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2025-07-12 - 13:09

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 100 highest latencies:
System rack5slot7s.osadl.org (updated Sat Jul 12, 2025 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31129224282191,93sleep00-21swapper19:09:170
312559916323,24cyclictest7370-21apt20:00:010
312559916013,121cyclictest12742-21apt-get23:51:470
312559915615,24cyclictest14634-21cat20:45:040
312559915613,28cyclictest12907-21sed20:31:040
312559915538,19cyclictest20139-21processes21:16:550
312559915517,40cyclictest1182-21df19:20:250
312559915415,115cyclictest6778-21apt-get23:11:550
312559915415,112cyclictest9876-21apt-get20:15:170
31255991539,43cyclictest12153-21/usr/sbin/munin23:45:250
312559915323,27cyclictest30035-21memory22:16:220
312559915317,110cyclictest26290-21apt-get21:55:280
312559915316,97cyclictest11355-21df23:40:240
312559915315,110cyclictest28859-21/usr/sbin/munin22:10:240
312559915314,22cyclictest9365-21grep20:10:480
312559915313,116cyclictest31419-21apt-get19:10:270
312559915312,116cyclictest16293-21/usr/sbin/munin20:55:580
312559915311,119cyclictest18542-21sed00:21:020
312559915242,87cyclictest6010-21unixbench_singl23:06:020
312559915210,25cyclictest268-21snmpd22:49:000
31255991519,102cyclictest13377-21grep20:35:480
312559915137,93cyclictest5691-21unixbench_singl19:46:060
312559915133,99cyclictest7927-21munin-plugin-st23:20:000
312559915120,26cyclictest18230-21ntp_states21:05:520
312559915116,111cyclictest31353-21munin-run22:25:010
312559915115,26cyclictest23649-21munin-run21:40:020
312559915115,26cyclictest20132-21unixbench_singl00:31:060
312559915112,98cyclictest17785-21munin-run00:20:010
312559915110,30cyclictest10546-21/usr/sbin/munin23:35:380
312559915018,22cyclictest3605-21head22:51:050
312559915017,109cyclictest964-21munin-run19:20:020
312559915016,24cyclictest7600-21df_inode20:00:290
312559915015,24cyclictest755-21irqstats22:35:400
312559915015,110cyclictest4705-21df23:00:240
312559915014,115cyclictest19475-21apt-config21:15:080
312559915014,111cyclictest22844-21apt21:35:020
312559915012,23cyclictest4169-21modprobe19:40:020
312559915011,99cyclictest268-21snmpd22:25:040
312559915011,99cyclictest24930-21grep21:45:550
312559915011,26cyclictest2385-21grep19:26:010
312559915010,114cyclictest32307-21cstates22:30:230
312559914920,26cyclictest2781-21diskstats19:30:320
312559914915,112cyclictest15717-21latency20:50:430
312559914913,27cyclictest14687-21/usr/sbin/munin00:00:510
312559914913,112cyclictest5874-21/usr/sbin/munin19:50:140
312559914828,19cyclictest8046-21/usr/sbin/munin23:20:120
312559914817,48cyclictest19247-21ls00:26:030
312559914817,106cyclictest8391-21df20:05:280
312559914812,112cyclictest20676-21df_inode21:20:420
312559914811,115cyclictest27214-21apt-get22:00:170
312559914720,28cyclictest28115-21diskstats22:05:330
312559914717,27cyclictest24176-21/usr/sbin/munin21:40:550
312559914717,107cyclictest26056-21munin-run21:55:000
312559914716,23cyclictest14824-21diskstats20:45:340
312559914714,93cyclictest9733-21df23:30:250
312559914713,36cyclictest20399-21diskstats00:35:350
312559914711,39cyclictest4981-21sh19:45:020
312559914615,28cyclictest21781-21/usr/sbin/munin21:25:580
312559914614,37cyclictest11600-21df20:25:260
312559914614,23cyclictest4406-21head22:56:040
312559914613,110cyclictest17173-21sshd21:00:240
31255991459,114cyclictest1502-21df22:40:260
312559914414,103cyclictest299-21sshd20:20:240
312559914412,111cyclictest13871-21apt-get23:55:190
312559914411,110cyclictest16906-21head00:11:040
312559914334,91cyclictest15713-21latency00:05:400
312559914311,105cyclictest8943-21df23:25:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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