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2026-07-10 - 01:42

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 50 highest latencies:
System rackbslot7s.osadl.org (updated Thu Jul 09, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
265092701317,6984sleep124056-21kworker/1:211:28:251
26634237517,3730sleep012486-21kworker/0:108:03:270
15522211365,1118sleep213981-21kworker/2:210:52:252
15522211365,1118sleep213981-21kworker/2:210:52:252
4297240321,336sleep224429-1kworker/2:1H08:34:142
31518239336,342sleep331581-21/usr/sbin/munin11:44:183
1676423278,306sleep216770-21cat09:14:142
82532309142,27sleep20-21swapper/212:14:042
7809228911,265sleep17837-21sshd08:44:261
251742260123,120sleep225182-21latency_hist07:59:042
5373224129,191sleep25411-21fschecks_count12:04:192
16473222840,78sleep20-21swapper/210:54:312
16473222840,78sleep20-21swapper/210:54:312
14932222338,27sleep20-21swapper/207:24:282
14932222338,27sleep20-21swapper/207:24:282
20830222214,194sleep120909-21fschecks_time07:44:211
1407220240,116sleep21414-21modprobe10:09:012
12367219911,119sleep00-21swapper/007:15:250
12367219911,119sleep00-21swapper/007:15:250
4230219513,128sleep24365-21head10:14:352
30583219367,19sleep20-21swapper/211:39:332
15236218517,127sleep215301-21ls09:09:182
1263821847,12sleep20-21swapper/207:18:462
1263821847,12sleep20-21swapper/207:18:462
27453218213,20sleep00-21swapper/011:29:340
10787217910,112sleep210786-21munin-node07:14:062
1021521788,17sleep20-21swapper/212:19:172
14942217416,116sleep214990-21fschecks_count12:34:202
1429021749,150sleep214402-21cat09:04:342
17434217128,129sleep217571-21cut07:34:052
22142217061,29sleep20-21swapper/211:14:132
973721629,115sleep29876-21grep08:49:362
2526521605,11sleep20-21swapper/211:24:062
11388215945,55sleep20-21swapper/210:39:212
467021565,34sleep20-21swapper/211:59:562
467021565,34sleep20-21swapper/211:59:562
2359121568,135sleep223617-21cat07:54:042
22074215614,27sleep20-21swapper/209:29:322
920621517,110sleep29321-21date07:09:052
30706214927,95sleep330840-21grep11:39:343
19159214310,119sleep319228-21fschecks_time11:04:213
24049214014,110sleep124105-21/usr/sbin/munin07:54:231
3151721389,35sleep20-21swapper/211:44:172
12270213715,16sleep30-21swapper/312:24:323
1685421365,11sleep30-21swapper/310:54:363
1685421365,11sleep30-21swapper/310:54:363
20454213534,30sleep220472-21modprobe07:44:022
28874213111,49sleep0364-21snmpd09:53:080
28874213111,49sleep0364-21snmpd09:53:080
14099213110,70sleep20-21swapper/210:49:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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