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2026-07-05 - 20:41

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 Sun Jul 05, 2026 12:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
46021250,2chrt461-21aten2.4_rfpower09:25:380
2293421230,2chrt22935-21if_can011:35:590
2793121200,2chrt27932-21chrt07:35:070
1497121180,2chrt14679-21/usr/sbin/munin10:35:360
806621170,2chrt8067-21chrt12:02:080
2099921170,3chrt21000-21awk09:55:540
3207421160,2chrt32075-21seq12:38:050
931121150,3chrt9307-21ld10:26:220
2916821150,2chrt29169-21sleep10:56:170
1935821150,2sleep019359-21rm09:52:570
2535221140,3chrt25350-21ld10:01:410
2896721120,1sleep028969-21proc_pri10:07:130
1414421100,2chrt14145-21sleep07:11:410
1683121090,2sleep016863-21cut09:00:380
2889621080,2chrt28897-21chrt11:45:130
1242721070,3chrt12428-21sleep12:09:030
2813721060,2sleep028138-21chrt11:43:400
1833421060,2chrt18336-21sed08:10:440
143721060,3chrt1438-21sleep11:03:460
1381221060,1sleep013813-21chrt09:45:140
1012021050,1sleep010121-21chrt08:50:120
2321121030,1sleep023214-21apt-key12:25:170
1967921020,2sleep019680-21chrt10:42:080
47312970,2sleep04734-21chrt07:50:030
74172930,2sleep07418-21ld11:12:320
196542910,2sleep019656-21cut09:05:270
70452870,2sleep07046-21chrt08:45:170
311062870,2sleep031104-21if_eth108:31:330
214442870,2sleep021441-21sendmail_mailqu12:22:110
146322870,3sleep014633-21cut10:35:060
41912840,2sleep04194-21grep08:40:270
192232830,3sleep019227-21sort07:20:400
247512780,1sleep024752-21cat07:30:020
163362780,2sleep016337-21chrt12:15:120
301042770,2sleep030105-21mii-tool09:21:030
305332760,2sleep030534-21chrt10:10:100
49672750,2sleep04970-21sed09:31:530
219032750,2sleep021904-21chrt11:34:420
150162730,2sleep015017-21chrt11:24:050
53452690,3sleep05346-21sh11:58:010
157732680,3sleep015778-21proc_pri08:06:220
78472650,2sleep07848-21seq10:25:000
129152650,1sleep012916-21seq09:43:220
284702640,1sleep028471-21seq12:32:220
274132580,2sleep027416-21grep09:16:490
275492570,2sleep027553-21chrt07:34:250
52012544,41sleep05199-21diskstats07:50:310
140252533,40sleep014063-21irqstats12:11:090
97922520,2sleep09791-21seq09:38:540
231822510,1sleep023183-21chrt10:47:150
20222513,39sleep02027-21ldconfig08:36:110
12298905019,22cyclictest0-21swapper11:52:480
95312490,3chrt9415-21ssh11:15:530
12298904919,23cyclictest0-21swapper10:54:210
12298904818,23cyclictest0-21swapper09:14:110
1037924812,20sleep010381-21ntpq07:05:480
12298904717,22cyclictest0-21swapper11:29:250
256502453,35sleep025655-21sshd08:22:160
12298904517,21cyclictest0-21swapper10:18:520
83362433,31sleep08144-21apt-get07:55:420
33092430,3sleep03310-21seq11:06:150
12298904319,16cyclictest0-21swapper08:55:330
12298904319,16cyclictest0-21swapper08:25:320
1229890414,28cyclictest31610-21perl07:40:380
1229890404,19cyclictest20919-21df08:15:280
1229890394,24cyclictest15524-21apt-get07:15:120
12298903819,12cyclictest11739-21fschecks_time08:00:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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