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2026-07-12 - 01:05

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 Sat Jul 11, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7202116012,1132sleep3722-21diskstats11:39:153
198182105726,972sleep319627-21latency_hist09:13:583
13357283325,794sleep113393-21ntpq07:09:251
30473269022,652sleep330545-21/usr/sbin/munin11:29:263
1083725748,548sleep010878-21ntpq12:09:200
739723667,347sleep1364-21snmpd08:34:061
739723667,347sleep1364-21snmpd08:34:061
3932322163,138sleep10-21swapper/111:38:571
18416230722,271sleep318419-21df09:09:133
23883229411,265sleep223947-21fw_packets11:09:152
19521229393,185sleep119560-21proc_pri10:54:241
12509228561,208sleep112640-21cmp07:08:571
3026722779,254sleep030308-21systemd-run08:03:560
2219227384,50sleep10-21swapper/109:59:181
14780225913,232sleep214824-21ntpq10:39:202
14780225913,232sleep214824-21ntpq10:39:202
6263225435,199sleep16415-21unixbench_singl11:54:271
31041223125,182sleep131126-21latency_hist09:48:571
8794222974,91sleep10-21swapper/110:19:241
14498221619,30sleep10-21swapper/110:39:141
14498221619,30sleep10-21swapper/110:39:141
12920221440,25sleep10-21swapper/110:34:141
28616221062,22sleep10-21swapper/111:24:161
9365219732,21sleep10-21swapper/108:39:191
9365219732,21sleep10-21swapper/108:39:191
8437219111,166sleep18556-21grep12:03:561
31865218840,18sleep10-21swapper/108:08:581
1307221869,13sleep00-21swapper/010:34:170
26554218520,150sleep126597-21cat11:18:551
2865221839,25sleep10-21swapper/109:39:281
26967218219,22sleep00-21swapper/011:19:140
24133217916,137sleep10-21swapper/107:43:581
15963217923,133sleep10-21swapper/110:44:111
15963217923,133sleep10-21swapper/110:44:111
15039217814,30sleep114917-21kworker/u8:008:58:571
668521758,154sleep16710-21fschecks_count10:14:161
668521758,154sleep16710-21fschecks_count10:14:161
22544217311,22sleep10-21swapper/107:38:571
3259021728,25sleep10-21swapper/109:53:571
24959217211,19sleep10-21swapper/111:13:261
21475217110,149sleep121508-21latency_hist09:18:561
1860021718,151sleep118678-21tr07:24:231
27355216318,129sleep10-21swapper/111:19:231
2607321599,137sleep126109-21basename09:33:551
2762121589,20sleep10-21swapper/109:38:551
10198215732,68sleep110228-21date12:08:571
505321536,51sleep10-21swapper/110:09:111
16662215229,39sleep10-21swapper/112:29:081
1741921498,94sleep10-21swapper/109:04:271
1741921498,94sleep10-21swapper/109:04:271
2841921485,28sleep10-21swapper/107:55:291
1171214891,28sleep10-21swapper/108:14:071
2741214715,95sleep12811-21sort11:44:261
2741214715,95sleep12811-21sort11:44:261
32188214516,26sleep20-21swapper/208:09:152
3105821425,27sleep10-21swapper/111:31:461
1106021429,87sleep10-21swapper/110:28:571
25087214010,115sleep025231-21cat11:13:570
13626214012,110sleep013645-21apt-get08:54:080
485821348,67sleep14932-21mailstats08:24:251
2535621346,27sleep10-21swapper/107:45:561
90621276,34sleep10-21swapper/109:54:261
90621276,34sleep10-21swapper/109:54:261
1876221248,59sleep10-21swapper/112:34:251
1876221248,59sleep10-21swapper/112:34:251
1593421248,52sleep10-21swapper/112:24:281
26336212329,34sleep10-21swapper/107:49:231
21992211710,92sleep122056-21cat09:19:211
32312211613,82sleep032368-21/usr/sbin/munin08:09:170
2899721168,17sleep10-21swapper/107:59:081
12012211517,25sleep312058-21users07:04:273
28421211315,82sleep028471-21cpuspeed11:24:100
24739211314,85sleep224788-21grep07:44:232
1467721139,16sleep10-21swapper/107:14:021
3572211217,63sleep03743-21apt-key11:48:570
3572211217,63sleep03743-21apt-key11:48:570
1966621128,16sleep10-21swapper/107:29:121
1748121125,33sleep10-21swapper/110:49:031
23466211112,76sleep10-21swapper/109:24:171
16196211123,63sleep216219-21latency_hist07:18:552
1944221095,26sleep10-21swapper/109:11:501
6147210868,18sleep10-21swapper/108:29:171
22411210521,57sleep322564-21tail09:19:313
22279210517,75sleep322371-21perl11:04:153
1216521057,66sleep10-21swapper/108:49:121
1216521057,66sleep10-21swapper/108:49:121
1198721057,64sleep111981-21apt-get12:14:101
1894210418,71sleep21899-21modprobe11:43:542
855921010,11sleep20-21swapper/212:03:562
12429210132,47sleep01-21systemd07:08:560
1088021017,31sleep10-21swapper/112:09:211
14021210029,55sleep10-21swapper/108:54:211
39882996,31sleep10-21swapper/111:49:231
39882996,31sleep10-21swapper/111:49:231
1531529918,63sleep315372-21grep08:59:163
321022987,31sleep10-21swapper/108:09:101
3116629621,60sleep231267-21timerandwakeup08:04:262
501129521,48sleep35146-21unixbench_multi08:24:273
3098729528,44sleep331011-21modprobe09:48:543
28082956,29sleep10-21swapper/108:19:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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