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2026-07-05 - 23:23

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 Sun Jul 05, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
218522831104,708sleep221998-21grep12:24:492
841727219,695sleep28386-21latency_hist11:44:182
841727219,695sleep28386-21latency_hist11:44:182
1072726698,648sleep210771-21ntpq08:24:412
30647249325,452sleep130711-21/usr/sbin/munin07:44:501
298532353161,163sleep20-21swapper/207:44:192
69582286104,57sleep20-21swapper/208:14:192
246182272112,58sleep20-21swapper/207:24:492
22205222548,75sleep222350-21unixbench_singl08:59:502
4252222460,65sleep20-21swapper/211:29:412
19960221655,149sleep219043-21/usr/sbin/munin10:34:512
15415221555,57sleep20-21swapper/212:04:462
21043220329,85sleep221089-21ntp_offset10:39:432
27653219736,124sleep227787-21unixbench_multi07:34:502
17871219211,164sleep017962-21dpkg08:49:180
12999218911,164sleep213072-21systemd-run11:59:162
12999218911,164sleep213072-21systemd-run11:59:162
20920217914,128sleep220961-21cut07:14:592
17733217231,125sleep217882-21cat12:14:192
1984217016,52sleep22015-21modprobe07:59:172
31902216815,137sleep331923-21tr07:49:373
17908216635,80sleep217952-21ntpq10:29:422
24345216312,56sleep20-21swapper/210:49:482
12252216385,20sleep20-21swapper/208:29:422
401921625,129sleep00-21swapper/008:04:400
13421216224,51sleep20-21swapper/208:34:302
12006215823,114sleep212145-21unixbench_multi10:10:212
557921577,16sleep20-21swapper/211:34:372
557921577,16sleep20-21swapper/211:34:372
4132215626,21sleep24201-21sort08:04:422
29630215513,126sleep0364-21snmpd07:42:070
13823215192,17sleep20-21swapper/211:59:452
1046521518,93sleep210481-21grep11:49:392
1046521518,93sleep210481-21grep11:49:392
1956721497,35sleep20-21swapper/212:19:322
18220214825,96sleep118232-21modprobe07:09:171
31888214713,53sleep20-21swapper/209:29:502
3948214618,101sleep34012-21fschecks_time08:04:393
27790214610,15sleep30-21swapper/307:34:513
2179214630,56sleep20-21swapper/209:39:442
26340214514,51sleep226353-21basename09:14:282
26340214514,51sleep226353-21basename09:14:282
8651214416,93sleep20-21swapper/211:44:312
8651214416,93sleep20-21swapper/211:44:312
32316214427,95sleep032464-21grep07:49:460
11815214411,120sleep011720-21/usr/sbin/munin11:54:340
11815214411,120sleep011720-21/usr/sbin/munin11:54:340
24964213910,88sleep225005-21ntpq09:09:432
9470213628,42sleep30-21swapper/310:04:283
18709213646,54sleep218773-21cat07:09:382
8782213246,47sleep20-21swapper/208:19:322
27586213219,88sleep327725-21unixbench_singl10:59:503
27586213219,88sleep327725-21unixbench_singl10:59:503
28130213126,82sleep128151-21basename11:04:161
28130213126,82sleep128151-21basename11:04:161
7103212914,100sleep27238-21grep09:54:502
9206212820,90sleep0225-21systemd-journal10:04:170
84721278,68sleep2344-21apt-get11:19:232
4722212422,82sleep34866-21unixbench_singl11:29:503
28499212410,90sleep20-21swapper/209:19:452
28499212410,90sleep20-21swapper/209:19:452
3471212116,52sleep20-21swapper/211:26:262
2771212118,88sleep20-21swapper/207:59:452
25407212027,78sleep225492-21perl10:54:372
7196211814,92sleep27242-21grep08:14:312
16423211820,46sleep30-21swapper/312:09:313
31423211726,18sleep20-21swapper/207:49:202
29213211527,67sleep129230-21munin-plugin-st09:24:161
29213211527,67sleep129230-21munin-plugin-st09:24:161
22665211516,55sleep20-21swapper/212:29:332
5711211426,48sleep20-21swapper/209:49:492
1796921139,44sleep20-21swapper/212:14:312
3956211115,80sleep13973-21apt11:29:271
26410211120,53sleep20-21swapper/207:30:502
10897211112,84sleep211094-21latency_hist10:09:202
17261211020,50sleep20-21swapper/210:29:182
454210937,57sleep2621-21cat11:19:192
28421210922,47sleep20-21swapper/211:04:332
2446821078,44sleep224483-21grep12:34:382
353821059,60sleep20-21swapper/209:44:402
3200421055,15sleep00-21swapper/009:30:210
24883210513,74sleep325009-21/usr/sbin/munin12:34:473
10705210512,81sleep00-21swapper/010:08:410
5473210262,22sleep05140-21apt-get08:09:200
607429915,66sleep16076-21cron09:54:161
1924529917,62sleep319273-21idleruntime-cro12:19:163
327229812,73sleep03341-21df09:44:340
147129813,71sleep11480-21systemd-run09:39:181
3160129612,70sleep031636-21fschecks_count11:14:370
2256329616,62sleep122608-21/usr/sbin/munin10:44:431
1886129513,54sleep319007-21latency_hist10:34:193
1456629514,64sleep114567-21sendmail-mta12:04:001
2172829412,67sleep121851-21cat12:24:471
1058929414,60sleep310301-21/usr/sbin/munin08:24:383
2405929219,19sleep30-21swapper/307:24:383
1280229213,66sleep012809-21basename10:14:260
335529118,59sleep33425-21fschecks_time09:44:373
2123629117,56sleep321321-21find10:39:483
1943529019,47sleep119472-21sed10:34:421
2637528914,30sleep10-21swapper/109:14:351
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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