1583048-21kworker/u8:2+flush-179:008:00:271
15660359910497,5cyclictest1647128-21kworker/u8:1+events_unbound11:15:221
15660359910496,5cyclictest1576234-21kworker/u8:3+flush-179:008:55:191
15660359910495,6cyclictest1583048-21kworker/u8:2+flush-179:008:10:211
15660359910494,8cyclictest1213033-21systemd-journal07:55:011
15660359910398,4cyclictest1576234-21kworker/u8:3+events_unbound08:10:001
15660359910396,5cyclictest1610905-21kworker/u8:0+flush-179:009:55:181
15660309910392,8cyclictest1638303-21kworker/u8:3+flush-179:011:20:200
15660359910295,5cyclictest1614089-21kworker/u8:1+flush-179:009:35:151
15660359910295,4cyclictest1559741-21kworker/u8:1+flush-179:007:10:231
15660309910293,6cyclictest1620469-21latency_hist09:55:010
15660309910191,7cyclictest1213033-21systemd-journal12:00:000
15660359910095,3cyclictest1615675-21kworker/u8:2+flush-179:010:15:011
15660359910091,7cyclictest1622113-21kworker/u8:1+flush-179:010:55:001
15660359910080,6cyclictest1559741-21kworker/u8:1+events_unbound07:35:201
1566035999992,5cyclictest1622113-21kworker/u8:1+flush-179:011:05:241
1566035999990,6cyclictest1601336-21kworker/u8:1+events_unbound09:05:191
1566035999990,6cyclictest1601336-21kworker/u8:1+events_unbound09:05:191
1566035999981,5cyclictest1559741-21kworker/u8:1+events_unbound07:30:231
1566030999991,5cyclictest1576234-21kworker/u8:3+flush-179:008:50:170
1566030999986,10cyclictest1662710-21kworker/u8:2+flush-179:012:10:210
1566030999986,10cyclictest1662710-21kworker/u8:2+flush-179:012:10:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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