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2026-07-11 - 12:25

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 Sat Jul 11, 2026 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5881224472201,99sleep00-21swapper19:07:380
61919916112,121cyclictest17753-21awk23:35:520
61919915920,111cyclictest326-21apt-get21:50:210
61919915917,117cyclictest6388-21df19:10:260
61919915827,18cyclictest0-21swapper19:46:040
61919915817,117cyclictest18922-21apt-get23:46:350
61919915815,120cyclictest11337-21apt-get19:41:400
61919915717,118cyclictest1521-21irqstats21:55:460
61919915716,116cyclictest17261-21/usr/sbin/munin23:31:040
61919915715,115cyclictest15818-21apt-get23:25:150
61919915714,102cyclictest26052-21irqstats00:26:100
61919915687,29cyclictest17188-21apt-get20:16:220
61919915617,25cyclictest21439-21munin-run20:40:030
61919915612,118cyclictest4218-21cut22:10:570
61919915514,118cyclictest24645-21munin-run21:00:030
61919915513,99cyclictest32126-21/usr/sbin/munin21:45:360
61919915512,118cyclictest19249-21df_inode20:25:290
61919915511,121cyclictest14200-21wc23:15:210
61919915510,119cyclictest15959-21grep20:05:470
61919915415,114cyclictest26809-21df_inode00:30:360
61919915414,23cyclictest14177-21df19:55:270
61919915413,26cyclictest26351-21/usr/sbin/munin21:10:110
61919915335,95cyclictest23461-21ntp_states20:50:490
61919915317,24cyclictest11685-21munin-run23:00:020
61919915314,116cyclictest11341-21/usr/sbin/munin19:40:060
61919915314,114cyclictest6977-21apt-get22:30:200
61919915234,21cyclictest10031-21uname19:30:420
61919915215,96cyclictest21655-21df20:40:260
61919915214,98cyclictest28203-21munin-run00:40:020
61919915214,24cyclictest20161-21diskstats23:50:400
61919915214,101cyclictest7155-21snmpd21:05:480
61919915212,21cyclictest25522-21cat21:05:050
61919915211,25cyclictest9125-21wc19:25:240
61919915210,45cyclictest10656-21mailstats22:50:590
61919915118,21cyclictest0-21swapper22:20:390
61919915116,25cyclictest29470-21apt21:30:010
61919915113,23cyclictest23353-21df00:10:240
61919915111,115cyclictest6803-21grep22:26:000
61919915034,24cyclictest2743-21timerwakeupswit22:01:020
61919915034,22cyclictest8254-21apt-get19:20:140
61919915018,25cyclictest27856-21apt21:20:020
61919915018,24cyclictest29678-21df_inode21:30:310
61919915012,22cyclictest20943-21df23:55:250
61919914928,18cyclictest0-21swapper20:21:080
61919914927,22cyclictest0-21swapper21:35:590
61919914919,25cyclictest7777-21apt-get22:35:160
61919914917,32cyclictest13573-21ntpq19:50:480
61919914917,106cyclictest27981-21apt-get21:20:160
61919914915,111cyclictest24763-21munin-run00:20:030
61919914913,114cyclictest24985-21df00:20:250
61919914911,24cyclictest22985-21wc00:06:010
61919914911,24cyclictest20624-21cron20:35:000
61919914812,26cyclictest7995-21cat19:16:190
61919914719,104cyclictest4651-21df22:15:260
61919914719,101cyclictest18230-21apt-get23:40:170
61919914717,45cyclictest21777-21diskstats00:00:320
61919914715,110cyclictest8918-21ntp_states22:40:520
61919914714,43cyclictest9394-21apt-get22:45:120
61919914714,25cyclictest17190-21munin-run20:15:040
61919914712,19cyclictest13151-21sort23:06:010
61919914710,44cyclictest7155-21snmpd23:11:030
6191991468,117cyclictest22638-21tr20:45:480
61919914618,102cyclictest31188-21apt-get21:40:160
61919914615,25cyclictest14899-21apt-get20:00:170
61919914614,105cyclictest11802-21/usr/sbin/munin23:00:220
61919914515,107cyclictest15084-21/usr/sbin/munin23:20:220
61919914510,110cyclictest3279-21ntpq22:05:510
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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