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2025-12-01 - 16:57

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 50 highest latencies:
System rack5slot7s.osadl.org (updated Mon Dec 01, 2025 12:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15234224322196,96sleep00-21swapper07:08:280
154519916011,124cyclictest31863-21snmpd12:00:110
154519915914,103cyclictest30705-21apt-get08:41:420
154519915814,121cyclictest4915-21apt-get09:21:140
154519915715,25cyclictest20607-21munin-run07:40:020
154519915715,116cyclictest23241-21apt-get07:56:070
154519915613,119cyclictest27479-21modprobe08:20:010
154519915611,118cyclictest17395-21munin-plugin-st07:20:010
154519915515,99cyclictest12388-21apt10:05:010
154519915511,23cyclictest29280-21sendmail_mailqu11:45:570
15451991549,121cyclictest30278-21grep11:51:060
154519915425,19cyclictest0-21swapper09:30:580
154519915417,22cyclictest12388-21apt-get10:06:030
154519915415,116cyclictest4919-21munin-run09:20:060
154519915412,117cyclictest4203-21/usr/sbin/munin12:30:530
154519915339,95cyclictest1789-21latency_hist09:00:060
154519915322,104cyclictest16058-21diskstats10:25:360
154519915314,23cyclictest18244-21munin-run10:40:020
154519915311,119cyclictest22446-21apt07:50:010
154519915229,100cyclictest0-21swapper07:30:550
154519915218,110cyclictest25290-21df_inode08:05:310
154519915214,98cyclictest2523-21cat12:20:460
154519915214,114cyclictest2490-21sshd09:01:500
154519915211,118cyclictest25818-21cat11:25:410
154519915118,109cyclictest8577-21df09:40:250
154519915117,111cyclictest27933-21apt11:40:010
154519915115,43cyclictest8156-21switchtime09:35:590
154519915115,114cyclictest30549-21df_inode11:55:280
154519915113,30cyclictest21212-21cut07:40:570
154519915113,28cyclictest26671-21modprobe08:15:010
154519915113,116cyclictest10363-21grep09:50:480
154519915113,115cyclictest23235-21modprobe07:55:010
154519915112,115cyclictest15823-21/usr/sbin/munin07:10:550
154519915111,116cyclictest23801-21unixbench_singl11:11:020
154519915111,114cyclictest3308-21apt09:10:010
154519915016,21cyclictest0-21swapper07:25:430
154519915014,116cyclictest17440-21munin-run10:35:020
154519915013,99cyclictest32060-21kworker/u2:012:05:050
154519915013,47cyclictest24078-21diskstats11:15:330
154519915012,116cyclictest32760-21apt-get12:11:020
154519915011,28cyclictest26600-21wc11:30:420
154519915011,27cyclictest19740-21ls10:46:020
154519914918,23cyclictest30709-21munin-run08:40:030
154519914915,21cyclictest9383-21df_inode09:45:300
154519914915,112cyclictest24501-21diskstats08:00:380
154519914914,38cyclictest21859-21ntpq11:00:480
154519914914,112cyclictest5355-21munin-run12:40:020
154519914831,23cyclictest6067-21apt-get09:25:170
154519914829,19cyclictest0-21swapper10:40:510
154519914816,109cyclictest15806-21users10:21:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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