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2025-11-29 - 14:32

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 highest latencies:
System rack4slot6s.osadl.org (updated Sat Nov 29, 2025 12:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
286522600,2sleep02867-21latency_hist07:55:010
22741214719,34sleep022743-21ntpq07:05:220
1183221450,2sleep011833-21cut10:35:020
1594421350,3chrt15889-21/usr/sbin/munin08:45:140
468521280,2sleep04686-21readlink08:00:270
570821120,3sleep05706-21ntp_states10:10:230
3150421120,3sleep031420-21/usr/sbin/munin09:45:160
2126521100,3sleep021322-21ntp_kernel_err09:05:220
2010921080,4sleep020177-21/usr/sbin/munin09:00:270
42902886,10sleep04297-21awk12:10:250
31972880,4sleep03268-21grep12:05:300
287102880,3sleep028756-21sort09:35:020
223032874,9sleep022347-21if_eth011:15:170
186552810,3sleep018660-21/usr/sbin/munin11:00:250
239962610,2sleep023997-21systemctl11:20:280
23650996124,14cyclictest16587-21sshd10:52:210
23650996016,15cyclictest30594-21proc_pri07:35:300
23650996011,18cyclictest26218-21munin-run07:20:010
2365099598,16cyclictest8965-21chrt12:29:280
23650995910,17cyclictest22421-21/usr/sbin/munin09:10:130
23650995910,16cyclictest1534-21/usr/sbin/munin09:55:180
2365099588,18cyclictest31338-21df_inode11:50:140
23650995818,12cyclictest13312-21cpu08:35:120
23650995811,16cyclictest14560-21/usr/sbin/munin10:45:160
23650995810,20cyclictest12608-21sshd08:30:310
23650995810,18cyclictest24886-21df11:25:160
23650995810,17cyclictest23940-21memory07:10:180
23650995810,17cyclictest20244-21/usr/sbin/munin11:05:310
2365099578,17cyclictest6600-21/usr/sbin/munin12:20:270
2365099578,17cyclictest21338-21grep11:10:270
2365099578,16cyclictest6706-21/usr/sbin/munin10:15:170
2365099578,16cyclictest1418-21/usr/sbin/munin12:00:310
2365099577,18cyclictest9310-21/usr/sbin/munin10:25:290
2365099577,17cyclictest546-21cat07:45:180
2365099577,17cyclictest4346-21/usr/sbin/munin10:05:220
23650995733,15cyclictest5647-21/usr/sbin/munin08:05:160
23650995718,11cyclictest28862-21sshd11:40:210
23650995712,16cyclictest3439-21users10:00:300
2365099569,19cyclictest3248-21ntp_states07:55:240
2365099569,16cyclictest9501-21df_inode08:20:140
2365099569,16cyclictest27731-21egrep07:25:120
2365099569,14cyclictest32706-21/usr/sbin/munin09:50:150
2365099568,17cyclictest26256-21/usr/sbin/munin09:25:200
2365099568,16cyclictest10454-21grep12:35:130
2365099566,19cyclictest11878-21/usr/sbin/munin10:35:220
23650995635,13cyclictest13756-21/usr/sbin/munin10:40:300
23650995634,14cyclictest29216-21/usr/sbin/munin07:30:190
23650995634,14cyclictest28457-21runrttasks11:39:150
23650995631,16cyclictest17044-21munin-node10:55:120
23650995618,14cyclictest26554-21latency07:20:190
23650995611,17cyclictest9216-21df12:30:130
23650995610,16cyclictest8219-21/usr/sbin/munin08:15:150
2365099559,18cyclictest6456-21systemctl12:20:010
2365099559,17cyclictest8214-21memory10:20:200
2365099559,17cyclictest1295-21lockfile-create12:00:010
2365099559,16cyclictest30179-21cpu09:40:110
2365099559,15cyclictest31964-21grep07:40:260
2365099559,15cyclictest18512-21df08:55:130
2365099557,18cyclictest30147-21chrt11:45:190
2365099557,14cyclictest17869-21seq08:51:110
23650995531,15cyclictest14668-21/usr/sbin/munin08:40:140
23650995512,17cyclictest10775-21/usr/sbin/munin08:25:130
2365099549,15cyclictest24973-21/usr/sbin/munin09:20:250
2365099547,15cyclictest7360-21grep08:10:310
23650995432,14cyclictest23705-21df09:15:120
23650995430,15cyclictest30046-21latency_hist09:40:020
23650995320,21cyclictest0-21swapper11:30:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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