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2025-11-03 - 04:31

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 all highest latencies:
System rack5slot7s.osadl.org (updated Mon Nov 03, 2025 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17429224322191,96sleep00-21swapper19:06:390
178539917016,24cyclictest27876-21apt-get20:11:560
178539916011,123cyclictest3916-21systemctl21:00:010
178539915919,39cyclictest2252-21memory00:05:460
178539915911,122cyclictest11168-21apt-get21:45:360
178539915637,92cyclictest2152-21latency_hist20:50:080
178539915617,23cyclictest5802-21irqstats21:10:390
178539915615,114cyclictest17950-21apt-get19:10:170
17853991559,122cyclictest19179-21awk22:31:090
178539915516,117cyclictest2079-21apt-get20:51:050
178539915514,98cyclictest10353-21munin-run21:40:020
178539915514,116cyclictest26897-21munin-run23:20:030
17853991549,23cyclictest22138-21sed19:31:040
178539915440,23cyclictest4150-21timerandwakeup00:16:010
178539915414,41cyclictest32406-21uname20:35:420
178539915414,24cyclictest22348-21/usr/sbin/munin19:35:230
178539915414,120cyclictest877-21grep23:56:040
178539915412,120cyclictest112-21systemd-journal23:30:000
178539915410,28cyclictest26262-21apt20:00:010
178539915318,36cyclictest22644-21apt-get22:56:330
178539915316,23cyclictest8954-21df21:30:280
178539915313,117cyclictest31863-21snmpd00:40:050
178539915312,118cyclictest30332-21sh23:40:010
178539915312,115cyclictest19913-21/usr/sbin/munin19:20:340
178539915311,119cyclictest31682-21find23:45:580
178539915311,117cyclictest21796-21head22:46:040
178539915226,21cyclictest0-21swapper19:50:550
178539915216,113cyclictest20952-21memory19:25:460
178539915214,23cyclictest24665-21munin-run19:50:010
178539915212,117cyclictest5675-21awk00:25:580
178539915211,120cyclictest12294-21apt-get21:50:210
178539915119,104cyclictest8059-21apt-get21:25:200
178539915115,37cyclictest11170-21munin-run21:45:030
178539915115,113cyclictest30702-21wc20:25:240
178539915114,111cyclictest32162-21df_inode23:50:300
178539915112,24cyclictest14340-21find22:00:580
17853991509,25cyclictest15143-21fgrep22:06:010
178539915021,101cyclictest2919-21diskstats00:10:360
178539915018,29cyclictest4279-21memory21:00:460
178539915018,106cyclictest21950-21apt-get22:50:170
178539915014,94cyclictest29247-21/usr/sbin/munin23:31:030
178539915014,38cyclictest27659-21head23:21:120
178539915014,112cyclictest20239-21munin-run22:40:020
178539915012,29cyclictest17446-21ntpq22:20:500
178539915011,116cyclictest5397-21cat21:06:080
178539914926,34cyclictest0-21swapper22:40:450
178539914915,109cyclictest17941-21apt-get22:25:230
178539914913,49cyclictest7259-21/usr/sbin/munin21:20:570
178539914913,23cyclictest26560-21irqstats20:00:400
178539914912,27cyclictest25062-21systemctl23:06:030
178539914911,39cyclictest6570-21awk00:31:020
178539914910,116cyclictest27607-21find20:05:560
178539914829,22cyclictest112-21systemd-journal21:20:000
178539914815,110cyclictest31863-21snmpd00:20:580
178539914815,109cyclictest23797-21/usr/sbin/munin23:00:300
178539914812,114cyclictest30210-21wc20:20:570
178539914811,114cyclictest1053-21/usr/sbin/munin20:40:580
17853991479,25cyclictest17069-21wc22:20:060
178539914720,27cyclictest31541-21diskstats20:30:340
178539914716,24cyclictest30458-21apt-get23:40:170
178539914715,107cyclictest13088-21apt-get21:55:140
178539914712,110cyclictest23818-21grep19:41:040
178539914711,22cyclictest19396-21ntp_states19:16:070
178539914634,87cyclictest25979-21wc23:11:040
178539914633,94cyclictest1923-21latency_hist00:05:030
178539914520,102cyclictest29715-21apt20:20:020
178539914412,24cyclictest15793-21tr22:10:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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