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2026-07-20 - 16:59

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 Mon Jul 20, 2026 12:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4044224452200,100sleep00-21swapper07:06:520
44399916115,116cyclictest31595-21apt-get09:55:180
44399915917,25cyclictest12800-21munin-run08:00:040
44399915819,111cyclictest16018-21munin-run08:20:010
44399915818,23cyclictest10617-21diskstats07:45:340
44399915815,119cyclictest24025-21apt-get12:25:260
44399915812,120cyclictest5340-21munin-node08:20:120
44399915714,100cyclictest24445-21cstates09:10:240
44399915633,20cyclictest4170-21cp10:25:270
44399915626,23cyclictest13544-21head08:01:040
44399915616,114cyclictest20399-21apt-get12:05:400
44399915615,119cyclictest18057-21df08:30:250
44399915613,24cyclictest28720-21/usr/sbin/munin09:35:540
44399915612,119cyclictest26903-21df_inode09:25:310
44399915519,29cyclictest25888-21diskstats12:35:350
44399915513,24cyclictest31095-21awk09:50:480
44399915512,120cyclictest1485-21sort10:10:030
44399915414,23cyclictest1837-21grep10:10:480
44399915413,119cyclictest6090-21grep07:16:140
44399915410,119cyclictest22398-21awk08:55:590
44399915331,97cyclictest23854-21munin-run12:25:020
44399915319,108cyclictest8889-21apt-get07:35:200
44399915318,108cyclictest11299-21apt-get07:50:200
44399915313,25cyclictest10396-21modprobe07:45:000
44399915312,117cyclictest2346-21/usr/sbin/munin10:15:190
44399915228,17cyclictest24205-21sed09:06:040
44399915217,30cyclictest30116-21diskstats09:45:340
44399915216,94cyclictest25880-21munin-run09:20:020
44399915216,113cyclictest10744-21df_inode11:05:310
44399915216,109cyclictest3491-21ntpq10:20:490
44399915215,95cyclictest15535-21users11:31:140
44399915215,116cyclictest16780-21ntpq11:40:470
44399915210,117cyclictest22514-21uname12:15:420
44399915120,106cyclictest8752-21users07:31:080
44399915120,105cyclictest5117-21diskstats10:30:410
44399915118,37cyclictest19587-21munin-run12:00:030
44399915115,113cyclictest20401-21munin-run12:05:020
44399915110,117cyclictest19340-21sed08:36:050
44399915028,23cyclictest0-21swapper11:20:490
44399915020,34cyclictest0-21swapper11:01:010
44399915019,28cyclictest11542-21diskstats11:10:350
44399915016,24cyclictest29904-21munin-run09:45:020
44399915012,114cyclictest6502-21munin-run10:40:020
44399915012,114cyclictest5237-21basename07:15:030
44399915011,24cyclictest14355-21grep11:26:290
44399914916,108cyclictest7596-21irqstats10:45:410
44399914914,110cyclictest21964-21wc12:11:030
44399914913,22cyclictest18780-21munin-plugin-st11:55:010
44399914912,26cyclictest27889-21ntpq09:30:480
44399914911,114cyclictest21853-21modprobe08:55:010
44399914833,22cyclictest17830-21threads11:46:010
44399914818,103cyclictest6500-21apt-get07:20:210
44399914817,28cyclictest8873-21users10:51:060
44399914816,109cyclictest7364-21wc07:25:210
44399914815,111cyclictest17337-21irqstats08:25:470
44399914814,27cyclictest32417-21/usr/sbin/munin10:00:410
44399914812,25cyclictest19876-21tr08:40:490
44399914714,36cyclictest15151-21grep08:11:050
44399914713,109cyclictest13715-21/usr/sbin/munin08:05:310
44399914711,113cyclictest12224-21munin-node11:15:140
44399914710,45cyclictest26461-21mailstats09:20:570
4439991469,115cyclictest6737-21diskstats10:40:320
44399914617,106cyclictest15778-21df11:35:270
44399914615,22cyclictest20482-21diskstats08:45:350
4439991459,113cyclictest25506-21cat12:31:090
44399914520,26cyclictest9015-21apt-get10:55:220
44399914512,24cyclictest22895-21diskstats09:00:340
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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