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2025-05-02 - 13:00

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 50 highest latencies:
System rack5slot7s.osadl.org (updated Fri May 02, 2025 00:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6282224272190,97sleep00-21swapper19:09:030
64329916015,24cyclictest11103-21memory19:35:420
64329915911,123cyclictest20435-21grep23:51:020
6432991589,123cyclictest3335-21apt-get22:11:470
64329915817,26cyclictest32699-21apt-get21:50:200
64329915733,105cyclictest30995-21cat21:40:010
64329915713,120cyclictest27054-21wc21:15:040
64329915617,109cyclictest13271-21apt-get19:50:200
64329915615,116cyclictest18573-21sort23:40:450
64329915537,98cyclictest17428-21cat23:35:040
64329915533,99cyclictest14930-21grep23:16:030
64329915520,108cyclictest2643-21apt-get22:05:250
64329915518,22cyclictest9179-21apt-get22:46:300
64329915511,120cyclictest30191-21modprobe21:35:010
64329915510,120cyclictest7276-21latency_hist19:15:080
64329915430,17cyclictest0-21swapper20:25:450
64329915421,104cyclictest10072-21apt-get19:30:220
64329915418,29cyclictest5530-21memory22:20:460
64329915416,24cyclictest21403-21munin-run00:00:020
64329915410,26cyclictest25712-21kernelversion00:25:420
64329915316,25cyclictest8368-21munin-run19:20:030
64329915313,116cyclictest25402-21modprobe21:05:010
64329915312,25cyclictest17868-21wc23:35:540
64329915217,110cyclictest19847-21irqstats20:30:390
64329915216,24cyclictest15227-21df_inode23:20:300
64329915213,97cyclictest27007-21munin-run00:35:000
64329915212,116cyclictest27865-21grep21:20:060
64329915212,114cyclictest27209-21df_inode00:35:290
64329915118,106cyclictest22998-21apt-get20:50:270
64329915116,21cyclictest18265-21irqstats20:20:420
64329915114,116cyclictest22778-21kworker/u2:820:55:230
64329915113,35cyclictest16025-21diskstats23:25:340
64329915112,39cyclictest26206-21latency_hist21:10:030
64329915111,117cyclictest15105-21wc20:00:440
64329915026,20cyclictest0-21swapper20:35:220
64329915016,110cyclictest17432-21irqstats20:15:420
64329915016,109cyclictest14757-21latency_hist20:00:060
64329915016,108cyclictest31356-21memory21:40:460
64329915015,25cyclictest10546-21memory22:50:510
64329915011,43cyclictest8721-21/usr/sbin/munin22:40:420
64329915011,116cyclictest5258-21sort22:20:060
6432991499,116cyclictest8352-21modprobe22:40:000
64329914916,26cyclictest16784-21ntp_states20:10:550
64329914914,23cyclictest11204-21df_inode22:55:300
64329914913,112cyclictest15850-21irqstats20:05:410
64329914910,116cyclictest21739-21/usr/sbin/munin00:00:410
64329914910,115cyclictest13390-21cron23:10:010
64329914832,33cyclictest24263-21grep00:15:530
64329914817,107cyclictest28954-21memory21:25:460
64329914816,108cyclictest12611-21munin-run23:05:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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