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2025-04-02 - 04:46

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #7

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.

Note that this system runs a non-RT kernel.
Data to construct the above plot have been generated using the RT test utility cyclictest.

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 20 highest latencies:
System rackbslot7s.osadl.org (updated Wed Apr 02, 2025 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28495210099,978sleep028011-1kworker/0:2H00:25:190
694129267,904sleep36989-21ntpq23:05:563
1542526986,680sleep315436-21ntpq19:45:253
1542526986,680sleep315436-21ntpq19:45:253
23780246511,436sleep123814-21unin-run20:19:591
531924456,428sleep3370-21snmpd19:14:123
4575240013,372sleep04586-21ntpq19:10:260
2596523965,381sleep37745-21kworker/3:000:17:183
2449233418,290sleep32481-21modprobe20:54:583
2449233418,290sleep32481-21modprobe20:54:583
2116523240,65sleep10-21swapper/100:00:151
9237225118,212sleep09297-21/usr/sbin/munin19:25:280
24839224850,179sleep30-21swapper/300:10:523
31198224659,105sleep331328-21unixbench_multi20:40:373
8847224461,164sleep38909-21fschecks_time19:25:183
20618222720,189sleep3312-21rs:main3
13671222316,189sleep313713-21latency23:30:183
106392221128,62sleep30-21swapper/319:30:233
15849221539,91sleep30-21swapper/323:40:153
9451220828,118sleep39602-21sed23:15:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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