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2026-03-10 - 22:10

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 Tue Mar 10, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
161532116642,1108sleep05436-1kworker/0:0H07:33:400
17066210229,995sleep316128-21/usr/sbin/munin07:34:003
16223277315,742sleep116268-21/usr/sbin/munin10:58:481
24312243310,405sleep024348-21ntpq07:58:480
29668243026,351sleep029758-21fschecks_time09:58:430
29668243026,351sleep029758-21fschecks_time09:58:430
149342407129,259sleep014962-21sh12:38:230
2688226767,179sleep02753-21fschecks_time11:58:580
213422667,246sleep02170-21ntpq10:13:450
213422667,246sleep02170-21ntpq10:13:450
2343422516,235sleep013441-21snmpd11:21:280
2343422516,235sleep013441-21snmpd11:21:280
18867224645,189sleep018179-21/usr/sbin/munin09:23:550
26799224441,182sleep026820-21latency_hist08:08:250
5037223737,184sleep05095-21fschecks_count10:23:420
1515322289,207sleep015217-21grep09:13:420
1674122278,206sleep016814-21cut09:18:420
3751222632,177sleep03796-21ntpq10:18:460
13091222645,83sleep00-21swapper/010:48:460
21139222038,126sleep021267-21timerwakeupswit11:13:530
21139222038,126sleep021267-21timerwakeupswit11:13:530
4077221512,188sleep04088-21acpi12:03:350
17617220434,121sleep00-21swapper/011:03:440
1526219150,28sleep00-21swapper/010:13:250
23847219087,85sleep023851-21acpi11:23:340
7279218510,162sleep32117-1kworker/3:1H08:48:373
20915218346,81sleep00-21swapper/007:48:420
20915218346,81sleep00-21swapper/007:48:420
20257217561,99sleep020298-21latency_hist11:13:250
1848217421,134sleep31903-21fschecks_count10:13:403
1848217421,134sleep31903-21fschecks_count10:13:403
19513217217,79sleep219550-21latency_hist09:28:252
1986216921,131sleep11993-21kworker/u8:111:58:231
30149216611,106sleep08857-21munin-node08:18:340
27724216647,59sleep00-21swapper/009:53:260
27724216647,59sleep00-21swapper/009:53:260
26577216646,80sleep00-21swapper/009:48:460
910721587,14sleep00-21swapper/008:53:470
910721587,14sleep00-21swapper/008:53:470
18368215846,98sleep018495-21sed07:38:530
1157021576,116sleep00-21swapper/012:24:580
2466521568,104sleep00-21swapper/009:43:370
1562421559,130sleep015681-21apt-config07:33:240
29762215314,124sleep129820-21if_eth009:58:441
29762215314,124sleep129820-21if_eth009:58:441
9316215243,22sleep00-21swapper/010:38:240
1048121517,130sleep00-21swapper/008:58:400
611221488,104sleep013441-21snmpd12:08:520
26969214647,81sleep00-21swapper/011:33:390
9141214343,86sleep09245-21fschecks_count07:13:300
9141214343,86sleep09245-21fschecks_count07:13:300
26680214345,80sleep026699-21sh11:33:230
12967214020,102sleep012968-21fschecks_count07:23:590
2237221386,42sleep07256-21cyclictest09:36:020
2237221386,42sleep07256-21cyclictest09:36:020
15622213863,19sleep00-21swapper/010:58:270
12210213814,108sleep012283-21fschecks_time12:28:420
4571213714,108sleep14625-21processes12:03:521
30491213749,50sleep030535-21ntpq11:43:490
17186213614,107sleep317139-21latency_hist11:03:263
484213452,43sleep00-21swapper/011:53:250
8717213114,99sleep38789-21unin-run12:18:233
19271213148,47sleep019266-21apt-get07:43:380
19271213148,47sleep019266-21apt-get07:43:380
10967213116,48sleep211005-21/usr/sbin/munin12:23:472
17966213029,83sleep318013-21latency_hist09:23:263
5700212954,19sleep00-21swapper/008:43:460
3939212952,17sleep00-21swapper/008:38:370
1580212818,80sleep10-21swapper/110:13:261
1580212818,80sleep10-21swapper/110:13:261
19279212711,42sleep119347-21sh07:43:431
19279212711,42sleep119347-21sh07:43:431
10338212544,43sleep010472-21sed12:23:250
7868212415,96sleep17899-21ntp_kernel_pll_12:14:051
7870212238,63sleep00-21swapper/007:08:490
31609212239,45sleep031671-21/usr/sbin/munin10:03:520
16562212211,68sleep016709-21unixbench_singl10:58:550
11490212211,67sleep011532-21grep07:18:510
7676212012,83sleep00-21swapper/008:49:030
1298821170,27sleep112992-21unixbench_singl12:28:541
7413211620,77sleep26922-21apt-get12:13:342
29334211628,29sleep20-21swapper/209:58:252
29334211628,29sleep20-21swapper/209:58:252
4172211014,76sleep24180-21sshd12:03:412
3700211012,40sleep03770-21latency_hist08:38:250
3700211012,40sleep03770-21latency_hist08:38:250
4358210913,80sleep34403-21ntp_states08:38:563
7257210716,73sleep16779-21apt-get08:48:351
16339210518,62sleep116340-21cron09:18:231
8791210310,17sleep00-21swapper/012:18:240
6897210330,22sleep06939-21awk10:28:470
24428210327,63sleep024487-21date09:43:250
20146210313,22sleep00-21swapper/009:28:480
19115210212,75sleep319173-21idleruntime11:08:433
11834210216,67sleep111851-21modprobe12:28:231
1214621006,43sleep00-21swapper/009:03:440
823529924,51sleep38383-21grep07:08:563
121262995,46sleep00-21swapper/010:44:260
2304429726,15sleep00-21swapper/007:53:550
1692429613,68sleep117053-21awk07:33:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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