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2026-03-21 - 16:01

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 Mar 21, 2026 12:45:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24186224442203,96sleep00-21swapper07:09:560
242399916218,102cyclictest4422-21apt11:40:010
242399916020,111cyclictest24336-21apt-get07:10:210
242399916019,116cyclictest13735-21ntp_states09:16:320
242399915910,123cyclictest1124-21/usr/sbin/munin11:20:330
242399915841,94cyclictest5607-21apt-get08:30:140
242399915819,27cyclictest23746-21users10:16:050
242399915816,23cyclictest30960-21users07:46:040
242399915718,114cyclictest6138-21apt-get11:50:120
242399915717,39cyclictest21071-21/usr/sbin/munin10:00:540
242399915625,20cyclictest0-21swapper09:10:020
242399915614,26cyclictest30064-21awk10:56:010
242399915614,20cyclictest2822-21apt-get08:16:420
242399915534,22cyclictest12891-21awk09:10:570
242399915519,109cyclictest24723-21apt-get10:25:200
242399915514,39cyclictest5272-21cut08:26:000
242399915512,118cyclictest27429-21tr10:40:460
242399915511,119cyclictest9677-21cut08:50:580
242399915423,109cyclictest0-21swapper10:46:020
242399915415,115cyclictest30804-21cut11:00:560
242399915412,25cyclictest4288-21ntp_kernel_pll_08:20:550
242399915412,118cyclictest29356-21grep10:51:020
242399915333,22cyclictest7007-21grep08:36:240
242399915316,25cyclictest26414-21diskstats07:20:310
242399915313,100cyclictest990-21munin-run11:20:060
242399915219,105cyclictest16665-21apt-get09:35:190
242399915218,109cyclictest26179-21apt07:20:010
242399915217,23cyclictest4786-21memory11:40:410
242399915215,23cyclictest20583-21munin-run10:00:040
242399915213,23cyclictest27528-21find07:25:570
242399915211,117cyclictest13850-21kworker/u2:1209:20:130
242399915120,28cyclictest7042-21diskstats11:55:320
242399915118,26cyclictest2138-21apt-get11:25:240
242399915112,115cyclictest5937-21ls11:46:000
242399915112,115cyclictest2366-21tr08:10:460
242399915041,89cyclictest22768-21mailstats10:10:570
242399915037,95cyclictest11187-21sort12:20:420
242399915013,38cyclictest10832-21/usr/sbin/munin09:00:100
242399915013,25cyclictest19664-21/usr/sbin/munin09:51:000
242399915010,116cyclictest10788-21sed12:16:010
242399914921,101cyclictest1389-21df08:05:270
242399914916,110cyclictest29391-21munin-run07:40:030
242399914915,111cyclictest13797-21mailstats12:35:540
242399914914,26cyclictest12805-21memory12:30:430
242399914913,113cyclictest8592-21irqstats08:45:410
242399914912,117cyclictest31796-21apt-get07:55:340
242399914817,107cyclictest15175-21df09:25:270
242399914814,108cyclictest11769-21/usr/sbin/munin12:25:120
242399914811,116cyclictest19026-21sort09:50:040
242399914729,96cyclictest0-21swapper12:10:050
242399914719,26cyclictest23924-21apt-get10:20:210
242399914718,111cyclictest498-21apt-get08:00:140
242399914713,22cyclictest28256-21grep07:30:550
242399914713,110cyclictest30197-21modprobe07:45:000
242399914712,29cyclictest7919-21sshd08:40:550
242399914712,110cyclictest31097-21/usr/sbin/munin07:50:490
242399914711,113cyclictest21568-21cstates10:05:230
242399914635,90cyclictest31384-21missed_timers11:05:440
242399914627,98cyclictest17684-21kernelversion09:40:390
242399914627,101cyclictest10816-21latency_hist09:00:060
242399914618,26cyclictest8659-21df_inode12:05:290
242399914615,101cyclictest2932-21apt-get11:30:180
242399914614,107cyclictest15868-21/usr/sbin/munin09:30:370
242399914611,111cyclictest25817-21grep10:30:470
242399914518,25cyclictest8414-21users12:01:040
242399914418,25cyclictest32049-21diskstats11:10:340
242399914412,24cyclictest26430-21/usr/sbin/munin10:35:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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