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2026-09-23 - 02:45

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 792 highest latencies:
System rack5slot7s.osadl.org (updated Wed Sep 23, 2026 00:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32201224572201,99sleep00-21swapper19:07:320
325219916733,114cyclictest19425-21wc21:05:060
325219916019,24cyclictest10120-21irqstats23:25:380
325219916016,103cyclictest29213-21apt-get22:06:260
325219915913,121cyclictest19129-21apt-get00:22:020
325219915817,22cyclictest15051-21apt-get23:55:300
325219915816,23cyclictest11519-21latency_hist23:35:080
325219915714,120cyclictest8494-21irqstats23:15:400
325219915540,24cyclictest28741-21latency22:00:440
325219915523,29cyclictest6365-21apt-get19:45:200
325219915515,114cyclictest6729-21apt-get23:05:190
325219915513,117cyclictest27655-21cat21:55:050
325219915512,101cyclictest300-21sshd00:31:400
325219915511,120cyclictest4414-21apt-get19:35:330
325219915416,24cyclictest11492-21df20:15:260
325219915415,114cyclictest14056-21memory20:30:440
325219915322,27cyclictest23829-21irqstats21:31:120
325219915319,27cyclictest5934-21apt-get23:00:180
325219915312,99cyclictest7848-21/usr/sbin/munin23:10:570
325219915312,24cyclictest5814-21munin-run23:00:010
325219915312,114cyclictest26306-21latency21:45:430
325219915216,23cyclictest20389-21diskstats00:25:410
325219915216,20cyclictest11604-21apt-get23:35:220
325219915214,108cyclictest2219-21ntpq22:35:500
325219915213,39cyclictest13192-21sort23:41:070
325219915211,116cyclictest22115-21ls21:20:480
325219915131,22cyclictest2075-21cat19:20:060
325219915119,108cyclictest12395-21irqstats20:20:390
325219915118,106cyclictest8801-21apt-get20:00:290
325219915118,105cyclictest2131-21apt-get19:20:190
325219915117,28cyclictest19682-21memory21:05:470
325219915117,106cyclictest7955-21apt-get19:55:180
325219915116,25cyclictest15868-21/usr/sbin/munin20:40:560
325219915112,115cyclictest3516-21/usr/sbin/munin22:45:360
325219915111,27cyclictest15077-21mailstats20:35:560
32521991508,118cyclictest16037-21apt-get00:00:200
325219915015,93cyclictest24480-21/usr/sbin/munin21:36:150
325219915013,113cyclictest1006-21munin-run22:30:020
325219915010,26cyclictest31834-21modprobe22:20:000
325219915010,116cyclictest1519-21awk22:30:580
32521991499,116cyclictest17589-21cat20:51:020
325219914920,101cyclictest20237-21apt-get21:10:250
325219914917,24cyclictest13190-21irqstats20:25:380
325219914916,110cyclictest17122-21grep00:05:480
325219914916,109cyclictest22528-21/usr/sbin/munin00:36:050
325219914915,110cyclictest5568-21/usr/sbin/munin19:41:060
325219914914,37cyclictest28348-21users21:56:040
325219914914,30cyclictest2722-21/usr/sbin/munin22:41:020
325219914913,115cyclictest25949-21head21:41:010
325219914912,114cyclictest22830-21irqstats21:25:400
32521991489,114cyclictest13508-21entropy23:45:350
325219914821,28cyclictest16552-21ntp_states20:45:550
325219914816,19cyclictest4416-21munin-run19:35:020
325219914815,28cyclictest9848-21latency_hist23:25:040
325219914815,25cyclictest32629-21users22:21:110
325219914814,21cyclictest18257-21/usr/sbin/munin20:55:560
325219914813,24cyclictest4531-21latency22:50:410
325219914812,112cyclictest10271-21mailstats20:06:060
325219914812,111cyclictest31034-21munin-plugin-st22:15:010
325219914718,24cyclictest10599-21apt-get20:10:170
325219914715,108cyclictest404-21memory19:10:510
325219914710,24cyclictest21670-21grep21:16:040
325219914615,24cyclictest14285-21df23:50:250
325219914517,26cyclictest7266-21df_inode19:50:310
325219914513,22cyclictest2923-21/usr/sbin/munin19:25:290
325219914419,99cyclictest18661-21memory00:15:450
325219914411,24cyclictest17698-21cstates00:10:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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