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2025-10-17 - 00:37

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 100 highest latencies:
System rack4slot6s.osadl.org (updated Thu Oct 16, 2025 12:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2755922090,2sleep027560-21awk10:50:310
372621370,4chrt3727-21latency11:25:170
1682121320,4chrt16819-21df_inode08:05:130
1835721310,3chrt18358-21ls12:20:290
1444721270,3sleep014450-21fgrep10:00:270
24309912329,14cyclictest1099-21/usr/sbin/munin11:15:170
24309912127,13cyclictest10818-21/usr/sbin/munin07:40:290
2430991198,15cyclictest20950-21mailstats10:25:290
2430991188,14cyclictest7310-21munin-run11:40:010
24309911832,14cyclictest9935-21latency_hist11:50:010
24309911829,15cyclictest5742-21/usr/sbin/munin07:20:290
24309911724,15cyclictest7973-21ntpq07:30:180
24309911628,13cyclictest25668-21cron08:40:000
24309911529,13cyclictest2723-21memory07:10:190
24309911524,15cyclictest29738-21/usr/sbin/munin11:00:180
24309911511,17cyclictest21935-21ntpq12:35:200
2430991147,12cyclictest12728-21/usr/sbin/munin09:55:310
24309911427,14cyclictest5093-21latency_hist07:20:030
24309911427,14cyclictest1-21systemd11:05:270
2430991139,15cyclictest2677-21ntp_states09:15:390
2430991139,15cyclictest13353-21sshd12:01:320
24309911329,13cyclictest20549-21/usr/sbin/munin12:30:180
24309911324,15cyclictest3375-21seq11:24:330
24309911324,15cyclictest30953-21latency_hist09:00:020
24309911320,16cyclictest23347-21ntpq10:35:210
24309911225,14cyclictest4154-21/usr/sbin/munin09:20:270
24309911222,14cyclictest17713-21seq10:14:320
24309911221,16cyclictest16770-21ntpq12:15:230
24309911212,20cyclictest21987-21memory10:30:200
2430991117,13cyclictest18052-21runrttasks10:15:170
24309911123,15cyclictest32126-21runrttasks11:10:080
24309911119,15cyclictest28973-21users08:50:290
24309911112,20cyclictest14496-21users12:05:320
24309911110,19cyclictest6469-21memory09:30:180
2430991108,15cyclictest19667-21/usr/sbin/munin12:25:280
24309911022,13cyclictest7982-21mailstats09:35:280
24309911021,16cyclictest11048-21runrttasks09:47:470
24309911020,15cyclictest15227-21seq07:59:240
24309911011,20cyclictest22222-21ntpq08:25:210
2430991097,16cyclictest19755-21tr08:15:280
24309910912,22cyclictest9470-21users09:40:300
24309910910,22cyclictest11298-21/usr/sbin/munin11:55:310
24309910910,20cyclictest25814-21/usr/sbin/munin08:40:310
24309910910,20cyclictest10016-21/usr/sbin/munin11:50:320
2430991086,13cyclictest26664-21seq10:48:400
2430991085,15cyclictest5011-21latency11:30:180
24309910827,15cyclictest16347-21runrttasks08:02:430
24309910823,12cyclictest12169-21/usr/sbin/munin07:45:290
2430991079,18cyclictest18482-21/usr/sbin/munin08:10:260
2430991077,15cyclictest23358-21/usr/sbin/munin08:30:160
24309910711,12cyclictest28283-21cut08:50:010
2430991068,15cyclictest32279-21egrep09:05:120
2430991068,14cyclictest12865-21/usr/sbin/munin07:50:210
2430991067,15cyclictest6423-21/usr/sbin/munin07:25:250
24309910622,14cyclictest31967-21seq09:03:380
24309910610,20cyclictest1159-21runrttasks09:10:130
2430991058,16cyclictest16440-21runrttasks10:09:400
24309910524,12cyclictest9283-21ntp_states07:35:230
24309910510,17cyclictest24397-21/usr/sbin/munin10:40:330
2430991049,14cyclictest16348-21latency_hist12:15:020
2430991046,18cyclictest28712-21/usr/sbin/munin10:55:260
2430991046,12cyclictest20712-21seq08:20:160
2430991037,14cyclictest8659-21latency_hist11:45:010
24309910311,18cyclictest5135-21irqstats09:25:130
2430991028,14cyclictest19290-21df_inode10:20:150
2430991028,14cyclictest11880-21systemctl09:50:340
134327821,35sleep01374-21/usr/sbin/munin07:05:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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