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2025-07-12 - 08:38

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 all highest latencies:
System rack4slot6s.osadl.org (updated Sat Jul 12, 2025 00:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
964321510,3sleep09642-21if_err_eth020:15:150
1812021500,3chrt18121-21sshd20:47:180
998521380,3chrt9983-21users22:20:300
2487821380,2sleep024877-21munin-node23:20:110
63421300,4chrt635-21sh21:45:230
1369821280,3chrt13699-21/usr/sbin/munin20:30:210
1503721250,3sleep015036-21proc_pri20:35:260
1082721020,4sleep010891-21run-parts00:30:280
1762421010,4sleep017696-21timerwakeupswit22:50:310
55192960,2sleep05531-21modprobe20:00:000
282312957,12sleep028241-21users21:25:310
17782925,10sleep01817-21memory21:50:220
58232880,3sleep05876-21processes22:05:260
242942857,11sleep024347-21users21:10:290
45772830,4sleep04657-21cut22:00:290
299382820,3sleep029940-21sort23:40:010
33562810,2sleep03355-21ntp_kernel_pll_19:50:220
214442806,62sleep021508-21threads23:05:270
109472730,2sleep010949-21idleruntime20:20:180
2392727218,31sleep023977-21df19:05:120
264672710,2sleep026468-21cut19:15:020
25128996522,13cyclictest32284-21/usr/sbin/munin19:35:300
25128996210,18cyclictest12420-21ntp_states20:25:210
25128996110,18cyclictest6976-21/usr/sbin/munin20:05:310
2512899609,16cyclictest11108-21mailstats22:25:260
2512899608,24cyclictest5287-21seq00:10:020
2512899608,15cyclictest8378-21if_eth020:10:150
45382590,2sleep04537-21threads00:05:270
314922593,8sleep00-21swapper19:34:350
2512899599,19cyclictest8644-21/usr/sbin/munin22:15:320
2512899597,19cyclictest23560-21/usr/sbin/munin23:15:280
25128995935,16cyclictest26969-21/usr/sbin/munin21:20:340
25128995918,15cyclictest10414-21latency_hist00:30:010
25128995912,15cyclictest2931-21/usr/sbin/munin00:00:200
25128995910,20cyclictest27505-21df23:30:130
25128995910,16cyclictest18583-21/usr/sbin/munin20:50:290
2512899589,17cyclictest26164-21/usr/sbin/munin23:25:270
2512899589,16cyclictest27829-21/usr/sbin/munin19:20:260
2512899588,18cyclictest14549-21/usr/sbin/munin22:40:140
2512899588,17cyclictest32608-21/usr/sbin/munin23:50:320
2512899588,17cyclictest29114-21/usr/sbin/munin19:25:210
2512899587,13cyclictest6652-21df_inode00:15:150
25128995832,14cyclictest26737-21/usr/sbin/munin19:15:210
25128995820,11cyclictest22649-21cut21:05:180
25128995811,19cyclictest8878-21sshd00:23:320
25128995810,15cyclictest28928-21/usr/sbin/munin21:30:210
2512899579,16cyclictest13522-21ntp_states22:35:240
2512899579,14cyclictest30212-21/usr/sbin/munin21:35:220
2512899578,17cyclictest6791-21/usr/sbin/munin22:10:300
2512899578,17cyclictest32339-21seq21:42:170
25128995734,14cyclictest1695-21/usr/sbin/munin23:55:210
25128995733,15cyclictest12167-21/usr/sbin/munin00:35:280
25128995715,13cyclictest18696-21ntpq22:55:250
25128995710,17cyclictest16989-21latency_hist22:50:010
2512899569,15cyclictest25037-21/usr/sbin/munin21:15:260
2512899568,14cyclictest30481-21/usr/sbin/munin23:40:250
2512899568,14cyclictest2913-21/usr/sbin/munin21:55:280
2512899567,15cyclictest5952-21ntpq20:00:220
25128995633,14cyclictest20148-21/usr/sbin/munin20:55:210
25128995631,16cyclictest21471-21/usr/sbin/munin21:00:250
25128995627,20cyclictest22348-21sh23:10:170
25128995610,17cyclictest2107-21ntpq19:45:260
2512899557,14cyclictest16171-21grep20:40:190
25128995510,15cyclictest12237-21ntp_states22:30:230
2512899547,16cyclictest31765-21/usr/sbin/munin23:45:260
13082543,8sleep00-21swapper19:41:580
2512899538,14cyclictest19766-21df_inode23:00:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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