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2025-12-05 - 04:31

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 Fri Dec 05, 2025 00:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1455121290,3chrt14552-21idleruntime19:50:150
1560221270,2sleep015601-21df00:05:130
1039321230,2sleep010394-21cut21:40:020
40229911911,16cyclictest14676-21awk00:00:290
4022991189,15cyclictest10906-21proc_pri19:35:240
40229911810,18cyclictest12109-21/usr/sbin/munin21:45:280
40229911711,17cyclictest28001-21users20:40:310
4022991158,23cyclictest16839-21seq00:10:130
4022991158,15cyclictest1693-21ntp_states21:05:250
4022991157,21cyclictest13509-21/usr/sbin/munin23:55:330
4022991149,17cyclictest8598-21sshd21:31:270
4022991149,16cyclictest32532-21/usr/sbin/munin23:05:160
4022991148,17cyclictest5189-21sendmail-msp21:20:010
40229911427,15cyclictest26210-21/usr/sbin/munin20:35:160
40229911424,13cyclictest20426-21seq20:12:020
40229911423,12cyclictest21604-21runrttasks22:21:560
40229911421,13cyclictest19582-21/usr/sbin/munin00:20:180
40229911331,14cyclictest32052-21runrttasks20:57:050
40229911328,12cyclictest30543-21sort20:50:320
40229911321,14cyclictest16162-21readlink19:55:280
4022991129,15cyclictest14511-21/usr/sbin/munin21:55:200
40229911224,13cyclictest23029-21runrttasks22:28:060
40229911222,14cyclictest108-21systemd-journal23:54:270
40229911221,14cyclictest108-21systemd-journal22:37:550
40229911211,21cyclictest23599-21ntp_states00:35:290
40229911210,23cyclictest18572-21sshd22:10:270
4022991118,18cyclictest12792-21runrttasks19:42:570
40229911130,14cyclictest25597-21runrttasks20:32:000
40229911127,13cyclictest24584-21latency_hist22:35:000
4022991109,17cyclictest20734-21/usr/sbin/munin00:25:290
4022991107,18cyclictest27773-21/usr/sbin/munin22:45:290
40229911023,15cyclictest1323-21latency_hist21:05:020
40229911022,14cyclictest108-21systemd-journal00:18:130
40229911021,13cyclictest279-21sshd23:35:270
40229911021,13cyclictest25830-21kworker/u2:223:15:010
40229911020,14cyclictest9300-21ntpq23:40:190
40229911011,17cyclictest28844-21ntp_states22:50:240
40229911011,16cyclictest10926-21users23:45:320
40229911010,19cyclictest14336-21munin-run19:50:000
4022991099,18cyclictest5361-21runrttasks21:20:120
4022991099,18cyclictest28690-21/usr/sbin/munin20:45:190
4022991098,29cyclictest22189-21snmpd19:30:290
40229910921,12cyclictest30143-21ntpq22:55:260
40229910919,15cyclictest18576-21/usr/sbin/munin20:05:210
40229910911,20cyclictest22313-21ntp_states00:30:280
4022991089,27cyclictest6515-21df_inode23:30:160
4022991088,18cyclictest5165-21/usr/sbin/munin23:25:180
4022991088,17cyclictest17060-21/usr/sbin/munin20:00:190
40229910820,14cyclictest21219-21ntpq20:15:250
40229910812,17cyclictest4164-21ntp_states23:20:230
40229910811,17cyclictest5671-21ntpq19:15:200
40229910811,16cyclictest32324-21awk23:05:000
4022991078,22cyclictest25994-21/usr/sbin/munin22:40:200
4022991078,17cyclictest23527-21/usr/sbin/munin20:25:320
4022991078,16cyclictest11555-21sshd21:44:270
4022991077,18cyclictest13039-21/usr/sbin/munin21:50:310
4022991076,14cyclictest5276-21latency_hist19:15:000
40229910725,13cyclictest2837-21ntp_offset23:15:220
40229910710,16cyclictest19791-21ntp_states22:15:220
40229910710,15cyclictest16988-21/usr/sbin/munin22:05:140
4022991068,18cyclictest2696-21/usr/sbin/munin21:10:140
40229910630,14cyclictest23380-21runrttasks20:24:550
4022991059,16cyclictest6598-21/usr/sbin/munin21:25:250
40229910510,18cyclictest6775-21df19:20:120
4022991049,28cyclictest15927-21ntp_states22:00:220
40229910411,16cyclictest8290-21ntp_states19:25:200
337327921,32sleep03399-21users19:05:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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