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2026-01-07 - 19:48

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 Wed Jan 07, 2026 12:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2379422740,3sleep023795-21cat12:15:270
2212822490,3sleep022131-21run-parts08:00:010
1057821580,3sleep010574-21latency_hist07:15:020
92479911181,18cyclictest288-21snmpd09:44:170
92479910879,16cyclictest10681-21/usr/sbin/munin09:20:170
92479910875,20cyclictest26137-21seq12:25:210
92479910778,18cyclictest19560-21df_inode09:55:140
92479910682,14cyclictest15305-21seq09:38:290
92479910680,16cyclictest11732-21cat11:30:130
92479910678,14cyclictest3163-21uptime10:55:290
92479910676,19cyclictest21917-21ls12:10:010
92479910669,22cyclictest14100-21sshd07:27:390
92479910668,24cyclictest31292-21/usr/sbin/munin08:35:200
789921060,3chrt7902-21cpu09:10:130
92479910571,19cyclictest9469-21ntp_states09:15:240
92479910482,11cyclictest30166-21ntp_states10:35:210
92479910480,13cyclictest18529-21irqstats07:45:130
92479910480,12cyclictest31189-21/usr/sbin/munin10:40:260
92479910477,16cyclictest25003-21sendmail_mailtr12:20:260
92479910467,22cyclictest28728-21/usr/sbin/munin08:25:210
92479910380,14cyclictest19320-21grep12:00:010
92479910380,13cyclictest27969-21chrt12:32:260
92479910378,15cyclictest11560-21date11:30:020
92479910378,13cyclictest23216-21latency_hist12:15:020
92479910377,14cyclictest2629-21cat08:50:010
92479910377,14cyclictest18661-21mailstats09:50:250
92479910375,17cyclictest468-21/usr/sbin/munin08:40:250
92479910375,17cyclictest4279-21ntp_states08:55:210
92479910361,16cyclictest23472-21/usr/sbin/munin10:10:110
659221030,4sleep06637-21/usr/sbin/munin09:05:110
2498821030,2sleep025029-21memory08:10:180
92479910279,13cyclictest7304-21chrt11:12:250
92479910279,13cyclictest11665-21chrt07:18:570
92479910278,14cyclictest16981-21df09:45:100
92479910278,14cyclictest14553-21/usr/sbin/munin11:40:210
92479910277,15cyclictest17166-21df07:40:130
92479910277,12cyclictest27110-21sshd10:24:250
92479910276,16cyclictest16673-21latency_hist11:50:010
92479910176,15cyclictest2493-21ls10:55:020
92479910176,15cyclictest19734-21df_inode07:50:130
92479910176,13cyclictest8609-21seq11:17:330
92479910176,12cyclictest4325-21/usr/sbin/munin11:00:250
92479910174,15cyclictest23773-21sort08:05:180
92479910173,16cyclictest5364-21df_inode09:00:140
92479910165,21cyclictest30009-21/usr/sbin/munin08:30:270
92479910163,23cyclictest5325-21irqstats11:05:170
92479910078,13cyclictest27601-21ntp_states10:25:210
92479910075,14cyclictest276-21runrttasks09:34:010
92479910074,14cyclictest12139-21memory07:20:180
92479910073,16cyclictest25004-21ntpq10:15:210
92479910073,16cyclictest13058-21irqstats11:35:140
92479910072,17cyclictest17052-21latency_hist07:40:010
9247999976,14cyclictest9127-21df_inode11:20:130
9247999975,13cyclictest3149-21runrttasks08:50:250
9247999973,14cyclictest27615-21latency08:20:170
9247999969,17cyclictest22184-21cpu10:05:130
9247999965,21cyclictest14519-21/usr/sbin/munin07:30:210
9247999964,20cyclictest17126-21/usr/sbin/munin11:50:240
9247999874,14cyclictest28654-21df10:30:140
9247999871,17cyclictest21276-21mailstats10:00:250
9247999775,13cyclictest29108-21seq12:36:130
9247999774,14cyclictest27306-21munin-run08:20:020
9247999772,13cyclictest12790-21chrt09:28:530
9247999764,21cyclictest19390-21/usr/sbin/munin12:00:110
9247999761,23cyclictest32532-21df_inode10:45:140
9247999574,13cyclictest22329-21df_inode08:00:130
9247999471,14cyclictest9293-21latency_hist07:10:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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