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2025-07-19 - 10:55

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 Sat Jul 19, 2025 00:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12085224362197,97sleep00-21swapper19:09:520
121439916440,102cyclictest30250-21/usr/sbin/munin20:55:290
121439916129,111cyclictest4713-21grep21:36:050
121439916016,120cyclictest22373-21apt-get20:11:580
121439915618,94cyclictest16445-21apt-get22:50:320
121439915618,25cyclictest15064-21apt-get19:25:180
121439915616,25cyclictest12896-21users19:11:080
121439915616,24cyclictest27905-21irqstats20:41:080
121439915615,112cyclictest27016-21ntpq20:35:520
121439915516,40cyclictest13598-21users22:31:080
121439915514,26cyclictest15251-21apt-get22:46:580
121439915513,24cyclictest3171-21users21:26:070
121439915430,103cyclictest1649-21modprobe00:40:000
121439915429,21cyclictest0-21swapper00:06:040
121439915414,24cyclictest22291-21users20:06:080
121439915414,115cyclictest1597-21munin-run21:20:020
121439915410,25cyclictest7732-21find21:55:560
121439915314,116cyclictest29760-21awk20:50:580
121439915312,28cyclictest11632-21ntpq22:20:490
121439915311,27cyclictest14497-21/usr/sbin/munin19:20:530
12143991529,120cyclictest22029-21head23:21:030
121439915221,29cyclictest24438-21diskstats20:20:340
121439915219,106cyclictest32554-21apt-get21:10:190
121439915214,29cyclictest17794-21sshd22:56:070
121439915212,26cyclictest15261-21latency_hist22:45:050
121439915211,119cyclictest26610-21munin-plugin-st20:35:010
121439915116,112cyclictest17471-21users19:36:080
121439915114,112cyclictest8399-21sort22:00:470
121439915113,27cyclictest20350-21sort23:10:590
121439915113,24cyclictest600-21awk00:30:570
121439915113,117cyclictest29406-21/usr/sbin/munin00:10:140
121439915113,116cyclictest24161-21wc23:35:540
121439915112,22cyclictest22580-21grep23:25:540
121439915112,116cyclictest20650-21sed19:56:030
121439915017,107cyclictest9720-21apt-get22:10:180
121439915016,22cyclictest13848-21diskstats22:35:330
121439915014,23cyclictest25617-21cat23:45:400
121439915013,115cyclictest19236-21/usr/sbin/munin23:05:430
121439915013,114cyclictest6379-21users21:46:080
121439915011,22cyclictest24055-21grep20:16:070
121439915010,27cyclictest30832-21grep00:16:040
121439915010,24cyclictest9172-21grep22:05:450
121439914920,26cyclictest20899-21ntp_states23:15:510
121439914912,97cyclictest268-21snmpd19:30:180
121439914912,24cyclictest112-21systemd-journal23:55:010
121439914910,116cyclictest112-21systemd-journal22:20:010
121439914826,22cyclictest0-21swapper19:45:520
121439914819,105cyclictest25778-21users20:26:080
121439914817,106cyclictest13285-21irqstats19:15:230
121439914816,44cyclictest31857-21df21:05:250
121439914815,24cyclictest21083-21memory20:00:440
121439914814,93cyclictest31726-21apt00:25:010
121439914812,38cyclictest3675-21ps21:30:530
121439914811,114cyclictest2345-21sed21:21:060
121439914714,35cyclictest31265-21tr21:00:480
121439914711,23cyclictest23005-21apt-get23:30:150
121439914616,26cyclictest17751-21diskstats19:40:350
121439914614,107cyclictest26996-21/usr/sbin/munin23:55:240
121439914527,21cyclictest0-21swapper23:00:360
121439914513,109cyclictest5182-21/usr/sbin/munin21:40:440
121439914512,110cyclictest6768-21sort21:50:460
121439914510,28cyclictest28559-21/usr/sbin/munin20:45:130
121439914510,114cyclictest19332-21df_inode19:50:280
121439914416,106cyclictest12248-21df22:25:240
121439914414,106cyclictest24914-21ntpq23:40:480
121439914410,113cyclictest28027-21cat00:00:420
121439914312,108cyclictest31946-21/usr/sbin/munin00:25:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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