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2026-09-07 - 19:54

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 Sep 07, 2026 12:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6703220488,2023sleep027075-1kworker/0:0H07:33:460
2136242957,314sleep120310-21kworker/u8:010:43:231
17181240210,377sleep117384-21sed09:48:261
8081239315,363sleep28125-21ntpq09:18:492
7401234641,292sleep17459-21unin-run09:18:241
6659230845,246sleep16676-21apt-get07:33:351
3461230515,225sleep13531-21switchtime12:28:531
3117322619,238sleep031183-21ntpq07:08:520
3117322619,238sleep031183-21ntpq07:08:520
27700226069,93sleep127779-21threads10:18:531
13682224977,23sleep10-21swapper/109:38:251
5271220310,125sleep15289-21latency_hist10:53:241
5271220310,125sleep15289-21latency_hist10:53:241
15052218712,143sleep10-21swapper/107:58:411
1114218214,88sleep117-21ksoftirqd/112:23:241
282121778,154sleep12718-21cron09:03:261
30862216911,145sleep130904-21cat12:13:431
30862216911,145sleep130904-21cat12:13:431
3122021689,84sleep131357-21grep08:48:581
3202221678,82sleep10-21swapper/110:33:471
26230216710,142sleep126278-21ntpq08:33:481
26230216710,142sleep126278-21ntpq08:33:481
390821669,73sleep13985-21switchtime07:23:541
16221216517,130sleep316377-21latency_hist11:28:253
16221216517,130sleep316377-21latency_hist11:28:253
2566216418,66sleep10-21swapper/107:18:581
21475216415,29sleep00-21swapper/008:18:460
18685216265,19sleep10-21swapper/108:08:541
32457216143,106sleep132493-21ntpq08:53:501
517621609,118sleep10-21swapper/107:28:461
24203215816,91sleep124206-21latency_hist11:53:251
1205921556,11sleep10-21swapper/107:48:481
12353215231,69sleep112445-21cat11:13:541
14229215012,82sleep10-21swapper/111:18:551
14229215012,82sleep10-21swapper/111:18:551
1070921509,57sleep10-21swapper/111:08:541
1070921509,57sleep10-21swapper/111:08:541
724214518,74sleep10-21swapper/107:13:531
724214518,74sleep10-21swapper/107:13:531
5062214350,80sleep15156-21timerandwakeup12:33:531
7470213919,22sleep00-21swapper/010:58:480
7470213919,22sleep00-21swapper/010:58:480
30812213327,17sleep10-21swapper/107:08:441
30812213327,17sleep10-21swapper/107:08:441
29229212712,97sleep10-21swapper/112:08:431
8727212541,69sleep10-21swapper/111:03:411
8727212541,69sleep10-21swapper/111:03:411
31193212516,92sleep231253-21/usr/sbin/munin07:08:542
31193212516,92sleep231253-21/usr/sbin/munin07:08:542
14123212421,81sleep314269-21unixbench_singl07:53:553
1418212243,62sleep1922-21apt-get08:58:341
7738212011,92sleep27841-21timerwakeupswit10:58:542
7738212011,92sleep27841-21timerwakeupswit10:58:542
59721200,11sleep2584-21munin-run10:38:232
17467212039,61sleep10-21swapper/109:48:341
17467212039,61sleep10-21swapper/109:48:341
17723211943,64sleep117736-21munin-run11:33:231
17975211819,77sleep318030-21cpuspeed11:33:383
21205211650,54sleep121180-21/usr/sbin/munin08:18:391
10259211617,78sleep09779-21apt-get07:43:350
28920211549,50sleep10-21swapper/110:23:461
10384211417,73sleep310420-21/usr/sbin/munin07:43:463
21909211247,53sleep121955-21unin-run10:03:241
30565211138,52sleep10-21swapper/110:28:461
8415210937,54sleep10-21swapper/111:03:251
8415210937,54sleep10-21swapper/111:03:251
3383210913,17sleep20-21swapper/209:03:482
3136121080,8sleep20-21swapper/208:48:582
29903210822,21sleep20-21swapper/210:28:232
26105210716,79sleep126139-21cut11:58:421
26105210716,79sleep126139-21cut11:58:421
255721078,88sleep00-21swapper/009:01:200
25560210736,14sleep10-21swapper/108:33:241
25560210736,14sleep10-21swapper/108:33:241
22095210719,61sleep322262-21latency_hist10:03:263
15001210712,73sleep10-21swapper/111:23:431
15001210712,73sleep10-21swapper/111:23:431
8474210572,20sleep18493-21apt-get07:38:351
6679210513,20sleep20-21swapper/207:33:362
23052210535,52sleep10-21swapper/108:23:471
20073210534,14sleep10-21swapper/108:13:511
20073210534,14sleep10-21swapper/108:13:511
28563210435,23sleep10-21swapper/112:04:511
3818210315,73sleep33839-21awk07:23:523
9649210212,73sleep19694-21ntpq09:23:481
9649210212,73sleep19694-21ntpq09:23:481
5952210234,13sleep10-21swapper/110:53:481
5952210234,13sleep10-21swapper/110:53:481
10293210235,14sleep10-21swapper/107:43:401
27865210134,51sleep10-21swapper/108:38:531
27865210134,51sleep10-21swapper/108:38:531
16966210119,65sleep216977-21modprobe09:48:232
16966210119,65sleep216977-21modprobe09:48:232
15235210116,23sleep00-21swapper/009:43:250
15235210116,23sleep00-21swapper/009:43:250
9011210020,62sleep39138-21latency_hist09:23:263
18139210015,67sleep318146-21/usr/sbin/munin08:08:403
11238210032,15sleep10-21swapper/109:28:491
269629923,59sleep32761-21grep10:43:453
269629923,59sleep32761-21grep10:43:453
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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