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2026-09-01 - 23:52

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 Tue Sep 01, 2026 12:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
521421210,2chrt5215-21runrttasks08:36:060
2977821210,2chrt29779-21runrttasks10:52:050
2468521210,2chrt24686-21ssh11:33:250
2616421190,2chrt26165-21sleep10:46:300
3181321180,2chrt31793-21ntpq10:06:280
2970721180,2chrt29708-21chrt10:03:360
2686121180,3chrt26088-21apt-get12:25:530
2535121180,2chrt25352-21sleep08:16:270
1341921180,2chrt13420-21df12:05:410
2471021170,1sleep024712-21processes12:22:100
1706121170,3chrt17062-21/usr/sbin/munin12:11:020
2788921160,3chrt26779-21apt-get08:21:070
277221160,3chrt2773-21chrt12:37:230
185121160,3chrt1852-21runrttasks10:59:240
118621160,2sleep01188-21if_err_eth009:21:050
2191121140,2sleep021912-21cpuspeed10:40:360
2051721140,2chrt20518-21sleep09:50:180
864721130,3chrt8646-21seq11:09:450
109821120,3chrt1102-21aten2.4_rfpower08:30:250
950121100,2sleep09504-21chrt07:51:070
1837521100,2chrt18376-21runrttasks11:24:100
2183221030,2chrt21833-21sleep09:02:320
2065821030,2chrt20659-21sleep07:17:040
815421000,2sleep08155-21cat10:20:120
1480421000,2sleep014805-21cat10:30:040
57982960,2sleep05800-21timerwakeupswit09:27:280
275342950,2sleep027535-21seq07:28:540
324242910,2sleep032425-21seq12:33:350
71602900,2sleep07157-21interrupts11:56:010
42422840,1sleep04245-21seq11:02:190
220532820,1sleep022057-21grep11:30:000
42172800,2sleep04218-21seq10:14:180
301362760,1sleep030137-21seq11:41:220
141232690,2sleep014125-21cut11:17:170
106802690,2sleep010683-21awk08:45:240
104122670,1sleep010414-21latency_hist08:45:030
154442660,1sleep015445-21seq07:09:560
204972630,2sleep020498-21sh10:38:040
107622620,2sleep010763-21aten2.4-expect09:35:380
93332610,2sleep09332-21awk11:10:370
147382610,2sleep014740-21aten2.4_rfpower08:00:250
244032540,2sleep024400-21tune2fs09:55:530
82492530,2sleep08247-21load09:31:140
15547904915,25cyclictest0-21swapper07:40:390
15547904819,21cyclictest0-21swapper10:17:400
15547904816,23cyclictest0-21swapper12:04:040
15547904816,21cyclictest0-21swapper09:49:010
15547904813,14cyclictest30750-21ntpq09:16:240
15547904718,22cyclictest4228-21ls11:51:160
15547904714,23cyclictest0-21swapper12:17:430
15547904713,15cyclictest16951-21munin-run09:45:040
15547904622,16cyclictest412-21snmpd08:55:160
15547904620,17cyclictest14867-21apt-get10:30:190
15547904617,19cyclictest0-21swapper11:49:550
15547904614,24cyclictest26090-21apt-get09:10:240
15547904516,19cyclictest16008-21/usr/sbin/munin07:10:270
15547904514,23cyclictest23606-21ps09:05:460
15547904513,23cyclictest6441-21grep07:46:100
15547904415,21cyclictest21230-21fschecks_time08:10:360
15547904412,23cyclictest28677-21sendmail11:39:590
15547904411,13cyclictest31448-21runrttasks08:26:040
1554790434,19cyclictest32489-21ntpq07:35:540
1554790429,14cyclictest13919-21df08:50:310
15547904211,22cyclictest27949-21apt-get07:30:140
15547904211,12cyclictest17607-21sh08:05:060
137582420,3sleep013755-21sshd07:58:270
15547904113,8cyclictest21935-21apt-get07:20:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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