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2025-09-17 - 10:40

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 792 highest latencies:
System rack5slot7s.osadl.org (updated Wed Sep 17, 2025 00:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21896224632205,97sleep00-21swapper19:06:080
223739916239,23cyclictest29759-21cpu23:15:220
223739915914,120cyclictest5079-21head20:36:010
22373991589,122cyclictest20569-21apt-get22:21:420
223739915818,116cyclictest26939-21df_inode19:35:330
223739915815,119cyclictest15816-21df21:45:280
223739915815,116cyclictest27654-21ntpq23:00:480
223739915813,121cyclictest928-21apt-get20:16:240
223739915617,24cyclictest5448-21df00:05:270
223739915614,38cyclictest27756-21df19:40:270
223739915611,26cyclictest6185-21diskstats20:45:310
22373991559,104cyclictest9387-21sshd21:05:270
223739915520,108cyclictest11708-21apt-get21:20:220
223739915518,111cyclictest2236-21df_inode23:45:280
223739915517,24cyclictest7652-21munin-run00:20:020
223739915511,26cyclictest984-21wc20:15:070
223739915438,20cyclictest3587-21latency_hist20:30:040
223739915417,25cyclictest3832-21df_inode23:55:270
223739915410,25cyclictest28449-21/usr/sbin/munin19:46:080
223739915336,23cyclictest17962-21/usr/sbin/munin21:56:050
223739915320,37cyclictest2720-21users20:21:110
223739915317,111cyclictest16512-21apt-get21:50:170
223739915221,104cyclictest4664-21diskstats00:00:360
223739915217,94cyclictest23573-21df19:15:280
223739915215,21cyclictest11588-21munin-run21:20:030
223739915213,115cyclictest9766-21/usr/sbin/munin00:30:380
223739915212,117cyclictest19345-21awk22:10:440
223739915116,38cyclictest23183-21munin-node19:15:080
223739915114,114cyclictest26162-21wc22:50:560
223739915112,46cyclictest23390-21cstates22:35:260
223739915042,87cyclictest1529-21kernelversion23:40:440
223739915031,22cyclictest0-21swapper21:35:530
223739915021,31cyclictest0-21swapper19:31:000
223739915016,96cyclictest18373-21memory22:00:440
223739915014,113cyclictest24935-21/usr/sbin/munin22:45:390
223739915012,111cyclictest7153-21grep20:50:480
22373991499,116cyclictest32400-21apt-config20:10:070
22373991497,26cyclictest3730-21cstates20:30:220
223739914921,28cyclictest5278-21apt-get20:40:220
223739914921,28cyclictest25891-21users19:26:030
223739914920,25cyclictest6144-21apt-get00:10:170
223739914914,106cyclictest30040-21/usr/sbin/munin19:55:530
223739914913,25cyclictest20682-21dpkg22:20:100
223739914913,111cyclictest12575-21cat21:25:270
223739914838,89cyclictest13453-21if_eth021:30:380
223739914817,37cyclictest23277-21munin-node21:10:580
223739914816,30cyclictest23190-21sshd22:31:440
223739914815,35cyclictest333-21grep23:31:050
223739914815,24cyclictest9494-21munin-run00:30:010
223739914815,22cyclictest8699-21apt00:25:010
223739914717,105cyclictest24441-21apt-get19:20:180
223739914716,94cyclictest10504-21diskstats00:35:360
223739914715,21cyclictest27325-21sort23:00:060
223739914713,112cyclictest31203-21sed23:21:030
223739914712,94cyclictest15287-21grep21:40:550
223739914711,107cyclictest8486-21/usr/sbin/munin21:00:380
22373991468,20cyclictest8202-21threads20:56:010
223739914617,21cyclictest0-21swapper22:40:480
223739914610,113cyclictest2821-21snmpd23:35:490
223739914515,22cyclictest21723-21apt-get22:25:270
22373991449,25cyclictest29670-21cat23:15:030
223739914428,21cyclictest0-21swapper23:25:120
223739914416,24cyclictest30867-21apt-get20:00:210
223739914415,24cyclictest28256-21/usr/sbin/munin23:05:250
223739914318,25cyclictest3028-21df23:50:270
223739914114,26cyclictest29308-21/usr/sbin/munin19:50:220
223739913815,98cyclictest18931-21sshd22:06:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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