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2025-08-26 - 16:34

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 Tue Aug 26, 2025 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11098224392184,97sleep00-21swapper07:08:240
113229916013,121cyclictest13260-21modprobe10:40:010
113229915917,117cyclictest30788-21munin-run09:10:010
113229915911,24cyclictest6259-21wc09:56:050
113229915822,29cyclictest31684-21apt-get09:15:220
113229915728,105cyclictest0-21swapper09:41:040
11322991559,106cyclictest4843-21grep09:50:080
113229915518,95cyclictest30614-21df_inode12:25:280
113229915512,99cyclictest30954-21wc09:10:260
113229915419,33cyclictest4934-21apt-get09:50:310
113229915416,24cyclictest25362-21df_inode08:35:290
113229915411,42cyclictest3152-21apt09:40:020
113229915319,27cyclictest28879-21apt-get12:15:200
113229915315,24cyclictest27974-21grep08:50:510
113229915313,115cyclictest14626-21memory10:46:220
113229915311,25cyclictest28518-21mailstats12:11:010
113229915310,118cyclictest18859-21find11:10:580
113229915236,24cyclictest16662-21switchtime07:40:590
113229915231,21cyclictest16767-21sort11:00:050
113229915219,27cyclictest10258-21ntp_states10:20:540
113229915216,24cyclictest26368-21munin-run12:00:010
113229915213,115cyclictest20168-21df_inode11:20:280
113229915211,28cyclictest24689-21awk08:31:290
113229915211,27cyclictest12258-21apt-get10:35:050
113229915211,25cyclictest333-21grep09:20:490
113229915133,98cyclictest20859-21cron08:10:010
113229915128,19cyclictest0-21swapper08:13:290
113229915120,23cyclictest15447-21diskstats07:35:350
113229915116,22cyclictest19473-21df_inode08:00:290
113229915115,23cyclictest17741-21df_inode11:05:290
113229915115,21cyclictest19250-21munin-run08:00:010
113229915112,22cyclictest15912-21munin-plugin-st10:55:010
113229915036,94cyclictest21483-21grep11:26:040
113229915031,98cyclictest17751-21apt-get07:50:120
113229915021,28cyclictest16836-21apt-get11:00:240
113229915017,35cyclictest17127-21irqstats07:45:380
113229915016,112cyclictest26594-21df_inode12:00:290
113229915016,109cyclictest24171-21df11:45:290
113229915012,25cyclictest8729-21zcat10:10:580
113229915010,40cyclictest14505-21sort07:30:050
113229914916,24cyclictest32342-21memory12:35:440
113229914915,111cyclictest7416-21munin-run10:05:020
113229914914,28cyclictest12113-21apt-get07:15:490
113229914914,111cyclictest14832-21awk07:30:480
113229914813,111cyclictest12946-21/usr/sbin/munin07:21:090
113229914812,41cyclictest2265-21head09:31:080
113229914719,21cyclictest14038-21head10:41:110
113229914717,26cyclictest29811-21df12:20:280
113229914717,20cyclictest0-21swapper11:50:210
113229914716,107cyclictest11591-21irqstats07:10:390
113229914714,38cyclictest22693-21memory11:35:450
113229914713,111cyclictest23009-21grep08:20:550
113229914711,21cyclictest1378-21wc09:26:000
113229914617,102cyclictest29296-21apt-get09:00:210
113229914616,24cyclictest19232-21apt-get11:15:190
113229914614,23cyclictest9823-21munin-run10:20:030
113229914614,23cyclictest27390-21df_inode12:05:280
113229914613,22cyclictest26983-21df_inode08:45:290
11322991458,22cyclictest26676-21sort08:41:060
113229914518,104cyclictest29176-21munin-run09:00:030
113229914517,25cyclictest24044-21users08:26:060
113229914511,109cyclictest21757-21/usr/sbin/munin08:16:050
11322991449,115cyclictest21716-21cpuspeed11:30:230
113229914417,25cyclictest10853-21diskstats10:25:320
113229914417,20cyclictest7628-21diskstats10:05:350
113229914413,32cyclictest2821-21snmpd11:40:180
113229914413,102cyclictest31300-21/usr/sbin/munin12:30:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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