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2024-09-12 - 10:57

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 100 highest latencies:
System rack4slot6s.osadl.org (updated Thu Sep 12, 2024 00:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1394422720,3sleep013943-21/usr/sbin/munin23:25:180
3173221450,3chrt31733-21latency_hist00:35:020
1833221370,3chrt18330-21users21:35:300
2029421320,3chrt20295-21latency_hist21:45:020
1450121320,2sleep014505-21wc19:15:270
1958721300,4chrt19586-21sshd23:46:060
2072921260,3chrt20730-21ntpq19:40:210
1142521150,3sleep011426-21ntp_states23:15:230
1161821100,4sleep011666-21/usr/sbin/munin19:05:190
125042980,4sleep012510-21df_inode23:20:130
321072930,3sleep032109-21egrep20:25:120
111022880,2sleep011103-21date23:15:020
76882820,3sleep07760-21processes20:55:230
241952810,2sleep024197-21sh19:55:010
60362690,3sleep06035-21/usr/sbin/munin22:55:140
241522670,3sleep024153-21latency_hist22:00:030
164572670,3sleep016458-21modprobe19:25:000
1259899638,23cyclictest25266-21snmpd21:25:260
12598996325,14cyclictest13737-21idleruntime-cro21:20:000
12598996137,14cyclictest31087-21/usr/sbin/munin20:20:200
1259899609,18cyclictest28075-21/usr/sbin/munin22:15:240
12598996024,15cyclictest27906-21latency_hist00:20:020
12598996010,17cyclictest13139-21awk19:10:240
1259899598,18cyclictest787-21/usr/sbin/munin22:35:240
12598995929,22cyclictest20376-21/usr/sbin/munin23:50:160
12598995911,15cyclictest21701-21fw_packets21:50:140
1259899589,15cyclictest13883-21/usr/sbin/munin21:20:200
1259899589,14cyclictest25794-21ntp_states22:05:230
1259899588,18cyclictest269-21runrttasks22:10:050
1259899588,17cyclictest25638-21/usr/sbin/munin20:00:250
1259899588,16cyclictest31818-21/usr/sbin/munin00:35:280
1259899588,15cyclictest11270-21/usr/sbin/munin21:10:170
1259899587,18cyclictest29796-21grep22:20:240
1259899587,15cyclictest8558-21/usr/sbin/munin23:05:300
12598995836,14cyclictest5135-21/usr/sbin/munin20:45:240
12598995816,12cyclictest2429-21runrttasks22:40:230
12598995810,18cyclictest3767-21netstat20:40:190
12598995810,17cyclictest17703-21/usr/sbin/munin23:40:150
12598995810,15cyclictest2477-21ntp_kernel_pll_20:35:210
1259899579,17cyclictest925-21/usr/sbin/munin20:30:140
1259899579,17cyclictest4672-21/usr/sbin/munin22:50:310
1259899579,16cyclictest25266-21snmpd21:00:200
1259899579,16cyclictest24614-21ntp_states19:55:220
1259899579,16cyclictest20617-21ntp_states21:45:210
1259899579,16cyclictest19158-21/usr/sbin/munin19:35:170
1259899578,21cyclictest25663-21seq00:10:230
1259899578,16cyclictest15024-21/usr/sbin/munin23:30:290
1259899578,15cyclictest21753-21/usr/sbin/munin19:45:270
1259899577,16cyclictest7263-21/usr/sbin/munin23:00:130
12598995734,14cyclictest16450-21/usr/sbin/munin23:35:160
12598995733,15cyclictest22845-21/usr/sbin/munin00:00:110
12598995731,17cyclictest3573-21/usr/sbin/munin22:45:180
12598995710,18cyclictest25138-21sshd22:03:050
12598995710,13cyclictest31966-21/usr/sbin/munin22:30:150
1259899568,16cyclictest6233-21seq20:50:170
1259899568,16cyclictest29495-21/usr/sbin/munin20:15:170
12598995616,11cyclictest16451-21/usr/sbin/munin21:30:130
12598995610,15cyclictest9980-21/usr/sbin/munin21:05:100
1259899557,17cyclictest28262-21seq20:10:110
1259899557,15cyclictest17929-21df19:30:110
12598995532,14cyclictest27032-21/usr/sbin/munin20:05:130
12598995532,14cyclictest21739-21/usr/sbin/munin23:55:200
12598995531,16cyclictest24069-21runrttasks00:05:080
12598995411,16cyclictest16643-21df19:25:140
12598995410,15cyclictest28157-21/usr/sbin/munin00:20:180
1259899537,15cyclictest29309-21df_inode00:25:120
1259899536,15cyclictest30955-21ntpq22:25:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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