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2026-06-06 - 12:47

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 Sat Jun 06, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15212243345,4296sleep010808-21kworker/0:221:59:080
26429276817,735sleep126463-21/usr/sbin/munin20:53:281
6057243052,39sleep00-21swapper/023:13:370
966223239,300sleep09676-21fschecks_count21:43:250
26895229246,100sleep00-21swapper/019:13:140
27741225132,205sleep027751-21find20:58:150
4563224933,190sleep04709-21unixbench_singl23:08:360
3096922497,205sleep031052-21fschecks_time21:08:250
19491224936,194sleep019585-21threads22:13:370
1162022496,206sleep00-21swapper/023:33:070
24340222722,187sleep324486-21wc00:13:073
7793222131,153sleep07915-21latency_hist21:38:080
17723221411,81sleep017330-21/usr/sbin/munin22:08:280
12991221416,186sleep00-21swapper/023:36:260
19993221213,182sleep120032-21grep23:58:231
1238222128,191sleep312404-21awk21:53:053
14006220939,125sleep00-21swapper/021:58:070
29179220213,119sleep028576-21/usr/sbin/munin19:18:350
15304220210,27sleep00-21swapper/020:18:180
25842220176,87sleep025875-21awk00:18:050
1221122000,37sleep00-21swapper/020:08:280
3063721949,151sleep030693-21interrupts19:23:560
29296219210,146sleep029306-21find21:03:160
18173219223,79sleep00-21swapper/020:28:070
25952218815,157sleep125976-21latency_hist20:53:071
25952218815,157sleep125976-21latency_hist20:53:071
1990621828,42sleep00-21swapper/023:58:180
23194218117,150sleep123230-21idleruntime00:08:251
32448218035,106sleep032526-21mailstats19:28:360
27032218010,157sleep327003-21apt-get19:13:333
3548217922,140sleep13566-21modprobe23:08:051
2717921799,124sleep00-21swapper/022:38:320
2564521707,30sleep00-21swapper/020:49:430
2564521707,30sleep00-21swapper/020:49:430
26238216721,106sleep00-21swapper/020:53:230
2173521677,38sleep00-21swapper/000:03:270
27419216623,16sleep00-21swapper/000:23:050
2411321665,11sleep00-21swapper/020:45:070
28204216417,104sleep00-21swapper/000:23:340
70421609,139sleep0724-21apt-get22:58:150
15373215613,125sleep00-21swapper/023:43:250
16366215133,44sleep11-21systemd23:46:321
706021489,124sleep07122-21grep23:18:250
3042621465,28sleep00-21swapper/000:31:580
2374214610,124sleep02431-21grep23:03:230
18796214620,50sleep00-21swapper/023:53:340
18796214620,50sleep00-21swapper/023:53:340
11336214018,111sleep00-21swapper/020:04:050
378221395,12sleep00-21swapper/019:42:000
32693213832,92sleep024596-21cyclictest21:13:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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