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2026-03-15 - 11:35

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 Sun Mar 15, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7380243316,4312sleep027993-21kworker/0:120:04:290
20777230985,3081sleep119100-21kworker/1:122:32:301
26577280521,764sleep326622-21/usr/sbin/munin19:23:343
9926277617,742sleep09959-21/usr/sbin/munin20:13:340
9926277617,742sleep09959-21/usr/sbin/munin20:13:340
14496276915,738sleep214503-21/usr/sbin/munin20:28:262
24893264115,607sleep324924-21/usr/sbin/munin19:18:293
1821725068,484sleep118242-21modprobe00:08:071
162242409330,64sleep116240-21sshd20:33:291
648923408,295sleep16522-21grep20:03:251
30608233527,295sleep130705-21date19:38:101
4229228712,261sleep34240-21ntpq21:38:333
14992227091,99sleep115016-21apt-key23:58:101
22112226910,243sleep022152-21ps00:18:360
5038224063,155sleep15048-21modprobe21:43:071
26264222816,189sleep126325-21processes22:48:371
26264222816,189sleep126325-21processes22:48:371
30846222415,191sleep230877-21nfs_client23:03:322
1521219520,94sleep10-21swapper/123:13:361
1521219520,94sleep10-21swapper/123:13:361
1155821858,158sleep111691-21latency_hist22:03:101
30649218382,49sleep10-21swapper/121:18:361
2273121808,160sleep313441-21snmpd00:20:533
15565218010,68sleep10-21swapper/122:13:401
24515217819,142sleep224576-21/usr/sbin/munin22:43:292
18104217717,35sleep20-21swapper/222:23:262
21209216717,134sleep121243-21fschecks_count22:33:261
19332216743,91sleep119406-21latency_hist22:28:101
24303216672,77sleep10-21swapper/120:58:371
10956216310,141sleep111028-21mailstats23:43:361
28891216214,40sleep10-21swapper/122:58:181
12970216130,84sleep113062-21fschecks_time20:23:281
31491216059,63sleep10-21swapper/119:38:381
12371215451,64sleep10-21swapper/122:03:381
1634821519,131sleep116353-21run-parts23:59:071
25940214818,106sleep10-21swapper/121:03:381
8154214224,100sleep38193-21/usr/sbin/munin20:08:283
315921417,120sleep00-21swapper/021:34:140
22700213913,112sleep022769-21df22:38:220
22275213917,97sleep30-21swapper/320:53:263
7064213715,39sleep10-21swapper/121:48:281
30938213715,99sleep231029-21cut19:38:272
2024121370,24sleep120861-21cyclictest00:13:271
2145121360,5sleep30-21swapper/319:08:313
26382213414,106sleep026456-21fschecks_time00:33:260
2647621277,56sleep10-21swapper/119:23:321
25036212515,24sleep025066-21munin-run21:03:080
20917212510,89sleep10-21swapper/120:48:321
30450212431,81sleep130470-21dpkg23:03:191
30394212214,92sleep330440-21ntpq21:18:303
15729212211,48sleep115781-21sort20:33:091
22659212110,94sleep022165-21/usr/sbin/munin20:53:350
8132211911,90sleep08176-21systemd-run21:53:070
26098211911,75sleep00-21swapper/022:48:320
26098211911,75sleep00-21swapper/022:48:320
23405211615,85sleep323414-21needreboot19:13:323
4478211511,17sleep00-21swapper/023:23:290
2474821158,17sleep10-21swapper/100:28:221
9976211323,67sleep310121-21grep21:58:113
9976211323,67sleep310121-21grep21:58:113
25183211312,83sleep025202-21ntp_states00:28:330
17519211332,51sleep217538-21apt-get20:38:192
15968211114,81sleep316018-21cpuspeed20:33:233
28519211011,72sleep10-21swapper/121:13:271
15496211016,79sleep315502-21diskstats23:58:373
10249210917,74sleep210224-21apt-get21:58:312
29018210812,32sleep129036-21latency_hist19:33:091
2073921085,11sleep00-21swapper/019:07:400
23959210715,73sleep123977-21awk22:43:081
32266210527,66sleep132298-21irqstats23:08:321
32153210514,78sleep032193-21cut19:43:090
29285210515,76sleep229315-21awk22:58:312
892721029,80sleep19006-21mailstats21:53:371
892721029,80sleep19006-21mailstats21:53:371
5243210218,10sleep10-21swapper/123:24:431
26666210210,19sleep10-21swapper/100:33:311
24184210014,10sleep10-21swapper/100:24:391
13328210031,55sleep113417-21ls23:53:091
42632995,11sleep10-21swapper/119:57:441
3266229929,55sleep132718-21sed19:43:311
109332998,13sleep00-21swapper/023:43:350
1023029717,67sleep210334-21cat23:43:092
2246429413,64sleep022593-21latency_hist22:38:100
224122947,24sleep122481-21latency_hist19:13:101
935129315,62sleep19540-21dpkg20:13:101
195502928,17sleep10-21swapper/120:43:351
482029114,54sleep34317-21apt-get19:58:193
3156929120,15sleep10-21swapper/121:23:241
185229116,20sleep00-21swapper/019:48:300
185229116,20sleep00-21swapper/019:48:300
2559629031,37sleep30-21swapper/322:48:103
2889628924,48sleep228920-21proc_pri21:13:362
274528951,24sleep12775-21munin-run19:53:081
274528951,24sleep12775-21munin-run19:53:081
2499528916,18sleep10-21swapper/119:18:311
2737128826,29sleep30-21swapper/321:08:363
2072328821,46sleep220787-21fschecks_time20:48:282
1865428810,62sleep10-21swapper/100:08:281
792328736,31sleep10-21swapper/123:33:391
579928719,14sleep10-21swapper/123:28:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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