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2026-09-12 - 01:17

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 Fri Sep 11, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
260322374465,37421sleep13599-21kworker/u8:311:03:541
27854269216,657sleep027916-21/usr/sbin/munin07:43:380
29660245213,397sleep129800-21awk07:48:401
2089236313,337sleep12113-21latency_hist09:48:101
2089236313,337sleep12113-21latency_hist09:48:101
256232336119,199sleep125689-21idleruntime09:18:301
25799228811,163sleep10-21swapper/111:03:131
79732286115,96sleep18053-21fschecks_time08:23:291
79732286115,96sleep18053-21fschecks_time08:23:291
89342273125,37sleep18542-21/usr/sbin/munin10:08:371
2800122699,246sleep228005-21ntpq11:08:352
4152226121,225sleep14216-21latency09:53:311
4152226121,225sleep14216-21latency09:53:311
1936122616,244sleep113860-1kworker/1:0H08:58:391
12283224425,199sleep112407-21latency_hist08:38:111
23878223059,150sleep123901-21modprobe10:58:081
32590222937,22sleep10-21swapper/111:23:331
10738222613,197sleep210742-21diskstats11:58:272
17013222467,56sleep117134-21sed10:33:411
17013222467,56sleep117134-21sed10:33:411
27159221315,179sleep227301-21latency_hist07:43:122
71892211173,23sleep07191-21sshd11:47:260
23200220820,155sleep10-21swapper/107:28:411
12902220647,82sleep112943-21ntpq08:38:361
30759220513,166sleep10-21swapper/111:18:281
21508220326,105sleep321651-21unixbench_singl09:03:423
24977220113,45sleep125121-21unixbench_singl07:33:461
20034220018,154sleep10-21swapper/107:18:401
2253219425,69sleep12361-21cat08:03:511
55221908,169sleep0619-21latency_hist09:43:120
55221908,169sleep0619-21latency_hist09:43:120
28680218614,150sleep128766-21latency_hist07:48:121
9876218415,149sleep19936-21sendmail_mailqu08:28:381
19283217837,59sleep119362-21date10:43:101
19283217837,59sleep119362-21date10:43:101
7905217714,142sleep17510-21/usr/sbin/munin11:48:321
4484217417,133sleep10-21swapper/108:13:111
17745216713,136sleep317824-21threads12:18:393
496216511,135sleep1527-21munin-run09:43:091
496216511,135sleep1527-21munin-run09:43:091
31372216521,124sleep10-21swapper/109:38:081
1097216567,47sleep11140-21gpgv08:03:101
16826216417,130sleep116829-21cron12:18:081
907921628,68sleep10-21swapper/111:53:211
2720721609,130sleep10-21swapper/109:23:301
15828216010,138sleep326043-21kworker/u8:307:08:243
15828216010,138sleep326043-21kworker/u8:307:08:243
31722215912,25sleep131789-21modprobe07:58:091
19091215915,108sleep119129-21ntp_kernel_pll_12:23:341
18383215513,32sleep118462-21xargs07:13:391
23141215414,125sleep123279-21latency_hist12:38:121
10378215414,26sleep10-21swapper/110:13:301
29881214813,98sleep130020-21sed09:33:121
29881214813,98sleep130020-21sed09:33:121
31208214322,92sleep231350-21grep07:53:422
13005214112,112sleep113134-21latency_hist10:23:111
24259213511,18sleep10-21swapper/109:13:331
27811213415,19sleep10-21swapper/111:08:301
444121338,16sleep10-21swapper/111:38:231
21551213399,15sleep10-21swapper/112:33:111
2091521338,17sleep10-21swapper/107:23:241
1840421337,55sleep11-21systemd12:23:091
17545213118,20sleep20-21swapper/212:18:342
4204213010,49sleep14203-21pluginstate11:38:101
4204213010,49sleep14203-21pluginstate11:38:101
1406021308,109sleep114062-21apt-get08:43:201
676521278,40sleep10-21swapper/108:18:371
29328212716,39sleep10-21swapper/111:13:311
3239621256,107sleep212872-1kworker/2:2H07:58:512
2228221257,40sleep1367-21snmpd10:52:311
1771321258,36sleep10-21swapper/108:53:341
1065621259,14sleep10-21swapper/111:58:221
545921238,37sleep10-21swapper/109:58:241
698821227,35sleep10-21swapper/110:03:201
9155212013,89sleep29166-21sshd11:53:262
1630621197,37sleep10-21swapper/108:48:581
598721177,35sleep10-21swapper/111:43:231
1904211765,38sleep12000-21sed11:28:461
1438021175,42sleep10-21swapper/110:26:341
2104121167,31sleep10-21swapper/109:03:321
10727211617,79sleep210874-21latency_hist08:33:122
27754211468,33sleep027879-21unixbench_singl09:23:420
574321125,95sleep10-21swapper/108:15:091
30436211219,67sleep030522-21grep11:18:100
2048121116,31sleep10-21swapper/110:44:191
1319521105,29sleep10-21swapper/112:04:361
2579221085,27sleep10-21swapper/107:38:141
11625210820,74sleep311761-21unixbench_multi08:33:413
2352321075,27sleep10-21swapper/109:12:081
1592521066,28sleep10-21swapper/110:31:271
1592521066,28sleep10-21swapper/110:31:271
1580021065,28sleep10-21swapper/107:08:181
1580021065,28sleep10-21swapper/107:08:181
1400721066,31sleep10-21swapper/112:08:271
346421045,27sleep10-21swapper/109:51:291
1229210419,65sleep31404-21latency_hist08:03:123
2707210311,78sleep02717-21grep09:48:370
14502210022,62sleep214518-21idleruntime-cro10:28:092
1973829818,66sleep00-21swapper/012:25:260
1137329819,49sleep311517-21unixbench_singl11:58:403
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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