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2026-06-08 - 15:28

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 20 highest latencies:
System rack5slot7s.osadl.org (updated Mon Jun 08, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25761224382203,90sleep00-21swapper07:08:060
260179916416,120cyclictest2138-21ntp_states08:00:500
260179916217,27cyclictest30853-21munin-run11:00:050
260179916017,120cyclictest25345-21apt-get10:25:180
260179915946,91cyclictest24001-21ntp_kernel_err10:15:470
260179915912,121cyclictest19589-21sort09:50:210
260179915912,118cyclictest30848-21apt-get11:01:500
260179915721,107cyclictest12258-21apt-get09:05:220
260179915715,116cyclictest5149-21df_inode08:20:300
260179915712,44cyclictest13579-21cut12:25:570
260179915712,30cyclictest3657-21snmpd11:40:300
260179915641,95cyclictest2725-21df_inode08:05:290
260179915522,35cyclictest0-21swapper10:40:240
260179915521,27cyclictest28559-21apt-get10:45:200
260179915517,115cyclictest26825-21munin-node07:15:120
260179915514,118cyclictest7087-21users11:46:120
260179915511,27cyclictest8107-21sshd08:39:130
260179915441,92cyclictest29475-21/usr/sbin/munin10:50:350
260179915427,19cyclictest3453-21apt-get11:31:490
260179915415,115cyclictest27644-21munin-run10:40:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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