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2026-07-01 - 00:33

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 Tue Jun 30, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12276260815,60sleep10-21swapper/108:55:081
27386239916,361sleep027387-21cron09:44:350
19377236316,262sleep119516-21unixbench_multi07:35:071
102323600,16sleep110273-21cyclictest08:19:571
12596230249,159sleep112676-21fschecks_time07:14:561
1067322907,49sleep10-21swapper/112:15:121
30178228348,193sleep129805-21/usr/sbin/munin08:09:571
28678225818,140sleep10-21swapper/111:29:371
7010223217,200sleep17013-21cron12:04:341
2739022138,193sleep127437-21unin-run09:44:361
4309220815,179sleep24351-21latency_hist10:14:382
1025422088,188sleep0364-21snmpd10:31:400
25179220417,21sleep00-21swapper/007:55:100
25179220417,21sleep00-21swapper/007:55:100
11771220020,138sleep111793-21idleruntime-cro07:14:351
11771220020,138sleep111793-21idleruntime-cro07:14:351
4724219511,144sleep14810-21switchtime11:55:051
24819219432,147sleep124949-21latency_hist07:54:381
7675219135,85sleep10-21swapper/110:24:511
7675219135,85sleep10-21swapper/110:24:511
180721888,169sleep0364-21snmpd08:22:030
17212218518,108sleep117302-21fschecks_time12:34:551
12942218315,154sleep213005-21cut07:15:052
32305218223,59sleep10-21swapper/108:15:141
29054217549,51sleep10-21swapper/108:05:081
29054217549,51sleep10-21swapper/108:05:081
11383217523,55sleep10-21swapper/110:35:041
1765721716,152sleep117717-21cat10:54:561
3084621709,17sleep10-21swapper/109:54:541
26410216911,140sleep126455-21awk07:59:351
26410216911,140sleep126455-21awk07:59:351
2342021686,150sleep1364-21snmpd11:11:361
14745216611,138sleep114885-21latency_hist09:04:371
22188216022,120sleep10-21swapper/107:45:011
25811215413,88sleep125839-21sh09:39:351
12868215423,113sleep312893-21sendmail08:59:343
6211215146,56sleep10-21swapper/110:19:541
1568221518,101sleep115793-21latency_hist10:49:381
3766214851,44sleep10-21swapper/110:10:091
20980214853,48sleep10-21swapper/109:24:371
25596214757,41sleep10-21swapper/111:19:521
25596214757,41sleep10-21swapper/111:19:521
3053621459,99sleep130612-21latency_hist09:54:381
1815921457,14sleep20-21swapper/209:14:522
18174214130,33sleep00-21swapper/009:14:540
22104214018,97sleep222130-21cut11:09:352
7014213810,114sleep21-21systemd12:04:352
630621387,12sleep20-21swapper/208:35:102
14790213646,45sleep10-21swapper/107:20:091
15605213312,104sleep215599-21apt-get07:24:502
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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