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2026-05-30 - 08:13

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 376 highest latencies:
System rack4slot6s.osadl.org (updated Sat May 30, 2026 00:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2411921200,3chrt24117-21irqstats19:55:160
12264991167,15cyclictest14964-21/usr/sbin/munin19:20:170
1780321150,4chrt17802-21awk23:40:290
12264991157,18cyclictest3062-21cat20:40:020
12264991157,17cyclictest26206-21/usr/sbin/munin00:15:130
12264991157,14cyclictest20009-21df_inode21:45:130
3227521140,4chrt32274-21sed20:25:270
12264991149,90cyclictest25540-21ntpq20:00:180
1606121130,3chrt16060-21sed23:35:180
12264991139,90cyclictest31686-21if_eth022:30:130
12264991138,13cyclictest28808-21seq00:25:090
12264991129,88cyclictest18851-21/usr/sbin/munin21:40:180
12264991129,14cyclictest14409-21seq19:16:460
12264991128,17cyclictest13383-21df_inode23:25:130
12264991128,15cyclictest27968-21ntpq22:15:220
12264991128,14cyclictest11375-21swap21:10:250
12264991128,12cyclictest15800-21latency_hist23:35:010
12264991127,14cyclictest30458-21/usr/sbin/munin20:20:210
12264991126,16cyclictest31531-21ls22:30:020
12264991119,14cyclictest15381-21users21:25:290
12264991119,13cyclictest18585-21cut21:40:010
12264991118,17cyclictest32616-21cat00:40:010
12264991118,16cyclictest8121-21sed23:05:020
12264991118,16cyclictest29185-21memory22:20:170
12264991118,15cyclictest19252-21chrt23:46:540
12264991117,15cyclictest14585-21runrttasks21:24:260
12264991117,13cyclictest28046-21memory20:10:180
12264991116,15cyclictest14492sleep022:39:180
12264991115,12cyclictest25112-21/usr/sbin/munin22:05:180
122649911120,70cyclictest5150-21runrttasks20:46:200
12264991109,15cyclictest22407-21df00:00:120
12264991109,14cyclictest27717-21memory00:20:180
12264991108,13cyclictest1170-21vmstat20:30:290
12264991108,12cyclictest5837-21ntp_states22:55:210
12264991108,12cyclictest12448-21/usr/sbin/munin19:10:130
12264991107,88cyclictest19256-21sendmail_mailtr19:35:250
12264991107,15cyclictest30814-21seq00:31:260
12264991107,15cyclictest18477-21sshd19:33:170
12264991107,14cyclictest3273-21ntp_states22:45:210
12264991106,16cyclictest17005-21runrttasks21:33:140
12264991106,15cyclictest22881-21memory19:50:180
12264991106,13cyclictest8685-21/usr/sbin/munin23:05:290
12264991099,87cyclictest20329-21/usr/sbin/munin19:40:170
12264991098,15cyclictest22535-21seq19:49:490
12264991098,13cyclictest9893-21ntp_states21:05:210
12264991098,13cyclictest4451-21/usr/sbin/munin22:50:180
12264991097,14cyclictest1887-21memory22:40:170
12264991097,12cyclictest10977-21ntpq23:15:170
12264991096,16cyclictest7298-21ntpq20:55:220
12264991096,15cyclictest23264-21chrt21:56:410
12264991088,88cyclictest3221-21df_inode20:40:130
12264991088,88cyclictest24938-21wc00:10:130
12264991088,86cyclictest9535-21grep21:05:010
12264991087,16cyclictest24116-21ntpq22:00:210
12264991087,13cyclictest26863-21mailstats22:10:250
12264991087,12cyclictest12931-21seq23:22:540
12264991087,11cyclictest23927-21runrttasks00:05:220
12264991086,15cyclictest22259-21date00:00:020
12264991086,12cyclictest26858-21/usr/sbin/munin20:05:210
12264991078,12cyclictest29772-21seq20:15:410
12264991078,11cyclictest20981-21sed23:55:010
12264991077,14cyclictest12648-21mailstats21:15:250
12264991075,15cyclictest16762-21threads19:25:250
12264991075,12cyclictest6505-21chrt20:51:570
12264991068,85cyclictest21672-21mailstats21:50:250
12264991057,11cyclictest101502sleep023:11:260
1226499987,19cyclictest12295-21latency_hist19:10:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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