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2025-11-08 - 15:36

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #7

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: 50.5 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rack5slot7s.osadl.org (updated Sat Nov 08, 2025 12:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28354224302190,95sleep00-21swapper07:06:510
287519916417,24cyclictest13920-21apt-get08:55:290
287519916319,101cyclictest31514-21apt-get07:26:290
287519916314,47cyclictest27785-21head10:16:150
287519916018,22cyclictest16558-21apt-get12:30:370
287519915911,103cyclictest29980-21/usr/sbin/munin07:15:420
287519915816,118cyclictest21432-21df_inode09:40:300
287519915714,120cyclictest2014-21/usr/sbin/munin11:00:240
287519915714,101cyclictest2094-21/usr/sbin/munin07:40:490
287519915710,124cyclictest10804-21uname08:35:420
287519915640,94cyclictest8714-21mailstats08:21:000
287519915628,20cyclictest0-21swapper09:15:420
287519915618,24cyclictest8284-21munin-run11:40:020
287519915617,24cyclictest31516-21munin-run07:25:050
287519915617,117cyclictest5308-21tr08:00:500
287519915615,25cyclictest10904-21diskstats11:55:350
287519915534,21cyclictest5765-21ls11:21:040
287519915524,18cyclictest23170-21cat09:50:460
287519915517,114cyclictest24537-21apt-config10:00:110
287519915517,112cyclictest8404-21apt-get11:40:210
287519915516,115cyclictest29561-21munin-node07:15:080
287519915414,117cyclictest6050-21memory08:05:460
287519915414,115cyclictest12422-21/usr/sbin/munin08:45:420
287519915329,25cyclictest16848-21grep09:10:540
287519915318,22cyclictest29698-21df_inode10:30:300
287519915312,116cyclictest11668-21cat12:00:120
287519915310,114cyclictest29142-21/usr/sbin/munin10:25:560
287519915240,91cyclictest9237-21latency08:25:440
287519915219,40cyclictest25572-21apt-get10:05:150
287519915219,110cyclictest28095-21df10:20:270
287519915217,109cyclictest980-21apt-get07:35:190
287519915215,114cyclictest12146-21munin-run08:45:010
287519915214,23cyclictest5067-21munin-run11:20:040
287519915210,24cyclictest25056-21ntpq10:01:300
287519915123,106cyclictest0-21swapper08:55:070
287519915118,110cyclictest30493-21df_inode10:35:290
287519915116,22cyclictest16558-21apt12:30:000
287519915115,112cyclictest15761-21apt12:25:010
287519915112,116cyclictest6269-21awk11:25:510
28751991509,116cyclictest31863-21snmpd11:30:350
287519915018,36cyclictest10693-21munin-run11:55:010
287519915018,22cyclictest14337-21df_inode12:15:260
287519915015,22cyclictest31317-21df_inode10:40:300
287519915014,99cyclictest28851-1kworker/u3:307:30:200
287519915013,27cyclictest1846-21munin-run11:00:020
287519915013,115cyclictest2884-21grep07:45:500
287519915013,115cyclictest13962-21switchtime12:11:010
287519914917,25cyclictest17691-21apt-get12:35:160
287519914915,113cyclictest3457-21munin-run11:10:010
287519914819,24cyclictest9830-21apt-get08:30:180
287519914817,27cyclictest32251-21memory10:45:570
287519914817,25cyclictest14897-21apt-get09:00:300
287519914813,26cyclictest18113-21/usr/sbin/munin09:20:280
287519914810,41cyclictest19402-21cut09:25:580
287519914736,92cyclictest12645-21apt-get12:05:170
287519914732,21cyclictest3717-21if_eth011:10:370
287519914719,23cyclictest3394-21apt-get07:50:200
287519914717,26cyclictest22122-21/usr/sbin/munin09:46:020
287519914716,25cyclictest16344-21users09:06:060
287519914711,112cyclictest20501-21/usr/sbin/munin09:35:390
287519914636,90cyclictest4893-21munin-run08:00:020
287519914630,20cyclictest0-21swapper09:30:520
287519914622,97cyclictest7405-21apt-get08:15:220
287519914615,25cyclictest6927-21ntp_states08:10:560
287519914513,24cyclictest27112-21sed10:15:030
287519914511,109cyclictest444-21sh10:50:260
287519914214,24cyclictest9893-21latency_hist11:50:050
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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