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2026-06-15 - 04:16

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 Jun 15, 2026 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17622224242184,97sleep00-21swapper19:07:300
179479916017,116cyclictest17950-21apt-get22:25:160
179479916016,120cyclictest4731-21munin-run00:20:020
179479915916,22cyclictest32144-21df_inode23:50:340
179479915816,117cyclictest1075-21apt00:00:010
179479915815,118cyclictest4759-21apt-get21:06:370
179479915720,26cyclictest18745-21apt-get22:30:180
179479915713,101cyclictest31086-21apt-get23:45:260
179479915710,66cyclictest25044-21kworker/u2:221:10:200
179479915615,118cyclictest22296-21apt-get19:36:310
179479915615,116cyclictest2921-21apt-get00:11:300
179479915530,106cyclictest12532-21cat21:50:420
179479915521,106cyclictest25947-21diskstats19:55:340
179479915518,110cyclictest11831-21ntp_states21:45:520
179479915517,22cyclictest6793-21diskstats21:15:350
179479915516,25cyclictest26897-21munin-run23:20:010
179479915515,118cyclictest17032-21munin-run22:20:020
179479915511,23cyclictest16177-21users22:11:060
179479915417,95cyclictest22259-21users19:31:080
179479915414,116cyclictest2060-21apt-get00:05:270
179479915413,39cyclictest30019-21unixbench_singl23:36:050
179479915317,24cyclictest18739-21munin-run19:15:020
179479915317,23cyclictest24902-21users19:46:050
179479915317,114cyclictest19888-21munin-run19:20:020
179479915315,94cyclictest29043-21/usr/sbin/munin20:15:390
179479915313,28cyclictest25356-21ntp_states19:50:500
179479915313,118cyclictest659-21apt-get20:40:250
179479915312,117cyclictest26736-21cstates20:00:250
179479915215,23cyclictest8739-21snmpd23:45:060
179479915213,23cyclictest25057-21apt-get23:10:360
179479915212,100cyclictest20975-21irqstats19:25:350
179479915115,97cyclictest7344-21df_inode00:35:290
179479915114,23cyclictest20243-21munin-run22:40:020
179479915110,117cyclictest27309-21ntpq23:20:470
179479915110,115cyclictest28687-21awk20:10:550
179479915038,91cyclictest4959-21diskstats00:20:340
179479915015,25cyclictest17464-21ntp_states22:20:510
179479915014,25cyclictest25059-21/usr/sbin/munin23:10:050
179479915011,119cyclictest8739-21snmpd22:09:260
179479914921,26cyclictest23453-21apt-get19:40:270
179479914921,25cyclictest32165-21munin-run20:35:020
179479914919,30cyclictest32504-21memory20:35:460
179479914916,23cyclictest3428-21uname20:55:410
179479914913,111cyclictest13535-21wc21:55:550
179479914913,109cyclictest1547-21/usr/sbin/munin00:00:540
179479914912,99cyclictest23343-21sort22:56:030
179479914911,115cyclictest10975-21ls21:40:460
17947991489,114cyclictest6623-21uname00:30:400
17947991489,100cyclictest27808-21/usr/sbin/munin23:25:550
179479914811,26cyclictest20186-21grep19:20:400
179479914733,74cyclictest10603-21munin-run21:40:030
179479914720,100cyclictest14042-21diskstats22:00:330
179479914719,27cyclictest30785-21diskstats20:25:340
179479914718,25cyclictest5642-21/usr/sbin/munin00:26:090
179479914713,23cyclictest22266-21ntp_states22:50:490
179479914671,49cyclictest29295-21sh23:35:000
179479914624,25cyclictest26664-1kworker/u3:420:45:140
179479914616,92cyclictest2548-21df20:50:260
179479914615,23cyclictest20363-21apt-get22:40:170
179479914615,105cyclictest9396-21ntpq21:30:490
179479914612,110cyclictest30488-21/usr/sbin/munin20:21:030
179479914611,100cyclictest8211-21munin-run21:25:010
179479914529,93cyclictest8734-21fgrep21:25:560
179479914515,27cyclictest27453-21/usr/sbin/munin20:06:110
179479914512,24cyclictest4656-21cat21:01:010
179479914412,35cyclictest21850-21sh22:50:010
179479914316,24cyclictest23888-21ntp_states23:00:500
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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