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2025-07-15 - 00:38

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 Mon Jul 14, 2025 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22768224422201,97sleep00-21swapper07:06:400
231859916313,123cyclictest5023-21apt-get11:56:570
231859915922,22cyclictest28117-21munin-run07:40:060
231859915916,118cyclictest28113-21apt-get07:41:310
231859915817,115cyclictest32112-21memory08:01:240
231859915816,119cyclictest24412-21users07:15:340
231859915815,119cyclictest18798-21munin-run10:00:020
231859915713,121cyclictest23982-21wc10:30:520
231859915623,29cyclictest24528-21apt-get10:35:240
231859915618,27cyclictest8459-21apt12:15:010
231859915618,114cyclictest30656-21/usr/sbin/munin11:11:360
231859915541,22cyclictest12569-21latency_hist12:40:060
231859915516,113cyclictest11445-21/usr/sbin/munin09:15:360
231859915514,115cyclictest26289-21apt-get07:31:510
231859915430,18cyclictest0-21swapper11:35:410
231859915418,112cyclictest5741-21munin-run08:40:020
231859915415,116cyclictest19813-21df10:05:290
231859915331,23cyclictest25820-21grep07:25:450
231859915326,18cyclictest0-21swapper08:26:360
231859915316,114cyclictest28412-21cron11:00:010
231859915316,113cyclictest31260-21df11:15:350
231859915314,25cyclictest10515-21users09:06:070
231859915312,120cyclictest29469-21fw_packets11:05:370
231859915312,115cyclictest7225-21sort12:05:460
231859915224,21cyclictest0-21swapper10:46:030
231859915214,114cyclictest12347-21apt-get09:20:280
231859915214,112cyclictest15453-21wc09:36:010
231859915211,121cyclictest32322-1kworker/u3:608:05:160
231859915211,115cyclictest2650-21/usr/sbin/munin08:20:510
231859915139,22cyclictest25517-21latency_hist07:25:040
231859915122,26cyclictest11637-21users12:31:080
231859915113,25cyclictest30052-21/usr/sbin/munin07:51:010
231859915113,114cyclictest10656-21awk12:25:570
231859915110,117cyclictest9434-21grep09:00:550
231859915022,26cyclictest2852-21diskstats11:40:340
231859915018,105cyclictest320-21apt-get11:25:190
231859915014,114cyclictest1138-21diskstats08:10:370
231859915013,26cyclictest30842-21kworker/u2:1507:55:060
231859915013,113cyclictest2137-21ntpq08:15:510
231859915012,118cyclictest12900-21kworker/u2:1109:25:200
231859915011,24cyclictest17085-21grep09:46:020
23185991499,117cyclictest21995-21cron10:20:000
231859914920,27cyclictest7559-21diskstats08:50:340
231859914915,110cyclictest5858-21/usr/sbin/munin08:40:160
231859914914,38cyclictest5037-21wc11:55:050
231859914913,22cyclictest6763-21df_inode08:45:320
231859914910,116cyclictest4307-21wc08:30:250
231859914820,100cyclictest8244-21apt-get08:55:220
231859914818,105cyclictest26935-21apt-get10:50:210
231859914814,107cyclictest17300-21/usr/sbin/munin09:50:360
231859914812,28cyclictest28895-21/usr/sbin/munin11:00:540
231859914811,108cyclictest6893-21cat12:05:030
231859914810,114cyclictest16406-21latency_hist09:45:010
231859914735,91cyclictest11428-21latency_hist09:15:050
231859914730,96cyclictest9429-21cpu12:20:220
231859914720,99cyclictest23282-21apt-get07:10:190
231859914717,105cyclictest4192-21users11:46:070
231859914716,107cyclictest20607-21df10:10:280
231859914715,26cyclictest31992-21/usr/sbin/munin11:20:490
231859914714,111cyclictest29855-21sort07:46:130
23185991469,116cyclictest14791-21latency_hist09:35:000
231859914636,87cyclictest19317-21processes10:00:550
231859914634,92cyclictest9259-21modprobe12:20:000
231859914618,106cyclictest1406-21grep11:30:470
231859914616,106cyclictest23028-21df10:25:280
231859914538,86cyclictest25521-21/usr/sbin/munin10:40:380
231859914411,26cyclictest22192-21/usr/sbin/munin10:20:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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