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2026-05-25 - 13:15

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 Mon May 25, 2026 00:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11251224392201,96sleep00-21swapper19:09:430
113269916613,128cyclictest12106-21cron19:15:010
113269916115,36cyclictest3741-21apt-get21:41:050
113269915918,26cyclictest3746-21munin-run21:40:020
113269915914,121cyclictest18242-21head19:46:090
113269915818,117cyclictest29775-21apt21:00:020
11326991579,107cyclictest1514-21cpuspeed21:25:220
11326991569,122cyclictest2664-21awk21:30:540
113269915628,21cyclictest0-21swapper22:57:220
113269915615,116cyclictest29951-21munin-run00:20:030
113269915613,101cyclictest823-21interrupts21:20:370
113269915511,24cyclictest30070-21/usr/sbin/munin00:21:030
113269915511,120cyclictest5227-21open_files21:45:580
113269915434,22cyclictest23791-21/usr/sbin/munin20:21:000
113269915412,29cyclictest28013-21wc00:05:570
113269915411,42cyclictest13269-21latency_hist19:20:010
113269915324,21cyclictest0-21swapper00:25:540
113269915314,28cyclictest12261-21df22:30:270
113269915314,116cyclictest523-21modprobe21:20:010
113269915313,100cyclictest27954-21/usr/sbin/munin20:50:050
113269915312,117cyclictest24937-21cut23:47:020
113269915311,24cyclictest16471-21apt-get19:41:430
113269915279,51cyclictest13390-21munin-node19:20:110
113269915218,27cyclictest17107-21diskstats23:00:350
113269915218,106cyclictest18415-21apt-get19:50:200
113269915215,22cyclictest25894-21users23:51:110
113269915214,38cyclictest16202-21wc19:35:560
113269915213,23cyclictest21850-21/usr/sbin/munin23:30:230
113269915213,115cyclictest7230-21munin-run22:00:010
113269915213,115cyclictest14604-21grep19:25:560
113269915118,24cyclictest19207-21apt-get19:55:190
113269915116,36cyclictest20093-21munin-run23:20:030
113269915115,25cyclictest10664-21df22:20:250
113269915113,24cyclictest21701-21munin-plugin-st23:30:010
113269915112,113cyclictest27092-21memory00:00:440
113269915111,38cyclictest22884-21tr23:35:500
113269915110,117cyclictest25647-21sshd20:35:220
113269915074,52cyclictest7347-21/usr/sbin/munin22:00:110
113269915016,110cyclictest16031-21users22:51:070
113269915015,95cyclictest28120-21apt-get20:50:250
113269915015,28cyclictest20086-21/usr/sbin/munin20:00:220
113269915014,114cyclictest18440-21head23:06:010
113269915013,113cyclictest21623-21apt-get20:10:180
113269915012,115cyclictest26296-21sort23:55:450
113269914929,98cyclictest8146-21apt-get22:05:210
113269914916,24cyclictest5798-21diskstats21:50:350
113269914915,110cyclictest30801-21df_inode21:05:300
113269914913,24cyclictest20577-21wc23:20:530
113269914912,114cyclictest23959-21awk23:41:000
113269914816,24cyclictest9113-21irqstats22:10:390
113269914816,109cyclictest32358-21munin-run00:35:030
113269914814,21cyclictest31731-21memory21:10:470
113269914812,39cyclictest29171-21ls00:15:040
113269914812,25cyclictest25496-21sed20:31:040
113269914720,25cyclictest29901-21apt-get21:00:170
113269914717,23cyclictest15083-21df19:30:270
113269914716,93cyclictest23131-21munin-run20:20:030
113269914715,21cyclictest13778-21apt-get22:40:170
113269914713,22cyclictest13068-21diskstats22:35:340
113269914712,112cyclictest12143-21sort22:30:050
113269914711,115cyclictest26749-21grep20:40:480
113269914620,25cyclictest20938-21df_inode20:05:310
113269914616,106cyclictest18586-21apt-get23:10:160
113269914611,113cyclictest10495-21wc22:20:040
113269914531,19cyclictest0-21swapper20:25:570
113269914515,25cyclictest689-21modprobe00:40:010
113269914412,29cyclictest14704-21if_err_eth022:45:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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