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2024-07-27 - 04:11

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 Sat Jul 27, 2024 00:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2540922240,2sleep025411-21sed20:55:020
2901121320,2sleep029012-21sort23:15:020
495121290,3sleep04952-21uptime23:45:280
2700121220,3sleep027004-21grep23:05:260
740521050,4sleep07455-21df19:45:100
3087421030,5sleep030893-21ntp_states21:15:220
1639321010,2sleep016394-21cat22:25:200
98552990,4sleep09915-21grep19:55:020
50052910,2sleep05004-21load19:35:160
139112900,4sleep013927-21fw_packets20:10:140
253802880,3sleep025419-21/usr/sbin/munin23:00:190
202772850,3sleep020304-21cat22:40:200
302322820,4sleep030274-21basename23:20:000
115802806,61sleep011629-21ps20:00:240
2979727621,30sleep029823-21ntp_states19:05:190
30748996611,17cyclictest6146-21ntpq21:45:180
30748996136,16cyclictest29918-21/usr/sbin/munin21:10:280
30748996111,18cyclictest2857-21sshd19:25:310
222522613,5sleep00-21swapper22:47:520
3074899599,17cyclictest16959-21cat20:20:280
30748995918,11cyclictest0-21swapper23:35:100
3074899589,16cyclictest21648-21/usr/sbin/munin20:40:120
3074899588,16cyclictest748-21/usr/sbin/munin21:25:380
3074899588,15cyclictest32085-21/usr/sbin/munin23:25:240
3074899587,15cyclictest13448-21seq20:07:480
30748995831,16cyclictest6697-21/usr/sbin/munin19:40:300
30748995826,23cyclictest4732-21if_eth021:40:150
30748995820,13cyclictest19300-21sshd22:35:320
30748995814,16cyclictest4699-21munin-run19:35:010
30748995812,19cyclictest25737-21ntpq20:55:240
30748995811,18cyclictest13453-21/usr/sbin/munin00:20:110
30748995810,16cyclictest11309-21/usr/sbin/munin22:05:220
3074899578,17cyclictest3304-21/usr/sbin/munin21:35:180
3074899578,16cyclictest30923-21fw_packets19:10:140
3074899577,18cyclictest32117-21/usr/sbin/munin19:15:250
30748995733,15cyclictest8235-21munin-node00:00:100
30748995725,22cyclictest11900-21runrttasks00:14:340
30748995710,18cyclictest31919-21/usr/sbin/munin21:20:280
30748995710,17cyclictest28093-21df_inode21:05:140
3074899569,18cyclictest7183-21ntp_kernel_err23:55:220
3074899569,15cyclictest26747-21/usr/sbin/munin21:00:330
3074899568,19cyclictest11141-21awk20:00:000
3074899568,16cyclictest6255-21awk23:50:280
3074899568,16cyclictest19070-21df_inode20:30:140
3074899568,16cyclictest15985-21sshd20:17:310
3074899568,15cyclictest22874-21/usr/sbin/munin20:45:170
3074899568,15cyclictest22688-21/usr/sbin/munin22:50:090
3074899568,15cyclictest14926-21/usr/sbin/munin22:20:190
3074899568,14cyclictest9522-21/usr/sbin/munin00:05:140
30748995632,15cyclictest24961-21runrttasks22:59:060
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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