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2026-06-10 - 00:37

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 Tue Jun 09, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10318224512201,91sleep00-21swapper07:06:180
107789916615,25cyclictest20138-21munin-run11:25:040
107789916213,124cyclictest3657-21snmpd08:26:290
107789916017,119cyclictest9680-21apt10:20:020
107789915915,119cyclictest21275-21apt-get08:15:250
107789915814,122cyclictest24363-21apt-get11:50:330
107789915814,119cyclictest30147-21grep12:21:040
107789915740,24cyclictest947-21latency09:25:430
107789915721,29cyclictest14789-21apt-get07:35:210
107789915716,25cyclictest27988-21apt-get08:56:110
107789915617,110cyclictest19613-21apt-get08:05:210
107789915523,29cyclictest20548-21diskstats11:26:010
107789915518,25cyclictest15713-21df_inode07:40:300
107789915518,106cyclictest13992-21apt-get07:30:170
107789915515,116cyclictest26339-21apt-get08:45:250
107789915513,121cyclictest32623-21munin-plugin-st12:40:010
107789915512,44cyclictest23177-21tr11:40:460
107789915512,120cyclictest22911-21grep08:21:100
107789915511,122cyclictest27311-21cpu08:50:280
107789915511,104cyclictest26625-21grep12:00:500
107789915415,28cyclictest3148-21apt-get09:40:210
107789915414,24cyclictest14702-21df10:50:250
107789915414,117cyclictest3657-21snmpd12:09:280
107789915413,117cyclictest5297-21grep09:51:010
107789915411,26cyclictest25350-21sendmail08:40:010
107789915315,116cyclictest22755-21munin-plugin-st11:40:010
107789915315,115cyclictest25494-21apt-get11:55:290
107789915314,117cyclictest11746-21df07:15:190
107789915314,115cyclictest16654-21/usr/sbin/munin11:00:560
107789915311,26cyclictest12190-21/usr/sbin/munin10:35:130
107789915223,108cyclictest29336-21unixbench_singl12:16:030
107789915218,27cyclictest23965-21diskstats08:30:350
107789915215,23cyclictest31233-21diskstats12:30:290
107789915213,115cyclictest25763-21grep08:40:480
107789915210,41cyclictest8654-21wc10:15:050
10778991519,26cyclictest12400-21/usr/sbin/munin07:20:110
107789915117,24cyclictest17926-21diskstats11:10:330
107789915116,112cyclictest17303-21df_inode07:50:280
107789915115,22cyclictest6235-21munin-run10:00:020
107789915113,114cyclictest10875-21apt-get07:10:180
107789915112,117cyclictest28205-21awk12:10:510
107789915111,27cyclictest17742-21grep11:10:040
107789915031,20cyclictest0-21swapper08:00:220
107789915017,25cyclictest3657-21snmpd07:26:500
107789915015,23cyclictest18309-21ntp_states07:55:510
107789915013,24cyclictest10703-21df_inode10:25:290
107789915012,115cyclictest20830-21fgrep08:10:530
107789914927,21cyclictest0-21swapper10:30:110
107789914915,23cyclictest31677-21diskstats09:15:340
107789914912,26cyclictest16691-21grep07:45:470
107789914912,25cyclictest517-21wc09:21:010
107789914842,85cyclictest30401-21cstates12:25:240
107789914820,103cyclictest29978-21apt-get09:05:180
107789914820,100cyclictest23671-21apt-get11:45:200
107789914816,108cyclictest29210-21cstates09:00:290
107789914815,28cyclictest30768-21/usr/sbin/munin09:10:360
107789914813,26cyclictest1529-21/usr/sbin/munin09:30:360
107789914813,25cyclictest12784-21systemd-journal11:35:010
107789914812,111cyclictest2332-21grep09:35:210
107789914718,27cyclictest13119-21df_inode10:40:300
107789914716,105cyclictest6355-21apt-get10:00:200
107789914712,110cyclictest13916-21/usr/sbin/munin10:45:280
107789914711,114cyclictest19322-21munin-run11:20:020
107789914710,117cyclictest3657-21snmpd10:05:520
107789914619,27cyclictest16055-21users10:56:050
107789914515,23cyclictest9908-21df_inode10:20:370
107789914210,26cyclictest4227-21ntp_kernel_err09:45:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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