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2025-12-27 - 02:57

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 all highest latencies:
System rack4slot6s.osadl.org (updated Sat Dec 27, 2025 00:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1519622440,3sleep015194-21ls21:50:170
1003622230,3sleep010039-21missed_timers21:30:190
1127521190,2sleep011276-21uname21:35:190
142121170,3chrt1422-21sshd23:02:000
1973621090,3chrt19735-21sshd00:13:400
69721060,4chrt695-21ls20:55:010
617721030,4sleep06183-21df_inode19:10:130
1769921030,4chrt17700-21cat22:00:150
1642121010,3sleep016425-21ntp_kernel_err00:00:200
127192990,2sleep012756-21load19:35:170
241092860,4sleep024202-21modprobe20:20:030
205022834,8sleep020567-21wc00:15:290
186642750,2sleep018660-21latency_hist00:10:010
510827316,32sleep05113-21ntp_states19:05:200
238542710,3sleep023852-21latency_hist00:30:010
98952680,3sleep09974-21wc19:25:010
602699637,23cyclictest5750-21sshd21:14:280
6026996331,22cyclictest26929-21/usr/sbin/munin22:35:250
285092620,2sleep028510-21which20:35:250
6026996124,12cyclictest10307-21ntpq19:25:240
602699599,16cyclictest25463-21ntpq00:35:190
602699596,17cyclictest30539-21cron20:45:000
6026995933,16cyclictest9022-21/usr/sbin/munin21:25:260
6026995933,16cyclictest14421-21runrttasks23:52:500
6026995931,16cyclictest8469-21/usr/sbin/munin23:30:160
6026995923,14cyclictest1-21systemd20:55:270
6026995910,18cyclictest30776-21ntp_states22:50:210
602699589,18cyclictest3843-21/usr/sbin/munin21:05:280
602699589,17cyclictest31917-21irqstats22:55:170
602699589,16cyclictest27927-21/usr/sbin/munin22:40:190
602699588,17cyclictest29277-21df_inode22:45:170
602699587,17cyclictest25507-21/usr/sbin/munin20:25:190
6026995833,16cyclictest7859-21/usr/sbin/munin21:20:250
6026995833,16cyclictest18001-21/usr/sbin/munin19:55:200
6026995833,15cyclictest23379-21/usr/sbin/munin20:15:270
6026995811,17cyclictest7388-21ntpq23:25:230
6026995810,18cyclictest15472-21ntpq19:45:250
6026995810,16cyclictest5066-21/usr/sbin/munin23:15:280
6026995810,16cyclictest14105-21/usr/sbin/munin21:45:250
100542580,2sleep010051-21grep23:35:220
602699579,16cyclictest7407-21/usr/sbin/munin19:15:270
602699579,16cyclictest21617-21/usr/sbin/munin20:10:240
602699579,16cyclictest16555-21ntpq21:55:190
602699579,14cyclictest5948-21/usr/sbin/munin21:15:130
602699578,18cyclictest21710-21ntpq22:15:200
602699578,16cyclictest1911-21/usr/sbin/munin23:05:230
602699578,14cyclictest24050-21/usr/sbin/munin22:25:150
602699577,18cyclictest3199-21/usr/sbin/munin23:10:280
6026995735,14cyclictest24429-21/usr/sbin/munin00:30:270
6026995733,16cyclictest20573-21/usr/sbin/munin22:10:260
6026995710,15cyclictest20333-21/usr/sbin/munin20:05:120
602699568,14cyclictest13936-21df19:40:120
602699566,19cyclictest19044-21/usr/sbin/munin20:00:250
6026995633,15cyclictest12559-21/usr/sbin/munin21:40:140
6026995610,18cyclictest6075-21ntpq23:20:190
602699558,23cyclictest22823-21df22:20:140
602699558,16cyclictest26789-21/usr/sbin/munin20:30:160
602699558,14cyclictest30665-21/usr/sbin/munin20:45:200
602699557,15cyclictest2261-21load21:00:180
6026995532,15cyclictest19822-21runrttasks22:08:160
6026995531,17cyclictest17663-21latency_hist19:55:010
6026995530,14cyclictest15070-21/usr/sbin/munin23:55:190
6026995524,18cyclictest11290-21munin-node19:30:100
6026995510,15cyclictest13397-21cron23:49:590
602699549,16cyclictest25606-21ntpq22:30:210
6026995430,16cyclictest11189-21/usr/sbin/munin23:40:190
6026995310,14cyclictest21398-21seq00:20:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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