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2026-05-25 - 01:49

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 Sun May 24, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20214224632202,99sleep00-21swapper07:06:560
206009916812,130cyclictest28883-21rm08:00:440
206009916417,119cyclictest4586-21diskstats08:50:330
206009916143,23cyclictest29100-21vmstat11:16:060
206009916138,98cyclictest8492-21/usr/sbin/munin12:31:090
206009916117,119cyclictest22488-21apt10:40:020
206009916115,120cyclictest5271-21apt-get08:55:140
206009916024,27cyclictest14899-21apt-get09:55:230
206009916019,115cyclictest3560-21apt12:00:000
206009916015,119cyclictest26336-21ntp_states11:01:340
206009915918,116cyclictest25966-21apt-get07:42:030
206009915917,117cyclictest16584-21apt-get10:05:270
206009915822,29cyclictest24376-21apt-get07:35:210
206009915817,114cyclictest2766-21munin-run08:40:030
206009915732,20cyclictest25695-21munin-plugin-st11:00:010
206009915715,26cyclictest12389-21apt09:40:020
206009915612,109cyclictest22185-1kworker/u3:710:40:180
20600991559,107cyclictest18956-21sed10:16:020
206009915516,25cyclictest9993-21munin-run12:40:030
206009915514,117cyclictest32007-21apt08:20:010
206009915513,41cyclictest13159-21grep09:41:030
206009915436,98cyclictest2454-1kworker/u3:311:51:580
206009915419,107cyclictest7680-21apt-get09:10:190
206009915417,25cyclictest6749-21users09:01:070
206009915417,105cyclictest27814-21apt-get07:55:220
206009915416,115cyclictest24274-21apt07:35:010
206009915415,114cyclictest1741-21latency_hist11:50:050
206009915415,113cyclictest24619-21grep10:50:540
206009915413,115cyclictest4191-21wc08:45:590
206009915337,22cyclictest11564-21vmstat09:31:070
206009915317,111cyclictest26848-21apt-get11:05:130
206009915313,117cyclictest21458-21munin-run10:35:010
206009915313,113cyclictest7697-21/usr/sbin/munin12:25:580
206009915312,41cyclictest9100-21head09:16:030
206009915312,121cyclictest5948-21awk12:11:070
206009915218,106cyclictest3685-21apt-get12:00:180
206009915211,25cyclictest32582-21munin-plugin-st11:40:020
206009915211,25cyclictest20325-21ps10:25:530
206009915137,21cyclictest9808-21/usr/sbin/munin09:20:580
206009915131,27cyclictest30629-21kworker/u2:511:26:400
206009915121,102cyclictest15723-21apt-get10:00:200
206009915119,106cyclictest21997-21sshd07:20:210
206009915118,107cyclictest32330-21kernelversion08:20:420
206009915110,117cyclictest19305-21/usr/sbin/munin10:20:360
206009915015,111cyclictest20697-21apt-get07:10:220
20600991498,40cyclictest31199-21munin-run08:15:010
206009914917,27cyclictest6996-21diskstats09:05:330
206009914912,96cyclictest14759-21users09:51:050
206009914912,28cyclictest27693-21sshd07:52:210
206009914912,113cyclictest26463-21/usr/sbin/munin07:45:490
206009914832,19cyclictest0-21swapper08:05:370
206009914820,22cyclictest28205-21timerandwakeup11:11:000
206009914819,28cyclictest29377-21diskstats11:20:350
206009914817,25cyclictest6786-21munin-run12:20:020
206009914812,112cyclictest21562-21sort07:15:120
206009914811,116cyclictest23427-21sed07:26:050
20600991478,117cyclictest1065-21sort08:26:030
206009914717,24cyclictest18030-21mailstats10:11:050
206009914716,108cyclictest23645-21memory10:45:440
206009914715,25cyclictest31199-21diskstats11:30:380
206009914714,110cyclictest4710-21sort12:05:420
206009914714,109cyclictest427-21kernelversion11:40:390
206009914617,104cyclictest2996-21diskstats08:40:340
206009914610,114cyclictest13739-21fgrep09:45:550
206009914510,111cyclictest7271-21ps12:20:530
206009914417,25cyclictest10206-21df_inode09:25:290
206009914415,25cyclictest1372-21df_inode08:30:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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