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2026-07-22 - 07:29

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 792 highest latencies:
System rack4slot6s.osadl.org (updated Wed Jul 22, 2026 00:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3216221360,3chrt32159-21ntp_states19:50:200
1736721350,2sleep017365-21awk21:00:010
1760621270,3sleep017605-21ntp_offset23:05:200
2930021220,4chrt29301-21processes23:50:260
2561221160,4chrt25609-21ps21:30:250
888321150,3chrt8881-21users22:30:310
980521140,4sleep09811-21df_inode20:30:130
214489911085,13cyclictest18324-21seq21:02:140
1901821100,4chrt19016-21ls21:05:220
214489910979,16cyclictest29133-21/usr/sbin/munin21:45:180
214489910779,17cyclictest6408-21runrttasks22:21:100
214489910779,15cyclictest25357-21cat19:25:020
214489910678,18cyclictest22689-21memory23:25:180
214489910677,16cyclictest20087-21/usr/sbin/munin21:10:300
214489910672,20cyclictest14731-21/usr/sbin/munin22:55:260
214489910576,17cyclictest23849-21seq23:30:130
214489910576,16cyclictest14265-21runrttasks20:45:460
214489910573,19cyclictest26113-21chrt23:39:100
214489910479,16cyclictest1289-21chrt22:01:330
214489910478,15cyclictest11009-21modprobe20:35:020
214489910476,15cyclictest5645-21sshd20:14:170
214489910476,13cyclictest23848-21latency_hist21:25:020
214489910475,16cyclictest25783-21/usr/sbin/munin19:25:250
214489910379,14cyclictest15301-21/usr/sbin/munin20:50:260
214489910376,16cyclictest31594-21df_inode00:00:140
214489910376,16cyclictest30904-21seq23:56:060
214489910375,15cyclictest28713-21chrt19:36:210
214489910276,15cyclictest22542-21seq19:13:420
214489910276,14cyclictest419-21df_inode00:05:130
214489910276,13cyclictest3476-21chrt22:10:260
214489910268,21cyclictest27206-21wc19:30:270
214489910267,20cyclictest3949-21seq00:18:510
214489910177,15cyclictest1862-21latency_hist20:00:020
214489910177,15cyclictest12644-21ntp_states20:40:260
214489910177,14cyclictest30600-21memory21:50:170
214489910177,14cyclictest24027-21df21:25:140
214489910177,14cyclictest14420-21seq22:53:340
214489910177,13cyclictest31833-21cat19:50:010
214489910175,15cyclictest1925-21fw_packets22:05:180
214489910175,14cyclictest2194-21memory20:00:180
214489910173,18cyclictest21814-21users23:20:290
214489910076,14cyclictest26597-21df21:35:140
214489910076,13cyclictest4589-21/usr/sbin/munin22:15:180
214489910075,15cyclictest29597-21ntp_states19:40:220
214489910075,14cyclictest2864-21cat00:15:020
214489910073,13cyclictest3588-21seq20:05:220
214489910068,19cyclictest9571-21munin-node22:35:120
214489910065,22cyclictest21366-21/usr/sbin/munin21:15:180
214489910064,23cyclictest12162-21/usr/sbin/munin22:45:280
21448999975,15cyclictest6009-21irqstats20:15:180
21448999975,14cyclictest4542-21ntp_states00:20:220
21448999975,14cyclictest11300-21mailstats22:40:260
21448999975,13cyclictest23062-21sed19:15:220
21448999973,14cyclictest27995-21irqstats21:40:180
21448999971,15cyclictest8027-21chrt20:22:260
21448999969,18cyclictest19898-21/usr/sbin/munin23:15:220
21448999874,14cyclictest8520-21df20:25:140
21448999873,13cyclictest21492-21latency_hist19:10:020
21448999870,14cyclictest276-21runrttasks00:37:130
21448999768,16cyclictest68942sleep000:30:140
21448999767,18cyclictest31967-21ntpq21:55:210
21448999763,20cyclictest16908-21chrt23:02:360
21448999756,27cyclictest265232sleep023:40:170
21448999674,12cyclictest28643-21seq23:48:380
21448999670,15cyclictest18668-21df23:10:140
21448999663,22cyclictest6069-21/usr/sbin/munin00:25:290
21448999572,13cyclictest7579-21cat22:25:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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