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2026-07-06 - 05:13

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 Mon Jul 06, 2026 00:45:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15164224492207,96sleep00-21swapper19:08:040
154279917521,126cyclictest29190-21users23:46:060
154279916327,112cyclictest0-21swapper21:51:070
154279916114,26cyclictest22979-21apt-get19:56:020
154279916018,112cyclictest5325-21apt-get21:25:170
154279915916,120cyclictest7849-21munin-run21:40:020
154279915914,123cyclictest32614-21apt-get00:10:140
15427991589,124cyclictest26883-21ps20:15:530
15427991579,105cyclictest15312-21apt-get22:26:450
154279915731,106cyclictest3529-21apt-get00:30:120
154279915715,119cyclictest2069-21if_err_eth000:20:370
154279915715,118cyclictest2089-21grep21:05:040
154279915620,24cyclictest19082-21apt-get19:30:210
154279915618,112cyclictest13787-21apt-get22:15:190
154279915611,121cyclictest27642-21awk20:20:480
154279915524,22cyclictest0-21swapper19:16:100
154279915516,117cyclictest7969-21apt-get21:40:140
154279915512,26cyclictest29582-21grep20:31:060
154279915512,120cyclictest26119-21/usr/sbin/munin23:31:040
154279915510,121cyclictest31768-21awk20:45:540
154279915435,21cyclictest15389-21wc22:25:070
154279915416,21cyclictest21591-21df19:45:240
154279915415,22cyclictest18388-21df19:25:270
154279915414,114cyclictest12784-21systemd-journal19:39:110
154279915412,24cyclictest28894-21sort20:30:050
154279915411,118cyclictest24574-21awk20:01:040
154279915411,117cyclictest24341-21sed23:16:030
154279915320,103cyclictest4436-21diskstats00:35:340
154279915316,110cyclictest31743-21apt-get00:05:190
154279915315,117cyclictest27621-21munin-run23:40:010
154279915310,120cyclictest22736-21head23:06:050
154279915310,119cyclictest1961-21snmpd21:45:220
154279915221,28cyclictest15698-21irqstats19:10:390
154279915216,23cyclictest1821-21munin-run00:20:020
154279915216,112cyclictest498-21grep20:55:200
154279915215,113cyclictest30948-21apt-get00:00:170
154279915213,23cyclictest388-21munin-run20:55:020
154279915213,116cyclictest30443-21munin-run20:40:020
154279915212,117cyclictest21151-21systemctl23:00:010
154279915210,28cyclictest26406-21sshd20:14:170
154279915127,30cyclictest0-21swapper22:10:040
154279915118,23cyclictest21925-21users23:01:080
154279915114,39cyclictest29985-21users23:51:090
154279915022,21cyclictest0-21swapper22:50:590
154279915018,29cyclictest18304-21memory22:40:460
154279915015,26cyclictest18856-21/usr/sbin/munin22:45:480
154279915012,114cyclictest27740-21apt23:40:130
154279915010,25cyclictest25226-21apt23:25:000
154279914917,46cyclictest11275-21apt22:00:010
154279914915,22cyclictest4410-21munin-run21:20:030
154279914913,114cyclictest6814-21apt-get21:35:020
15427991489,102cyclictest11914-21sort22:01:000
154279914834,18cyclictest0-21swapper20:06:020
154279914826,100cyclictest0-21swapper22:36:000
154279914820,102cyclictest25328-21apt-get23:25:210
154279914815,106cyclictest4529-21/usr/sbin/munin21:20:450
154279914812,30cyclictest2899-21/usr/sbin/munin21:10:440
154279914811,113cyclictest30756-21unixbench_singl23:56:050
154279914811,112cyclictest16534-21cstates22:30:300
154279914718,31cyclictest0-21swapper20:40:230
154279914710,112cyclictest23087-21kernelversion23:10:420
154279914618,23cyclictest22285-21/usr/sbin/munin19:51:070
154279914612,26cyclictest13762-21date22:15:040
15427991459,112cyclictest3329-21ls00:26:020
154279914416,102cyclictest21352-21users19:41:060
154279914315,22cyclictest2106-21apt21:05:120
154279914217,25cyclictest17663-21irqstats19:20:380
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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