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2024-05-08 - 22:47

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 highest latencies:
System rack4slot6s.osadl.org (updated Wed May 08, 2024 12:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2960022590,3sleep029603-21wc09:05:010
2494021470,4chrt24937-21processes08:45:270
794121450,2sleep07940-21timerandwakeup11:50:420
303921430,2sleep03040-21latency_hist07:20:000
1668821390,4chrt16686-21df10:20:110
669321330,3chrt6695-21netstat07:35:210
32300213019,85sleep032337-21users07:05:310
1048121300,3chrt10479-21irqstats07:50:160
2991221230,2sleep029911-21missed_timers09:05:240
484991199,18cyclictest27189-21/usr/sbin/munin08:55:130
484991188,18cyclictest436-21sendmail-mta08:16:370
4849911726,15cyclictest32559-21ntpq09:15:230
484991169,17cyclictest28298-21df11:05:130
484991168,22cyclictest30744-21cut11:15:010
484991168,17cyclictest1234-21awk11:25:250
4849911632,74cyclictest11725-21/usr/sbin/munin12:05:320
4849911625,14cyclictest11671-21/usr/sbin/munin07:55:130
484991159,15cyclictest11614-21irqstats10:00:210
484991158,17cyclictest32418-21ntp_states11:20:260
4849911511,16cyclictest19255-21ntp_kernel_err12:35:210
4849911510,16cyclictest4918-21chrt07:28:560
484991149,17cyclictest27148-21chrt11:00:210
484991149,15cyclictest18884-21munin-run12:35:010
484991148,17cyclictest6797-21seq11:46:090
484991148,16cyclictest25055-21runrttasks10:51:130
484991148,15cyclictest21867-21cat08:35:010
4849911433,71cyclictest20752-21/usr/sbin/munin10:35:240
4849911426,15cyclictest3789-21latency_hist07:25:010
4849911410,16cyclictest13154-21users12:10:330
4849911410,14cyclictest10279-21ntpq12:00:250
484991139,16cyclictest31417-21/usr/sbin/munin09:10:280
484991138,16cyclictest15151-21/usr/sbin/munin12:20:350
484991137,17cyclictest13169-21which10:05:290
4849911325,15cyclictest18659-21chrt10:26:340
4849911314,18cyclictest22954-21latency_hist10:45:020
4849911311,16cyclictest2285-21df11:30:120
484991129,14cyclictest9345-21grep09:50:330
484991129,14cyclictest46302sleep009:33:050
484991128,16cyclictest13894-21df_inode12:15:130
484991128,14cyclictest19503-21cat08:25:160
484991127,17cyclictest14130-21wc08:05:000
4849911210,16cyclictest2334-21wc09:25:010
484991119,18cyclictest9226-21chrt07:45:170
484991119,16cyclictest14139-21if_err_eth010:10:170
484991119,15cyclictest22251-21ntp_states08:35:280
484991118,14cyclictest14895-21seq08:06:050
4849911126,13cyclictest8657-21seq09:49:210
4849911125,15cyclictest10234-21/usr/sbin/munin09:55:140
484991109,17cyclictest8669-21/usr/sbin/munin11:55:300
484991108,14cyclictest6608-21ntpq09:40:250
484991108,13cyclictest19986-21chrt10:31:570
4849911023,13cyclictest5634-21seq11:42:090
4849911021,14cyclictest31954-21runrttasks11:19:560
4849911013,19cyclictest15617-21ntp_states10:15:270
4849911011,15cyclictest23258-21/usr/sbin/munin08:40:340
4849911011,15cyclictest23124-21df10:45:100
4849911010,16cyclictest5179-21/usr/sbin/munin07:30:350
484991099,14cyclictest17036-21users12:25:320
484991098,17cyclictest25897-21ntp_kernel_err10:55:210
4849910921,12cyclictest26001-21latency08:50:180
4849910910,17cyclictest2617-21memory09:25:190
4849910818,13cyclictest8111-21pluginstate07:40:290
4849910810,16cyclictest4253-21sshd11:36:340
484991079,19cyclictest18373-21ntpq08:20:240
484991076,16cyclictest853-21seq07:10:230
4849910721,15cyclictest15662-21/usr/sbin/munin08:10:170
4849910711,17cyclictest6166-21munin-run09:39:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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