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2025-04-03 - 15:36

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #7

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 here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Note that this system runs a non-RT kernel.
Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackbslot7s.osadl.org (updated Thu Apr 03, 2025 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
265812520818,5178sleep320489-21kworker/3:110:17:233
265812520818,5178sleep320489-21kworker/3:110:17:233
258662343313,3407sleep320489-21kworker/3:108:18:233
27429261117,577sleep227449-21users08:20:532
20439260615,473sleep020456-21idleruntime-cro11:59:520
20439260615,473sleep020456-21idleruntime-cro11:59:520
127625507,531sleep01312-21ntpq08:45:180
16785238511,332sleep016848-21mailstats07:45:250
21060238454,263sleep021140-21fschecks_time08:00:190
3154423770,53sleep017443-1kworker/0:2H08:39:520
1054923747,348sleep00-21swapper/011:19:540
15767235413,327sleep115768-21sshd11:36:231
10922232310,290sleep011073-21latency_hist09:19:550
12420232013,217sleep012434-21fschecks_count11:25:110
2658229139,196sleep02798-21unixbench_singl07:00:250
30272229044,231sleep030386-21timerwakeupswit08:30:240
28147227922,195sleep028209-21fschecks_time08:25:150
5295227211,212sleep00-21swapper/008:59:520
14514226912,72sleep014652-21latency_hist07:39:550
16913224419,210sleep016984-21switchtime11:40:300
16913224419,210sleep016984-21switchtime11:40:300
5317223545,171sleep05411-21fschecks_time11:00:080
14557223517,170sleep014600-21ntp_kernel_pll_11:30:280
8996222320,185sleep19029-21/usr/sbin/munin11:10:351
24329221841,92sleep023829-21/usr/sbin/munin12:10:230
30927221672,16sleep00-21swapper/010:30:240
19832221527,151sleep019872-21latency09:50:150
26633220653,130sleep026647-21fschecks_count08:20:390
17721220523,163sleep117776-21grep11:45:071
17721220523,163sleep117776-21grep11:45:071
402021995,31sleep00-21swapper/010:51:080
601219849,89sleep00-21swapper/010:40:260
2072219751,125sleep00-21swapper/010:45:220
2072219751,125sleep00-21swapper/010:45:220
6219219333,117sleep06298-21timerandwakeup09:00:330
1837121919,166sleep018420-21awk09:45:190
1837121919,166sleep018420-21awk09:45:190
32076218113,151sleep32-21kthreadd10:39:523
7966218030,110sleep08037-21sort09:05:420
26026217743,58sleep01711-21cyclictest08:19:540
413217410,16sleep00-21swapper/006:55:130
2202421728,122sleep00-21swapper/012:04:530
22355216624,106sleep022432-21grep10:00:210
28875216444,48sleep028922-21munin-run12:29:530
1216721627,141sleep012244-21readlink07:30:220
1052321626,116sleep00-21swapper/007:25:210
818215414,124sleep2857-21processes06:55:312
7264215411,57sleep07326-21uname11:05:330
26187215437,78sleep026271-21latency_hist10:14:540
9795215336,74sleep00-21swapper/007:24:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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