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2026-04-14 - 03:55

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 Apr 14, 2026 00:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2920121230,3chrt29202-21sleep22:44:250
1999321230,2chrt19992-21ssh23:19:210
707321210,2chrt7074-21sleep20:31:140
3106521170,2sleep031066-21seq22:46:390
2500521170,3chrt25004-21ssh00:15:380
1331521170,3chrt13316-21runrttasks23:09:170
654121160,2sleep06542-21irqrtprio00:36:070
3073721140,3chrt30739-21aten2.4_rfpower23:35:340
2142721140,2chrt21423-21ps22:32:130
3229021130,2chrt32291-21perl00:26:260
1246421130,2sleep012466-21runrttasks20:40:350
2591021120,2sleep025911-21chrt22:39:320
2074321120,3chrt20744-21chrt20:01:350
1483021120,2chrt14805-21ntpq22:22:490
2804821110,1sleep028049-21seq21:54:400
1811621110,3chrt18090-21ntpq22:27:280
3024021100,3chrt30241-21sh23:34:590
287621060,2chrt2875-21grep00:30:520
3049221000,2sleep030496-21latency_hist21:10:000
169252990,2chrt16926-21sh21:37:260
207532970,2sleep020755-21cut23:20:350
96802950,1sleep09684-21irqrtprio20:35:440
40462940,2sleep04044-21aten2.4_rfpower22:55:330
303072940,2sleep030303-21smart_sda21:57:240
70862930,2sleep07088-21grep22:11:120
78872910,2sleep07888-21chrt21:24:300
37342890,2sleep03735-21chrt23:43:160
269492880,1sleep026950-21ssh23:30:010
104052880,2sleep010403-21if_eth219:45:420
162632870,1sleep016264-21chrt20:46:010
83152860,1sleep08317-21grep23:50:370
133752860,2sleep013376-21chrt23:57:310
25362820,2sleep02540-21munin-plugin-st20:25:010
197542798,17sleep019758-21sleep19:09:210
141702790,2sleep014171-21seq21:33:340
305002780,1sleep030501-21chrt20:17:010
292692760,2sleep029270-21chrt00:21:280
215042740,2sleep021505-21basename00:10:330
247722730,2sleep024773-21sh21:49:500
308472640,1sleep030848-21hostname21:10:350
189482630,2sleep018950-21cut21:40:540
161802583,9sleep016192-21ssh00:01:530
249542550,2sleep024955-21fschecks_time21:00:360
243972554,7sleep024391-21ntpq19:15:590
50832544,39sleep05086-21df23:45:420
257252540,2chrt25367-21apt-get20:10:380
307362534,8sleep030732-21ntpq19:26:060
64412520,1sleep06446-21munin-plugin-st19:39:590
93462513,37sleep09356-21chrt22:15:120
43212510,3chrt4318-21/usr/sbin/munin22:07:080
40562513,8sleep04060-21chrt21:18:260
250032513,41sleep024985-21apt-get20:09:460
20071905121,21cyclictest0-21swapper23:04:150
238202503,40sleep023824-21runrttasks20:58:490
20071904918,23cyclictest0-21swapper21:29:360
18602495,36sleep01864-21ntpq22:51:320
21882470,2chrt2179-21ssh22:04:220
70802460,2sleep07133-21seq19:40:350
20071904416,19cyclictest0-21swapper23:12:470
2007190435,29cyclictest16619-21cut19:56:070
2007190434,10cyclictest27509-21ntpq19:20:540
2007190426,18cyclictest14014-21ntpq19:51:050
2007190425,10cyclictest1520-21ntpq19:31:220
2007190414,10cyclictest3589-21irqstats20:25:460
20071904120,14cyclictest0-21swapper00:08:450
20071904016,18cyclictest21261-21ntpq19:10:560
2007190397,26cyclictest19458-21ntpq20:51:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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