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2026-07-15 - 20:42

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 Wed Jul 15, 2026 12:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26669224562212,99sleep00-21swapper07:07:580
269419916312,122cyclictest16673-21grep09:21:390
269419916210,127cyclictest10267-21unixbench_singl08:41:030
269419916011,108cyclictest29728-21latency_hist07:25:040
269419915814,121cyclictest22621-21apt-get10:01:040
269419915813,25cyclictest30591-21/usr/sbin/munin07:30:360
269419915716,27cyclictest12653-21/usr/sbin/munin12:15:410
269419915714,119cyclictest16575-21munin-run12:40:020
269419915636,20cyclictest32178-21ls07:40:070
269419915632,21cyclictest25257-21apt-get10:16:030
269419915621,27cyclictest9444-21apt-get11:55:220
269419915617,115cyclictest12708-21users08:56:050
269419915611,23cyclictest24770-21latency10:10:410
269419915517,23cyclictest5903-21apt-get11:35:560
269419915516,116cyclictest5521-21irqstats08:15:410
269419915515,111cyclictest14283-21apt-get12:25:190
269419915415,38cyclictest2312-21irqstats07:55:390
269419915415,115cyclictest15973-21apt09:20:020
269419915410,23cyclictest14136-21cut09:06:000
26941991539,39cyclictest7786-21/usr/sbin/munin08:30:090
269419915318,39cyclictest3495-21munin-run11:20:020
269419915315,25cyclictest20648-21grep09:45:500
269419915312,117cyclictest27332-21/usr/sbin/munin10:25:330
269419915311,120cyclictest9424-21grep08:36:100
269419915215,99cyclictest2514-21sort11:11:010
269419915215,24cyclictest1350-21sshd11:05:400
269419915215,113cyclictest13660-21irqstats12:20:400
269419915211,99cyclictest8610-21grep11:50:040
269419915210,119cyclictest10709-21awk12:00:570
269419915139,91cyclictest3421-21mailstats08:00:580
269419915131,20cyclictest0-21swapper12:10:560
269419915118,27cyclictest28189-21/usr/sbin/munin10:30:360
269419915117,25cyclictest6181-21apt-get08:20:190
269419915116,111cyclictest30894-21cut10:45:570
269419915115,22cyclictest11428-21sshd08:50:400
269419915114,23cyclictest5719-21grep11:31:060
269419915114,113cyclictest581-21sed11:00:390
269419915113,114cyclictest22335-21awk09:55:560
269419915111,116cyclictest14756-21tr09:10:470
269419915031,19cyclictest19949-21awk09:40:550
269419915016,111cyclictest28879-21apt07:20:020
269419915015,111cyclictest3615-21apt-get11:20:150
269419915012,113cyclictest4986-21cat11:26:000
269419915011,24cyclictest7680-21http08:30:050
269419915010,113cyclictest11095-21sed08:46:040
26941991499,25cyclictest1609-21grep07:50:470
26941991498,117cyclictest29245-21wc10:35:580
269419914926,20cyclictest0-21swapper08:10:260
269419914915,110cyclictest32386-21irqstats07:40:400
269419914913,93cyclictest15379-21ntp_kernel_pll_12:30:480
269419914912,25cyclictest23944-21irqstats10:05:490
269419914912,23cyclictest17564-21awk09:26:040
269419914838,19cyclictest11255-21kernelversion12:05:410
269419914811,116cyclictest4129-21grep08:05:560
269419914736,19cyclictest12981-21df_inode09:00:290
269419914721,98cyclictest29798-21apt-get07:25:200
269419914716,105cyclictest29739-21df10:40:260
269419914712,24cyclictest19158-21mailstats09:35:580
269419914712,116cyclictest21299-21irqstats09:50:390
269419914672,34cyclictest31231-21/usr/sbin/munin10:50:120
269419914617,23cyclictest27733-21munin-run07:15:030
269419914615,44cyclictest1079-21cat07:46:000
269419914614,46cyclictest18045-21fw_packets09:30:340
269419914512,37cyclictest7308-21wc11:40:520
26941991448,114cyclictest7155-21snmpd11:55:030
269419914411,25cyclictest32761-21wc11:00:050
269419914411,24cyclictest26938-21ls10:21:070
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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