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2025-09-16 - 08:49

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 Tue Sep 16, 2025 00:45:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4011224122182,87sleep00-21swapper19:06:190
44709917417,130cyclictest10778-21apt-get19:45:150
44709916214,34cyclictest26644-21munin-run21:20:020
44709916119,26cyclictest18138-21apt-get23:45:240
44709915912,45cyclictest13638-21grep23:16:040
44709915714,116cyclictest17153-21apt23:40:010
44709915615,40cyclictest25431-21apt-get00:30:420
44709915612,118cyclictest12775-21irqstats19:55:460
4470991559,102cyclictest11474-21apt-get19:51:370
44709915517,25cyclictest5277-21munin-node19:15:040
44709915513,26cyclictest23849-21latency_hist00:20:040
44709915511,119cyclictest16030-21sort20:15:050
4470991549,26cyclictest31994-21wc21:50:560
44709915421,30cyclictest23649-21diskstats21:00:360
44709915416,41cyclictest18188-21ntp_states20:26:320
44709915414,19cyclictest25333-21sort00:26:020
44709915414,118cyclictest17572-21/usr/sbin/munin20:25:050
44709915414,117cyclictest6775-21diskstats19:20:430
44709915410,120cyclictest5626-21apt-get22:30:130
44709915333,22cyclictest19754-21users23:51:120
44709915318,29cyclictest1408-21sshd22:04:150
44709915316,97cyclictest14529-21apt-get23:26:030
44709915315,21cyclictest14916-21munin-run20:10:050
44709915315,113cyclictest17275-21/usr/sbin/munin23:41:040
44709915314,115cyclictest9862-21munin-run19:40:030
44709915311,118cyclictest8811-21grep22:46:020
44709915310,118cyclictest11831-21grep23:05:580
44709915228,18cyclictest0-21swapper21:14:510
44709915217,113cyclictest3835-21munin-run22:20:020
44709915215,24cyclictest27127-21wc00:36:100
4470991519,119cyclictest12632-21grep23:10:580
44709915115,112cyclictest21227-21df_inode20:45:310
44709915114,112cyclictest29852-21apt21:40:010
44709915112,25cyclictest20203-21systemctl20:40:010
44709915016,24cyclictest27420-21users21:21:060
44709915013,40cyclictest3110-21latency_hist22:15:050
44709915013,23cyclictest22612-21munin-run20:55:010
44709915012,24cyclictest6414-21/usr/sbin/munin19:20:060
44709915011,23cyclictest16048-21sshd20:15:170
44709915010,26cyclictest8723-21ps19:30:540
4470991499,98cyclictest19399-21munin-run20:35:010
44709914916,27cyclictest10728-21diskstats23:00:330
44709914915,28cyclictest22712-21apt-get20:55:180
44709914915,21cyclictest14117-21apt20:05:020
44709914915,108cyclictest28359-21apt-get21:30:170
44709914913,27cyclictest10168-21uname19:40:410
44709914913,112cyclictest21082-21wc00:00:550
4470991488,100cyclictest5044-21grep22:25:480
44709914835,89cyclictest20581-21modprobe00:00:010
44709914821,27cyclictest29978-21apt-get21:40:230
44709914816,23cyclictest2182-21users22:06:030
44709914813,110cyclictest22305-21/usr/sbin/munin00:10:390
44709914725,21cyclictest0-21swapper00:20:430
44709914718,104cyclictest32367-21apt-get21:55:170
44709914717,107cyclictest30886-21diskstats21:45:340
44709914716,25cyclictest9903-21diskstats22:55:320
44709914716,25cyclictest7674-21df_inode19:25:390
44709914715,39cyclictest20428-21df_inode20:40:310
44709914713,17cyclictest8998-21apt-get22:50:150
44709914712,112cyclictest27662-21df21:25:250
44709914711,115cyclictest7707-21awk22:40:510
44709914618,21cyclictest3957-21apt-get22:20:120
44709914611,24cyclictest15660-21apt-get23:30:130
44709914512,24cyclictest6587-21sshd22:35:150
44709914512,22cyclictest21939-21sendmail_mailqu00:05:570
44709914510,112cyclictest14147-21grep23:20:510
44709914317,24cyclictest24507-21irqstats21:05:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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