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2026-08-06 - 17:10

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 Thu Aug 06, 2026 12:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3001222470,2sleep030010-21ls07:40:140
2255122400,4sleep022549-21grep09:15:250
2530822090,2sleep025307-21wc07:20:260
2969021310,2sleep029689-21idleruntime11:50:130
922221280,3chrt9220-21irqstats08:25:150
3180421270,3chrt31802-21users07:45:290
3246721220,4chrt32468-21ntp_kernel_pll_12:00:200
496821210,4chrt4966-21df12:20:110
2493121210,4chrt24926-21ntp_states09:25:220
220699911382,17cyclictest11827-21ntp_states10:40:220
1960821130,3sleep019607-21pluginstate11:10:250
220699910982,16cyclictest8063-21ps10:25:260
220699910982,15cyclictest4377-21chrt08:05:250
220699910982,15cyclictest2911-21ntp_states08:00:220
1827921090,3sleep018277-21ntp_states11:05:210
220699910880,16cyclictest5351-21ntp_states10:15:220
220699910781,15cyclictest28283-21seq07:33:220
220699910780,15cyclictest13015-21df_inode08:40:130
220699910682,13cyclictest20165-21chrt09:06:460
220699910577,16cyclictest1105-21wc10:00:020
220699910479,14cyclictest312-21ntp_states07:50:220
220699910478,15cyclictest10989-21chrt08:30:370
220699910466,22cyclictest24198-21sshd07:16:400
220699910379,13cyclictest15392-21/usr/sbin/munin10:55:250
220699910379,13cyclictest1087-21df_inode12:05:130
220699910378,13cyclictest30459-21chrt09:45:580
220699910377,15cyclictest4221-21/usr/sbin/munin10:10:250
220699910377,14cyclictest24886-21/usr/sbin/munin11:30:260
220699910376,15cyclictest29021-21seq11:46:140
636121020,3sleep06387-21/usr/sbin/munin12:25:180
220699910278,13cyclictest14236-21sendmail-mta08:45:100
220699910277,16cyclictest288-21snmpd11:00:260
220699910277,14cyclictest26112-21df_inode07:25:140
220699910276,16cyclictest8090-21ntp_states08:20:220
220699910275,15cyclictest2648-21irqstats10:05:180
220699910268,22cyclictest2402-21/usr/sbin/munin12:10:150
220699910178,14cyclictest27387-21memory09:35:170
220699910178,13cyclictest28266-21date11:45:010
220699910177,13cyclictest15960-21/usr/sbin/munin08:50:250
220699910175,14cyclictest23749-21/usr/sbin/munin09:20:260
220699910172,17cyclictest23166-21grep11:25:100
220699910169,18cyclictest5488-21sshd08:10:230
220699910165,21cyclictest28798-21ntpq09:40:220
220699910165,21cyclictest12826-21/usr/sbin/munin10:45:170
220699910076,13cyclictest1460-21irqstats07:55:170
220699910073,16cyclictest10300-21/usr/sbin/munin10:35:140
220699910069,18cyclictest18377-21ntpq09:00:200
220699910067,19cyclictest17927-21sshd08:59:500
220699910066,21cyclictest8841-21forks12:35:140
220699910063,24cyclictest14108-21/usr/sbin/munin10:50:140
127421000,3sleep01210-21/usr/sbin/munin10:00:150
22069999974,14cyclictest22938-21runrttasks11:24:140
22069999967,21cyclictest26087-21wc09:30:180
22069999965,21cyclictest31214-21irqstats09:50:140
22069999964,23cyclictest22167-21/usr/sbin/munin07:10:240
22069999963,22cyclictest30892-21/usr/sbin/munin11:55:220
22069999962,24cyclictest4777-21systemctl12:19:590
22069999872,14cyclictest21454-21runrttasks11:17:490
22069999871,15cyclictest11644-21sendmail-mta08:35:100
22069999870,16cyclictest26220-21sort11:35:260
22069999864,21cyclictest6523-21irqstats10:20:140
22069999863,20cyclictest20844-21runrttasks09:10:160
22069999771,15cyclictest9862-21runrttasks10:33:010
22069999770,15cyclictest28796-21seq07:35:150
22069999766,19cyclictest6478-21/usr/sbin/munin08:15:170
22069999663,22cyclictest7479-21/usr/sbin/munin12:30:170
22069999259,21cyclictest22100-21grep07:10:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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