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2026-06-14 - 19:04

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 Sun Jun 14, 2026 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
643524956,447sleep3363-21snmpd11:18:403
8078239911,374sleep38091-21sort09:42:463
2108623560,14sleep10-21swapper/108:38:061
147362348135,194sleep314780-21awk10:03:053
84023356,289sleep3878-21awk07:37:353
10204227510,243sleep310242-21fschecks_count11:32:533
10204227510,243sleep310242-21fschecks_count11:32:533
10379224015,202sleep210399-21cut11:32:562
10379224015,202sleep210399-21cut11:32:562
30283222416,170sleep330434-21latency_hist07:27:383
2559822209,196sleep125681-21tune2fs10:37:561
8641221940,158sleep3225-21systemd-journal08:02:353
23110221931,171sleep023139-21latency_hist07:07:360
23110221931,171sleep023139-21latency_hist07:07:360
7295221614,187sleep07379-21cat11:22:570
7295221614,187sleep07379-21cat11:22:570
3219221617,177sleep30-21swapper/311:08:063
32299220911,69sleep332403-21timerandwakeup10:58:053
11750220924,164sleep111821-21grep09:53:051
28797220823,172sleep328772-21/usr/sbin/munin12:32:503
24207220487,37sleep324280-21switchtime10:33:053
14870219215,22sleep014875-21diskstats11:47:520
10322218910,166sleep310450-21cat09:48:073
744021887,166sleep3363-21snmpd11:23:003
744021887,166sleep3363-21snmpd11:23:003
30459218515,155sleep330474-21acpi07:27:463
24549217721,95sleep30-21swapper/312:18:003
24549217721,95sleep30-21swapper/312:18:003
1249521777,21sleep30-21swapper/308:13:053
4377217616,105sleep30-21swapper/311:13:033
26097217311,146sleep026142-21ntpq12:22:580
19429217010,18sleep30-21swapper/308:34:093
710216810,146sleep3755-21awk09:18:023
18289216534,94sleep318339-21ntp_kernel_pll_11:58:013
109672165130,21sleep311032-21awk08:08:043
7018216415,15sleep30-21swapper/309:38:013
2246921629,139sleep322588-21cat08:43:053
24676216112,112sleep324723-21find07:12:363
1567021618,139sleep315713-21latency08:22:583
28708215820,28sleep00-21swapper/007:22:380
16146215815,130sleep316159-21kernelversion10:07:573
15114215719,59sleep115162-21unin-run08:22:361
2701221569,23sleep30-21swapper/312:27:373
6737215418,76sleep26739-21cron11:22:352
3642215316,122sleep13671-21latency_hist11:12:361
2123721539,104sleep321391-21awk10:23:083
21620215113,86sleep30-21swapper/308:42:373
6438214917,112sleep00-21swapper/007:53:070
2909214516,111sleep30-21swapper/307:42:573
24522214519,110sleep224547-21netstat12:17:592
24522214519,110sleep224547-21netstat12:17:592
27600214016,86sleep30-21swapper/310:43:063
153621408,121sleep31577-21ntpq07:38:003
2875221316,87sleep30-21swapper/310:47:553
1478821316,21sleep30-21swapper/311:47:473
22591213020,87sleep00-21swapper/008:43:060
19379213014,22sleep30-21swapper/310:17:593
31760212910,17sleep30-21swapper/309:13:063
136821299,47sleep31442-21cat11:03:053
27243212710,78sleep30-21swapper/307:17:573
13243212790,18sleep30-21swapper/311:42:513
1501621266,12sleep30-21swapper/308:21:213
14084212610,83sleep314093-21munin-run10:02:363
968321248,81sleep3363-21snmpd11:30:393
968321248,81sleep3363-21snmpd11:30:393
21496212018,17sleep30-21swapper/312:08:033
26834211916,85sleep2309-21rs:main2
6351211711,75sleep30-21swapper/307:53:063
2654021178,77sleep30-21swapper/308:57:473
11943211614,82sleep311177-21/usr/sbin/munin09:53:073
22562211510,90sleep322603-21grep10:28:003
17398211584,19sleep317408-21find10:12:463
20188211322,30sleep320339-21unixbench_singl12:03:063
4159211120,73sleep10-21swapper/111:12:571
24066211074,22sleep324195-21ls08:48:063
25673210913,82sleep225676-21acpi12:22:432
30136210611,81sleep130243-21latency_hist12:37:361
18280210626,64sleep118399-21cat08:32:371
3065721047,62sleep30-21swapper/309:09:143
2351210410,60sleep32389-21processes09:23:033
31453210310,54sleep30-21swapper/310:57:363
1255210313,68sleep1769-21/usr/sbin/munin11:03:031
2857221027,22sleep30-21swapper/312:32:383
4980210118,42sleep20-21swapper/209:32:472
27966210120,64sleep228108-21awk12:28:042
18656210016,67sleep218798-21grep11:58:082
290572995,83sleep30-21swapper/309:03:453
249612998,57sleep324958-21apt-get08:52:463
105729921,22sleep20-21swapper/209:18:092
99802987,14sleep30-21swapper/308:04:533
129522989,56sleep312983-21munin-run11:42:343
3212129723,50sleep232160-21cut07:32:542
1587229714,70sleep115931-21processes08:23:041
1300229715,65sleep113043-21cut11:42:361
50582967,16sleep30-21swapper/309:32:523
251352966,14sleep30-21swapper/307:12:403
2471629614,69sleep124726-21pluginstate08:52:361
3009129531,32sleep00-21swapper/010:52:450
2664229510,70sleep126644-21sshd07:15:081
237702957,12sleep00-21swapper/007:08:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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