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2026-04-14 - 20:39

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 Tue Apr 14, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30075224342203,87sleep00-21swapper07:07:380
303879916516,126cyclictest8109-21ntp_states08:11:010
303879916318,102cyclictest24948-21apt-get09:55:260
303879916118,25cyclictest13773-21apt-get12:05:180
303879916014,123cyclictest3418-21users07:41:050
303879915911,125cyclictest7657-21sshd08:07:060
303879915911,124cyclictest10840-21head08:26:030
303879915716,117cyclictest12857-21munin-run12:00:010
303879915715,26cyclictest7785-21users11:26:080
303879915715,116cyclictest31781-21/usr/sbin/munin07:20:530
303879915714,120cyclictest18087-21apt-get12:30:250
303879915615,25cyclictest30484-21/usr/sbin/munin07:10:110
303879915615,117cyclictest11028-21apt11:50:010
303879915613,121cyclictest15897-21users08:56:080
303879915610,102cyclictest31740-21latency_hist07:20:070
303879915519,27cyclictest19400-21diskstats09:20:360
303879915517,37cyclictest12691-21users08:37:080
303879915516,97cyclictest10073-21users08:21:070
303879915511,40cyclictest18882-21fgrep09:15:570
303879915511,29cyclictest2112-21sed10:51:010
303879915415,26cyclictest32477-21apt-get07:25:440
303879915413,37cyclictest16804-21cat09:05:040
303879915319,108cyclictest12859-21apt-get08:40:240
303879915319,107cyclictest4708-21apt-get11:10:180
303879915318,24cyclictest6437-21df11:20:290
30387991529,121cyclictest5006-21users07:51:060
303879915218,111cyclictest10198-21users11:41:070
303879915217,22cyclictest15881-21ntp_states12:16:350
303879915214,115cyclictest272-21snmpd11:35:010
303879915212,26cyclictest24805-21gpgv09:55:060
303879915211,24cyclictest28740-21fgrep10:15:550
303879915210,115cyclictest30744-21/usr/sbin/munin10:30:480
303879915116,112cyclictest9241-21users08:16:070
303879915113,25cyclictest17033-21irqstats09:05:390
303879915112,26cyclictest22375-21munin-run09:40:030
30387991509,121cyclictest16864-1kworker/u3:109:30:120
303879915017,23cyclictest13888-21memory08:45:440
303879915016,111cyclictest5848-21munin-run08:00:030
303879915016,110cyclictest11662-21users08:31:070
303879915014,23cyclictest2642-21munin-run07:40:020
303879915014,116cyclictest3618-21cpuspeed07:45:210
303879915013,116cyclictest15220-21users12:11:050
303879915012,24cyclictest27585-21cstates10:10:230
303879915012,23cyclictest17911-21munin-run12:30:020
303879915011,39cyclictest2784-21cut10:55:590
303879915011,27cyclictest13589-21grep12:01:090
303879915011,25cyclictest6579-21grep08:01:040
303879915010,115cyclictest30642-21apt10:30:000
30387991498,118cyclictest9133-21zcat11:36:000
303879914917,109cyclictest11826-21munin-run11:55:070
303879914916,36cyclictest23982-21apt09:50:020
303879914912,39cyclictest17110-21modprobe12:25:010
303879914910,28cyclictest22601-21df_inode09:40:300
303879914910,116cyclictest5924-21find11:15:560
303879914820,27cyclictest19148-21diskstats12:35:410
303879914818,27cyclictest20195-21diskstats09:25:340
303879914815,106cyclictest1457-21ntpq07:30:570
303879914814,26cyclictest25934-21/usr/sbin/munin10:00:550
303879914813,112cyclictest3910-21/usr/sbin/munin11:05:220
303879914723,15cyclictest0-21swapper10:05:400
303879914716,36cyclictest0-21swapper09:10:480
303879914714,108cyclictest876-21irqstats10:45:390
303879914631,19cyclictest0-21swapper11:00:550
303879914631,19cyclictest0-21swapper08:50:370
303879914618,101cyclictest31783-21memory10:35:460
303879914611,113cyclictest29148-21/usr/sbin/munin10:20:200
303879914520,100cyclictest566-21users10:41:050
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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