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2025-11-20 - 19:46

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 792 highest latencies:
System rack5slot7s.osadl.org (updated Thu Nov 20, 2025 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12231224222195,85sleep00-21swapper07:07:360
125489916517,122cyclictest10043-21df_inode10:10:310
125489916135,20cyclictest22893-21unixbench_singl11:26:070
125489916110,126cyclictest29193-21apt-get08:51:590
125489916017,26cyclictest28110-21apt-get12:00:170
125489915720,97cyclictest26155-21apt-get11:50:350
125489915720,23cyclictest21620-21irqstats11:20:390
125489915715,25cyclictest933-21awk12:30:570
125489915711,122cyclictest21150-21munin-run08:00:030
125489915619,114cyclictest9797-21users10:06:040
125489915615,118cyclictest13567-21irqstats10:30:390
125489915540,94cyclictest19355-21latency_hist07:50:030
125489915515,25cyclictest30436-21diskstats08:55:400
125489915515,100cyclictest12814-21irqstats07:10:380
125489915344,22cyclictest17298-21/usr/sbin/munin07:35:480
125489915320,23cyclictest20721-21df_inode11:15:280
125489915317,22cyclictest5008-21munin-run09:40:030
125489915316,25cyclictest29874-21irqstats12:10:400
125489915316,113cyclictest1791-21munin-run09:20:030
125489915312,23cyclictest1888-21sed12:36:030
125489915217,113cyclictest11447-21apt-get10:21:280
125489915215,113cyclictest25980-21apt08:30:000
125489915215,111cyclictest25636-21irqstats11:45:420
125489915213,112cyclictest24761-21df11:40:250
12548991519,120cyclictest31976-21grep12:21:020
125489915137,22cyclictest16446-21memory07:30:440
125489915120,27cyclictest16053-21memory10:45:430
125489915114,99cyclictest8773-21find10:00:550
125489915114,114cyclictest27338-21sshd08:36:000
125489915114,113cyclictest28670-21irqstats08:45:370
125489915035,95cyclictest21976-21latency_hist08:05:040
125489915032,23cyclictest0-21swapper11:56:050
125489915020,43cyclictest6724-21apt09:50:130
125489915020,103cyclictest16608-21apt-get10:50:210
125489915017,110cyclictest11451-21munin-run10:20:030
125489915013,113cyclictest23508-21sed08:11:030
125489915013,112cyclictest14817-21head10:36:040
12548991499,116cyclictest24417-21wc08:20:050
12548991498,120cyclictest5755-21grep09:41:040
125489914919,28cyclictest30498-21apt-get12:15:210
125489914913,114cyclictest3128-21grep09:25:540
125489914911,116cyclictest7946-21find09:55:550
125489914832,94cyclictest18522-21ntp_kernel_pll_11:00:500
125489914830,22cyclictest0-21swapper11:35:130
125489914816,109cyclictest15514-21df_inode07:25:280
125489914816,108cyclictest17933-21df_inode07:40:300
125489914815,24cyclictest23040-21/usr/sbin/munin11:30:140
125489914815,106cyclictest29599-21latency_hist12:10:040
125489914812,113cyclictest31863-21snmpd08:45:030
125489914812,111cyclictest32653-21ls09:10:030
125489914810,116cyclictest26234-21cat08:30:350
125489914732,22cyclictest20508-21modprobe11:15:010
125489914718,41cyclictest15187-21irqstats10:40:390
125489914718,26cyclictest13893-21diskstats07:15:490
125489914716,26cyclictest32738-21/usr/sbin/munin09:10:390
125489914617,24cyclictest18108-21munin-run11:00:020
125489914617,23cyclictest24659-21irqstats08:20:410
125489914616,44cyclictest19136-21diskstats11:05:290
125489914615,25cyclictest22235-21irqstats08:05:400
125489914613,23cyclictest3935-21fgrep09:30:560
125489914612,112cyclictest6345-21zcat09:45:590
125489914611,113cyclictest15141-21grep07:20:590
125489914514,107cyclictest1908-21/usr/sbin/munin09:21:070
125489914511,109cyclictest31493-21/usr/sbin/munin09:00:520
125489914417,25cyclictest20077-21users07:51:040
125489914413,23cyclictest12840-21memory10:25:490
125489914311,22cyclictest32647-21/usr/sbin/munin12:25:570
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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