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2026-05-14 - 00:48

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 Wed May 13, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19708224342198,89sleep00-21swapper07:06:400
201309916717,127cyclictest24577-21apt-get07:35:130
201309916518,123cyclictest25639-21memory07:40:430
201309916117,119cyclictest9348-21apt-get09:21:020
201309916015,122cyclictest3496-21munin-run12:00:040
201309915916,118cyclictest27654-21apt-get11:10:280
201309915738,96cyclictest7407-21proc_pri09:05:500
201309915731,30cyclictest0-21swapper09:16:050
201309915718,110cyclictest5208-21apt-get12:10:170
201309915713,120cyclictest27059-21apt-get07:50:170
201309915630,22cyclictest20362-21sshd07:10:440
201309915616,23cyclictest32515-21apt-get11:41:080
201309915612,21cyclictest4300-21apt-get08:51:350
201309915610,121cyclictest28275-21/usr/sbin/munin07:55:520
201309915610,120cyclictest8107-21grep09:10:460
201309915516,24cyclictest26222-21memory11:00:450
201309915515,28cyclictest7328-21/usr/sbin/munin12:20:580
201309915514,26cyclictest30330-21apt08:10:010
201309915510,120cyclictest5034-21head12:06:020
201309915417,113cyclictest25863-21munin-run11:00:020
201309915413,27cyclictest16277-21latency_hist10:00:050
201309915315,26cyclictest28950-21diskstats08:00:340
201309915315,116cyclictest26889-21munin-run07:50:020
201309915314,40cyclictest5599-21irqstats08:55:450
201309915313,116cyclictest32519-21munin-run11:40:020
201309915310,29cyclictest9888-21vmstat12:36:070
201309915240,93cyclictest2502-21/usr/sbin/munin11:50:570
201309915222,24cyclictest29307-21apt11:20:010
201309915216,113cyclictest18175-21memory10:10:440
201309915216,110cyclictest2815-21apt-get08:40:170
201309915215,115cyclictest27018-21memory11:05:440
201309915213,116cyclictest6551-21grep09:00:490
201309915119,106cyclictest14530-21apt-get09:50:280
201309915118,29cyclictest21955-21apt-get10:35:160
201309915118,23cyclictest20602-21memory10:25:430
201309915118,106cyclictest12087-21apt-get09:35:190
201309915117,37cyclictest21459-21df07:15:450
201309915117,26cyclictest639-21memory08:25:420
201309915113,114cyclictest30464-21memory11:25:430
201309915112,23cyclictest20042-21snmpd08:15:360
201309915023,102cyclictest10868-21wc09:25:590
201309915021,101cyclictest21159-21apt-get10:30:200
201309915019,104cyclictest22886-21diskstats10:40:330
201309915015,112cyclictest31060-21grep08:11:030
201309915014,99cyclictest11401-21diskstats09:30:330
201309915014,21cyclictest4302-21/usr/sbin/munin08:50:050
201309915013,97cyclictest8839-21zcat12:30:540
201309915011,41cyclictest23249-21missed_timers07:25:460
201309915011,29cyclictest23568-21/usr/sbin/munin10:45:110
201309915011,114cyclictest31147-21/usr/sbin/munin11:30:360
201309914933,21cyclictest1361-21/usr/sbin/munin11:45:430
201309914932,92cyclictest23778-21/usr/sbin/munin07:30:120
201309914929,98cyclictest0-21swapper09:40:520
201309914919,23cyclictest32063-21apt-get08:20:190
201309914919,100cyclictest24366-21apt-get10:50:150
201309914915,107cyclictest1515-21ntp_states08:30:530
201309914914,111cyclictest17382-21memory10:05:440
201309914817,103cyclictest2232-21memory08:35:430
201309914816,106cyclictest22189-21/usr/sbin/munin07:20:520
201309914816,106cyclictest18838-21df_inode10:15:280
201309914812,25cyclictest29869-21cat11:20:560
201309914812,114cyclictest4312-21munin-run12:05:000
201309914720,27cyclictest14362-21users09:46:070
201309914711,24cyclictest20042-21snmpd10:20:400
201309914623,24cyclictest17047-21latency_hist10:05:030
201309914613,107cyclictest7739-21/usr/sbin/munin12:25:290
201309914512,108cyclictest6198-21cut12:15:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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