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2025-12-05 - 08:10

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 Fri Dec 05, 2025 00:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23590224332189,96sleep00-21swapper19:06:460
240019916211,126cyclictest8756-21apt-get20:56:270
240019916015,119cyclictest7027-21apt-get00:01:160
240019915915,120cyclictest29598-21df23:00:270
240019915816,24cyclictest7031-21munin-run00:00:020
240019915735,22cyclictest651-21sshd23:20:280
240019915710,25cyclictest6987-21grep20:41:010
240019915627,22cyclictest0-21swapper21:25:010
240019915615,120cyclictest16449-21df_inode21:40:280
240019915612,122cyclictest11392-21kworker/u2:1621:10:010
240019915514,117cyclictest11516-21diskstats00:25:360
240019915426,21cyclictest9775-21dpkg00:15:150
240019915414,117cyclictest24973-21users19:15:200
240019915413,115cyclictest28753-21sort19:40:050
240019915320,106cyclictest18740-21apt-get21:55:210
240019915318,27cyclictest18054-21diskstats21:50:320
240019915316,114cyclictest19587-21apt-get22:00:240
240019915316,113cyclictest3511-21apt-get20:25:310
240019915311,25cyclictest32693-21cat23:16:030
240019915311,116cyclictest5454-21grep23:50:040
240019915242,22cyclictest299-21sshd23:05:270
240019915220,26cyclictest22294-21diskstats22:15:320
240019915219,24cyclictest27076-21apt-get22:45:210
240019915218,20cyclictest3232-21grep20:20:570
240019915216,95cyclictest16222-21munin-run21:40:030
240019915216,112cyclictest11604-21df_inode21:10:280
240019915214,26cyclictest31126-21apt19:55:010
240019915213,114cyclictest4037-21df23:40:280
240019915117,110cyclictest23989-21irqstats22:25:410
240019915115,24cyclictest29370-21apt23:00:020
240019915113,24cyclictest13000-21modprobe21:20:010
240019915111,97cyclictest32014-21apt23:15:000
240019915111,39cyclictest1524-21sshd23:25:180
240019915111,117cyclictest29584-21sort19:45:050
240019915110,117cyclictest2159-21/usr/sbin/munin20:15:410
240019915035,15cyclictest0-21swapper22:51:000
240019915030,21cyclictest0-21swapper21:46:060
240019915018,106cyclictest1426-21memory20:10:460
240019915016,107cyclictest12999-21apt-get00:35:210
240019915014,96cyclictest3810-21apt23:40:010
240019915014,25cyclictest7841-21sort20:46:020
240019915014,24cyclictest25270-21users22:31:100
240019915011,27cyclictest8205-21if_eth020:50:400
240019915011,120cyclictest3515-1kworker/u3:020:30:280
240019915011,117cyclictest6217-21modprobe23:55:010
240019915010,24cyclictest23643-21sed22:21:060
240019914974,52cyclictest14722-21/usr/sbin/munin21:30:170
240019914915,109cyclictest8296-21diskstats00:05:430
240019914912,27cyclictest31863-21snmpd19:21:340
240019914912,114cyclictest12429-21ls00:30:430
240019914911,98cyclictest22083-21sshd22:15:020
240019914819,28cyclictest25524-21diskstats22:35:360
240019914816,25cyclictest24812-21munin-node19:15:060
240019914816,21cyclictest26524-21df19:25:270
240019914814,23cyclictest9148-21irqstats00:10:410
240019914814,111cyclictest31713-21cut19:56:020
240019914813,23cyclictest27798-21sort19:31:010
240019914811,25cyclictest6354-21sendmail20:40:030
240019914719,27cyclictest14040-21diskstats21:25:350
240019914718,27cyclictest10018-21df_inode21:00:430
240019914627,97cyclictest32689-21grep20:01:080
240019914613,25cyclictest26230-21/usr/sbin/munin22:40:560
240019914613,111cyclictest10717-21diskstats00:20:320
240019914610,25cyclictest30144-21grep19:46:000
240019914610,22cyclictest21010-21grep22:06:050
240019914519,28cyclictest2315-21apt-get23:30:210
240019914416,103cyclictest501-21diskstats20:05:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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