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2026-04-12 - 08:31

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 Sun Apr 12, 2026 00:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
685622540,3sleep06854-21ls00:20:260
2748022420,3sleep027478-21grep23:35:240
22553211818,81sleep022557-21sh19:05:220
1042921170,3chrt10430-21latency_hist20:25:010
1467821100,3sleep014183-21/usr/sbin/munin22:45:290
403921010,4sleep04107-21/usr/sbin/munin00:10:240
72821000,3sleep0729-21awk19:45:280
156412930,3sleep015643-21cpu20:45:130
261832920,3sleep026245-21ntpq21:25:200
238742920,2sleep023919-21processes19:10:230
123562910,4sleep012358-21users20:30:300
302832890,4sleep030350-21grep21:40:270
23459998762,14cyclictest23876-21users23:20:300
23459998757,19cyclictest402-21/usr/sbin/munin21:50:260
23459998660,15cyclictest19634-21ntp_states23:05:210
23459998659,15cyclictest21398-21users21:05:290
23459998561,15cyclictest8887-21runrttasks20:18:480
23459998560,14cyclictest4137-21ntp_offset22:05:220
23459998556,18cyclictest6629-21/usr/sbin/munin22:15:200
23459998556,17cyclictest29479-21seq19:31:420
23459998460,15cyclictest16095-21seq22:50:420
23459998458,14cyclictest32557-21ls19:45:020
23459998456,15cyclictest24979-21mailstats23:25:260
23459998456,15cyclictest17525-21seq20:50:300
23459998452,19cyclictest27274-21/usr/sbin/munin21:30:260
23459998447,23cyclictest27617-21grep19:25:170
23459998361,14cyclictest10668-21runrttasks00:35:280
23459998358,14cyclictest5185-21chrt00:15:180
23459998357,14cyclictest9311-21ntp_states22:25:220
23459998354,18cyclictest3972-21ls20:00:010
23459998257,15cyclictest26560-21runrttasks23:31:220
23459998257,15cyclictest24994-21ntp_states21:20:220
23459998251,18cyclictest288-21snmpd00:32:500
23459998157,13cyclictest3776-21cat22:05:010
23459998152,16cyclictest10358-21df22:30:140
23459998056,14cyclictest32437-21/usr/sbin/munin23:55:180
23459998055,14cyclictest31181-21idleruntime-cro19:39:590
23459998055,14cyclictest1338-21/usr/sbin/munin21:55:150
23459998052,15cyclictest8190-21users00:25:290
23459998051,17cyclictest15531-21wc20:45:000
23459998046,22cyclictest16747-21/usr/sbin/munin22:55:260
23459998046,18cyclictest13317-21ntpq20:35:210
23459997955,14cyclictest22737-21runrttasks21:10:450
23459997954,14cyclictest25987-21runrttasks19:19:530
23459997952,15cyclictest30017-21ntp_states23:45:220
23459997950,17cyclictest19406-21latency_hist21:00:020
23459997950,16cyclictest13189-21ntpq22:40:220
261432780,2sleep026144-21date19:20:020
23459997856,13cyclictest5274-21latency_hist20:05:020
23459997855,13cyclictest1287-21irqstats00:00:180
23459997854,14cyclictest23142-21munin-run23:20:020
23459997853,13cyclictest12180-21users22:35:300
23459997853,12cyclictest5425-21ntp_states22:10:210
23459997852,14cyclictest23671-21ntpq21:15:210
23459997851,15cyclictest6053-21seq20:06:380
23459997848,21cyclictest1-21systemd19:55:020
23459997654,12cyclictest276-21runrttasks20:27:010
23459997651,15cyclictest18202-21irqstats23:00:170
23459997649,15cyclictest3086-21sshd00:05:540
23459997648,18cyclictest276-21runrttasks22:20:120
23459997645,20cyclictest216-21rs:main0
23459997553,14cyclictest1-21systemd23:55:020
23459997552,14cyclictest6879-21ntp_states20:10:220
23459997550,14cyclictest20970-21ntp_states23:10:230
23459997452,13cyclictest31199-21df21:45:130
23459997440,21cyclictest19517-21/usr/sbin/munin21:00:120
23459997242,17cyclictest28493-21df23:40:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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