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2026-08-27 - 15:59

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

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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  Intel
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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: ondemand
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot4s.osadl.org (updated Thu Aug 27, 2026 12:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4131622992112,206cyclictest0-21swapper/212:37:422
413161299152134,16cyclictest265444-21kthreadcore12:37:420
448302660,5sleep20-21swapper/208:57:382
413161299600,57cyclictest222143-21true11:55:000
4131617995950,7cyclictest18618-21apt-get08:28:271
4131617995948,8cyclictest275-21systemd-journal08:50:001
2451352590,5sleep20-21swapper/212:17:392
4131612995650,4cyclictest4110975-21kworker/u8:2+flush-8:007:20:000
4131617995445,6cyclictest132853-21latency_hist10:25:011
4131617995444,7cyclictest275-21systemd-journal09:05:011
1142702520,2sleep3575-21kworker/3:2-mm_percpu_wq10:07:383
4131617995144,5cyclictest58590-21cp09:10:011
1348812490,2sleep3481ktimers/310:27:413
4131612994632,12cyclictest4168645-21journal-offline07:47:320
4131612994629,15cyclictest4147538-21needreboot07:22:430
4131612994624,19cyclictest177399-21latency_hist11:10:010
4131612994535,8cyclictest275-21systemd-journal09:20:010
4131617994430,11cyclictest275-21systemd-journal07:38:281
4131612994428,14cyclictest182328-21systemd-run11:15:010
4131612994332,8cyclictest275-21systemd-journal08:30:010
4131612994315,19cyclictest0-21swapper/008:00:000
413161299422,24cyclictest0-21swapper/012:05:120
413161299421,29cyclictest573-21runrttasks09:04:580
413161299420,30cyclictest573-21runrttasks11:22:220
4131617994137,3cyclictest242341-21kworker/u8:2+events_unbound12:18:281
4131617994135,4cyclictest3676-21kworker/u8:1+events_unbound08:20:381
4131617994133,5cyclictest187501-21latency_hist11:20:011
4131612994127,12cyclictest0-21swapper/010:10:000
4131612994121,18cyclictest851-21mta-sts-daemon09:32:490
413161299411,29cyclictest573-21runrttasks09:29:580
413161299411,28cyclictest573-21runrttasks09:48:240
413161299410,39cyclictest1-21systemd08:57:270
413161299410,30cyclictest573-21runrttasks11:16:040
4131622994033,5cyclictest275-21systemd-journal08:32:442
4131617994033,5cyclictest275-21systemd-journal10:59:281
4131612994027,11cyclictest275-21systemd-journal09:43:010
413161299402,25cyclictest0-21swapper/010:38:560
4131622993928,9cyclictest252028-21awk12:25:002
4131617993931,6cyclictest162533-21latency_hist10:55:011
4131617993925,10cyclictest182396-21base6411:15:011
413161299392,24cyclictest0-21swapper/011:30:050
413161299391,28cyclictest573-21runrttasks10:29:410
4131622993829,7cyclictest4163214-21awk07:40:002
4131617993831,5cyclictest59166-21apt-get09:12:311
4131617993830,6cyclictest192917-21apt-get11:27:311
413161299388,23cyclictest573-21runrttasks09:09:070
413161299386,24cyclictest573-21runrttasks07:36:130
413161299382,25cyclictest573-21runrttasks07:50:210
413161299382,24cyclictest0-21swapper/008:39:210
413161299382,23cyclictest0-21swapper/009:11:480
4131612993821,15cyclictest4193523-21tr08:12:330
413161299381,27cyclictest573-21runrttasks10:30:420
413161299381,26cyclictest573-21runrttasks08:43:030
413161299381,26cyclictest573-21runrttasks08:43:030
413161299381,24cyclictest573-21runrttasks07:11:530
413161299381,23cyclictest573-21runrttasks10:16:210
413161299381,21cyclictest4188402-21basename08:07:330
413161299380,27cyclictest573-21runrttasks11:41:330
413161299380,25cyclictest573-21runrttasks09:35:360
413161299372,27cyclictest0-21swapper/010:02:320
413161299372,25cyclictest0-21swapper/010:57:020
413161299372,23cyclictest0-21swapper/010:53:130
413161299371,25cyclictest573-21runrttasks09:53:500
413161299371,25cyclictest573-21runrttasks07:40:100
413161299371,23cyclictest573-21runrttasks08:51:170
413161299370,27cyclictest573-21runrttasks11:37:190
413161299370,27cyclictest132734-21taskset10:23:350
413161299370,26cyclictest573-21runrttasks08:48:320
413161299370,24cyclictest573-21runrttasks11:26:400
413161299370,24cyclictest573-21runrttasks10:14:480
4131617993630,4cyclictest231523-21ntpq12:02:451
4131617993630,4cyclictest118026-21kworker/u8:3+flush-8:010:32:391
4131617993628,6cyclictest88323-21latency_hist09:40:011
4131617993628,6cyclictest4131486-21kworker/u8:3+events_unbound07:42:351
4131617993628,6cyclictest242341-21kworker/u8:2+flush-8:012:22:491
413161299362,23cyclictest0-21swapper/010:40:050
413161299362,23cyclictest0-21swapper/010:40:050
413161299360,23cyclictest573-21runrttasks11:00:270
413161299360,23cyclictest573-21runrttasks09:22:190
413161299360,23cyclictest573-21runrttasks08:28:140
413161299360,22cyclictest573-21runrttasks08:21:030
413161299360,22cyclictest573-21runrttasks07:33:440
4131617993532,2cyclictest0-21swapper/112:37:421
4131617993530,4cyclictest202576-21kworker/u8:1+flush-8:011:52:361
413161299353,17cyclictest0-21swapper/011:48:230
413161299352,22cyclictest0-21swapper/012:02:030
413161299352,22cyclictest0-21swapper/008:00:330
413161299352,17cyclictest0-21swapper/011:56:050
413161299351,22cyclictest573-21runrttasks12:32:570
413161299351,22cyclictest573-21runrttasks12:28:120
413161299351,21cyclictest573-21runrttasks10:48:270
413161299350,23cyclictest573-21runrttasks12:14:430
413161299350,22cyclictest573-21runrttasks12:17:240
413161299350,22cyclictest573-21runrttasks09:56:510
413161299350,22cyclictest573-21runrttasks07:25:570
4131622993425,7cyclictest49013-21apt-get09:02:312
4131617993429,4cyclictest242341-21kworker/u8:2+events_unbound12:32:371
4131617993428,5cyclictest22904-21kworker/u8:0+flush-8:009:42:451
4131617993428,4cyclictest222567-21apt-get11:57:311
4131617993426,6cyclictest4153722-21apt-get07:32:311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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