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2025-11-15 - 07:44

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 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.

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 Nov 15, 2025 00:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12704213418,29sleep012753-21df19:05:130
2395921260,3chrt23962-21tr00:00:010
2052921220,4chrt20530-21cat21:40:170
2723521030,3sleep027240-21open_files20:00:260
19562980,4sleep01975-21modprobe22:35:010
291752960,2sleep029176-21date00:20:000
202822960,3sleep020319-21/usr/sbin/munin23:45:160
139962950,3sleep014000-21egrep19:10:110
240872935,11sleep024136-21awk00:00:100
114002920,3sleep011428-21irqstats21:05:200
229812856,65sleep022985-21df_inode21:50:130
171932795,9sleep022189-21snmpd23:32:390
97242724,57sleep09741-21munin-run23:05:010
296042706,52sleep029654-21irqstats20:10:160
75842640,3sleep07645-21tr20:50:210
8302630,3sleep0894-21latency_hist20:25:020
253442633,5sleep00-21swapper21:59:560
272942600,4sleep027297-21grep22:05:280
1390299609,18cyclictest4704-21sendmail-msp20:40:010
1390299608,17cyclictest25384-21/usr/sbin/munin00:05:230
102412600,3sleep010245-21tr21:00:220
1390299599,17cyclictest28286-21df20:05:150
1390299599,17cyclictest21552-21df_inode23:50:130
1390299599,17cyclictest19092-21df21:35:140
1390299599,16cyclictest26668-21cpu00:10:120
1390299598,19cyclictest9851-21munin-run21:00:000
1390299597,18cyclictest24342-21/usr/sbin/munin19:50:130
13902995921,14cyclictest108-21systemd-journal22:42:440
13902995910,17cyclictest7256-21/usr/sbin/munin22:55:210
13902995910,16cyclictest4910-21/usr/sbin/munin22:45:200
1390299589,18cyclictest9865-21/usr/sbin/munin23:05:280
1390299589,18cyclictest31886-21/usr/sbin/munin00:30:190
1390299588,18cyclictest30603-21/usr/sbin/munin00:25:140
1390299588,17cyclictest279-21sshd23:24:450
1390299588,15cyclictest13863-21/usr/sbin/munin21:15:270
13902995834,15cyclictest32393-21/usr/sbin/munin22:25:270
13902995833,17cyclictest20954-21/usr/sbin/munin19:35:280
13902995833,16cyclictest15452-21/usr/sbin/munin23:25:270
13902995832,16cyclictest12721-21ntp_states23:15:230
13902995810,18cyclictest22189-21snmpd23:35:440
13902995810,15cyclictest15189-21/usr/sbin/munin21:20:330
1390299579,17cyclictest18107-21wc19:25:200
1390299579,16cyclictest709-21/usr/sbin/munin00:35:290
1390299579,15cyclictest29382-21/usr/sbin/munin22:15:170
1390299578,17cyclictest6031-21df_inode22:50:130
1390299578,17cyclictest324-21munin-node21:30:140
13902995732,16cyclictest12319-21latency_hist23:15:010
13902995721,12cyclictest1370-21mailstats20:25:270
13902995718,12cyclictest2503-21sendmail_mailst22:35:270
13902995710,14cyclictest15280-21/usr/sbin/munin19:15:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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