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2026-06-15 - 01:33

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, 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.

Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rackcslot7s.osadl.org (updated Sun Jun 14, 2026 12:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
369736121260,4sleep13697363-21latency_hist11:35:011
368893221260,3sleep20-21swapper/211:10:132
364833621030,2sleep33056-21PK-Backend09:15:123
366192021010,4sleep10-21swapper/109:55:011
360298028039,13sleep10-21swapper/107:07:511
360291627255,12sleep00-21swapper/007:07:020
36557912680,4sleep33056-21PK-Backend09:35:173
360243326845,15sleep20-21swapper/207:05:242
360300326344,13sleep30-21swapper/307:08:093
37114412560,9sleep126-21ksoftirqd/112:15:111
36330952550,3sleep33633094-21wc08:30:223
36782722480,2sleep20-21swapper/210:40:132
36887312380,3sleep13056-21PK-Backend11:10:111
36947992340,3sleep20-21swapper/211:25:192
3603291993012,5cyclictest3626996-21sed08:15:012
3603291993010,5cyclictest3638047-21ls08:45:172
3603291993010,5cyclictest3638047-21ls08:45:162
3603291992910,5cyclictest3677687-21dpkg10:40:012
36826912280,4chrt0-21swapper/010:50:210
360329199289,7cyclictest3652085-21cat09:25:162
360329199282,5cyclictest0-21swapper/212:25:102
3603291992810,4cyclictest3627694-21sed08:15:162
139099280,4rtkit-daemon1389-21rtkit-daemon12:30:283
360329199272,7cyclictest3609443-21apt07:25:112
360329199270,12cyclictest3635901-21grep08:40:132
360329099271,7cyclictest3670924-21apt-get10:20:041
3603290992713,3cyclictest3636466-21netstat08:40:171
139099270,4rtkit-daemon1389-21rtkit-daemon12:19:183
139099270,4rtkit-daemon1389-21rtkit-daemon10:48:313
3603295992613,11cyclictest3660286-21awk09:50:113
360329199268,3cyclictest3687861-21timerwakeupswit11:05:222
360329199267,5cyclictest3620898-21cat07:55:222
360329199261,6cyclictest3641189-21apt-get08:55:032
3603291992611,3cyclictest1095-21runrttasks08:22:162
3603291992610,4cyclictest3671566-21sed10:20:162
360329099269,4cyclictest1095-21runrttasks09:20:211
360329099261,8cyclictest1-21systemd10:37:411
3603290992610,4cyclictest3609259-21wc07:25:011
360329199258,3cyclictest3714053-21timerandwakeup12:20:212
360329199252,7cyclictest3630568-21apt08:25:122
360329199250,9cyclictest3659418-21taskset09:45:202
360329199250,11cyclictest3613580-21cut07:35:172
360329099256,3cyclictest0-21swapper/111:55:201
360329099253,7cyclictest3668962-21apt10:15:111
3603290992516,6cyclictest3704139-21cron11:55:011
3603290992513,2cyclictest3613767-21sensors_temp07:35:191
3603290992512,3cyclictest3678050-21apt-config10:40:011
360329099251,10cyclictest3623638-21apt08:05:141
3603290992510,4cyclictest3639653-21basename08:50:151
3603290992510,4cyclictest3630470-21sed08:25:021
139099250,3rtkit-daemon1389-21rtkit-daemon07:10:491
360329599249,13cyclictest3662151-21grep09:55:133
360329199248,3cyclictest3683188-21latency_hist10:55:002
360329199248,3cyclictest0-21swapper/209:50:142
360329199246,5cyclictest3634758-21awk08:35:182
360329199243,3cyclictest3698465-21timerandwakeup11:35:212
360329199240,9cyclictest3701695-21ntp_states11:45:192
360329199240,3cyclictest3607178-21latency_hist07:20:002
360329199240,18cyclictest0-21swapper/210:46:082
360329099248,14cyclictest0-21swapper/111:15:171
360329099241,9cyclictest3700685-21idleruntime-cro11:44:591
360329099240,19cyclictest3056-21PK-Backend12:12:161
360329199237,4cyclictest3604501-21expr07:10:202
360329199231,7cyclictest3662696-21needreboot09:55:182
360329199231,6cyclictest3683365-21apt10:55:102
3603291992310,3cyclictest1095-21runrttasks07:20:022
360329199230,1cyclictest0-21swapper/212:37:412
360329099239,3cyclictest0-21swapper/109:40:171
360329099231,8cyclictest3655952-21python309:35:201
360329099231,6cyclictest3708748-21sshd12:05:201
3603290992316,6cyclictest3056-21PK-Backend08:19:501
360328599230,22cyclictest0-21swapper/009:15:120
36098542220,4sleep10-21swapper/107:25:151
3603295992220,1cyclictest3056-21PK-Backend09:20:323
3603295992217,3cyclictest3686561-21sh11:05:003
360329199228,3cyclictest978-21snmpd11:04:552
360329199228,3cyclictest3657764-21xargs09:40:212
3603291992220,1cyclictest0-21swapper/210:30:192
3603291992217,4cyclictest0-21swapper/209:07:402
3603291992210,3cyclictest886-21NetworkManager07:47:402
3603290992218,3cyclictest3056-21PK-Backend08:56:131
3603290992213,7cyclictest436-20systemd-journal08:05:001
3603285992220,1cyclictest0-21swapper/011:47:270
3603285992220,1cyclictest0-21swapper/011:44:020
3603285992220,1cyclictest0-21swapper/010:48:050
3603285992215,6cyclictest3708747-21python312:05:200
360328599220,20cyclictest0-21swapper/009:44:580
139099220,4rtkit-daemon1389-21rtkit-daemon07:49:030
3603295992118,2cyclictest3056-21PK-Backend07:42:573
3603295992113,6cyclictest3693750-21cron11:25:003
360329599210,5cyclictest141rcu_preempt10:09:273
360329599210,1cyclictest3056-21PK-Backend07:28:183
360329599210,19cyclictest3056-21PK-Backend11:45:033
360329599210,19cyclictest3056-21PK-Backend10:17:573
360329599210,19cyclictest3056-21PK-Backend10:13:453
360329599210,19cyclictest3056-21PK-Backend08:43:073
360329599210,19cyclictest3056-21PK-Backend07:36:083
3603291992119,1cyclictest3056-21PK-Backend07:40:202
3603291992119,1cyclictest0-21swapper/212:16:322
3603291992119,1cyclictest0-21swapper/211:57:392
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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