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2025-10-29 - 03:55

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 the 376 highest latencies:
System rack5slot7s.osadl.org (updated Wed Oct 29, 2025 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7857224342195,93sleep00-21swapper19:08:090
81099916014,25cyclictest11682-21apt-get22:45:180
81099915919,115cyclictest12459-21apt-get19:36:590
81099915918,117cyclictest28250-21df_inode00:25:310
81099915918,117cyclictest26812-21apt21:00:020
81099915914,120cyclictest6856-21diskstats22:15:330
81099915816,118cyclictest24716-21find20:45:580
81099915716,26cyclictest29841-21df_inode00:35:280
81099915716,25cyclictest22337-21apt-get20:35:520
81099915714,116cyclictest19283-21/usr/sbin/munin23:30:300
81099915712,121cyclictest20448-21ps23:35:540
81099915711,106cyclictest8571-21wc19:11:020
81099915532,22cyclictest15729-21apt-get23:11:460
81099915516,108cyclictest4358-21apt-get22:00:180
81099915513,117cyclictest30037-21apt-get21:21:520
81099915512,117cyclictest25216-21gpgv20:50:160
81099915438,23cyclictest5579-21sendmail_mailqu22:05:570
81099915419,97cyclictest10079-21df_inode22:35:300
81099915412,117cyclictest22058-21/usr/sbin/munin23:45:540
81099915317,22cyclictest6644-21apt22:15:010
81099915315,114cyclictest25962-21memory00:10:430
81099915313,25cyclictest2990-21sort21:50:460
81099915311,23cyclictest31451-21wc21:25:530
81099915310,39cyclictest13619-21sshd19:40:210
81099915217,25cyclictest25101-21irqstats00:05:430
81099915216,22cyclictest30042-21munin-run21:20:020
81099915214,117cyclictest21748-21df_inode20:30:300
81099915212,28cyclictest2150-21grep21:45:430
8109991519,120cyclictest19187-21modprobe23:30:010
81099915126,35cyclictest0-21swapper22:41:030
81099915116,37cyclictest973-21users21:36:170
81099915115,37cyclictest11873-21df_inode19:30:320
81099915115,25cyclictest16704-21munin-run20:00:030
81099915115,25cyclictest15104-21munin-run19:50:020
81099915110,116cyclictest13040-21grep22:51:050
81099915018,26cyclictest16824-21apt-get20:00:210
81099915018,25cyclictest15145-21diskstats23:05:300
81099915015,26cyclictest23304-21/usr/sbin/munin23:55:130
81099915015,22cyclictest27232-21munin-run00:20:020
81099915014,109cyclictest3535-21apt-get21:55:170
81099915012,113cyclictest8221-21sed22:21:060
81099915012,113cyclictest19737-21cat20:16:070
8109991499,25cyclictest112-21systemd-journal23:05:000
81099914934,22cyclictest18002-21ntp_offset23:20:570
81099914916,23cyclictest17941-21/usr/sbin/munin20:05:550
81099914914,114cyclictest1249-21df_inode21:40:300
81099914914,113cyclictest20943-21df20:25:250
81099914914,112cyclictest9049-21sshd22:26:300
81099914913,108cyclictest26934-21/usr/sbin/munin21:00:230
81099914911,40cyclictest17223-21proc_pri23:16:020
81099914816,26cyclictest27584-21/usr/sbin/munin00:20:430
81099914814,27cyclictest10457-21ntpq19:20:510
81099914813,23cyclictest29234-21tr00:30:510
81099914811,113cyclictest24423-21tr00:00:480
81099914811,112cyclictest27809-21seq21:05:240
81099914718,103cyclictest15204-21apt-get19:50:130
81099914711,112cyclictest23234-21grep23:55:030
81099914710,114cyclictest20631-21sort20:21:060
8109991469,116cyclictest18925-21wc20:11:010
8109991468,116cyclictest13698-21ntpq22:55:470
81099914627,24cyclictest0-21swapper21:11:000
81099914620,18cyclictest21696-21latency_hist23:45:060
81099914618,28cyclictest11076-21df_inode19:25:310
81099914615,105cyclictest9496-21sshd19:15:530
81099914611,116cyclictest21644-21kworker/u2:620:40:210
81099914417,23cyclictest9833-21users22:31:080
81099914018,24cyclictest32082-21df21:30:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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