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2026-07-13 - 08:27

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 Jul 13, 2026 00:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2122921200,3chrt21215-21ntpq22:26:220
1605421190,4chrt16055-21runrttasks22:19:070
893021180,3chrt8934-21cpu23:45:370
2679621180,3chrt26794-21ssh21:46:410
1231721150,2sleep012318-21seq23:01:350
2783721140,2chrt27838-21sleep23:25:360
800321130,2chrt8001-21/usr/sbin/munin00:32:260
508621120,2chrt5082-21ps22:02:130
2512721120,2chrt25124-21ntpq22:32:200
1552121120,3chrt15517-21telnet23:55:360
620521100,3chrt6206-21ls22:52:210
468621080,2chrt4687-21chrt00:27:350
1905221080,2chrt19053-21chrt21:35:180
579521070,2chrt5796-21sleep20:23:460
580521060,2chrt5808-21fschecks_count23:40:500
84921040,2chrt851-21sleep19:25:040
1563521040,3chrt15636-21sh19:47:030
43221030,3chrt433-21sh00:21:100
190062990,2sleep019008-21sh22:23:110
124912990,2sleep012494-21rm00:40:010
76282970,2sleep07631-21grep19:35:260
190132940,2sleep019014-21ld23:11:400
101502910,2sleep010153-21head22:10:330
168972870,2sleep016898-21seq19:50:110
325322850,2sleep032533-21chrt21:55:220
233532850,2sleep023354-21chrt20:00:130
205612840,2chrt20235-21apt-get19:56:090
311242810,2sleep031125-21seq23:30:340
226592780,2sleep022660-21awk23:17:170
69182770,2sleep06919-21rm21:16:380
39732760,2sleep03974-21chrt19:30:070
292272760,2sleep029228-21if_err_eth100:16:010
230132750,2sleep023012-21seq00:06:150
130232750,1sleep013025-21ssh21:25:550
295742710,2sleep029576-21chrt22:39:150
264992700,2sleep026500-21seq20:05:200
131312700,2sleep013132-21seq23:51:210
187032670,2sleep018704-21chrt21:34:460
262012660,2sleep026202-21collect220:56:020
109992650,2sleep011002-21cut20:31:250
283092630,2sleep028310-21munin-plugin-st00:15:010
31552620,1sleep03159-21sed23:36:520
89712584,44sleep08980-21ntpq22:56:340
44932583,8sleep04226-21apt-get19:30:530
249452580,3sleep024942-21ssh21:43:450
19512584,7sleep01990-21ssh21:10:000
297492574,8sleep029798-21aten2.4-expect20:10:270
263672570,2sleep026368-21chrt23:22:350
155872570,2sleep015589-21basename20:40:000
307742553,44sleep030783-21chrt21:52:050
217602553,42sleep021789-21munin-run20:50:000
21462543,42sleep02175-21sh22:46:160
52712523,6sleep023910-21cyclictest21:14:550
159042523,41sleep015957-21aten2.4_rfpower20:40:260
219772513,37sleep021980-21sleep20:50:140
23914904920,22cyclictest0-21swapper23:07:300
2198624711,19sleep021987-21ntpq19:05:480
31042460,2sleep03143-21munin-run20:20:010
2391490456,11cyclictest31974-21python322:42:180
23914904514,24cyclictest0-21swapper19:41:320
23914904413,23cyclictest0-21swapper22:07:580
257272434,5sleep011-21ksoftirqd/019:11:340
23914904322,14cyclictest0-21swapper20:25:320
23914904315,21cyclictest0-21swapper00:00:120
115222422,33sleep011530-21ssh21:23:290
2391490415,18cyclictest31119-21munin-run21:05:030
2391490404,10cyclictest30102-21munin-run19:20:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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