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2026-10-08 - 05:06

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 Thu Oct 08, 2026 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18224224422198,97sleep00-21swapper19:07:420
185269916111,106cyclictest18203-21grep22:20:560
185269916019,24cyclictest20860-21apt22:40:010
185269916018,115cyclictest26086-21apt-get23:10:350
185269915819,25cyclictest13729-21apt-get21:55:180
185269915819,112cyclictest27279-21apt-get20:00:180
185269915816,26cyclictest5484-21apt-get21:05:190
185269915812,122cyclictest313-21modprobe20:35:000
185269915718,93cyclictest21429-21/usr/sbin/munin19:25:130
185269915717,37cyclictest4905-21apt-get00:21:510
185269915713,120cyclictest7789-21munin-run21:20:020
185269915614,26cyclictest4910-21munin-run00:20:020
185269915614,117cyclictest23086-21apt-get19:35:240
185269915612,102cyclictest31288-21/usr/sbin/munin20:25:460
185269915611,26cyclictest29742-21wc20:15:210
185269915535,19cyclictest3352-21ntp_kernel_err20:50:470
185269915513,101cyclictest24182-21sort23:00:070
185269915510,118cyclictest1496-21/usr/sbin/munin20:40:330
185269915413,29cyclictest7992-21apt-config21:20:170
185269915413,120cyclictest4570-21munin-run21:00:020
185269915411,117cyclictest24439-21ps19:41:000
185269915320,106cyclictest6946-21df00:30:290
185269915319,108cyclictest6055-21apt-get00:25:250
185269915314,114cyclictest864-21awk20:35:540
185269915313,117cyclictest21226-21memory22:40:410
185269915311,119cyclictest16882-21snmpd23:16:050
185269915310,30cyclictest14837-21grep22:00:470
185269915310,120cyclictest2791-21sort20:46:070
185269915238,22cyclictest25041-21irqstats19:45:400
185269915222,29cyclictest21281-21apt-get19:24:190
185269915217,36cyclictest19332-21munin-node19:15:070
185269915217,105cyclictest3400-21apt-get00:10:210
185269915215,110cyclictest2599-21/usr/sbin/munin00:05:280
185269915213,118cyclictest32638-21kworker/u2:523:50:050
185269915211,116cyclictest24892-21apt-get23:06:300
185269915118,92cyclictest11224-21munin-run21:40:030
185269915116,25cyclictest1095-21diskstats23:55:310
185269915116,23cyclictest30497-21apt-get20:20:180
185269915114,41cyclictest30148-21sort23:35:030
185269915113,99cyclictest8337-21latency_hist00:40:010
185269915016,27cyclictest12136-21/usr/sbin/munin21:45:110
185269915016,21cyclictest20062-21munin-plugin-st22:35:010
185269915013,113cyclictest31815-21cat23:45:040
185269915012,24cyclictest24874-21sshd23:02:220
185269915012,114cyclictest22921-21munin-run19:35:020
185269915011,99cyclictest6872-21grep21:11:050
185269915010,118cyclictest28545-21munin-run23:25:010
18526991499,26cyclictest23206-21unixbench_singl22:51:010
185269914934,91cyclictest30485-21sort23:35:470
185269914916,32cyclictest32506-21users23:46:070
185269914911,40cyclictest11963-21unixbench_singl21:41:000
185269914910,115cyclictest16921-21latency_hist22:15:050
185269914831,23cyclictest27144-21modprobe20:00:010
185269914830,22cyclictest15897-21ls22:06:020
185269914818,25cyclictest25662-21apt-get19:50:160
185269914815,26cyclictest4690-21apt-get21:00:130
185269914815,21cyclictest0-21swapper22:15:470
185269914811,112cyclictest28927-21ntp_kernel_err23:25:460
185269914810,115cyclictest10043-21sshd21:30:510
18526991479,115cyclictest22225-21readlink22:45:580
185269914715,20cyclictest0-21swapper20:15:010
185269914710,50cyclictest8932-21/usr/sbin/munin21:25:320
185269914618,103cyclictest13106-21irqstats21:50:380
185269914610,24cyclictest20346-21grep19:16:190
185269914531,19cyclictest0-21swapper20:05:230
185269914517,108cyclictest18744-21irqstats22:25:370
185269914411,36cyclictest2587-21sort00:05:050
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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