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2026-06-07 - 06:30

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 100 highest latencies:
System rack5slot7s.osadl.org (updated Sat Jun 06, 2026 00:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27605224442187,98sleep00-21swapper19:06:460
280129917019,25cyclictest5156-21apt-get23:20:310
280129916514,42cyclictest8408-21apt-get23:41:150
280129916111,122cyclictest17169-21sort00:30:030
280129916110,127cyclictest15573-21uname21:05:410
280129916017,119cyclictest4370-21apt-get20:01:170
280129915919,114cyclictest13689-21apt-get00:11:130
280129915815,119cyclictest17544-21sort21:16:020
280129915815,115cyclictest11148-21apt-get23:55:210
280129915716,25cyclictest8810-21grep20:22:060
280129915715,23cyclictest8412-21munin-run23:40:010
280129915712,120cyclictest7658-21sort23:35:040
280129915614,119cyclictest3560-21df23:10:300
280129915575,40cyclictest29803-21sort22:31:020
280129915518,109cyclictest1850-21apt-get19:45:180
280129915517,24cyclictest17926-21diskstats21:20:350
280129915514,118cyclictest12284-21diskstats20:45:300
280129915424,19cyclictest0-21swapper19:26:080
280129915422,29cyclictest29238-21apt-get19:15:370
280129915420,27cyclictest27792-21diskstats22:20:340
280129915416,23cyclictest4375-21munin-run20:00:050
280129915415,118cyclictest2500-21apt-get23:05:280
28012991539,120cyclictest11254-21sendmail20:40:010
280129915338,24cyclictest1823-21kernelversion23:00:390
280129915317,112cyclictest18507-21apt-get21:26:240
280129915314,25cyclictest29951-21apt-get19:21:270
280129915314,113cyclictest329-21sshd19:35:300
280129915313,24cyclictest15365-21sort00:16:070
280129915313,117cyclictest21621-21grep21:40:530
280129915312,24cyclictest28476-21/usr/sbin/munin22:25:120
280129915312,114cyclictest1052-21/usr/sbin/munin19:41:070
280129915310,119cyclictest9429-21cut20:26:030
28012991529,117cyclictest18043-21egrep00:35:200
280129915219,27cyclictest10353-21apt-get23:50:200
280129915214,115cyclictest11972-21/usr/sbin/munin00:00:550
280129915214,114cyclictest22465-21/usr/sbin/munin21:45:550
280129915213,114cyclictest11998-21grep20:41:030
280129915124,23cyclictest0-21swapper21:55:230
280129915116,112cyclictest4969-21munin-run23:20:060
280129915112,109cyclictest1525-21sendmail23:00:010
280129915111,114cyclictest9760-21/usr/sbin/munin20:30:540
280129915034,20cyclictest25688-21wc22:05:570
280129915027,102cyclictest16184-21apt-get21:10:120
280129915021,28cyclictest26052-21apt-get22:10:190
280129915017,107cyclictest19744-21munin-node19:15:030
28012991498,116cyclictest2543-21apt-get19:51:500
280129914931,21cyclictest19931-21awk21:31:000
280129914918,25cyclictest6222-21df23:25:320
280129914915,48cyclictest24572-21diskstats22:00:310
280129914915,22cyclictest13875-21df_inode20:55:290
280129914915,112cyclictest7349-21memory20:15:440
280129914913,22cyclictest13609-21head00:06:090
280129914912,24cyclictest23592-21sort21:55:040
280129914911,26cyclictest706-21sshd22:54:310
280129914911,26cyclictest30708-21grep22:36:030
280129914911,23cyclictest21130-21munin-plugin-st21:40:010
280129914911,113cyclictest7005-21sh20:15:010
280129914910,117cyclictest27541-21cron22:20:020
280129914828,21cyclictest0-21swapper00:21:040
280129914827,100cyclictest5724-21kworker/u2:1223:45:140
280129914815,39cyclictest31798-21diskstats22:45:310
280129914814,36cyclictest13073-21df_inode20:50:280
280129914813,22cyclictest14813-21cat21:00:400
280129914730,19cyclictest17764-21wc00:31:000
280129914711,25cyclictest5633-21/usr/sbin/munin20:05:420
280129914611,108cyclictest31893-21/usr/sbin/munin19:30:420
280129914412,108cyclictest31158-21ls22:40:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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