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2026-07-18 - 14:41

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 376 highest latencies:
System rack5slot7s.osadl.org (updated Sat Jul 18, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20851224592202,98sleep00-21swapper07:06:230
213019916416,122cyclictest1024-21apt-get08:26:150
213019916218,116cyclictest11224-21apt-get09:25:160
213019916114,25cyclictest27034-21df_inode07:45:300
213019916018,22cyclictest26103-21memory10:56:210
213019916018,116cyclictest4774-21memory12:01:230
213019916015,102cyclictest7841-21apt-get09:05:310
213019916014,123cyclictest30034-21apt-get08:06:180
213019916014,122cyclictest31462-21/usr/sbin/munin11:27:000
213019916011,106cyclictest31813-21sed08:11:190
213019915913,121cyclictest28309-21/usr/sbin/munin11:10:130
213019915829,107cyclictest9421-21cpu12:30:210
213019915716,117cyclictest12019-21apt-get09:30:190
213019915715,117cyclictest27720-21apt-get07:50:190
213019915714,118cyclictest24978-21apt-get07:36:310
213019915619,112cyclictest22573-21munin-run07:20:020
213019915616,115cyclictest15924-21munin-run09:55:010
213019915536,98cyclictest18537-21sh10:10:270
213019915534,21cyclictest7656-21sendmail12:20:000
213019915521,29cyclictest16679-21users09:56:060
213019915413,117cyclictest3419-21grep11:55:020
213019915410,117cyclictest11118-21modprobe09:25:010
213019915321,26cyclictest23008-21ntp_states07:20:510
213019915321,25cyclictest22108-21munin-node07:15:050
213019915310,120cyclictest31959-21apt-get08:15:210
213019915218,26cyclictest10870-21munin-run12:40:030
213019915212,40cyclictest22308-21sed10:31:030
213019915212,26cyclictest27416-21munin-plugin-st11:05:000
213019915137,93cyclictest30612-21sshd11:21:230
213019915117,110cyclictest7675-21apt09:05:010
213019915116,36cyclictest16948-21df10:00:270
213019915116,112cyclictest29821-21munin-run11:20:020
213019915115,113cyclictest2258-21df_inode08:30:380
213019915114,24cyclictest28172-21users11:06:060
213019915113,23cyclictest1006-21munin-run11:40:030
213019915111,26cyclictest31834-21apt-key11:30:200
213019915021,28cyclictest28516-21apt-get07:55:210
213019915020,27cyclictest1920-21apt-get11:45:220
213019915017,93cyclictest4213-21munin-run12:00:010
213019915017,108cyclictest22698-21memory10:35:460
213019915015,112cyclictest4994-21fgrep08:45:550
213019915014,112cyclictest3438-21cut08:35:580
213019915013,112cyclictest24980-21munin-run07:35:030
213019915012,25cyclictest8571-21kworker/u2:1812:25:050
213019915011,30cyclictest13032-21/usr/sbin/munin09:35:400
213019915011,27cyclictest13436-21snmpd07:40:170
21301991499,41cyclictest21282-21zcat10:25:570
21301991498,119cyclictest19515-21tr10:15:490
213019914916,111cyclictest8093-21grep12:20:520
213019914916,108cyclictest10305-21apt09:20:010
213019914915,98cyclictest25108-21memory10:50:460
213019914912,39cyclictest24081-21grep07:26:020
213019914911,99cyclictest18270-21head10:06:010
213019914911,26cyclictest1024-21apt-get08:25:050
21301991489,25cyclictest5431-21wc08:50:250
213019914838,22cyclictest14655-21latency09:45:440
213019914818,105cyclictest1126-21apt-get11:40:190
213019914817,106cyclictest23280-21apt-get10:40:130
213019914816,106cyclictest20061-21/usr/sbin/munin10:20:580
213019914814,112cyclictest5532-21irqstats12:05:450
213019914715,107cyclictest13750-21diskstats09:40:320
213019914624,96cyclictest3770-21apt-get08:40:220
213019914613,26cyclictest6983-1kworker/u3:009:10:190
213019914611,112cyclictest24620-21wc10:46:020
213019914514,26cyclictest6861-21munin-run09:00:030
213019914415,105cyclictest29446-21df_inode08:00:280
213019914315,26cyclictest6258-21df_inode12:10:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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