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2026-04-27 - 06:53

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 Mon Apr 27, 2026 00:44:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2058621320,2sleep020587-21chrt23:19:460
1925921220,2chrt19254-21hddtemp_smartct20:50:390
348721210,2sleep03489-21grep22:05:380
115321200,3chrt1152-21ssh22:51:040
1060921190,2sleep010623-21runrttasks21:27:170
2863921180,3chrt28640-21apt-config00:20:140
1709021170,3chrt17089-21/usr/sbin/munin21:36:450
1665121170,3chrt16652-21sleep19:54:350
2751321140,3chrt27511-21apt-get19:20:110
2137321140,1sleep021374-21runrttasks00:09:200
1865321140,2sleep018654-21cut20:50:040
2523321130,2sleep025234-21grep23:26:270
2973721120,2chrt29738-21chrt23:32:250
2404521110,2sleep024047-21sendmail_mailqu21:47:120
2107921110,2sleep021080-21aten2.4_rfpower23:20:340
170521100,2chrt1709-21modprobe23:40:000
1267921100,1sleep012680-21runrttasks22:19:310
1189021100,2sleep011891-21seq23:55:130
3189521090,3chrt31896-21chrt21:59:390
1970021090,2chrt19698-21/usr/sbin/munin21:41:000
406821070,2chrt4070-21cut20:25:450
2080621070,3chrt20805-21/usr/sbin/munin20:00:420
665921060,2sleep06660-21runrttasks22:58:420
613221040,2chrt6133-21sh21:21:000
244592990,2sleep024460-21seq00:13:450
9722980,3sleep0975-21irqrtprio20:20:460
289602950,2sleep028962-21uname21:05:460
155622950,2sleep015563-21ld23:11:300
273002920,1sleep027299-21sed22:41:060
253332910,2sleep025336-21sed19:15:480
258252850,2sleep025827-21hostname21:50:350
116592850,3chrt43-21kswapd023:06:240
218442840,2sleep021845-21seq20:55:130
25732820,2sleep02574-21seq22:04:100
193152828,18sleep019322-21ntpq19:05:570
134202820,2sleep013421-21seq20:40:460
49582810,2sleep04959-21ssh21:19:220
322392790,2sleep032240-21chrt21:11:100
232662780,1sleep023267-21chrt20:05:160
324892770,2sleep032490-21seq22:49:060
68442760,2sleep06846-21cut00:35:540
47832710,1sleep04784-21chrt23:44:230
254282710,1sleep025429-21seq22:38:100
110662670,2sleep011067-21seq23:53:330
106942670,2sleep010696-21wc23:05:070
39362630,1sleep03937-21seq19:33:470
82322560,2sleep08233-21sh23:49:420
73072554,8sleep07324-21ntpq20:30:500
44872550,1sleep04488-21seq00:31:580
325512520,2sleep032552-21fschecks_count00:25:520
268052513,7sleep026803-21ssh00:17:030
21140905019,24cyclictest0-21swapper21:32:190
21140904818,22cyclictest0-21swapper22:13:350
82332470,3chrt8232-21/usr/sbin/munin19:40:390
21140904719,21cyclictest0-21swapper22:33:150
216172460,2chrt21615-21/usr/sbin/munin19:10:300
2114090445,11cyclictest16834-21df22:25:390
21140904416,21cyclictest0-21swapper22:22:540
21140904416,20cyclictest0-21swapper00:02:420
21140904415,9cyclictest26162-21ntpq21:01:080
2114090435,28cyclictest12080-21seq19:46:140
2114090425,10cyclictest17328-21df19:55:290
2114090415,18cyclictest26645-21df20:10:280
2114090404,18cyclictest30800-21aten2.4_rfpower19:25:260
2114090404,10cyclictest29423-21/usr/sbin/munin20:15:430
2114090397,17cyclictest4659-21telnet19:35:230
2114090394,8cyclictest10478-21ntpq20:35:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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