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2025-12-29 - 04:41

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 Mon Dec 29, 2025 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6728243118,209sleep26779-21sort21:14:252
6728243118,209sleep26779-21sort21:14:252
359724317,404sleep217249-21kworker/u8:321:04:162
15348229214,121sleep215401-21cpuspeed23:24:262
296592246127,100sleep229673-21fschecks_count20:44:252
296592246127,100sleep229673-21fschecks_count20:44:252
30590223472,19sleep20-21swapper/222:29:242
12959222697,107sleep20-21swapper/223:14:372
12959222697,107sleep20-21swapper/223:14:372
941622160,6sleep20-21swapper/223:04:272
941622160,6sleep20-21swapper/223:04:272
19215221315,89sleep20-21swapper/221:54:312
13301221340,89sleep20-21swapper/219:54:172
32435220610,183sleep232496-21fschecks_time22:35:302
2681921949,170sleep226941-21timerandwakeup23:59:382
15846219034,112sleep215985-21unixbench_multi19:59:592
10759218477,26sleep20-21swapper/223:09:252
32514218276,23sleep20-21swapper/200:19:252
32514218276,23sleep20-21swapper/200:19:252
356218017,104sleep20-21swapper/220:54:262
235121759,16sleep00-21swapper/019:19:350
17291217417,143sleep017327-21idleruntime-cro21:49:040
2474216411,114sleep22615-21sed20:59:392
2370216411,75sleep22450-21fschecks_time19:19:372
18469216319,105sleep20-21swapper/220:09:202
24826215863,83sleep224868-21if_eth023:54:262
29231215546,66sleep20-21swapper/222:25:002
21304214974,12sleep20-21swapper/221:59:362
7562214812,84sleep20-21swapper/222:59:202
1060321485,11sleep30-21swapper/319:44:293
28533214710,83sleep228741-21cat22:24:072
28533214710,83sleep228741-21cat22:24:072
31883214342,18sleep20-21swapper/219:09:512
31883214342,18sleep20-21swapper/219:09:512
28116214017,110sleep128135-21fschecks_count20:39:231
28116214017,110sleep128135-21fschecks_count20:39:231
21276214046,82sleep221356-21apt-config20:19:052
25464213925,86sleep20-21swapper/220:29:352
14982213427,95sleep215064-21mailstats21:39:332
14982213427,95sleep215064-21mailstats21:39:332
11506213341,57sleep211592-21perl21:29:272
711121316,71sleep20-21swapper/222:57:052
711121316,71sleep20-21swapper/222:57:052
4626213112,76sleep24683-21idleruntime22:49:232
1688621318,67sleep20-21swapper/223:29:232
19089213020,88sleep019204-21cat23:34:380
1916212931,86sleep21951-21ntpq00:24:302
329521288,107sleep23343-21ntp_kernel_pll_22:44:302
14257212814,98sleep014393-21latency_hist21:39:060
8507212716,19sleep20-21swapper/219:39:072
18905212536,75sleep219049-21grep21:54:072
2429321238,102sleep224380-21basename22:09:372
13411212214,90sleep113492-21grep21:34:351
6048212117,81sleep20-21swapper/219:30:192
16308212014,22sleep20-21swapper/221:44:302
8965211918,83sleep08985-21cut19:39:290
3652211922,74sleep13792-21grep22:44:371
4269211813,91sleep34343-21find21:05:053
22769211815,87sleep022844-21sensors_temp22:04:340
27451211712,91sleep127464-21kernelversion22:20:021
27451211712,91sleep127464-21kernelversion22:20:021
2655821169,93sleep326574-21needreboot23:59:313
21462211514,85sleep022860-1kworker/0:1H20:19:070
4178211415,70sleep04180-21cron22:49:040
26673211433,63sleep226682-21munin-run22:19:062
5003211119,13sleep20-21swapper/219:28:252
21803211119,72sleep021296-21apt-get20:19:150
21803211119,72sleep021296-21apt-get20:19:150
31603210843,52sleep20-21swapper/220:49:422
23493210810,28sleep20-21swapper/222:09:052
13797210818,45sleep10-21swapper/123:19:211
8915210712,78sleep09035-21sed21:19:360
8915210712,78sleep09035-21sed21:19:360
4826210615,29sleep20-21swapper/200:34:192
4826210615,29sleep20-21swapper/200:34:192
1514221057,13sleep20-21swapper/223:24:142
381210312,16sleep20-21swapper/219:14:112
381210312,16sleep20-21swapper/219:14:112
29004210223,59sleep3228-21systemd-journal00:09:043
29004210223,59sleep3228-21systemd-journal00:09:043
28921210218,67sleep117249-21kworker/u8:322:24:181
9930210113,67sleep210020-21fschecks_time21:24:272
12244210112,42sleep20-21swapper/219:49:332
25994210025,50sleep326047-21grep23:59:073
1544210018,24sleep10-21swapper/120:59:061
1024129921,62sleep20-21swapper/219:44:202
3128529723,54sleep331300-21sort19:09:363
3128529723,54sleep331300-21sort19:09:363
2645729736,15sleep20-21swapper/220:34:192
239922968,12sleep10-21swapper/122:09:281
1268729615,64sleep112795-21latency_hist21:34:071
555729524,46sleep05067-21apt-get19:29:160
219322956,77sleep20-21swapper/220:19:332
219322956,77sleep20-21swapper/220:19:332
2141229514,57sleep321559-21unixbench_singl21:59:373
245062937,74sleep20-21swapper/220:27:292
2316729315,57sleep30-21swapper/323:49:263
2316729315,57sleep30-21swapper/323:49:263
727729117,49sleep07348-21cat21:14:390
727729117,49sleep07348-21cat21:14:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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