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2024-07-21 - 22:35

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 Sun Jul 21, 2024 12:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1202122450,3sleep012024-21timerandwakeup10:15:270
1936622440,2sleep019367-21cat10:45:160
132821420,3chrt1326-21irqstats09:35:160
2231021300,4chrt22311-21/usr/sbin/munin08:50:210
3165321230,3sleep031657-21timerwakeupswit09:25:280
3019021230,2sleep030191-21sshd11:25:410
28580991228,19cyclictest1928-21/usr/sbin/munin07:30:290
28580991208,13cyclictest23375-21df_inode08:55:130
285809911910,16cyclictest7406-21/usr/sbin/munin12:05:330
285809911812,16cyclictest15888-21ntp_states08:25:210
28580991179,19cyclictest14609-21seq10:25:290
28580991179,16cyclictest21988-21memory10:55:170
28580991177,17cyclictest72852sleep007:51:450
285809911710,93cyclictest19773-21ntp_states08:40:250
28580991169,17cyclictest13748-21cut12:30:010
28580991159,16cyclictest10074-21if_eth012:15:130
28580991158,16cyclictest23633-21/usr/sbin/munin11:00:330
28580991158,14cyclictest28877-21/usr/sbin/munin09:15:250
28580991158,14cyclictest2309-21df_inode11:45:130
28580991157,15cyclictest7801-21/usr/sbin/munin07:55:120
28580991149,14cyclictest20755-21/usr/sbin/munin08:45:250
28580991149,13cyclictest30265-21ntpq07:15:290
28580991148,16cyclictest13292-21ntp_states08:15:210
28580991148,14cyclictest17679-21seq08:32:000
28580991148,13cyclictest29441-21munin-run11:25:010
28580991147,17cyclictest27106-21/usr/sbin/munin11:15:170
28580991147,17cyclictest14467-21chrt12:30:370
28580991147,15cyclictest4063-21ntp_states09:45:210
285809911410,14cyclictest17825-21munin-run10:40:010
28580991139,16cyclictest12036-21/usr/sbin/munin08:10:250
28580991139,15cyclictest28358-21latency_hist09:15:010
28580991139,14cyclictest9175-21df_inode08:00:130
28580991139,14cyclictest29031-21/usr/sbin/munin07:10:240
28580991138,16cyclictest25271-21runrttasks09:00:490
28580991137,17cyclictest19357-21sendmail08:40:010
28580991137,16cyclictest10143-21ls10:10:010
28580991137,14cyclictest380-21ntp_states07:25:210
28580991136,16cyclictest5406-21grep09:50:250
28580991135,16cyclictest12864-21runrttasks10:20:130
28580991129,15cyclictest32626-21seq11:35:330
28580991129,13cyclictest15408-21ntp_states12:35:210
28580991128,14cyclictest3459-21seq09:43:280
28580991128,14cyclictest31432-21users11:30:290
28580991128,14cyclictest11368-21latency_hist10:15:010
28580991127,15cyclictest15555-21memory10:30:170
28580991127,15cyclictest10460-21df_inode08:05:130
28580991127,13cyclictest1031-21df_inode11:40:130
28580991126,16cyclictest9105-21readlink12:10:250
285809911226,75cyclictest11876-21/usr/sbin/munin12:20:290
28580991119,16cyclictest26032-21chrt11:10:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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