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2026-08-20 - 17:28

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 Aug 20, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
211992105815,1026sleep221266-21df07:54:442
30618256710,540sleep230627-21/usr/sbin/munin10:05:022
12154247114,439sleep212193-21ntpq12:34:552
7625243210,408sleep17626-21sshd10:36:221
16172232427,274sleep116327-21grep09:19:591
17183228046,219sleep117250-21idleruntime09:24:481
3211227095,161sleep13239-21grep10:24:271
7348225712,229sleep27489-21awk10:35:022
28642224170,87sleep10-21swapper/109:59:561
182922284,212sleep0451-21kworker/0:212:00:340
182922284,212sleep0451-21kworker/0:212:00:340
26403222441,106sleep10-21swapper/109:54:311
23433222417,184sleep123549-21timerwakeupswit08:00:001
23227221231,119sleep123248-21apt-get09:44:381
18117221013,107sleep10-21swapper/111:09:531
11705219826,84sleep10-21swapper/110:49:511
14791219711,169sleep114834-21fschecks_time10:59:481
18752219621,153sleep10-21swapper/107:44:581
5208218668,30sleep10-21swapper/108:44:591
4431218615,106sleep14471-21ps12:09:551
29277218411,161sleep029370-21cut08:19:500
1323021800,48sleep013231-21unixbench_singl09:10:000
5298217826,135sleep25358-21/usr/sbin/munin07:04:462
27565217792,70sleep127630-21awk11:39:561
19883217780,58sleep16556-21cyclictest07:49:471
30465217238,113sleep130615-21unixbench_singl10:05:011
9156217092,66sleep19235-21awk12:24:571
8451216911,136sleep10-21swapper/110:39:501
3259216717,84sleep10-21swapper/108:39:581
32374216411,90sleep10-21swapper/108:29:521
20136216117,94sleep120149-21cpu09:34:451
20136216117,94sleep120149-21cpu09:34:451
20321216044,105sleep120324-21modprobe11:16:271
11020216069,77sleep10-21swapper/109:04:571
1716215343,94sleep11854-21latency_hist10:19:311
8256214928,106sleep00-21swapper/010:39:450
1804214846,81sleep10-21swapper/112:00:231
1804214846,81sleep10-21swapper/112:00:231
1404221428,122sleep0367-21snmpd10:55:470
27213214016,49sleep027329-21timerwakeupswit09:54:590
31993213720,46sleep232134-21grep10:09:592
13881213642,70sleep10-21swapper/109:14:381
7066213351,17sleep10-21swapper/107:09:491
23777213369,46sleep10-21swapper/111:29:311
18954213245,24sleep118559-21/usr/sbin/munin09:29:521
18954213245,24sleep118559-21/usr/sbin/munin09:29:521
20963212713,100sleep020999-21fschecks_count11:19:450
22664212634,19sleep10-21swapper/111:24:511
15826212635,26sleep10-21swapper/107:35:011
2955212315,92sleep03024-21sensors_temp12:04:580
32356212278,29sleep132488-21timerwakeupswit11:54:581
19268212117,85sleep019413-21unixbench_multi09:29:590
19268212117,85sleep019413-21unixbench_multi09:29:590
16659212120,25sleep10-21swapper/111:04:571
22606211814,81sleep021682-21/usr/sbin/munin09:40:010
22606211814,81sleep021682-21/usr/sbin/munin09:40:010
12220211811,95sleep112259-21wc12:34:581
13671211719,81sleep10-21swapper/109:14:301
14688211413,49sleep10-21swapper/107:34:281
14688211413,49sleep10-21swapper/107:34:281
11953211413,26sleep311962-21df_inode07:24:453
11953211413,26sleep311962-21df_inode07:24:453
10802211412,70sleep00-21swapper/009:04:440
21876211310,76sleep10-21swapper/107:55:001
5026211110,24sleep10-21swapper/110:29:401
556021085,90sleep00-21swapper/008:49:090
17748210816,46sleep30-21swapper/311:09:433
25004210711,82sleep324528-21apt-get09:49:333
27179210614,78sleep127283-21latency_hist08:14:301
250021067,50sleep10-21swapper/112:04:471
20879210610,33sleep10-21swapper/111:19:421
20328210621,61sleep320461-21sed07:49:573
5610210212,75sleep35709-21cut12:14:453
31497210212,40sleep131528-21latency_hist11:54:291
24997210212,75sleep225115-21cat08:05:022
30951210128,18sleep10-21swapper/108:24:521
1193210029,13sleep10-21swapper/108:34:411
35012996,13sleep00-21swapper/010:24:430
464629816,67sleep04755-21cat12:09:580
2323729813,65sleep223279-21wc07:59:572
2887729718,53sleep029024-21grep09:59:590
254329719,20sleep30-21swapper/308:39:313
2476029624,15sleep10-21swapper/108:04:571
45302956,11sleep10-21swapper/110:26:291
2556929510,71sleep10-21swapper/111:34:431
163629513,58sleep31671-21/usr/sbin/munin10:19:293
1525429511,65sleep015361-21latency_hist09:19:300
60302946,13sleep00-21swapper/008:49:500
3219929420,55sleep231713-21/usr/sbin/munin11:54:552
2957529418,62sleep329648-21/usr/sbin/munin08:19:573
269482949,65sleep10-21swapper/109:54:521
1073829411,64sleep310783-21/usr/sbin/munin07:19:533
1011129113,66sleep110149-21fschecks_time10:45:031
894429012,13sleep10-21swapper/107:14:501
786429024,43sleep37912-21sendmail10:39:273
1432629034,39sleep114357-21cron10:59:281
1308629019,47sleep313226-21grep09:10:003
1031929018,39sleep10-21swapper/109:04:291
770228921,16sleep10-21swapper/108:54:521
711228913,54sleep00-21swapper/012:19:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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