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2026-04-12 - 00:49

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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.

Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 50.5 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 rack5slot7s.osadl.org (updated Sat Apr 11, 2026 12:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7142224452196,97sleep00-21swapper07:09:470
72139916740,106cyclictest23699-21latency_hist12:05:060
72139916315,124cyclictest17355-21wc08:05:570
72139916143,98cyclictest11547-21sshd07:33:530
72139916113,123cyclictest20840-21munin-run08:30:040
72139915720,28cyclictest17402-21diskstats11:25:430
72139915713,120cyclictest24974-21awk12:11:000
72139915614,25cyclictest14460-21uname07:51:180
72139915614,118cyclictest12322-21df10:55:260
72139915613,118cyclictest23330-21awk08:41:020
72139915613,117cyclictest25879-21munin-run09:00:020
72139915611,120cyclictest22637-21sort11:56:010
72139915518,111cyclictest11980-21ntp_states07:35:520
72139915514,26cyclictest26505-21irqstats12:21:070
72139915514,23cyclictest29098-21munin-run09:20:030
72139915514,116cyclictest13116-21cstates11:00:260
72139915512,118cyclictest16763-21grep11:21:290
7213991549,119cyclictest20999-21/usr/sbin/munin11:46:000
72139915418,109cyclictest9015-21apt-get10:35:190
72139915416,23cyclictest29285-21apt-get09:20:260
72139915415,21cyclictest15002-21apt-get07:57:060
72139915415,115cyclictest26795-21apt-get09:05:180
72139915318,37cyclictest29448-21apt12:40:000
72139915318,110cyclictest27167-21apt-get12:25:230
72139915316,99cyclictest15856-21wc11:15:550
72139915314,116cyclictest15056-21find11:10:540
7213991529,118cyclictest24489-21latency_hist12:10:050
72139915214,115cyclictest14534-21munin-run11:10:030
72139915214,115cyclictest13393-21diskstats07:45:340
72139915214,115cyclictest12755-21sort07:40:470
72139915214,113cyclictest9646-21wc07:20:570
72139915212,119cyclictest20838-21apt-get08:31:350
72139915212,117cyclictest24178-21wc08:46:050
72139915212,116cyclictest908-21latency_hist09:45:030
72139915115,37cyclictest3287-21munin-run10:00:020
72139915111,117cyclictest8915-21systemctl07:16:160
72139915016,107cyclictest18520-21apt-get08:15:190
72139915016,105cyclictest7423-21/usr/sbin/munin10:25:240
72139915015,23cyclictest8915-21munin-run10:35:010
72139915015,106cyclictest5455-21mailstats10:10:570
72139915013,113cyclictest27587-21/usr/sbin/munin09:10:520
72139914916,23cyclictest9934-21df10:40:250
72139914916,110cyclictest5904-21diskstats10:15:330
72139914913,25cyclictest19777-21ls11:40:220
72139914913,19cyclictest7070-21sshd10:20:560
7213991489,115cyclictest16374-21memory08:00:530
72139914835,18cyclictest0-21swapper10:45:420
72139914820,101cyclictest17721-21/usr/sbin/munin08:11:090
72139914818,103cyclictest24489-21df_inode08:50:300
72139914816,93cyclictest26173-21irqstats09:00:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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