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2026-03-28 - 22:48

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 28, 2026 12:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28165224232188,90sleep00-21swapper07:08:470
283469916234,108cyclictest4248-21latency_hist08:00:020
28346991609,25cyclictest3054-21apt-get11:11:280
283469916019,25cyclictest17969-21munin-run12:40:030
283469915916,102cyclictest31282-21munin-run10:45:020
283469915913,120cyclictest10891-21cron08:40:020
283469915746,88cyclictest10770-21interrupts11:55:370
283469915719,112cyclictest16850-21apt-get09:15:210
283469915619,108cyclictest19277-21apt-get09:30:170
283469915617,22cyclictest5066-21apt-get08:06:020
283469915616,121cyclictest29105-21users07:11:070
283469915614,118cyclictest32317-21ntp_states07:30:520
283469915518,111cyclictest4185-21apt-get11:15:270
283469915513,116cyclictest15523-21head12:22:070
283469915513,116cyclictest10905-21apt-get08:41:350
283469915511,119cyclictest31187-21cat07:25:060
283469915418,114cyclictest8462-21memory11:40:430
283469915411,116cyclictest11426-21/usr/sbin/munin12:00:340
283469915411,100cyclictest32302-21modprobe10:50:000
283469915327,104cyclictest15206-21latency_hist09:05:050
283469915315,37cyclictest27251-21munin-run10:20:020
283469915314,26cyclictest5432-21zcat11:20:550
283469915313,116cyclictest272-21snmpd07:40:480
283469915312,26cyclictest6430-21grep11:26:020
283469915310,41cyclictest272-21snmpd07:16:170
283469915310,28cyclictest30391-21grep10:36:020
28346991529,118cyclictest1449-21systemctl11:00:010
283469915230,39cyclictest15677-21apt-get12:25:160
283469915217,25cyclictest3056-21munin-run11:10:020
283469915214,20cyclictest7933-21diskstats08:20:330
283469915212,116cyclictest16750-21munin-run09:15:020
283469915211,24cyclictest32620-21sort10:50:490
283469915211,116cyclictest7363-21grep11:35:040
283469915119,24cyclictest1957-21apt-get07:45:150
283469915115,114cyclictest272-21snmpd07:36:160
283469915113,26cyclictest20893-21/usr/sbin/munin09:40:480
283469915018,26cyclictest7400-21apt-get11:35:180
283469915016,31cyclictest9922-21diskstats11:50:320
283469915015,113cyclictest14341-21apt09:00:010
283469915014,25cyclictest9412-21apt-get08:30:190
283469915012,50cyclictest29620-21uptime10:31:050
283469915010,120cyclictest5164-21cat08:05:080
283469914920,26cyclictest8857-21memory08:25:420
283469914916,23cyclictest111-21systemd-journal10:08:150
283469914915,21cyclictest13541-21apt08:55:010
283469914915,111cyclictest22662-21irqstats09:50:390
283469914914,113cyclictest3287-21sort07:51:020
283469914914,113cyclictest20691-21grep09:36:010
283469914911,115cyclictest7175-21uname08:15:400
283469914817,91cyclictest22385-21apt09:50:010
283469914815,109cyclictest13818-21apt-get12:15:180
283469914811,22cyclictest16978-21grep12:31:010
283469914811,114cyclictest12056-21apt-get08:45:200
28346991479,24cyclictest23895-21sed09:56:000
28346991479,115cyclictest26129-21wc10:10:560
28346991478,25cyclictest31911-21grep07:30:020
283469914721,26cyclictest24106-21apt-get10:00:220
283469914716,107cyclictest17862-21irqstats09:20:390
283469914715,23cyclictest6196-21apt08:10:150
283469914626,21cyclictest0-21swapper09:25:390
283469914619,25cyclictest13384-21/usr/sbin/munin12:10:520
283469914617,26cyclictest15359-21df09:05:260
283469914613,26cyclictest1695-21fw_packets11:00:370
283469914613,26cyclictest12217-21kworker/u2:212:05:050
283469914611,109cyclictest9581-21timerandwakeup11:46:040
283469914517,105cyclictest28277-21diskstats10:25:340
283469914412,90cyclictest28052-21cron10:25:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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