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2026-05-22 - 03:43

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 May 22, 2026 00:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2563821270,4chrt25636-21df21:55:130
1666821220,4chrt16664-21ntpq23:25:210
1659521210,3sleep016598-21basename19:15:000
628421200,4chrt6282-21df_inode20:40:120
1541221060,3sleep015454-21proc_pri23:20:250
1803321030,4sleep018078-21cpu19:20:090
215492894,8sleep021553-21cpu23:45:100
164602855,8sleep016521-21wc21:20:020
232082775,59sleep023270-21ntpq21:45:190
309482710,3sleep030947-21ps00:20:250
1440427118,31sleep014430-21ntp_states19:05:260
296252680,2sleep029622-21cat22:10:170
15328996322,15cyclictest17997-21latency_hist19:20:020
15328996135,17cyclictest5362-21/usr/sbin/munin22:40:280
15328996133,17cyclictest11296-21/usr/sbin/munin23:05:140
1532899609,19cyclictest24762-21ntp_states19:45:220
1532899608,17cyclictest10075-21/usr/sbin/munin20:55:190
15328996034,15cyclictest26765-21/usr/sbin/munin00:05:110
15328996020,14cyclictest114-21systemd-journal22:17:080
15328996010,16cyclictest32725-21awk20:15:270
1532899599,16cyclictest2941-21/usr/sbin/munin20:25:290
1532899599,15cyclictest1988-21/usr/sbin/munin00:35:120
15328995933,17cyclictest12606-21/usr/sbin/munin23:10:130
15328995933,16cyclictest12760-21/usr/sbin/munin21:05:140
1532899589,16cyclictest29639-21/usr/sbin/munin20:05:260
1532899589,16cyclictest27045-21/usr/sbin/munin19:55:150
1532899589,16cyclictest25756-21/usr/sbin/munin19:50:120
1532899588,16cyclictest6052-21/usr/sbin/munin22:45:190
1532899588,15cyclictest23023-21/usr/sbin/munin23:50:180
15328995833,16cyclictest18378-21/usr/sbin/munin21:25:280
15328995831,18cyclictest29377-21/usr/sbin/munin00:15:140
15328995811,20cyclictest28058-21df_inode00:10:140
15328995811,17cyclictest17968-21ntp_states23:30:230
1532899579,15cyclictest28182-21/usr/sbin/munin22:05:180
1532899578,19cyclictest21734-21/usr/sbin/munin21:40:270
1532899578,15cyclictest3633-21/usr/sbin/munin20:30:200
1532899578,15cyclictest10274-21/usr/sbin/munin23:00:240
15328995733,16cyclictest24307-21runrttasks23:55:190
15328995733,15cyclictest978-21/usr/sbin/munin22:25:150
15328995711,15cyclictest19214-21ntpq23:35:190
15328995710,17cyclictest21932-21df19:35:110
15328995710,17cyclictest21038-21/usr/sbin/munin19:30:260
1532899569,17cyclictest3929-21mailstats22:35:270
1532899569,15cyclictest31889-21egrep00:25:110
1532899569,14cyclictest32071-21/usr/sbin/munin22:20:250
1532899568,16cyclictest9075-21/usr/sbin/munin20:50:190
1532899568,16cyclictest1-21systemd19:40:080
1532899568,15cyclictest8666-21cpu22:55:120
1532899568,15cyclictest20270-21/usr/sbin/munin23:40:200
1532899567,17cyclictest1065-21/usr/sbin/munin20:20:260
1532899567,15cyclictest20428-21/usr/sbin/munin21:35:280
1532899566,18cyclictest19318-21/usr/sbin/munin19:25:170
1532899566,16cyclictest11389-21/usr/sbin/munin21:00:150
15328995633,14cyclictest16660-21/usr/sbin/munin21:20:140
15328995611,15cyclictest19204-21df_inode21:30:130
15328995610,16cyclictest4914-21/usr/sbin/munin20:35:250
1532899559,14cyclictest31005-21/usr/sbin/munin20:10:130
1532899559,13cyclictest28496-21irqstats20:00:160
1532899558,17cyclictest288-21snmpd22:50:080
1532899558,16cyclictest2184-21grep22:30:120
1532899557,17cyclictest25474-21grep00:00:120
1532899557,15cyclictest702-21/usr/sbin/munin00:30:260
15328995531,16cyclictest27159-21/usr/sbin/munin22:00:190
15328995530,17cyclictest25092-21runrttasks21:52:020
15328995530,16cyclictest14299-21runrttasks21:10:240
15328995528,17cyclictest14797-21runrttasks23:18:480
1532899549,18cyclictest7590-21fw_packets20:45:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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