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2024-09-01 - 01:00

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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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 50 highest latencies:
System rack4slot6s.osadl.org (updated Sat Aug 31, 2024 12:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
767922520,2sleep07681-21switchtime09:20:270
819422200,3sleep08198-21cron11:30:010
2155921370,4chrt21557-21df08:10:120
2826921150,2sleep028271-21awk10:40:250
1089621110,3sleep010926-21sort09:35:010
637921020,3sleep06451-21/usr/sbin/munin09:15:300
313721000,3sleep03159-21cpu11:10:110
58692920,4sleep05880-21latency_hist07:10:020
192412920,3sleep019312-21/usr/sbin/munin10:05:250
180562925,10sleep018127-21/usr/sbin/munin07:55:270
307002916,11sleep030711-21ntp_states10:50:210
208142916,10sleep020821-21vmstat08:05:300
277422885,11sleep027713-21latency_hist10:40:030
19362880,4sleep01990-21/usr/sbin/munin11:05:140
98912866,66sleep09890-21ntp_states11:35:220
61762810,3sleep06242-21awk11:20:320
123132775,60sleep012329-21munin-run07:35:010
148752740,3sleep014876-21cat11:55:150
104002690,3sleep010401-21threads07:25:260
46792650,2sleep04680-21/usr/sbin/munin09:10:140
50172640,2sleep05018-21/usr/sbin/munin11:15:270
265632630,2sleep026608-21wc08:30:020
5894996135,17cyclictest712-21/usr/sbin/munin08:55:110
5894996037,14cyclictest21551-21/usr/sbin/munin10:15:170
5894996036,15cyclictest12594-21/usr/sbin/munin09:40:200
5894996032,17cyclictest0-21swapper08:46:460
5894996010,18cyclictest31712-21/usr/sbin/munin10:55:190
589499599,16cyclictest26680-21/usr/sbin/munin08:30:260
589499599,15cyclictest12197-21/usr/sbin/munin11:45:180
5894995935,15cyclictest19341-21/usr/sbin/munin08:00:260
5894995934,15cyclictest29464-21/usr/sbin/munin08:40:190
589499589,18cyclictest108-21systemd-journal08:35:410
589499589,16cyclictest8373-21df11:30:110
589499589,15cyclictest17373-21/usr/sbin/munin12:05:140
589499587,18cyclictest14912-21/usr/sbin/munin09:50:270
589499587,17cyclictest19946-21/usr/sbin/munin12:15:210
5894995835,14cyclictest17778-21/usr/sbin/munin10:00:200
5894995834,14cyclictest3380-21/usr/sbin/munin09:05:160
5894995827,18cyclictest6038-21df07:10:110
5894995814,15cyclictest16983-21runrttasks07:50:480
5894995811,14cyclictest23974-21/usr/sbin/munin10:25:260
5894995810,17cyclictest22691-21/usr/sbin/munin10:20:160
5894995810,16cyclictest21558-21ntp_states12:20:250
589499579,15cyclictest13049-21/usr/sbin/munin07:35:290
589499578,17cyclictest23178-21/usr/sbin/munin08:15:250
589499578,17cyclictest11512-21users11:40:290
589499578,16cyclictest32133-21ntp_states08:50:220
589499578,15cyclictest15383-21sshd07:45:280
589499577,17cyclictest25117-21/usr/sbin/munin12:35:150
5894995710,15cyclictest8466-21/usr/sbin/munin09:25:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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