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2026-07-25 - 07:25

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 50 highest latencies:
System rackbslot7s.osadl.org (updated Sat Jul 25, 2026 00:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
320929496,928sleep13217-21ntpq22:03:341
1508425696,528sleep115126-21ntpq20:58:331
2256123176,251sleep122703-21latency_hist21:23:081
2256123176,251sleep122703-21latency_hist21:23:081
23078229515,264sleep123179-21fschecks_time23:08:251
8143229054,188sleep10-21swapper/100:03:241
23133228512,259sleep07203-21kworker/0:019:41:340
23133228512,259sleep07203-21kworker/0:019:41:340
13539228431,209sleep113517-21latency_hist19:13:081
13539228431,209sleep113517-21latency_hist19:13:081
7966227612,249sleep28036-21sensors_temp22:18:362
1987622587,238sleep00-21swapper/022:58:190
31001225459,133sleep10-21swapper/123:33:081
23237223245,138sleep122742-21/usr/sbin/munin21:23:371
23237223245,138sleep122742-21/usr/sbin/munin21:23:371
22748222528,181sleep1364-21snmpd23:08:091
1907221134,141sleep11882-21/usr/sbin/munin23:43:221
28727220464,84sleep10-21swapper/119:58:381
28727220464,84sleep10-21swapper/119:58:381
29860218616,51sleep10-21swapper/120:03:271
29860218616,51sleep10-21swapper/120:03:271
28814218611,159sleep228898-21find19:58:392
28814218611,159sleep228898-21find19:58:392
9690217512,118sleep19685-21apt-get00:08:211
9690217512,118sleep19685-21apt-get00:08:211
1870021709,51sleep118736-21ntpq22:53:311
31698216910,118sleep131740-21ntp_kernel_pll_20:08:311
127921629,140sleep11305-21fschecks_count21:58:251
25667216137,68sleep125741-21switchtime19:48:371
25667216137,68sleep125741-21switchtime19:48:371
1493321597,14sleep10-21swapper/100:23:391
1493321597,14sleep10-21swapper/100:23:391
7906215422,58sleep10-21swapper/122:18:351
7565215129,50sleep10-21swapper/120:33:391
18405214863,27sleep10-21swapper/121:09:151
26591214515,60sleep10-21swapper/121:33:381
5477214418,13sleep10-21swapper/123:53:351
3028321449,79sleep130313-21sed21:48:071
16683214013,53sleep10-21swapper/121:03:301
26564213925,93sleep326058-21apt-get23:18:163
20137213972,53sleep11-21systemd19:33:071
20137213972,53sleep11-21systemd19:33:071
10083213548,20sleep10-21swapper/120:43:231
26924212947,27sleep126960-21latency19:53:381
14401212921,88sleep214544-21unixbench_singl22:38:392
12957212913,69sleep10-21swapper/100:18:301
12957212913,69sleep10-21swapper/100:18:301
21704212812,99sleep020593-21kworker/0:121:18:350
21704212812,99sleep020593-21kworker/0:121:18:350
11636212813,58sleep10-21swapper/120:48:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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