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2026-08-17 - 15:06

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 Mon Aug 17, 2026 12:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2249322420,3sleep022490-21cat10:25:180
1632821990,3sleep016327-21wc07:55:250
2000821230,4chrt20009-21latency08:10:160
1242721230,4chrt12425-21ntpq07:40:240
3183421220,3chrt31835-21timerandwakeup11:00:270
3272521180,3sleep032720-21if_eth011:05:160
552721130,4chrt5528-21latency_hist07:15:010
42649911281,18cyclictest10815-21proc_pri11:45:250
796721110,3chrt7963-21latency_hist09:30:010
42649911182,15cyclictest20854-21munin-run10:20:010
42649910982,16cyclictest15283-21users07:50:290
42649910980,17cyclictest26471-21/usr/sbin/munin08:35:170
42649910980,16cyclictest28669-21sshd08:44:140
42649910979,19cyclictest5311-21/usr/sbin/munin11:25:250
42649910883,14cyclictest14630-21/usr/sbin/munin12:00:210
42649910880,14cyclictest24343-21chrt12:38:340
42649910780,15cyclictest2467-21chrt09:07:370
42649910779,15cyclictest6528-21seq07:17:410
42649910779,15cyclictest26672-21timerandwakeup10:40:290
42649910778,17cyclictest26156-21seq08:34:540
42649910682,14cyclictest25515-21chrt10:36:020
42649910680,15cyclictest8085-21chrt07:24:460
42649910680,15cyclictest11240-21mailstats07:35:250
42649910580,15cyclictest9122-21chrt09:34:130
42649910580,15cyclictest29194-21ntp_states08:45:250
42649910580,14cyclictest19706-21memory12:20:170
42649910578,16cyclictest23885-21irqstats08:25:170
42649910578,15cyclictest5432-21wc09:20:020
42649910577,15cyclictest8654-21wc07:25:250
42649910481,14cyclictest17949-21chrt12:14:010
42649910479,15cyclictest14040-21seq11:58:500
42649910479,14cyclictest16698-21runrttasks10:02:420
42649910478,14cyclictest5138-21runrttasks11:24:420
42649910476,18cyclictest9509-21ls09:35:180
42649910476,14cyclictest22156-21/usr/sbin/munin12:30:130
42649910472,18cyclictest7872-21/usr/sbin/munin11:35:270
42649910379,15cyclictest18482-21/usr/sbin/munin10:10:180
42649910379,14cyclictest23614-21sshd10:30:140
42649910379,14cyclictest18929-21ps08:05:260
42649910378,14cyclictest28862-21irqstats10:50:170
42649910377,14cyclictest31892-21grep08:55:250
42649910377,14cyclictest15612-21seq09:59:380
42649910376,14cyclictest744-21mailstats09:00:260
42649910367,24cyclictest10720-21df09:40:150
42649910277,15cyclictest21065-21ntpq12:25:220
42649910276,15cyclictest9723-21memory07:30:170
42649910276,14cyclictest3822-21runrttasks11:19:410
42649910266,21cyclictest5499-21/usr/sbin/munin09:20:130
42649910265,24cyclictest12003-21sshd09:45:130
42649910179,12cyclictest13695-21ntp_states07:45:220
42649910177,14cyclictest18219-21chrt08:03:090
42649910177,14cyclictest1567-21irqstats11:10:180
42649910177,13cyclictest17457-21ps10:05:250
42649910175,15cyclictest21278-21ntp_states10:20:220
42649910166,19cyclictest11752-21/usr/sbin/munin11:50:150
1848421010,4sleep018486-21ntp_states12:15:220
42649910077,13cyclictest22744-21ntp_states08:20:210
42649910075,16cyclictest13476-21grep09:50:170
42649910071,17cyclictest2896-21/usr/sbin/munin09:10:170
42649910068,20cyclictest28586-21modprobe10:50:010
4264999977,13cyclictest30289-21ntp_states10:55:220
4264999975,14cyclictest9600-21mailstats11:40:260
4264999974,14cyclictest7400-21seq11:32:100
4264999869,18cyclictest21139-21/usr/sbin/munin08:15:160
4264999772,14cyclictest15692-21df_inode12:05:140
4264999768,16cyclictest30179-21/usr/sbin/munin08:50:150
4264999766,18cyclictest4319-21sort07:10:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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