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2026-05-18 - 13:30

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 Mon May 18, 2026 00:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
273962521817,5189sleep225585-21kworker/2:020:31:002
66582363136,3546sleep06123-21kworker/u8:121:09:300
66582363136,3546sleep06123-21kworker/u8:121:09:300
230552275214,2721sleep34817-21kworker/u8:020:19:303
776828656,810sleep06242-21kworker/0:219:31:070
776828656,810sleep06242-21kworker/0:219:31:070
24496257516,542sleep224556-21/usr/sbin/munin22:04:432
915245825,417sleep21064-21/usr/sbin/munin20:49:462
915245825,417sleep21064-21/usr/sbin/munin20:49:462
1619226869,159sleep00-21swapper/000:19:330
89422670,6sleep30-21swapper/322:34:223
27173222915,191sleep027318-21grep20:30:260
2566422257,202sleep025700-21fschecks_count22:09:330
1472221714,190sleep31483-21sort00:19:243
4839220766,82sleep00-21swapper/019:24:160
18406220311,175sleep018441-21latency20:04:380
32381220010,175sleep032427-21latency_hist20:49:150
1451521917,173sleep0363-21snmpd19:51:420
15697218965,38sleep0662-21cron21:39:130
15697218965,38sleep0662-21cron21:39:130
3237021757,154sleep00-21swapper/000:14:320
29508216910,16sleep00-21swapper/020:39:260
15120216512,136sleep215273-21awk21:34:472
15120216512,136sleep215273-21awk21:34:472
13999216274,66sleep00-21swapper/023:14:530
10677215441,101sleep010724-21ntpq23:04:400
611621539,127sleep06173-21gpgv21:09:130
611621539,127sleep06173-21gpgv21:09:130
27354215245,93sleep027388-40mandb23:59:140
27354215245,93sleep027388-40mandb23:59:140
24872215287,16sleep024953-21latency20:24:360
21304214911,76sleep00-21swapper/021:54:480
561221477,12sleep30-21swapper/319:25:333
2286214638,90sleep00-21swapper/019:14:440
31896214520,105sleep231935-21cut22:29:342
12667214215,100sleep00-21swapper/021:29:160
6695213914,112sleep06771-21switchtime00:34:430
6695213914,112sleep06771-21switchtime00:34:430
24517213974,14sleep00-21swapper/023:49:290
11200213811,105sleep011289-21apt-config19:44:150
11200213811,105sleep011289-21apt-config19:44:150
8212213714,103sleep38263-21cpuspeed21:14:333
525921376,45sleep00-21swapper/022:48:410
2709921379,69sleep00-21swapper/022:14:260
1184213751,69sleep01298-21sed19:14:150
11935213323,33sleep012004-21sort19:44:390
12413213211,66sleep012503-21xargs23:09:450
32350213154,60sleep00-21swapper/022:29:440
1855221299,110sleep0363-21snmpd21:45:470
1855221299,110sleep0363-21snmpd21:45:470
7431212718,87sleep37572-21unixbench_multi19:29:453
7431212718,87sleep37572-21unixbench_multi19:29:453
4441212780,34sleep24484-21ntp_kernel_pll_22:44:402
16579212312,95sleep016631-21sort19:59:290
25259212121,80sleep125411-21sed23:49:471
20500212139,63sleep020648-21gpgv21:54:150
15273211945,16sleep00-21swapper/019:54:370
10519211831,69sleep010663-21unixbench_singl21:19:470
1481211748,57sleep01528-21cat20:54:160
1481211748,57sleep01528-21cat20:54:160
22668211619,79sleep122516-21latency_hist20:19:161
2660211527,76sleep00-21swapper/020:55:080
2660211527,76sleep00-21swapper/020:55:080
27939211414,81sleep127984-21/usr/sbin/munin20:34:301
13226211418,68sleep313347-21grep23:14:163
17537211115,81sleep317545-21acpi21:44:253
17537211115,81sleep317545-21acpi21:44:253
20227211016,22sleep00-21swapper/020:09:420
5858210919,76sleep35907-21unin-run00:34:133
5858210919,76sleep35907-21unin-run00:34:133
19603210945,17sleep019601-21munin-run23:34:150
13580210918,73sleep313096-21apt-get23:14:243
31898210840,15sleep00-21swapper/000:12:060
17272210825,67sleep317274-21cron21:44:133
17272210825,67sleep317274-21cron21:44:133
17269210710,86sleep0363-21snmpd21:44:100
17269210710,86sleep0363-21snmpd21:44:100
16103210722,70sleep216123-21fschecks_count21:39:362
16103210722,70sleep216123-21fschecks_count21:39:362
15777210713,79sleep315908-21cat21:39:163
15777210713,79sleep315908-21cat21:39:163
8610210636,50sleep00-21swapper/021:14:430
21506210642,47sleep00-21swapper/023:39:320
29818210527,37sleep00-21swapper/022:22:170
27055210514,79sleep327168-21cat20:30:253
30515210417,71sleep130533-21idleruntime-cro00:09:121
30515210417,71sleep130533-21idleruntime-cro00:09:121
10365210420,67sleep210445-21grep19:39:452
10365210420,67sleep210445-21grep19:39:452
236821036,84sleep00-21swapper/022:39:170
5802210215,74sleep25846-21if_eth022:49:362
2508121026,10sleep00-21swapper/022:06:340
21100210224,63sleep121105-21modprobe23:39:131
8989210118,63sleep28693-21/usr/sbin/munin22:59:372
22578210112,71sleep022595-21munin-run20:19:150
10741210115,71sleep310805-21ps23:04:433
16746210017,64sleep316800-21cpuspeed23:24:293
889129920,63sleep29044-21awk21:14:492
2436429913,71sleep024487-21latency_hist20:24:160
1864129915,66sleep318732-21cut20:04:453
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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