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2026-03-22 - 23:44

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 Sun Mar 22, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9130224322191,94sleep00-21swapper07:08:440
93179916216,120cyclictest24899-21apt-get12:02:020
93179916118,119cyclictest26447-21irqstats08:50:470
93179916113,123cyclictest9777-21modprobe10:30:010
93179916014,121cyclictest20060-21apt-get11:30:230
93179915917,23cyclictest12996-21apt-get10:50:320
93179915815,118cyclictest25145-21apt-get08:45:430
93179915814,117cyclictest27565-21cat12:15:040
93179915725,31cyclictest12699-21ntpq07:26:370
93179915717,118cyclictest10125-21munin-node07:15:050
93179915717,116cyclictest18862-21apt-get11:26:320
93179915716,116cyclictest1747-21munin-run09:40:020
93179915713,25cyclictest24727-21ls11:55:580
93179915677,38cyclictest1867-21apt-get09:40:190
93179915514,100cyclictest18864-21/usr/sbin/munin11:25:050
93179915513,116cyclictest27649-21sort08:56:020
9317991539,24cyclictest31674-21grep09:21:010
93179915332,17cyclictest0-21swapper09:25:540
93179915318,107cyclictest15603-21users11:01:040
93179915316,114cyclictest13302-21df07:30:330
93179915314,115cyclictest5697-21grep10:01:010
93179915311,24cyclictest272-21snmpd10:30:110
93179915221,23cyclictest20996-21apt-get11:35:200
93179915220,26cyclictest17446-21diskstats11:15:310
93179915217,24cyclictest11255-21apt07:20:020
93179915216,26cyclictest8290-21apt-get10:20:180
93179915216,114cyclictest14104-21diskstats07:35:300
93179915213,23cyclictest19725-21diskstats08:10:330
93179915122,28cyclictest11504-21apt-get10:40:200
93179915118,105cyclictest30060-21apt-get12:30:200
93179915117,24cyclictest2770-21diskstats09:45:310
93179915111,115cyclictest28894-21sendmail_mailqu12:20:540
93179915019,23cyclictest31023-21irqstats12:35:390
93179915016,35cyclictest12073-21munin-run07:25:010
93179915016,110cyclictest3456-21apt09:50:110
93179915013,25cyclictest26743-21latency_hist12:10:000
93179915012,22cyclictest272-21snmpd07:52:220
93179915011,114cyclictest17011-21cat11:10:590
93179915010,27cyclictest22732-21apt08:30:010
93179915010,117cyclictest17902-21sendmail08:00:020
93179914929,24cyclictest7173-21switchtime10:10:590
93179914915,38cyclictest21816-21apt11:40:100
93179914914,111cyclictest30520-21memory09:15:420
93179914912,26cyclictest25152-21http08:45:060
93179914912,26cyclictest20689-21/usr/sbin/munin08:15:470
93179914911,116cyclictest12295-21/usr/sbin/munin10:45:540
93179914911,115cyclictest30022-21grep09:11:000
93179914910,23cyclictest18330-21grep08:00:490
93179914832,22cyclictest272-21snmpd09:06:000
93179914829,99cyclictest21722-21basename08:20:580
93179914820,101cyclictest5868-21apt-get10:05:200
93179914817,22cyclictest14128-21apt-get10:55:110
93179914815,24cyclictest27953-21ntp_states12:15:510
93179914815,108cyclictest15743-21apt-get11:05:190
93179914815,105cyclictest14816-21/usr/sbin/munin07:40:340
9317991478,115cyclictest29554-21ntp_kernel_pll_12:25:480
93179914724,26cyclictest111-21systemd-journal08:35:010
93179914715,35cyclictest272-21snmpd09:30:580
93179914711,113cyclictest23873-21awk11:50:580
93179914711,111cyclictest23369-21latency_hist11:50:040
93179914631,18cyclictest0-21swapper08:05:380
93179914619,23cyclictest15713-21df07:45:290
93179914611,43cyclictest11229-21ls10:36:010
93179914611,24cyclictest7900-21tr10:15:560
93179914419,25cyclictest28585-21apt09:05:000
93179914419,100cyclictest23726-21df08:35:260
93179914315,89cyclictest4953-21munin-run10:00:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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