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2026-07-11 - 23:26

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 Sat Jul 11, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31277211493,16sleep20-21swapper/207:06:572
31286210887,16sleep10-21swapper/107:07:051
31507210685,15sleep00-21swapper/007:09:560
31475210386,12sleep30-21swapper/307:09:313
294402770,0sleep1221ktimersoftd/109:56:521
195112760,1sleep1221ktimersoftd/111:26:561
214492740,0sleep00-21swapper/012:36:010
8482690,1sleep10-21swapper/110:00:581
214352680,2sleep123-21ksoftirqd/108:04:291
67102580,0sleep10-21swapper/111:47:121
31542993817,19cyclictest8831-21ssh11:50:112
3154099320,30cyclictest0-21swapper/009:20:110
3154099310,18cyclictest0-21swapper/011:50:110
116962290,1sleep3381ktimersoftd/309:00:003
273662250,1sleep00-21swapper/011:35:170
3154299220,17cyclictest0-21swapper/209:58:042
244762220,0sleep30-21swapper/310:59:273
3154399210,19cyclictest0-21swapper/310:00:123
3154099211,18cyclictest0-21swapper/007:15:130
3154099210,19cyclictest0-21swapper/009:00:120
3154099210,19cyclictest0-21swapper/007:55:130
31542992016,2cyclictest0-21swapper/211:15:122
3154299200,15cyclictest0-21swapper/210:16:042
3154299190,17cyclictest0-21swapper/208:30:112
31542991714,2cyclictest6433-21kworker/u8:009:36:042
3154199172,13cyclictest3127-21nscd12:34:361
3154199170,3cyclictest0-21swapper/111:41:131
31542991613,2cyclictest6858-21kworker/u8:011:27:042
31542991613,2cyclictest25685-21kworker/u8:209:32:042
31541991613,2cyclictest21346-21kworker/u8:211:37:051
3154199161,13cyclictest10495-21ntp_states07:35:191
3154199160,14cyclictest0-21swapper/109:09:591
3154399151,3cyclictest0-21swapper/312:28:423
31543991510,3cyclictest0-21swapper/311:45:413
3154399150,13cyclictest27822-21ssh09:55:183
31542991512,2cyclictest28336-21kworker/u8:211:06:042
31542991512,2cyclictest22269-21kworker/u8:210:06:052
31542991512,2cyclictest13370-21kworker/u8:109:17:042
31542991510,3cyclictest5770-21kworker/2:012:26:032
31542991510,3cyclictest0-21swapper/211:46:032
3154299150,14cyclictest0-21swapper/207:50:012
31541991511,2cyclictest0-21swapper/109:30:221
31541991510,3cyclictest393-21awk07:11:021
31541991510,3cyclictest0-21swapper/109:21:121
3154199150,3cyclictest0-21swapper/109:35:511
3154199150,13cyclictest0-21swapper/112:00:001
3154199150,13cyclictest0-21swapper/109:25:131
3154099151,3cyclictest0-21swapper/010:59:120
3154099151,12cyclictest9123-21timerandwakeup11:16:050
31540991510,3cyclictest28235-21aten2.4_r3power12:10:140
3154099150,13cyclictest0-21swapper/009:30:010
35002140,2sleep20-21swapper/211:10:222
35002140,2sleep20-21swapper/211:10:222
3154399141,2cyclictest23329-21ssh11:31:003
3154399140,12cyclictest0-21swapper/312:13:173
3154299141,2cyclictest11509-21apt-get09:00:052
31542991411,2cyclictest27316-21kworker/u8:007:26:042
31542991411,2cyclictest15243-21kworker/u8:112:23:042
31542991411,2cyclictest15243-21kworker/u8:112:00:052
31542991411,2cyclictest13556-21kworker/u8:010:21:042
3154299140,9cyclictest0-21swapper/211:01:042
3154299140,2cyclictest0-21swapper/211:57:042
3154299140,12cyclictest23144-21ssh11:30:432
3154299140,12cyclictest0-21swapper/210:13:312
3154299140,12cyclictest0-21swapper/209:41:062
3154199149,3cyclictest3127-21nscd11:04:491
3154199149,3cyclictest0-21swapper/108:51:031
3154199148,5cyclictest0-21swapper/110:41:041
3154199143,6cyclictest0-21swapper/107:45:011
3154199141,3cyclictest15573-21diskmemload09:41:001
3154199141,2cyclictest5438-21apt-get12:20:111
31541991411,2cyclictest0-21swapper/110:56:131
31541991411,2cyclictest0-21swapper/110:30:131
3154199140,2cyclictest0-21swapper/110:46:321
3154199140,12cyclictest89112sleep111:16:021
3154199140,12cyclictest7593-21latency_hist08:50:001
3154199140,12cyclictest17753-21diskstats09:45:161
3154199140,12cyclictest0-21swapper/112:08:541
3154199140,12cyclictest0-21swapper/111:30:111
3154199140,12cyclictest0-21swapper/110:54:251
3154099149,3cyclictest0-21swapper/011:45:560
3154099149,3cyclictest0-21swapper/010:11:060
3154099142,6cyclictest0-21swapper/009:55:000
3154099140,12cyclictest16670-21ssh11:24:590
3154099140,12cyclictest15573-21diskmemload09:11:020
3154399139,3cyclictest21833-21munin-node3
31543991310,2cyclictest29979-21ssh09:24:583
31543991310,2cyclictest0-21swapper/311:15:203
31543991310,2cyclictest0-21swapper/310:52:323
3154399130,3cyclictest15573-21diskmemload11:01:373
3154399130,11cyclictest15573-21diskmemload09:17:283
3154399130,11cyclictest0-21swapper/312:32:163
3154399130,11cyclictest0-21swapper/312:20:163
3154399130,11cyclictest0-21swapper/311:57:293
31542991310,2cyclictest31216-21kworker/u8:010:04:042
31542991310,2cyclictest29550-21kworker/u8:008:36:042
31542991310,2cyclictest17903-21kworker/u8:009:12:012
31542991310,2cyclictest15573-21diskmemload12:31:122
31542991310,2cyclictest0-21swapper/211:36:492
31542991310,2cyclictest0-21swapper/209:48:302
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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