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2025-11-28 - 09:12

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #6

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.
Unexpectedly long latencies may be caused by SMIs
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 the 100 highest latencies:
System rack3slot6s.osadl.org (updated Fri Nov 28, 2025 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20221211697,14sleep30-21swapper/319:09:073
202202115104,6sleep20-21swapper/219:09:062
20132210695,6sleep10-21swapper/119:07:561
3243721050,1sleep332436-21ssh23:57:283
19968210078,17sleep00-21swapper/019:05:510
113232740,0sleep00-21swapper/023:00:170
30742690,1sleep3381ktimersoftd/321:05:203
120042690,0sleep20-21swapper/223:00:272
310842660,4sleep32032299cyclictest22:12:263
132402580,0sleep20-21swapper/223:36:392
2032199211,18cyclictest0-21swapper/222:09:042
2032199210,4cyclictest0-21swapper/223:22:042
2032099210,16cyclictest0-21swapper/122:49:041
2032199202,2cyclictest0-21swapper/222:27:042
218782190,1sleep3381ktimersoftd/320:30:273
2032199192,2cyclictest0-21swapper/223:49:042
20321991915,3cyclictest2218-21kworker/u8:220:11:042
20321991915,2cyclictest23805-21kworker/u8:222:51:042
2032199190,2cyclictest0-21swapper/221:28:012
2031999190,18cyclictest0-21swapper/022:29:040
20321991815,2cyclictest24295-21kworker/u8:019:39:042
20321991815,2cyclictest12042-21kworker/u8:119:27:032
20321991714,2cyclictest24517-21kworker/u8:120:55:042
20321991714,2cyclictest18826-21kworker/u8:022:00:042
20321991714,2cyclictest15182-21kworker/u8:223:11:042
2032099170,15cyclictest0-21swapper/123:26:121
20321991613,2cyclictest32160-21kworker/u8:119:41:042
20321991613,2cyclictest24517-21kworker/u8:121:06:042
20321991613,2cyclictest24295-21kworker/u8:020:00:042
20321991613,2cyclictest24295-21kworker/u8:019:48:042
20321991613,2cyclictest24273-21kworker/u8:122:43:032
2032199160,2cyclictest0-21swapper/222:21:042
2032199160,14cyclictest0-21swapper/221:56:042
2032099162,2cyclictest0-21swapper/121:25:011
20320991613,2cyclictest20865-21kworker/u8:100:31:041
2032099161,13cyclictest15273-21apt-get23:05:111
2032099161,13cyclictest10458-21df22:25:141
2032099161,13cyclictest0-21swapper/123:10:131
2032099161,13cyclictest0-21swapper/122:33:141
2032099160,2cyclictest0-21swapper/100:22:011
20319991613,2cyclictest32573-21kworker/u8:023:22:040
2031999160,3cyclictest16237-21sendmail20:20:000
16842161,3sleep00-21swapper/000:34:300
20322991512,2cyclictest20865-21kworker/u8:100:22:013
20322991512,2cyclictest0-21swapper/322:04:073
2032299150,13cyclictest2479-21aten2.4_r3power00:35:133
2032299150,13cyclictest0-21swapper/323:44:573
2032299150,13cyclictest0-21swapper/322:50:173
2032299150,13cyclictest0-21swapper/321:14:073
20321991512,2cyclictest8475-21kworker/u8:120:05:042
20321991512,2cyclictest31894-21kworker/u8:000:06:032
20321991512,2cyclictest28633-21kworker/u8:219:31:042
20321991512,2cyclictest27693-21kworker/u8:121:54:042
20321991512,2cyclictest24517-21kworker/u8:121:20:042
20321991512,2cyclictest24295-21kworker/u8:019:20:012
20321991512,2cyclictest23791-21kworker/u8:123:50:042
20321991512,2cyclictest2218-21kworker/u8:220:47:042
20321991512,2cyclictest20602-21kworker/u8:219:19:042
20321991512,2cyclictest14597-21kworker/u8:020:37:042
2032099159,4cyclictest21-21rcuc/121:48:041
20320991512,2cyclictest11436-21kworker/u8:200:15:041
2032099150,2cyclictest0-21swapper/123:43:051
2032099150,2cyclictest0-21swapper/121:40:291
2032099150,2cyclictest0-21swapper/121:35:201
2032099150,2cyclictest0-21swapper/121:24:301
20319991512,2cyclictest23805-21kworker/u8:222:09:040
20319991510,3cyclictest26370-21ntp_states00:25:210
84882140,3sleep10-21swapper/120:00:131
74692140,3sleep07477-21ssh22:21:140
20322991411,2cyclictest21775-21ssh23:45:273
20322991411,2cyclictest0-21swapper/322:18:273
20322991411,2cyclictest0-21swapper/321:19:473
20322991411,2cyclictest0-21swapper/320:15:173
20322991411,2cyclictest0-21swapper/300:15:073
2032299140,2cyclictest0-21swapper/322:37:073
2032299140,2cyclictest0-21swapper/321:55:173
2032299140,13cyclictest0-21swapper/323:25:273
2032299140,13cyclictest0-21swapper/322:46:573
2032299140,13cyclictest0-21swapper/322:41:473
2032299140,12cyclictest3983-21diskmemload21:25:203
2032299140,12cyclictest3983-21diskmemload00:29:273
2032299140,12cyclictest10016-21ssh22:59:403
2032299140,12cyclictest0-21swapper/323:50:583
2032299140,12cyclictest0-21swapper/323:35:123
2032299140,12cyclictest0-21swapper/323:30:193
2032299140,12cyclictest0-21swapper/321:30:253
2032299140,12cyclictest0-21swapper/320:10:153
2032299140,12cyclictest0-21swapper/300:32:393
20321991411,2cyclictest6752-21kworker/u8:221:31:042
20321991411,2cyclictest4727-21kworker/u8:023:32:042
20321991411,2cyclictest23805-21kworker/u8:222:31:042
20321991411,2cyclictest23791-21kworker/u8:100:04:012
20321991411,2cyclictest2218-21kworker/u8:220:25:042
20321991411,2cyclictest14597-21kworker/u8:020:19:042
20321991411,2cyclictest0-21swapper/223:05:272
20321991410,3cyclictest5007-21munin-run22:20:002
20321991410,3cyclictest11740-21df_abs00:10:142
20321991410,2cyclictest0-21swapper/200:30:062
2032199140,2cyclictest0-21swapper/222:35:042
2032199140,2cyclictest0-21swapper/222:13:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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