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2024-04-16 - 13:32

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 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 50 highest latencies:
System rack4slot6s.osadl.org (updated Tue Apr 16, 2024 00:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1466021380,3sleep014659-21forks19:55:090
1775521330,3chrt17753-21sshd22:11:390
716721250,3chrt7170-21switchtime21:30:280
2034221020,4sleep020353-21users20:15:300
158742990,3sleep015892-21latency22:05:220
146502880,4sleep014704-21sendmail_mailst00:05:300
131732880,3sleep013207-21latency_hist19:50:010
211912820,3sleep021231-21proc_pri22:25:240
187782820,3sleep018782-21ntpq20:10:260
86212787,60sleep08660-21timerandwakeup19:30:220
283527621,32sleep02860-21munin-run19:10:000
293072720,2sleep029355-21wc20:50:300
2886996419,17cyclictest208862chrt00:30:170
288699628,18cyclictest324-21munin-node21:00:110
288699618,27cyclictest18237-21df_inode00:20:140
2886996111,18cyclictest23797-21ntp_states22:35:250
2886996110,19cyclictest13320-21seq21:55:220
288699607,17cyclictest12164-21/usr/sbin/munin21:50:260
2886996023,13cyclictest3305-21lldpd21:05:340
2886996010,16cyclictest24923-21/usr/sbin/munin20:35:150
288699599,16cyclictest29964-21/usr/sbin/munin23:00:180
288699599,15cyclictest23194-21munin-run00:40:010
2886995936,16cyclictest9310-21/usr/sbin/munin23:45:170
2886995911,15cyclictest18344-21df22:15:140
288699589,15cyclictest27375-21/usr/sbin/munin22:50:150
288699588,17cyclictest31589-21/usr/sbin/munin23:05:260
288699588,16cyclictest2797-21grep21:15:110
2886995835,15cyclictest9752-21/usr/sbin/munin21:40:300
2886995833,15cyclictest8159-21/usr/sbin/munin21:35:200
2886995833,15cyclictest20148-21/usr/sbin/munin22:20:300
2886995831,17cyclictest26175-21/usr/sbin/munin22:45:160
2886995810,17cyclictest11022-21ntp_states19:40:180
288699579,20cyclictest10624-21sendmail-msp19:40:010
288699578,16cyclictest19454-21/usr/sbin/munin00:25:170
288699577,16cyclictest15889-21/usr/sbin/munin20:00:140
2886995733,15cyclictest25863-21runrttasks22:44:120
2886995733,14cyclictest1690-21/usr/sbin/munin23:15:250
2886995710,19cyclictest22510-21ntpq22:30:250
2886995710,16cyclictest5576-21/usr/sbin/munin19:20:190
2886995710,14cyclictest31252-21munin-run21:00:010
288699569,19cyclictest269-21runrttasks23:20:210
288699569,14cyclictest16856-21/usr/sbin/munin00:15:170
288699569,13cyclictest5459-21df_inode21:25:120
288699568,17cyclictest5255-21/usr/sbin/munin23:30:200
288699568,15cyclictest29435-21chrt22:56:550
288699568,14cyclictest6859-21/usr/sbin/munin19:25:250
288699568,12cyclictest16143-21timerwakeupswit00:10:300
288699567,16cyclictest14435-21/usr/sbin/munin22:00:280
288699566,14cyclictest4414-21ntp_states21:20:230
2886995634,13cyclictest26339-21/usr/sbin/munin20:40:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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