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2026-06-24 - 10:53

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #f, slot #4

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: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of all highest latencies:
System rackfslot4s.osadl.org (updated Wed Jun 24, 2026 00:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1577921230,3chrt15780-21runrttasks21:33:220
560221210,2chrt5603-21runrttasks23:44:270
2386321200,2chrt23853-21ntpq00:11:180
1090221200,2chrt10896-21diskstats20:35:330
715521170,3chrt7156-21ssh21:20:420
344521160,2sleep03444-21seq20:23:390
2708421160,2chrt27082-21diskstats21:50:440
738421150,3chrt7385-21sleep23:46:310
2726021140,2sleep027258-21ntpq21:01:030
182321140,3chrt1824-21sleep23:38:240
2033221130,2chrt20334-21irqrtprio00:06:100
59621120,4chrt597-21chrt22:48:030
519321120,3chrt5191-21ld21:17:340
2291221110,2sleep022913-21awk23:21:150
1829721110,4chrt18298-21runrttasks21:37:060
3120721100,3chrt31208-21seq23:34:000
2610821100,2sleep026109-21seq19:15:510
2394021100,2chrt23939-21sed20:55:490
1745321100,2sleep017454-21chrt22:25:110
2631921090,2chrt26318-21seq21:49:440
2142021090,2chrt21421-21fschecks_time22:30:570
3182021080,3chrt31821-21seq00:23:310
1299521070,4chrt12996-21chrt21:29:380
2434921060,2chrt24350-21hostname22:35:330
658221030,2sleep06583-21ls19:36:280
2130721010,2chrt21308-21sh23:19:340
2687621000,1sleep026968-21cut20:10:030
22322940,1sleep02234-21grep22:50:540
279052930,2sleep027908-21sed20:10:450
261712880,2sleep026173-21idleruntime23:26:420
138512880,1sleep013849-21ls23:56:150
88302870,1sleep08831-21seq22:11:330
293102860,2sleep029311-21chrt19:20:560
103512850,2sleep010354-21chrt20:35:000
158012840,2sleep015800-21sed23:11:060
17402790,2sleep01741-21chrt00:26:530
52142770,2sleep05215-21seq00:32:110
21844907615,53cyclictest13224-21ntpq23:07:080
293042740,2sleep029305-21smartctl22:42:180
40792730,2sleep04080-21seq20:25:050
2184490735,56cyclictest32334-21apt-get21:10:180
2184490725,57cyclictest13954-21munin-run22:20:010
2184490725,46cyclictest11368-21users23:52:260
2184490716,56cyclictest19995-21ssh21:40:130
2184490715,56cyclictest1002-21/usr/sbin/munin22:00:320
2184490715,55cyclictest30591-21perl21:55:550
2184490714,58cyclictest436-21runrttasks19:43:360
2184490714,58cyclictest15641-21ntpq22:21:510
2184490714,47cyclictest26787-21irqrtprio00:16:040
191442718,47sleep019149-21df_inode19:05:230
2184490706,52cyclictest1953-21apt-get19:30:160
2184490706,44cyclictest17977-21fw_packets19:55:360
2184490705,43cyclictest7110-21/usr/sbin/munin00:35:350
2184490704,55cyclictest14283-21/usr/sbin/munin20:40:420
2184490704,46cyclictest31332-21ntpq20:16:070
21844907016,45cyclictest4146-21/usr/sbin/munin22:05:390
21844907013,47cyclictest0-21swapper19:10:420
2184490696,54cyclictest31317-21/usr/sbin/munin19:26:100
2184490694,56cyclictest8259-21/usr/sbin/munin23:00:330
21844906917,45cyclictest14576-21aten2.4_rfpower19:50:250
21844906912,49cyclictest6226-21seq22:56:270
2184490685,53cyclictest18076-21ntpq20:46:200
2184490684,54cyclictest20025-21aten2.4_rfpower20:50:250
2184490684,54cyclictest16284-21aten2.4-expect00:00:350
2184490684,46cyclictest12412-21ntpq19:46:010
2184490683,47cyclictest30279-21ntpq21:05:570
2184490665,53cyclictest21516-21fschecks_count20:01:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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