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2025-07-13 - 22:36

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 highest latencies:
System rack5slot7s.osadl.org (updated Sun Jul 13, 2025 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31520224372192,89sleep00-21swapper07:08:010
317879915920,23cyclictest15596-21apt-get12:05:200
317879915918,22cyclictest9380-21apt-get11:31:050
317879915818,118cyclictest32592-21munin-node07:15:070
317879915716,22cyclictest554-21apt-get07:15:360
317879915626,108cyclictest5220-21grep07:41:050
317879915616,115cyclictest19341-21diskstats09:10:340
317879915616,114cyclictest5903-21ntp_states07:46:440
317879915614,120cyclictest7905-21munin-run08:00:030
317879915611,122cyclictest8983-21awk11:25:510
317879915519,23cyclictest21732-21apt09:25:140
317879915513,118cyclictest26848-21/usr/sbin/munin09:55:380
317879915421,31cyclictest32417-21diskstats10:30:340
317879915415,24cyclictest12462-21df11:45:350
317879915414,24cyclictest3179-21/usr/sbin/munin10:50:350
317879915414,23cyclictest24173-21munin-run09:40:020
317879915413,117cyclictest18563-21/usr/sbin/munin09:05:350
317879915412,39cyclictest2181-21/usr/sbin/munin07:25:490
317879915411,26cyclictest7769-21munin-plugin-st11:20:010
317879915410,102cyclictest11204-21apt-get11:41:380
317879915315,99cyclictest3074-21df07:30:270
317879915236,23cyclictest31020-21grep10:20:520
317879915218,25cyclictest13187-21apt-get11:50:170
317879915217,24cyclictest32687-21munin-node12:00:590
317879915217,109cyclictest17061-21sshd12:12:350
317879915216,24cyclictest32687-21munin-node10:00:590
317879915214,20cyclictest9487-21awk08:06:100
317879915214,114cyclictest17112-21awk08:55:470
317879915214,113cyclictest18916-21diskstats12:25:350
317879915213,114cyclictest21543-21cron09:25:010
317879915142,89cyclictest28495-21/usr/sbin/munin10:05:430
317879915117,27cyclictest20133-21df_inode09:15:310
317879915114,99cyclictest23189-21sort09:31:090
317879915113,113cyclictest13463-21unixbench_singl08:31:020
317879915111,116cyclictest3766-21/usr/sbin/munin07:35:500
317879915110,117cyclictest268-21snmpd12:00:010
317879915026,20cyclictest8646-21sed08:01:030
317879915021,27cyclictest11479-21memory08:20:460
317879915016,22cyclictest1500-21diskstats07:20:350
317879915016,109cyclictest4992-21ntp_states11:00:520
317879915013,115cyclictest29198-21diskstats10:10:360
317879915011,38cyclictest29993-21diskstats10:15:350
317879915011,25cyclictest10615-21df_inode11:35:390
317879915010,117cyclictest2951-21kworker/u2:010:50:010
31787991499,116cyclictest31797-21grep10:25:480
317879914936,22cyclictest24808-21switchtime09:41:050
317879914921,28cyclictest5470-21apt-get11:05:210
317879914921,100cyclictest3855-21apt-get10:55:230
317879914920,24cyclictest13731-21diskstats08:35:360
317879914916,110cyclictest1347-21munin-run10:40:040
317879914916,107cyclictest25085-21/usr/sbin/munin09:45:380
317879914915,49cyclictest11118-21munin-run08:20:020
317879914913,22cyclictest16202-21irqstats08:50:420
317879914913,109cyclictest12106-21cstates08:25:250
317879914816,23cyclictest21100-21munin-run12:40:020
317879914816,106cyclictest6392-21/usr/sbin/munin11:10:360
317879914814,112cyclictest25984-21df09:50:330
317879914813,98cyclictest17882-21modprobe12:20:010
317879914813,39cyclictest1675-21grep10:40:410
317879914736,21cyclictest15251-21cpu08:45:220
317879914733,19cyclictest18135-21sshd12:20:350
317879914728,22cyclictest0-21swapper08:10:220
317879914715,104cyclictest14443-21apt-get08:40:210
317879914712,113cyclictest18274-21head09:01:030
317879914711,23cyclictest7056-21unixbench_singl07:51:150
317879914618,24cyclictest7891-21apt-get11:20:200
317879914511,25cyclictest20295-21/usr/sbin/munin12:35:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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