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2026-05-17 - 09:26

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #6

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 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack4slot6s.osadl.org (updated Sun May 17, 2026 00:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1231522940,3sleep012316-21date22:40:020
2794522480,2sleep027946-21latency_hist21:35:010
1898422420,3sleep018988-21load23:05:160
2586121420,2sleep025860-21ntp_states19:20:210
484221380,2sleep04844-21grep00:15:260
859721310,4chrt8589-21ntp_states00:30:240
853421260,3chrt8533-21awk22:25:130
1507421200,2sleep015076-21wc22:50:180
1136221110,4sleep011371-21latency20:30:170
1276421080,4sleep012782-21ntp_states20:35:200
215602980,4sleep021650-21latency_hist19:05:010
21882970,4sleep02244-21grep00:05:240
291832960,3chrt29186-21idleruntime-cro21:40:010
291352940,3sleep029136-21/usr/sbin/munin23:45:110
180102940,3sleep018008-21grep20:55:250
322932916,11sleep032297-21users23:55:300
101262890,4sleep010186-21ntp_kernel_err20:25:190
309012886,9sleep030930-21awk21:45:250
309372826,64sleep031009-21users23:50:290
59802790,3sleep05984-21ntp_kernel_err00:20:200
217472795,64sleep021803-21/usr/sbin/munin21:10:210
230302786,60sleep023036-21df_inode19:10:150
37482770,4sleep03814-21switchtime22:05:270
282932760,2chrt28292-21cat19:30:290
22874996325,15cyclictest114-21systemd-journal19:55:000
141992620,3sleep014249-21which20:40:260
2287499619,16cyclictest4869-21ntpq22:10:200
22874996135,17cyclictest27818-21runrttasks19:28:250
22874996111,16cyclictest5875-21/usr/sbin/munin22:15:290
2287499608,17cyclictest24037-21tr21:20:010
22874996036,15cyclictest30993-21/usr/sbin/munin19:40:210
22874996035,15cyclictest25220-21runrttasks21:24:150
22874996034,17cyclictest17706-21/usr/sbin/munin23:00:190
22874996010,17cyclictest25437-21munin-run19:20:000
2287499598,17cyclictest13635-21/usr/sbin/munin22:45:220
2287499589,17cyclictest26543-21/usr/sbin/munin23:35:270
2287499589,17cyclictest24122-21irqstats23:25:170
2287499588,16cyclictest4724-21/usr/sbin/munin20:05:300
2287499588,16cyclictest29424-21/usr/sbin/munin19:35:290
2287499588,16cyclictest22554-21awk23:20:010
2287499587,18cyclictest2121-21/usr/sbin/munin19:55:270
22874995833,16cyclictest30334-21runrttasks21:43:520
22874995823,13cyclictest1731-21sshd21:58:570
22874995811,17cyclictest216-21rs:main0
22874995810,14cyclictest7858-21sshd22:20:570
34822573,42sleep00-21swapper20:00:110
2287499579,18cyclictest31884-21/usr/sbin/munin21:50:250
2287499579,15cyclictest20557-21ntp_states21:05:240
22874995732,15cyclictest15205-21/usr/sbin/munin20:45:140
22874995731,17cyclictest26028-21/usr/sbin/munin21:25:290
22874995731,16cyclictest23189-21/usr/sbin/munin23:20:260
22874995730,17cyclictest1358-21runrttasks00:02:050
22874995717,15cyclictest105092chrt22:31:410
22874995710,15cyclictest25262-21/usr/sbin/munin23:30:140
2287499569,18cyclictest276-21runrttasks22:55:160
2287499569,15cyclictest27904-21/usr/sbin/munin23:40:120
2287499568,16cyclictest2078-21df_inode22:00:130
2287499567,16cyclictest9578-21/usr/sbin/munin00:35:240
22874995634,14cyclictest19361-21/usr/sbin/munin21:00:260
22874995633,15cyclictest20618-21/usr/sbin/munin23:10:260
22874995633,14cyclictest12960-21/usr/sbin/munin22:40:300
22874995632,16cyclictest6236-21/usr/sbin/munin20:10:150
22874995631,17cyclictest7436-21/usr/sbin/munin20:15:140
2287499558,14cyclictest16374-21/usr/sbin/munin20:50:240
22874995532,16cyclictest32161-21irqstats19:45:150
22874995530,15cyclictest7719-21runrttasks00:26:200
22874995410,17cyclictest3271-21irqstats00:10:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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