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2026-05-29 - 21:04

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 792 highest latencies:
System rack4slot6s.osadl.org (updated Fri May 29, 2026 12:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
637622590,3sleep06375-21awk11:15:230
2423221570,3sleep024233-21latency_hist10:20:020
2241521230,4chrt22411-21sshd10:14:140
1246021190,6chrt12461-21/usr/sbin/munin11:40:100
1503921140,2sleep015040-21date09:50:010
3109621040,2sleep031097-21ntp_states08:45:190
198662970,4sleep019926-21switchtime07:50:220
214052930,2sleep021406-21latency_hist08:00:020
85752900,3sleep08625-21latency_hist09:25:020
11296999067,14cyclictest12544-21runrttasks07:14:580
11296998962,16cyclictest14143-21seq07:21:220
11296998962,15cyclictest15324-21memory09:50:180
11296998961,15cyclictest1518-21awk08:55:300
11296998864,14cyclictest1452-21seq10:55:460
11296998853,22cyclictest25396-21runrttasks08:15:450
11296998762,15cyclictest7895-21chrt11:20:300
11296998760,16cyclictest8751-21df_inode09:25:140
11296998757,19cyclictest16605-21load09:55:180
11296998661,14cyclictest29345-21latency_hist10:40:010
11296998660,15cyclictest11211-21cat09:35:020
11296998560,14cyclictest19901-21runrttasks12:08:410
11296998558,16cyclictest21562-21seq12:15:140
11296998548,23cyclictest24265-21/usr/sbin/munin10:20:300
11296998459,15cyclictest4071-21chrt11:05:540
11296998459,14cyclictest32531-21awk08:50:260
11296998458,15cyclictest2772-21chrt11:00:500
11296998458,15cyclictest14040-21chrt11:45:220
11296998457,16cyclictest18555-21runrttasks12:03:100
11296998453,22cyclictest9838-21cat11:30:020
11296998361,13cyclictest20486-21ntp_states12:10:220
11296998359,14cyclictest28528-21chrt08:34:020
11296998359,14cyclictest10815-21seq11:33:220
11296998358,16cyclictest22573-21runrttasks08:04:340
11296998358,16cyclictest16633-21latency_hist07:35:010
11296998357,14cyclictest22890-21/usr/sbin/munin12:20:140
11296998260,12cyclictest17842-21/usr/sbin/munin07:40:250
11296998259,13cyclictest5855-21seq09:14:130
11296998258,15cyclictest12631-21df_inode09:40:140
11296998257,14cyclictest24689-21cat08:15:020
11296998256,14cyclictest17945-21sort10:00:180
11296998255,16cyclictest27994-21date08:30:010
11296998159,14cyclictest11735-21/usr/sbin/munin09:35:260
11296998158,13cyclictest3445-21sort09:05:020
11296998157,14cyclictest11610-21basename11:35:260
11296998155,18cyclictest13281-21cron07:20:000
11296998151,20cyclictest16451-21/usr/sbin/munin11:55:150
11296998148,21cyclictest27736-21systemd12:38:070
11296998057,13cyclictest15218-21memory11:50:180
11296998056,15cyclictest30278-21runrttasks10:42:330
11296998056,14cyclictest24477-21ntp_states12:25:220
11296998056,13cyclictest22966-21sed08:05:180
11296998050,17cyclictest30993-21ntp_states10:45:220
11296998049,19cyclictest32042-21df10:50:110
11296998049,18cyclictest29747-21chrt08:38:290
11296997956,13cyclictest26697-21latency_hist08:25:020
11296997955,13cyclictest27357-21timerandwakeup10:30:260
11296997954,14cyclictest26687-21latency_hist12:35:020
11296997953,14cyclictest30200-21runrttasks08:41:060
11296997856,14cyclictest25848-21runrttasks10:25:250
11296997856,13cyclictest19353-21seq07:50:020
11296997855,13cyclictest16909-21runrttasks07:36:510
11296997854,13cyclictest3586-21forks09:05:140
11296997853,14cyclictest20264-21wc10:10:020
11296997655,14cyclictest6786-21sshd09:16:160
11296997652,15cyclictest4742-21cpu11:10:100
1124927418,31sleep011273-21munin-run07:10:010
11296997042,16cyclictest276-21runrttasks07:28:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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