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2025-12-16 - 07:12

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 Fri Dec 12, 2025 00:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12840240328,70sleep20-21swapper/222:12:502
2067923888,344sleep220735-21tune2fs22:37:492
6591228024,209sleep26685-21fschecks_time21:52:512
2211822776,230sleep222267-21latency_hist19:17:332
3155422510,43sleep20-21swapper/219:47:332
28475224742,184sleep228566-21fschecks_time23:02:522
23969223321,15sleep20-21swapper/219:22:502
17329221641,78sleep20-21swapper/219:02:512
26932220544,117sleep20-21swapper/222:57:522
13349220220,121sleep20-21swapper/223:57:472
5612219917,89sleep25776-21grep21:48:072
30664219215,115sleep20-21swapper/221:27:312
30664219215,115sleep20-21swapper/221:27:312
124721899,97sleep21285-21processes19:52:592
124721899,97sleep21285-21processes19:52:592
3742218547,15sleep20-21swapper/221:42:582
32126218410,160sleep032206-21find23:13:040
9843217514,109sleep2284-21dbus-daemon20:22:302
5065217210,113sleep20-21swapper/223:32:322
14847217224,73sleep20-21swapper/222:18:022
29061217010,145sleep229110-21unin-run21:22:302
31173216933,116sleep20-21swapper/221:27:522
31173216933,116sleep20-21swapper/221:27:522
9215216113,136sleep19333-21wc20:18:051
26716216128,15sleep20-21swapper/221:13:022
1670121549,46sleep20-21swapper/222:23:072
587921468,86sleep25959-21switchtime23:33:002
18291214546,60sleep218299-21cpu00:12:492
26012214017,74sleep10-21swapper/121:12:321
15857214012,113sleep015941-21sed20:38:030
14453213730,24sleep20-21swapper/220:33:452
24307213626,96sleep224456-21sed00:32:322
25797213457,21sleep20-21swapper/219:27:552
21394213313,104sleep021439-21cpu00:22:490
7410213010,102sleep27452-21sed20:12:572
3192621278,23sleep30-21swapper/323:12:593
968721266,109sleep25666-21snmpd23:44:432
1473212628,50sleep21568-21apt-key21:37:332
2287521258,75sleep223020-21grep22:43:062
2287521258,75sleep223020-21grep22:43:062
798721240,8sleep10-21swapper/121:57:331
2502321248,81sleep225033-21unin-run22:52:312
24462212342,43sleep224614-21cat21:07:322
16773212315,23sleep20-21swapper/200:08:092
16773212315,23sleep20-21swapper/200:08:092
22951212014,91sleep123020-21df00:27:511
18494212042,57sleep20-21swapper/220:47:502
19147211812,35sleep019249-21perl22:32:500
8168211720,75sleep08252-21wc23:42:310
2478211641,16sleep20-21swapper/221:38:382
9375211537,42sleep29474-21latency_hist22:02:322
21639211529,73sleep221694-21fschecks_count20:57:562
29908211434,21sleep20-21swapper/223:07:412
30611211116,19sleep00-21swapper/021:27:290
30611211116,19sleep00-21swapper/021:27:290
808221095,35sleep20-21swapper/223:42:052
2049721099,60sleep220569-21mailstats20:53:032
14018210816,75sleep31-21systemd22:17:313
10202210517,73sleep010254-21cpuspeed23:47:480
10202210517,73sleep010254-21cpuspeed23:47:480
17125210429,53sleep017127-21cron22:27:290
11169210442,42sleep20-21swapper/222:07:492
5398210316,69sleep35462-21ps21:48:033
506210217,68sleep332460-21/usr/sbin/munin21:33:053
23789210121,62sleep323876-21tune2fs22:47:513
358421005,38sleep20-21swapper/220:02:152
358421005,38sleep20-21swapper/220:02:152
17389210011,75sleep317390-21munin-node22:27:403
14079210017,67sleep114227-21cat22:17:331
182229914,60sleep31812-21apt-get21:37:503
1751329914,67sleep017619-21tune2fs22:27:500
132929921,64sleep01365-21rm21:37:310
878929823,52sleep18938-21unixbench_singl21:58:071
219629727,21sleep30-21swapper/323:22:483
219629727,21sleep30-21swapper/323:22:483
2035329719,58sleep120444-21latency_hist22:37:321
129972975,35sleep20-21swapper/220:30:052
108642979,47sleep20-21swapper/220:23:152
2528129629,20sleep20-21swapper/221:08:052
283172958,75sleep228407-21ls19:37:322
2037829521,54sleep319817-21/usr/sbin/munin00:18:033
1900529426,33sleep30-21swapper/319:07:373
1635729419,55sleep20-21swapper/220:39:592
2995729311,65sleep330032-21find21:23:043
2995729311,65sleep330032-21find21:23:043
2969629317,28sleep10-21swapper/123:07:321
1172629110,66sleep011872-21latency_hist20:27:330
46229018,54sleep2488-21munin-plugin-st19:52:302
539828926,35sleep30-21swapper/323:32:493
41728915,61sleep3420-21sshd19:51:593
1998628922,39sleep10-21swapper/120:52:461
1095728913,58sleep20-21swapper/222:07:332
2882328815,47sleep20-21swapper/219:37:522
2229828828,12sleep00-21swapper/019:17:390
1505628718,53sleep115037-21latency_hist20:37:311
1365528711,62sleep013667-21vmstat22:13:040
49882866,69sleep20-21swapper/220:05:222
1626528623,28sleep00-21swapper/018:58:010
2964528526,40sleep329647-21cron23:07:303
225772855,69sleep20-21swapper/200:26:302
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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