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2026-07-29 - 20:35

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 all highest latencies:
System rack5slot7s.osadl.org (updated Wed Jul 29, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14034224432201,81sleep00-21swapper07:08:240
142569916513,125cyclictest21810-21apt-get07:56:250
142569916145,93cyclictest23579-21unixbench_singl11:17:050
142569915911,121cyclictest22699-21latency_hist11:15:070
142569915818,24cyclictest32712-21munin-run09:00:020
142569915815,24cyclictest9888-21munin-run10:00:030
142569915813,118cyclictest4258-21modprobe12:40:010
142569915717,25cyclictest15063-21munin-node07:15:060
142569915715,101cyclictest13108-21munin-run10:20:030
142569915714,22cyclictest16899-21apt-get10:40:350
142569915612,121cyclictest16735-21awk10:37:170
14256991549,103cyclictest5148-21wc09:30:040
142569915420,31cyclictest6804-21apt-get09:40:210
142569915419,107cyclictest1969-21apt-get09:10:180
142569915416,108cyclictest31895-21sshd08:54:080
142569915414,97cyclictest1048-21munin-run12:20:030
142569915410,118cyclictest21191-21cstates07:50:240
142569915320,105cyclictest26488-21diskstats11:35:350
142569915316,23cyclictest23191-21cat08:00:490
142569915310,119cyclictest15391-21wc10:31:370
142569915222,27cyclictest10978-21irqstats10:05:400
142569915218,26cyclictest17934-21apt-get10:45:260
142569915217,26cyclictest17217-21df07:25:280
142569915215,24cyclictest29270-21apt-get08:41:380
142569915215,111cyclictest28901-21diskstats11:50:350
142569915214,22cyclictest23663-21apt-get11:21:240
142569915213,25cyclictest31516-21ntp_states12:05:500
142569915213,116cyclictest19635-21df_inode07:40:300
142569915212,27cyclictest19517-21/usr/sbin/munin10:55:340
142569915210,26cyclictest16318-21/usr/sbin/munin07:20:220
142569915210,118cyclictest16069-21sort07:16:180
142569915210,116cyclictest2510-21timerandwakeup12:26:030
142569915123,22cyclictest0-21swapper07:30:330
142569915115,24cyclictest1828-21users09:06:080
14256991509,100cyclictest24825-21sort08:10:450
14256991508,119cyclictest13436-21snmpd10:10:340
142569915028,33cyclictest0-21swapper08:26:010
142569915020,25cyclictest27779-21apt-get08:30:220
142569915018,25cyclictest376-21apt-get09:00:190
142569915018,109cyclictest3706-21diskstats09:20:340
142569915017,94cyclictest26237-21users11:31:080
142569915016,20cyclictest7770-21irqstats09:45:410
142569915011,116cyclictest23951-21uname08:05:420
142569915011,116cyclictest20709-21grep11:00:560
142569914916,38cyclictest32237-21memory12:10:450
142569914916,24cyclictest2766-21apt-get09:15:170
142569914914,113cyclictest6092-21diskstats09:35:340
142569914914,109cyclictest26184-21/usr/sbin/munin08:20:460
142569914913,113cyclictest27564-21wc11:40:540
142569914912,114cyclictest30707-21grep12:00:500
142569914911,24cyclictest29596-21wc11:55:220
142569914911,23cyclictest5733-21sort09:31:030
142569914834,94cyclictest13478-21wc10:20:430
142569914816,26cyclictest20322-21/usr/sbin/munin07:45:360
142569914814,115cyclictest18702-21/usr/sbin/munin07:35:130
142569914814,107cyclictest25352-21/usr/sbin/munin08:15:460
142569914812,22cyclictest13436-21snmpd11:45:580
142569914811,19cyclictest1274-21/usr/sbin/munin12:20:280
142569914724,19cyclictest2749-21latency_hist12:30:060
142569914716,25cyclictest10122-21diskstats10:00:330
142569914715,23cyclictest14129-21df10:25:270
142569914715,110cyclictest25029-21memory11:25:540
14256991469,25cyclictest19342-21unixbench_singl10:51:030
142569914612,109cyclictest30886-21sendmail_mailtr08:46:040
142569914611,92cyclictest29369-21grep08:40:090
142569914517,27cyclictest21620-21mailstats11:05:580
142569914514,23cyclictest8629-21memory09:50:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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