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2026-07-14 - 16:17

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 792 highest latencies:
System rack5slot7s.osadl.org (updated Tue Jul 14, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17344224432211,88sleep00-21swapper07:09:210
174629916513,125cyclictest11268-21mailstats09:45:550
174629916137,22cyclictest1928-21kernelversion08:50:420
174629916015,100cyclictest19525-21apt07:20:130
174629915832,24cyclictest14019-1kworker/u3:310:50:170
174629915815,24cyclictest32258-21apt-get11:56:280
174629915715,120cyclictest18734-21munin-run10:35:010
174629915640,23cyclictest20349-21apt-get10:46:560
174629915619,25cyclictest10015-21apt-get09:40:160
174629915616,98cyclictest9017-21apt-get09:35:240
174629915615,115cyclictest6439-21cron09:20:020
174629915614,119cyclictest18932-21df10:35:260
174629915612,120cyclictest30361-21irqstats08:25:490
174629915612,120cyclictest26415-21apt-get11:21:070
174629915610,102cyclictest18364-21munin-node10:25:110
174629915539,22cyclictest3085-21threads12:11:010
174629915517,37cyclictest24583-21apt-get11:10:570
174629915516,115cyclictest29035-21apt-get08:21:410
174629915416,113cyclictest3448-21df09:00:260
174629915413,115cyclictest1035-21ls12:00:310
174629915411,117cyclictest18654-21grep07:15:270
17462991538,122cyclictest3642-21ntpq12:15:490
174629915336,23cyclictest8265-21df_inode09:30:310
174629915325,21cyclictest30872-21sshd11:45:260
174629915316,23cyclictest6458-21apt12:35:000
174629915315,22cyclictest2621-21df08:55:250
174629915314,23cyclictest32478-21munin-run08:40:010
174629915314,22cyclictest11701-21df09:50:260
174629915218,25cyclictest22274-21apt-get10:55:140
174629915218,23cyclictest27676-21diskstats11:25:390
174629915218,108cyclictest32258-21apt11:55:020
174629915213,27cyclictest27071-21/usr/sbin/munin08:05:520
174629915210,115cyclictest26151-21grep08:00:400
174629915122,26cyclictest20976-21users07:26:070
174629915119,107cyclictest1863-21diskstats12:05:300
174629915117,22cyclictest15707-21df10:15:270
174629915115,112cyclictest23438-21latency_hist07:45:040
174629915115,109cyclictest23829-21ntpq07:45:510
174629915114,28cyclictest4239-21expr09:05:250
174629915114,111cyclictest22588-21sshd07:37:250
174629915112,37cyclictest16951-21grep10:20:590
174629915112,115cyclictest564-21find08:40:570
17462991508,119cyclictest29155-21apt-get11:35:140
174629915021,28cyclictest31221-21memory08:30:450
174629915019,111cyclictest5575-21grep09:11:020
174629915017,111cyclictest26420-21munin-run11:20:020
174629915017,109cyclictest4830-21users12:21:060
174629915013,25cyclictest25211-21cat07:55:230
174629915011,97cyclictest14013-21/usr/sbin/munin10:05:460
174629915010,24cyclictest278-21lldpd07:30:350
174629914934,95cyclictest12683-21grep09:55:490
174629914919,102cyclictest13222-21apt-get10:00:160
174629914916,38cyclictest6664-21df09:20:250
174629914916,20cyclictest28327-21apt-get08:15:200
174629914910,115cyclictest20276-21unixbench_singl10:41:020
174629914820,29cyclictest23094-21apt-get11:00:200
174629914814,107cyclictest6557-21/usr/sbin/munin12:35:110
174629914813,28cyclictest18364-21munin-node11:05:100
174629914813,26cyclictest30191-21latency11:40:420
174629914810,113cyclictest15402-21grep10:11:010
174629914728,22cyclictest7155-21snmpd12:25:380
174629914720,100cyclictest27643-21diskstats08:10:340
174629914716,25cyclictest24321-21/usr/sbin/munin07:50:570
174629914714,22cyclictest1047-21diskstats08:45:320
174629914714,112cyclictest18270-21munin-node07:15:080
174629914625,22cyclictest0-21swapper11:30:220
174629914612,113cyclictest7853-21cut09:26:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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