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2026-06-11 - 16:13

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 100 highest latencies:
System rackbslot7s.osadl.org (updated Thu Jun 11, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
109622240111,2364sleep010532-21kworker/0:010:23:050
206462526491,22sleep220648-21sshd12:35:052
843725219,498sleep0194-21jbd2/mmcblk2p2-11:57:510
843725219,498sleep0194-21jbd2/mmcblk2p2-11:57:510
23299247928,433sleep323407-21fschecks_time07:38:063
2498523749,351sleep324471-21apt-get07:43:033
287092329136,175sleep328747-21processes11:18:133
287092329136,175sleep328747-21processes11:18:133
2969123286,282sleep329727-21ntpq09:38:093
3784230431,257sleep23816-21tune2fs08:18:152
4162230016,200sleep34198-21ntp_kernel_err11:43:083
1491822909,265sleep315010-21basename07:12:503
22365225189,118sleep322507-21unixbench_singl07:33:173
18917224162,165sleep30-21swapper/310:48:083
1148222279,201sleep311590-21timerandwakeup10:23:163
31813221951,25sleep30-21swapper/311:28:183
31813221951,25sleep30-21swapper/311:28:183
21275221738,21sleep30-21swapper/309:13:013
26195220927,166sleep326277-21unin-run11:12:473
28715220811,179sleep328826-21timerwakeupswit07:53:173
17365220831,40sleep317376-21kernelversion10:43:073
8752220125,26sleep30-21swapper/308:33:073
8752220125,26sleep30-21swapper/308:33:073
270921988,18sleep30-21swapper/311:38:123
15272219011,165sleep315336-21find08:53:143
1784218947,77sleep30-21swapper/309:53:073
1784218947,77sleep30-21swapper/309:53:073
2016621857,16sleep30-21swapper/310:52:563
14853218512,153sleep314687-21/usr/sbin/munin12:18:063
2571921839,153sleep325763-21latency_hist09:27:473
31361217428,62sleep330839-21/usr/sbin/munin09:43:143
27352216111,135sleep327539-21latency_hist09:32:483
19007215920,11sleep30-21swapper/312:28:523
2012521567,13sleep30-21swapper/309:08:293
17642215011,117sleep30-21swapper/307:18:153
27845214812,98sleep327920-21latency_hist07:52:483
15555214627,50sleep30-21swapper/310:38:023
655321455,47sleep30-21swapper/311:52:053
1443121438,11sleep30-21swapper/308:51:493
2888821395,12sleep30-21swapper/309:36:153
3062921386,10sleep30-21swapper/307:58:583
3080021345,11sleep30-21swapper/311:24:313
1341221345,10sleep30-21swapper/310:29:103
10094213410,66sleep30-21swapper/312:03:033
1052621336,11sleep30-21swapper/310:22:033
2074221315,10sleep30-21swapper/312:36:193
1458521315,10sleep30-21swapper/307:11:123
105521318,86sleep31102-21ntpq11:33:193
2400321305,47sleep30-21swapper/309:21:133
21854212928,42sleep321872-21sort10:58:053
582521285,50sleep30-21swapper/310:06:443
523321278,16sleep00-21swapper/008:23:020
2592821257,15sleep00-21swapper/009:27:520
647921246,85sleep30-21swapper/308:27:373
2431821205,83sleep30-21swapper/311:04:193
19149212010,17sleep30-21swapper/307:23:163
19149212010,17sleep30-21swapper/307:23:163
961921185,80sleep30-21swapper/312:01:143
961921185,80sleep30-21swapper/312:01:143
7049211621,61sleep312-21rcu_sched10:08:183
30869211511,90sleep230870-21sshd08:02:042
14749211116,82sleep114781-21sed07:12:481
778421099,18sleep37910-21timerwakeupswit08:29:273
31072210923,30sleep30-21swapper/308:02:503
246921099,19sleep30-21swapper/308:13:163
8153210710,14sleep30-21swapper/311:57:463
17229210725,15sleep30-21swapper/308:58:193
1673521077,14sleep20-21swapper/208:58:102
22108210614,73sleep022170-21sendmail_mailst07:33:140
1115210524,27sleep30-21swapper/309:51:223
1115210524,27sleep30-21swapper/309:51:223
24173210413,76sleep124254-21latency_hist09:22:481
7500210317,71sleep07536-21latency_hist10:12:470
2039321027,13sleep30-21swapper/307:28:093
421621005,62sleep30-21swapper/310:00:593
25155210015,68sleep225302-21awk09:23:182
1733321008,30sleep30-21swapper/312:23:433
1733321008,30sleep30-21swapper/312:23:433
1390221006,32sleep30-21swapper/312:13:173
2848029921,58sleep228609-21unixbench_singl09:33:232
271992999,48sleep30-21swapper/311:13:483
85682989,28sleep10-21swapper/108:33:011
85682989,28sleep10-21swapper/108:33:011
1832929764,15sleep30-21swapper/309:03:113
1397529721,38sleep00-21swapper/010:32:580
101402977,51sleep30-21swapper/308:37:593
511129623,51sleep20-21swapper/211:47:482
2295929615,61sleep122903-21latency_hist07:37:481
124902965,63sleep30-21swapper/312:08:243
2624529524,50sleep126264-21munin-run07:47:451
152372958,32sleep30-21swapper/310:37:463
12842955,58sleep30-21swapper/308:09:083
12842955,58sleep30-21swapper/308:09:083
88412945,10sleep30-21swapper/310:15:373
1510129416,62sleep215126-21ls07:12:532
3259729115,60sleep232619-21munin-run11:32:452
3259729115,60sleep232619-21munin-run11:32:452
116862916,28sleep30-21swapper/308:43:003
2845129026,51sleep028217-21/usr/sbin/munin11:18:050
2845129026,51sleep028217-21/usr/sbin/munin11:18:050
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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