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2026-07-08 - 17:19

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 Wed Jul 08, 2026 12:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1270624970,2sleep012707-21ntpq07:05:210
2561821250,4chrt25615-21ntp_states07:55:220
1241921210,3sleep012421-21ls09:10:130
67821200,2sleep0679-21df08:25:100
439421200,2sleep04395-21lockfile-remove08:40:000
2675721160,3chrt26758-21ntp_states10:05:210
3100721030,3sleep031080-21/usr/sbin/munin08:15:280
609321000,4sleep06110-21/usr/sbin/munin08:45:250
3190821000,3sleep031446-21/usr/sbin/munin12:30:270
288821008,16sleep02915-21munin-run10:40:010
139212960,4sleep013977-21ntpq07:10:190
188672930,3sleep018923-21processes11:40:260
86572895,9sleep08655-21ntp_states08:55:250
166392850,4sleep016711-21uname07:20:240
294882830,2sleep029486-21ntp_offset08:10:210
112192820,2sleep011218-21awk09:05:200
217972800,3sleep021865-21processes07:40:250
13614996312,20cyclictest550-21ntp_states12:35:210
13614996110,16cyclictest14858-21/usr/sbin/munin09:20:190
1361499599,17cyclictest4508-21/usr/sbin/munin08:40:190
1361499599,17cyclictest288-21snmpd12:00:160
13614995936,15cyclictest4411-21/usr/sbin/munin10:45:130
13614995934,16cyclictest31955-21/usr/sbin/munin10:25:250
13614995934,16cyclictest25467-21runrttasks10:00:220
13614995924,15cyclictest15551-21runrttasks07:15:290
13614995919,11cyclictest18292-21sshd07:26:120
13614995911,15cyclictest16837-21sshd09:26:140
138992580,4sleep013896-21ps09:15:270
1361499589,18cyclictest9695-21memory11:05:190
1361499589,18cyclictest8208-21/usr/sbin/munin11:00:110
1361499589,16cyclictest2206-21ntp_states08:30:210
1361499588,17cyclictest7077-21/usr/sbin/munin08:50:190
13614995834,16cyclictest21981-21runrttasks11:52:390
13614995834,15cyclictest616-21/usr/sbin/munin10:30:150
13614995818,14cyclictest288-21snmpd11:25:110
13614995810,14cyclictest24155-21ntp_states09:55:210
1361499578,18cyclictest5616-21/usr/sbin/munin10:50:260
1361499578,17cyclictest17427-21/usr/sbin/munin09:30:290
1361499578,16cyclictest22763-21/usr/sbin/munin07:45:130
13614995733,15cyclictest26673-21/usr/sbin/munin12:10:240
13614995732,17cyclictest6999-21/usr/sbin/munin10:55:160
13614995732,16cyclictest17538-21/usr/sbin/munin11:35:220
13614995732,15cyclictest27756-21/usr/sbin/munin12:15:180
13614995730,17cyclictest20159-21/usr/sbin/munin11:45:240
13614995730,16cyclictest16082-21/usr/sbin/munin11:30:150
13614995711,13cyclictest13435-21df11:20:120
1361499569,15cyclictest31812-21/usr/sbin/munin08:20:280
1361499568,15cyclictest29031-21cpu10:15:100
1361499567,17cyclictest30308-21irqstats12:25:160
1361499567,17cyclictest24998-21/usr/sbin/munin12:05:190
1361499567,17cyclictest12068-21/usr/sbin/munin11:15:130
13614995632,16cyclictest28341-21/usr/sbin/munin10:10:290
13614995632,15cyclictest23103-21/usr/sbin/munin09:50:270
13614995629,18cyclictest0-21swapper11:55:360
13614995621,14cyclictest276-21runrttasks12:24:070
1361499559,16cyclictest9730-21df_inode09:00:130
1361499559,15cyclictest30352-21/usr/sbin/munin10:20:130
1361499559,15cyclictest27926-21/usr/sbin/munin08:05:140
1361499558,15cyclictest26695-21df_inode08:00:130
1361499558,15cyclictest19857-21modprobe09:39:590
1361499557,17cyclictest24042-21/usr/sbin/munin07:50:140
1361499557,15cyclictest20165-21/usr/sbin/munin07:35:200
13614995533,14cyclictest11918-21runrttasks11:14:530
13614995533,13cyclictest20132-21/usr/sbin/munin09:40:160
13614995530,16cyclictest3865-21runrttasks10:42:120
13614995310,15cyclictest276-21runrttasks07:30:280
1361499527,15cyclictest21339-21cpu09:45:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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