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2026-05-21 - 13:35

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 Thu May 21, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11312727118,7241sleep312811-21kworker/3:223:59:113
17274295419,918sleep117284-21/usr/sbin/munin21:24:121
31080266213,632sleep231169-21/usr/sbin/munin20:24:252
26568244924,405sleep326588-21cron21:54:023
26568244924,405sleep326588-21cron21:54:023
1830724426,401sleep0363-21snmpd21:25:450
23491243019,393sleep123259-21latency_hist21:44:071
259224008,380sleep02617-21awk22:19:270
18103239551,25sleep00-21swapper/019:44:050
7674235119,68sleep00-21swapper/000:19:230
12112233511,218sleep012178-21switchtime22:49:310
12112233511,218sleep012178-21switchtime22:49:310
7394233215,277sleep07432-21http20:54:030
27120231832,270sleep027138-21kernelversion21:54:240
20155230848,77sleep00-21swapper/021:34:040
1203722667,219sleep00-21swapper/000:34:130
5532224126,151sleep05563-21idleruntime-cro00:14:020
27315223444,169sleep00-21swapper/020:13:120
20267223123,153sleep020314-21ntpq19:49:260
555422218,202sleep04227-1kworker/0:0H20:45:230
29955220940,110sleep01-21systemd23:49:030
29955220940,110sleep01-21systemd23:49:030
10600220816,135sleep010638-21fschecks_count00:29:210
1238322079,161sleep012442-21latency_hist21:09:050
23023220535,132sleep023066-21grep19:59:190
10134220127,51sleep00-21swapper/022:44:230
10134220127,51sleep00-21swapper/022:44:230
32252219510,133sleep032393-21unixbench_singl22:09:340
32252219510,133sleep032393-21unixbench_singl22:09:340
926221859,108sleep00-21swapper/019:14:250
7155217355,73sleep00-21swapper/022:34:250
10274216644,63sleep00-21swapper/000:29:040
8465216552,75sleep00-21swapper/022:39:180
8222216391,53sleep00-21swapper/020:55:280
22550215210,83sleep022642-21switchtime21:39:340
7234214615,110sleep00-21swapper/019:09:200
19167214438,38sleep00-21swapper/023:14:060
166021429,18sleep00-21swapper/020:34:240
6862214118,99sleep27005-21unixbench_singl20:49:322
3875213844,77sleep03981-21fschecks_time22:24:240
2465621386,12sleep30-21swapper/320:04:233
3488213631,68sleep00-21swapper/020:39:330
30264213531,66sleep00-21swapper/022:04:250
24053213517,95sleep224089-21latency21:44:402
24053213517,95sleep224089-21latency21:44:402
13949213410,108sleep014098-21grep21:14:060
5791213319,94sleep20-21swapper/222:29:302
2144421329,79sleep00-21swapper/019:54:180
15844213243,76sleep015892-21fschecks_count21:19:230
27149213055,52sleep00-21swapper/023:39:180
14370212824,81sleep2225-21systemd-journal22:59:022
14370212824,81sleep2225-21systemd-journal22:59:022
763721270,7sleep30-21swapper/320:54:053
1256021260,11sleep20-21swapper/200:34:302
4370212324,71sleep30-21swapper/300:09:213
2868721226,10sleep00-21swapper/020:15:550
28990212040,35sleep029069-21switchtime21:59:320
20934212015,53sleep00-21swapper/021:34:330
30891211717,86sleep330986-21perl20:24:223
1728521170,8sleep20-21swapper/221:24:122
4788211618,81sleep24846-21irqstats20:44:242
15399211517,77sleep215544-21/usr/sbin/munin22:59:352
8223211418,81sleep38306-21latency_hist22:39:043
11535211330,49sleep211554-21apt-get22:49:132
11535211330,49sleep211554-21apt-get22:49:132
25796211241,57sleep00-21swapper/021:49:310
25796211241,57sleep00-21swapper/021:49:310
19679211234,59sleep00-21swapper/019:49:060
15234211258,18sleep015300-21swap22:59:320
3260211111,86sleep33261-21sshd22:21:123
1721421117,69sleep0363-21snmpd23:05:180
32063211010,65sleep00-21swapper/020:29:030
2443521100,6sleep20-21swapper/220:04:052
1919211021,75sleep31984-21awk20:34:313
21085210922,68sleep221246-21tail21:34:352
17263210915,73sleep317285-21/usr/sbin/munin19:39:323
1165321086,92sleep00-21swapper/019:21:440
23774210618,69sleep123751-21apt-get21:44:271
23774210618,69sleep123751-21apt-get21:44:271
19226210621,67sleep119236-21netstat21:29:331
2197921049,81sleep222047-21df21:39:192
20925210323,47sleep220918-21apt-get23:19:172
9069210012,17sleep30-21swapper/322:39:333
3069121009,76sleep230744-21idleruntime23:49:452
27859210011,76sleep227909-21basename20:14:232
39329920,21sleep30-21swapper/322:14:053
39329920,21sleep30-21swapper/322:14:053
2535729942,40sleep00-21swapper/023:34:050
3191129817,66sleep131955-21ntpq22:09:271
3191129817,66sleep131955-21ntpq22:09:271
1599429818,62sleep316003-21unin-run23:04:043
2101229621,55sleep321078-21fschecks_time23:19:223
1338129640,44sleep013384-21cron19:29:030
2822729521,48sleep327647-21/usr/sbin/munin20:14:323
2222329526,13sleep00-21swapper/023:24:030
2289429441,38sleep017493-21kworker/0:123:24:280
1882129415,23sleep20-21swapper/219:44:312
1058629425,20sleep20-21swapper/222:44:332
1058629425,20sleep20-21swapper/222:44:332
1020429422,47sleep310351-21grep20:59:353
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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