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2025-11-25 - 14:26

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 Tue Nov 25, 2025 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7402224292200,86sleep00-21swapper07:07:380
77129916117,101cyclictest17634-21apt-get11:30:260
77129916025,117cyclictest27111-21df09:10:280
77129916017,118cyclictest14042-21apt07:50:020
77129915880,53cyclictest29358-21sshd09:22:000
77129915842,24cyclictest20836-21unixbench_singl11:46:020
77129915810,122cyclictest1118-21apt-get09:51:580
77129915713,103cyclictest21022-21awk08:30:560
77129915637,98cyclictest15939-21latency_hist11:20:060
77129915616,116cyclictest14250-21df_inode07:50:280
7712991559,122cyclictest24869-21head12:11:040
7712991559,121cyclictest18870-21ls11:35:520
77129915575,57cyclictest24167-21grep08:50:540
77129915533,22cyclictest16341-21timerwakeupswit08:01:050
77129915516,115cyclictest8952-21memory07:15:350
77129915511,26cyclictest28450-21sshd12:35:280
77129915511,103cyclictest8506-21cat10:31:060
77129915437,22cyclictest1035-21grep09:46:030
77129915416,98cyclictest28148-21/usr/sbin/munin12:35:040
77129915416,24cyclictest6171-21munin-run10:20:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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