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2025-02-11 - 02:01

OSADL QA Farm on Real-time of Mainline Linux

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

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: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackfslot4s.osadl.org (updated Mon Feb 10, 2025 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2752521320,2sleep027526-21latency10:36:100
3038821280,2chrt30391-21sed10:42:260
2212221180,3chrt21556-21apt-get10:25:540
1369321110,2chrt13670-21apt-get11:15:150
3034221090,4chrt30339-21cat07:30:010
249321090,2chrt2494-21sh07:38:180
985821070,2chrt9859-21sleep07:52:190
648821030,2chrt6489-21munin-run11:00:000
1935621000,2chrt19357-21sh11:26:080
131362920,2sleep013137-21run-parts09:03:190
25552910,2sleep02553-21open_files10:52:090
54992840,2sleep05500-21ls07:45:030
147772790,2sleep014778-21latency09:05:460
20206907814,56cyclictest13088-21sendmail-msp08:00:590
20206907810,57cyclictest20690-21ntpq10:23:210
20206907612,55cyclictest7225-21sh11:01:340
20206907612,55cyclictest4391-21ssh09:51:000
20206907611,56cyclictest25602-21aten2.4_rfpower07:20:470
20206907611,56cyclictest10691-21ssh10:02:540
168732760,1sleep016874-21grep11:21:090
2020690755,13cyclictest1443-21df08:41:000
2020690755,11cyclictest877-21lldpd11:49:200
2020690754,60cyclictest9138-21sendmail-msp10:00:040
20206907515,10cyclictest7291-21ntpq08:51:230
20206907512,10cyclictest21955-21sendmail-msp09:22:260
20206907511,56cyclictest23232-21sendmail-msp08:22:070
20206907511,55cyclictest3510-21sendmail-msp12:02:410
20206907511,55cyclictest26156-21sendmail-msp11:40:510
2020690744,18cyclictest15210-21python310:12:250
20206907410,56cyclictest31779-21sendmail-msp09:42:260
310122730,1sleep031015-21aten2.4_rfpower08:35:220
2020690737,11cyclictest29503-21ntpq08:31:060
2020690736,9cyclictest10669-21apt-get12:15:190
2020690736,11cyclictest3484-21munin-run12:00:060
2020690734,57cyclictest25865-21/usr/sbin/munin08:25:480
2020690734,18cyclictest28530-21ssh09:33:400
20206907317,10cyclictest31205-21ssh11:51:000
113422730,2sleep011344-21grep11:10:460
2020690725,57cyclictest16368-21ssh10:15:260
2020690725,56cyclictest20328-21apt-get07:10:170
2020690725,17cyclictest13336-21sendmail-msp12:22:430
2020690725,12cyclictest3550-21ssh09:50:000
2020690724,59cyclictest24639-21/usr/sbin/munin10:31:430
20206907217,46cyclictest18114-21/usr/sbin/munin12:30:440
20206907214,48cyclictest11208-21if_err_eth007:55:410
20206907210,53cyclictest26156-21sendmail-msp11:40:090
2020690715,19cyclictest17102-21python308:06:260
2020690715,18cyclictest31694-21ntpq07:31:220
2020690715,16cyclictest4546-21ntpq08:45:560
20206907115,8cyclictest18561-21df08:10:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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