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2026-03-27 - 21:45

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 Fri Mar 27, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12148224262194,90sleep00-21swapper07:06:440
125609917021,43cyclictest29432-21apt-get08:45:390
125609916418,26cyclictest31481-21df08:55:340
125609916113,122cyclictest7808-21/usr/sbin/munin09:50:430
125609915917,116cyclictest28236-21munin-run08:40:020
125609915913,23cyclictest489-21munin-run12:20:010
125609915818,23cyclictest27765-21apt-get11:50:180
125609915816,39cyclictest26407-21apt-get08:31:360
125609915814,24cyclictest26409-21munin-run08:30:020
125609915813,120cyclictest30450-21apt-get08:50:330
125609915811,122cyclictest20346-21apt-get07:56:040
125609915715,116cyclictest24708-21apt-get08:20:250
125609915715,100cyclictest22377-21diskstats08:05:340
12560991568,124cyclictest20947-21gpgv11:10:110
125609915614,25cyclictest9304-21apt10:00:010
125609915614,119cyclictest3286-21awk12:35:470
125609915518,25cyclictest23430-21apt-get11:26:300
125609915516,115cyclictest20199-21diskstats11:05:330
125609915515,118cyclictest18446-21cat10:55:050
125609915514,25cyclictest28231-21apt-get08:40:480
12560991549,120cyclictest1311-21grep12:25:030
125609915418,26cyclictest19319-21apt-get07:51:170
125609915416,114cyclictest24570-21munin-run08:20:060
125609915326,36cyclictest0-21swapper10:05:200
125609915322,102cyclictest14624-21apt-get07:20:200
125609915315,117cyclictest28558-21apt-get11:55:180
125609915315,114cyclictest29386-21apt-get12:00:180
125609915315,111cyclictest15034-21apt-get10:35:180
125609915310,44cyclictest22618-21run-parts11:20:010
125609915310,119cyclictest23240-21uname08:10:410
125609915310,116cyclictest111-21systemd-journal12:31:180
12560991529,21cyclictest6186-21wc09:40:060
125609915230,100cyclictest0-21swapper07:45:560
125609915220,28cyclictest26176-21apt-get11:40:160
125609915216,26cyclictest3802-21apt-get09:25:180
125609915216,23cyclictest15523-21df_inode07:25:300
125609915214,115cyclictest13364-21munin-node07:15:080
125609915210,119cyclictest111-21systemd-journal09:35:010
125609915210,117cyclictest272-21snmpd11:46:030
12560991519,37cyclictest511-21cat09:05:040
12560991519,25cyclictest13068-21zcat10:20:550
125609915121,28cyclictest24800-21memory11:30:510
125609915121,101cyclictest16214-21apt-get07:30:210
125609915116,25cyclictest13553-21diskstats10:25:340
125609915114,38cyclictest10119-21latency_hist10:05:000
125609915113,39cyclictest1489-21diskstats09:10:290
125609915112,114cyclictest2158-21cat12:30:050
125609915110,120cyclictest23102-21wc11:20:530
125609915020,20cyclictest30801-21kworker/u2:1312:10:140
125609915015,112cyclictest30077-21apt-get12:05:540
125609915014,25cyclictest7187-21irqstats09:45:390
125609915013,112cyclictest19912-21unixbench_singl11:01:110
125609915011,25cyclictest22121-21sed08:01:090
125609915011,114cyclictest16860-21grep10:45:400
125609914918,110cyclictest1292-21ls09:10:030
125609914918,106cyclictest2345-21irqstats09:15:380
125609914917,24cyclictest25354-21apt-get11:35:200
125609914914,28cyclictest17128-21/usr/sbin/munin07:35:350
125609914913,112cyclictest11637-21head10:11:030
125609914910,40cyclictest19174-21run-parts11:00:010
125609914815,24cyclictest14932-21apt10:35:010
125609914723,103cyclictest111-21systemd-journal07:20:010
125609914719,25cyclictest18005-21irqstats07:40:410
125609914630,94cyclictest3150-21if_eth009:20:340
125609914620,103cyclictest15968-21diskstats10:40:330
125609914610,98cyclictest6832-21grep09:41:020
125609914516,23cyclictest12526-21munin-run10:20:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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