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2026-06-17 - 18:52

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 Wed Jun 17, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
256242368316,3655sleep224943-21kworker/2:112:07:402
46662273010,2707sleep13149-21kworker/1:107:36:011
126712168210,1660sleep132052-21kworker/1:011:25:401
9046299615,964sleep19075-21users11:12:561
1661924449,418sleep216645-21ntpq11:37:482
2289523299,306sleep122942-21ntpq08:32:491
161052299103,179sleep116109-21diskstats08:12:431
161052299103,179sleep116109-21diskstats08:12:431
9757226919,232sleep09488-21latency_hist11:17:270
6355224819,207sleep3307-21in:imuxsock07:42:253
18008224667,79sleep30-21swapper/311:42:463
21271222613,198sleep11974-21kworker/u8:011:52:491
8144222344,51sleep30-21swapper/311:12:343
25509221917,120sleep327553-21cyclictest10:22:563
25509221917,120sleep327553-21cyclictest10:22:563
25002219121,54sleep30-21swapper/310:54:053
4192220745,110sleep34319-21timerwakeupswit10:57:573
23062220548,74sleep30-21swapper/311:57:563
29512220114,28sleep30-21swapper/307:12:333
12442219415,72sleep30-21swapper/309:42:433
1678021908,170sleep316861-21cat11:37:543
11302219066,109sleep311369-21mailstats09:37:513
11302219066,109sleep311369-21mailstats09:37:513
3250221750,67sleep327553-21cyclictest10:47:263
28457217559,98sleep328542-21latency_hist12:17:263
1533217264,81sleep30-21swapper/309:07:433
1533217264,81sleep30-21swapper/309:07:433
20607216650,89sleep30-21swapper/310:07:503
17978216376,73sleep318043-21grep08:17:503
16488216261,81sleep30-21swapper/308:12:533
16488216261,81sleep30-21swapper/308:12:533
165821607,85sleep30-21swapper/312:32:563
165821607,85sleep30-21swapper/312:32:563
11809215814,129sleep011821-21kernelversion11:22:450
1874621576,131sleep00-21swapper/008:18:030
17534215619,116sleep00-21swapper/011:42:270
5701215524,111sleep15783-21cat07:37:541
27166215016,120sleep227168-21cpu08:47:402
27166215016,120sleep227168-21cpu08:47:402
32388214647,79sleep30-21swapper/312:27:523
4954214510,61sleep30-21swapper/309:17:493
28930214512,114sleep028448-21apt-get08:52:340
28020214419,103sleep30-21swapper/310:32:453
29301214135,89sleep30-21swapper/312:17:543
10570214055,18sleep30-21swapper/309:37:273
3075213925,92sleep03090-21cut09:12:410
26306213111,17sleep00-21swapper/007:02:530
30185212916,83sleep230323-21grep10:37:532
23364212915,88sleep30-21swapper/310:17:433
24476212869,15sleep30-21swapper/312:02:533
19935212543,18sleep320058-21timerandwakeup11:47:553
24152212336,43sleep30-21swapper/308:37:443
29875212132,76sleep3363-21snmpd08:54:313
31055212015,19sleep00-21swapper/010:42:390
20957212045,14sleep30-21swapper/311:52:433
10010211911,95sleep310032-21tr07:52:463
25034211715,81sleep025084-21/usr/sbin/munin10:22:450
25034211715,81sleep025084-21/usr/sbin/munin10:22:450
16704211724,66sleep216853-21unixbench_multi08:12:562
16704211724,66sleep216853-21unixbench_multi08:12:562
11320211713,89sleep011369-21awk07:57:400
11000211716,80sleep111040-21awk07:57:251
2724221168,86sleep00-21swapper/008:47:420
2724221168,86sleep00-21swapper/008:47:420
1488121167,39sleep314883-21ntp_states08:07:523
12592211618,79sleep112634-21true08:02:251
713221148,70sleep37220-21grep11:07:543
31693211216,48sleep30-21swapper/307:17:493
24459211220,74sleep123979-21/usr/sbin/munin12:02:511
1405921117,95sleep00-21swapper/008:06:240
528721107,37sleep30-21swapper/311:02:453
2778321107,25sleep30-21swapper/307:07:403
2778321107,25sleep30-21swapper/307:07:403
26766211017,52sleep30-21swapper/310:27:493
2386321070,6sleep20-21swapper/212:02:262
1412210724,61sleep01441-21grep10:52:240
1412210724,61sleep01441-21grep10:52:240
21441210613,30sleep221450-21munin-run10:12:262
1516721069,83sleep315188-21awk09:52:243
10590210627,17sleep30-21swapper/311:18:073
5163210522,61sleep15218-21fschecks_count11:02:431
30836210512,75sleep30-21swapper/310:42:263
30417210514,75sleep130570-21awk07:12:551
2295221059,73sleep30-21swapper/308:32:513
13817210314,67sleep213959-21sed11:27:552
6619210224,51sleep26638-21apt-get07:42:362
32306210218,22sleep00-21swapper/009:02:360
32306210218,22sleep00-21swapper/009:02:360
30912210217,64sleep230941-21/usr/sbin/munin08:57:492
27529210214,73sleep227634-21latency_hist07:07:272
20704210146,19sleep320706-21munin-run08:27:263
11174210115,69sleep211203-21/usr/sbin/munin09:37:462
11174210115,69sleep211203-21/usr/sbin/munin09:37:462
29205210027,50sleep229210-21grep08:54:182
172621009,19sleep30-21swapper/307:27:263
40532995,12sleep30-21swapper/309:14:463
35129917,63sleep132304-21/usr/sbin/munin09:03:011
35129917,63sleep132304-21/usr/sbin/munin09:03:011
3263229811,70sleep032737-21latency_hist07:22:270
204122987,13sleep10-21swapper/110:07:441
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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