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2025-05-09 - 07:23

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 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 376 highest latencies:
System rack4slot6s.osadl.org (updated Fri May 09, 2025 00:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
950422360,2sleep09505-21latency_hist21:25:000
1142521380,3chrt11427-21ntp_offset19:25:220
2515221350,3chrt25154-21open_files00:30:260
1075921220,2sleep010758-21/usr/sbin/munin23:35:150
1253721190,2sleep012536-21if_eth019:30:160
1847221030,4sleep018408-21/usr/sbin/munin00:05:150
224521020,4sleep02257-21/usr/sbin/munin23:00:300
238082980,3sleep023858-21df22:20:110
70702960,4sleep07098-21ntpq23:20:260
84232900,2sleep08424-21ls19:15:000
278062895,11sleep027846-21memory22:35:200
303142888,65sleep030317-21cron20:40:020
268622880,3sleep026861-21ntp_kernel_err20:25:220
120972880,4sleep012114-21/usr/sbin/munin23:40:180
317142875,9sleep031716-21memory22:50:200
86942857,66sleep08548-21/usr/sbin/munin19:15:190
223612810,2sleep022359-21forks00:20:150
621127918,34sleep06242-21ntp_offset19:05:180
81512755,59sleep08159-21df23:25:160
189252756,56sleep018938-21ntp_states22:00:230
171002703,5sleep00-21swapper21:54:090
182042653,10sleep00-21swapper00:04:250
7168996210,16cyclictest19937-21/usr/sbin/munin22:05:330
716899609,16cyclictest27945-21chrt20:30:130
716899609,16cyclictest17334-21/usr/sbin/munin21:55:180
716899608,17cyclictest22734-21/usr/sbin/munin20:10:190
7168996032,17cyclictest15093-21/usr/sbin/munin21:45:260
716899599,17cyclictest10908-21/usr/sbin/munin21:30:250
716899599,16cyclictest279-21sshd21:35:170
716899598,18cyclictest108-21systemd-journal21:16:110
7168995918,16cyclictest15504-21/usr/sbin/munin19:40:260
7168995910,17cyclictest5815-21/usr/sbin/munin23:15:240
7168995910,16cyclictest9854-21/usr/sbin/munin19:20:170
7168995910,15cyclictest26418-21ntp_states00:35:220
716899589,17cyclictest108-21systemd-journal20:07:110
716899588,17cyclictest2361-21wc20:55:290
716899588,16cyclictest25325-21/usr/sbin/munin20:20:280
716899588,16cyclictest23565-21/usr/sbin/munin00:25:150
716899587,19cyclictest339-21/usr/sbin/munin22:55:310
7168995834,16cyclictest13748-21/usr/sbin/munin23:45:280
7168995815,15cyclictest9714-21/usr/sbin/munin21:25:200
7168995812,17cyclictest6031-21ntp_states21:10:240
7168995810,16cyclictest31763-21/usr/sbin/munin20:45:200
7168995810,16cyclictest19693-21/usr/sbin/munin00:10:310
716899579,15cyclictest26373-21/usr/sbin/munin22:30:190
716899577,16cyclictest4455-21/usr/sbin/munin21:05:270
716899569,13cyclictest22792-21ntp_states22:15:250
716899567,16cyclictest3750-21seq23:07:130
7168995633,14cyclictest14064-21/usr/sbin/munin21:40:290
716899559,21cyclictest4281-21df_inode23:10:140
716899559,19cyclictest17875-21chrt19:50:240
716899559,15cyclictest19148-21ntp_states19:55:230
716899557,16cyclictest28965-21/usr/sbin/munin22:40:210
716899556,15cyclictest10521-21seq23:34:590
7168995533,15cyclictest25428-21/usr/sbin/munin22:25:260
7168995533,14cyclictest30531-21/usr/sbin/munin20:40:110
7168995531,15cyclictest21650-21runrttasks00:16:080
7168995531,15cyclictest13971-21/usr/sbin/munin19:35:210
7168995514,13cyclictest279-21sshd20:00:120
7168995510,19cyclictest16983-21systemctl00:00:010
716899549,15cyclictest14594-21/usr/sbin/munin23:50:130
716899548,18cyclictest3314-21irqstats21:00:190
716899548,18cyclictest24599-21users20:15:290
716899548,17cyclictest763-21memory20:50:160
716899548,17cyclictest16736-21sendmail_mailtr19:45:270
716899548,14cyclictest21486-21ntpq22:10:210
7168995429,15cyclictest31322-21runrttasks22:49:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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