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2025-12-03 - 19:16

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 Dec 03, 2025 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
218492385719,3818sleep112944-21kworker/u8:107:08:211
1379727588,676sleep013844-21ntpq08:24:080
22784249918,466sleep322823-21ntpq10:33:253
20263237110,37sleep020407-21grep12:08:320
3591234916,315sleep23600-21/usr/sbin/munin07:53:202
22482231336,260sleep00-21swapper/010:33:180
6011227792,168sleep06076-21sendmail_mailqu11:23:290
31114227210,217sleep031160-21fschecks_time09:18:230
31114227210,217sleep031160-21fschecks_time09:18:230
19772226795,144sleep00-21swapper/008:43:220
777622565,167sleep00-21swapper/008:06:390
777622565,167sleep00-21swapper/008:06:390
28630223016,190sleep028788-21unixbench_multi09:09:390
28630223016,190sleep028788-21unixbench_multi09:09:390
15307222751,38sleep015468-21unixbench_multi10:09:030
21611222416,99sleep021660-21apt-key07:08:080
9365222321,185sleep09394-21idleruntime-cro09:53:000
10812221514,176sleep010891-21/usr/sbin/munin11:38:320
10812221514,176sleep010891-21/usr/sbin/munin11:38:320
20321221315,180sleep120410-21switchtime07:03:321
1849422025,13sleep00-21swapper/008:38:290
10417220021,156sleep010560-21unixbench_singl09:53:440
19952219711,166sleep00-21swapper/007:03:230
6382218934,19sleep00-21swapper/009:43:020
8663218811,157sleep08744-21cut08:08:290
21541217921,15sleep20-21swapper/210:28:442
8731217511,16sleep30-21swapper/311:33:223
26373217527,53sleep00-21swapper/007:23:020
269821719,149sleep02728-21kernelversion11:13:240
2478021719,52sleep024798-21munin-run07:18:010
11413217010,144sleep011456-21idleruntime09:58:210
30037216812,61sleep00-21swapper/009:13:380
30037216812,61sleep00-21swapper/009:13:380
1715216810,14sleep30-21swapper/309:28:193
504721667,81sleep05067-21apt-get07:58:110
2496521658,142sleep025048-21mailstats12:23:300
2775621637,13sleep30-21swapper/309:08:043
2775621637,13sleep30-21swapper/309:08:043
12547216321,11sleep00-21swapper/008:19:390
488521626,11sleep00-21swapper/011:18:330
4546215967,48sleep04643-21sort09:38:010
2418421575,11sleep00-21swapper/012:22:580
2137921569,86sleep0195-21jbd2/mmcblk2p2-12:13:160
1854221567,48sleep00-21swapper/012:03:310
31968215517,16sleep00-21swapper/007:38:320
31968215517,16sleep00-21swapper/007:38:320
1754621558,136sleep05666-21snmpd08:35:420
942215219,67sleep00-21swapper/007:43:290
1113921475,32sleep00-21swapper/008:16:280
2825121465,11sleep00-21swapper/010:52:080
2825121465,11sleep00-21swapper/010:52:080
1586721455,10sleep00-21swapper/011:54:180
23526214411,102sleep00-21swapper/008:53:310
180721435,10sleep00-21swapper/011:09:120
180721435,10sleep00-21swapper/011:09:120
961021425,10sleep00-21swapper/011:34:030
7075214217,44sleep00-21swapper/011:28:140
2573921425,10sleep00-21swapper/009:02:440
20260214023,90sleep320417-21unixbench_multi08:43:333
20828213911,48sleep00-21swapper/010:28:130
3194213826,88sleep1225-21systemd-journal07:52:591
24959213818,102sleep324967-21ntpq08:58:273
19271213818,101sleep00-21swapper/010:23:160
3266021376,13sleep30-21swapper/311:03:333
2974121369,55sleep029744-21grep07:33:150
3266721345,32sleep00-21swapper/011:03:390
2473213310,39sleep00-21swapper/007:48:300
451521318,48sleep05666-21snmpd07:54:360
26750213118,91sleep226884-21unixbench_singl12:28:332
30133213017,95sleep130265-21unixbench_multi09:13:391
30133213017,95sleep130265-21unixbench_multi09:13:391
17561212822,65sleep00-21swapper/012:01:130
14255212810,96sleep014408-21latency_hist10:08:020
14255212810,96sleep014408-21latency_hist10:08:020
258021256,39sleep00-21swapper/009:28:530
31052212225,20sleep30-21swapper/307:38:033
20113212217,92sleep320142-21nfs4_client07:03:263
7814212011,96sleep07844-21awk09:47:590
2548921208,36sleep00-21swapper/010:43:110
2548921208,36sleep00-21swapper/010:43:110
2144021207,31sleep00-21swapper/008:48:180
1471821168,32sleep00-21swapper/008:28:030
27693211335,27sleep00-21swapper/007:25:440
14564211321,74sleep214588-21munin-run11:52:592
2726521125,94sleep00-21swapper/012:32:430
1874321125,95sleep00-21swapper/010:19:570
17992211215,79sleep218059-21df12:03:172
14644211211,81sleep00-21swapper/011:53:010
25667211015,78sleep125725-21idleruntime10:43:201
25667211015,78sleep125725-21idleruntime10:43:201
21381211019,68sleep121382-21cpu12:13:171
1663421105,11sleep00-21swapper/010:13:270
12797211031,27sleep00-21swapper/011:45:100
5283210814,31sleep25339-21irqstats07:58:212
29196210830,28sleep00-21swapper/007:30:080
27071210823,11sleep00-21swapper/009:04:460
12228210722,70sleep112350-21sed08:18:311
30661210616,27sleep30-21swapper/310:58:293
25002210621,12sleep00-21swapper/010:40:120
25002210621,12sleep00-21swapper/010:40:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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