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2026-05-09 - 10:01

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 Sat May 09, 2026 00:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2773421260,2chrt27719-21ntpq21:01:150
2667621250,2chrt26665-21ntpq22:37:320
1868021220,3chrt18682-21modprobe21:37:140
420221200,2chrt4207-21sed23:41:030
754421190,2chrt7542-21ntpq22:57:060
609521190,3chrt6096-21ls20:26:280
2455621180,2chrt24555-21/usr/sbin/munin23:22:250
2500121170,4chrt25002-21chrt20:05:350
380821160,2sleep03810-21aten2.4_rfpower21:15:360
2698321140,1sleep026984-21kernelversion23:26:160
2131521140,2sleep021316-21irqrtprio21:41:090
1513021130,2sleep015131-21chrt23:08:440
334521120,3chrt3346-21chrt00:28:310
2656321120,2chrt26565-21ssh21:49:220
2478621120,4chrt24787-21mailstats20:56:240
2301921120,3chrt23018-21ssh22:32:030
2290221100,1sleep022906-21seq00:09:330
215821090,2chrt2159-21sleep19:28:560
1562321080,1sleep015624-21runrttasks23:58:030
1138921070,2chrt11390-21basename20:36:150
142921060,1sleep01430-21runrttasks22:47:440
2303821040,2chrt23039-21sleep20:54:440
23132980,2sleep02314-21seq21:12:350
108912940,2sleep010892-21cut21:25:520
139882900,2sleep013990-21cpu21:30:370
79802860,2sleep07981-21chrt22:10:120
282432860,1sleep028244-21apt-get22:40:100
282462850,2sleep028247-21cat21:51:180
12132810,2sleep01215-21sendmail-msp20:20:010
22620908017,54cyclictest20998-21awk23:17:120
120912800,1sleep012092-21/usr/sbin/munin22:16:030
279712780,2sleep027975-21sh00:16:310
189202780,2sleep018919-21cat19:55:420
22620907615,53cyclictest3021-21sleep22:50:430
2262090755,59cyclictest11382-21ssh23:51:380
204922750,2sleep020494-21runrttasks22:28:230
2262090746,11cyclictest7598-21hddtemp_smartct21:20:570
2262090736,8cyclictest17052-21cpuspeed00:00:370
2262090736,57cyclictest14993-21apt19:50:010
2262090735,11cyclictest30580-21ntpq23:31:410
2262090735,11cyclictest1627-21ntp_states23:37:000
2262090727,55cyclictest17118-21apt-get20:45:190
2262090726,9cyclictest1287-21/usr/sbin/munin22:02:320
2262090726,55cyclictest29983-21apt-get00:20:190
2262090725,57cyclictest11099-21runrttasks23:02:180
2262090725,56cyclictest5709-21ssh00:31:530
2262090725,56cyclictest17104-21ssh23:11:230
2262090724,10cyclictest29333-21df_inode19:20:290
2262090724,10cyclictest23717-21df_inode00:10:400
22620907211,52cyclictest8030-21ntpq23:46:310
2262090715,9cyclictest21755-21diskstats20:00:330
2262090714,58cyclictest26446-21if_err_eth119:15:390
2262090714,11cyclictest31971-21ntpq21:57:010
2262090714,11cyclictest16362-21ntpq22:22:080
2262090714,10cyclictest28109-21/usr/sbin/munin20:10:360
2262090707,52cyclictest1384-21apt-get20:20:180
2262090706,9cyclictest8966-21apt-get19:40:190
2262090705,9cyclictest23769-21ntpq19:10:500
2262090705,8cyclictest6924-21ntpq19:35:580
2262090705,57cyclictest14975-21/usr/sbin/munin20:40:460
2262090704,57cyclictest31039-21python321:06:230
2262090704,10cyclictest7315-21runrttasks19:51:310
2262090703,56cyclictest3035-21runrttasks19:30:260
22620907014,47cyclictest5378-21ssh22:06:040
2262090695,9cyclictest8668-21ntpq00:36:180
2262090694,10cyclictest8835-21ntpq20:31:120
2262090646,11cyclictest22571-21latency_hist19:10:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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