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2025-11-21 - 04:29

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 Nov 21, 2025 00:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4823224442197,97sleep00-21swapper19:06:390
52489917016,126cyclictest18526-21apt-get20:25:290
52489916415,42cyclictest11447-21apt-get19:46:270
52489915912,120cyclictest14262-21/usr/sbin/munin20:01:550
52489915838,98cyclictest27756-21apt-get21:20:160
52489915814,28cyclictest4826-21sh22:20:010
5248991579,25cyclictest10893-21apt-get22:56:520
52489915740,24cyclictest15332-21df_inode20:05:360
52489915715,30cyclictest13001-21uname23:05:440
52489915618,24cyclictest1602-21/usr/sbin/munin22:00:040
52489915616,118cyclictest10293-21sshd22:50:550
52489915515,117cyclictest27629-21apt21:20:020
52489915510,26cyclictest7925-21head19:21:010
52489915414,117cyclictest15834-21apt-get23:21:560
52489915411,119cyclictest23109-21/usr/sbin/munin20:50:420
52489915319,111cyclictest0-21swapper22:05:030
52489915318,23cyclictest24186-21apt-get00:15:340
52489915316,114cyclictest10634-21munin-run19:40:020
52489915315,97cyclictest6589-21diskstats19:15:480
52489915314,115cyclictest14080-21munin-run20:00:040
52489915229,23cyclictest0-21swapper21:05:500
52489915217,37cyclictest7801-21cut22:35:570
52489915217,110cyclictest25630-21sshd00:20:550
52489915215,114cyclictest11407-21users19:41:000
52489915212,43cyclictest14970-21timerandwakeup23:16:010
52489915212,26cyclictest21657-1kworker/u3:420:41:540
52489915212,114cyclictest9567-21processes22:46:550
52489915211,118cyclictest21096-21latency_hist20:40:090
52489915117,113cyclictest8803-21apt-get19:30:340
52489915115,47cyclictest16376-21df_inode23:25:350
52489915114,36cyclictest2760-21memory22:05:450
52489915113,25cyclictest16930-21diskstats20:15:350
52489915113,21cyclictest30002-21users21:31:110
52489915112,115cyclictest26832-21modprobe00:30:010
52489915111,24cyclictest24203-21gpgv00:15:060
5248991509,25cyclictest28963-21zcat21:25:570
52489915018,23cyclictest19595-21diskstats23:45:320
52489915015,115cyclictest8866-21munin-run22:45:040
52489915014,112cyclictest17762-21munin-run23:35:010
52489915011,25cyclictest18299-21sed20:21:070
52489914931,23cyclictest30234-21cstates21:35:250
52489914926,22cyclictest0-21swapper21:10:400
52489914922,27cyclictest13723-21diskstats23:10:340
52489914916,22cyclictest12299-21sshd23:00:530
52489914914,24cyclictest6222-21systemctl22:26:000
52489914913,112cyclictest8803-21apt19:30:020
52489914912,27cyclictest12928-21/usr/sbin/munin19:51:020
52489914912,25cyclictest20924-21grep23:51:050
52489914912,24cyclictest3616-21ntpq22:10:530
5248991488,118cyclictest16534-21sort20:11:030
52489914817,20cyclictest0-21swapper22:30:580
52489914813,26cyclictest31495-21sort21:40:590
52489914811,23cyclictest18389-21wc23:36:030
52489914811,114cyclictest24009-21tr20:55:550
52489914810,22cyclictest27009-21wc00:30:230
52489914717,109cyclictest0-21swapper21:50:550
52489914715,24cyclictest21392-21ntp_states23:55:540
52489914711,25cyclictest6037-21apt19:15:000
52489914711,114cyclictest28359-21head00:36:040
52489914620,106cyclictest19474-21apt-get20:30:220
52489914614,25cyclictest18858-21irqstats23:40:390
52489914614,108cyclictest32359-21sort21:46:030
52489914612,109cyclictest22225-21diskstats20:45:400
52489914611,111cyclictest25126-21sort21:01:010
52489914610,115cyclictest21976-21wc00:00:230
52489914530,22cyclictest0-21swapper00:05:290
52489914511,108cyclictest5505-21sort22:21:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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