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2026-07-02 - 21:49

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack4slot1s.osadl.org (updated Thu Jul 02, 2026 12:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
525721530,1sleep1281ktimers/107:38:211
37821100,2chrt373-21strings11:43:250
37821100,2chrt373-21strings11:43:250
18162990,3sleep30-21swapper/308:53:323
18162990,3sleep30-21swapper/308:53:323
18162990,3sleep30-21swapper/308:53:323
250562920,2sleep00-21swapper/011:23:230
250562920,2sleep00-21swapper/011:23:230
297292870,2sleep029730-21/usr/sbin/munin10:08:300
297292870,2sleep029730-21/usr/sbin/munin10:08:300
297292870,2sleep029730-21/usr/sbin/munin10:08:300
210082860,3sleep00-21swapper/011:13:220
198362830,2sleep10-21swapper/109:43:231
198362830,2sleep10-21swapper/109:43:231
198362830,2sleep10-21swapper/109:43:231
17782720,2sleep30-21swapper/311:48:233
117492660,3sleep00-21swapper/012:13:280
117492660,3sleep00-21swapper/012:13:280
260542650,3sleep00-21swapper/008:33:230
260542650,3sleep00-21swapper/008:33:230
19392620,4chrt1940-21sendmail10:23:090
19392620,4chrt1940-21sendmail10:23:090
19392620,4chrt1940-21sendmail10:23:090
82602590,4chrt8261-21latency_hist09:13:190
82602590,4chrt8261-21latency_hist09:13:190
82602590,4chrt8261-21latency_hist09:13:190
110182590,3sleep010183-21/usr/sbin/munin09:18:290
110182590,3sleep010183-21/usr/sbin/munin09:18:290
194142560,3chrt0-21swapper/009:43:100
194142560,3chrt0-21swapper/009:43:100
173782500,3sleep017359-21switchtime08:08:310
173782500,3sleep017359-21switchtime08:08:310
278302430,2sleep30-21swapper/310:03:283
278302430,2sleep30-21swapper/310:03:283
278302430,2sleep30-21swapper/310:03:283
24452410,2sleep20-21swapper/208:58:092
24452410,2sleep20-21swapper/208:58:092
24452410,2sleep20-21swapper/208:58:092
199052410,1sleep119922-21idleruntime-cro08:18:091
199052410,1sleep119922-21idleruntime-cro08:18:091
199052410,1sleep119922-21idleruntime-cro08:18:091
296452400,2chrt29643-21users11:33:320
296452400,2chrt29643-21users11:33:320
175502400,2sleep1271rcuc/108:08:321
175502400,2sleep1271rcuc/108:08:321
28516993934,3cyclictest201rcuc/010:29:130
28516993934,3cyclictest201rcuc/010:29:130
28516993932,4cyclictest201rcuc/012:20:140
28516993932,4cyclictest201rcuc/012:20:140
2851799366,8cyclictest281ktimers/109:13:421
2851799366,8cyclictest281ktimers/109:13:421
28516993631,3cyclictest201rcuc/008:18:400
28516993631,3cyclictest201rcuc/008:18:400
28516993631,3cyclictest201rcuc/008:18:400
221592360,3sleep30-21swapper/311:13:333
221592360,3sleep30-21swapper/311:13:333
221592360,3sleep30-21swapper/311:13:333
28516993529,4cyclictest201rcuc/008:38:410
28516993529,4cyclictest201rcuc/008:38:410
28516993529,4cyclictest201rcuc/008:38:410
28516993513,3cyclictest201rcuc/007:27:390
28517993427,5cyclictest32350-21switchtime08:48:311
28517993427,5cyclictest32350-21switchtime08:48:311
28516993429,3cyclictest3258-21latency_hist11:53:090
28516993429,3cyclictest3258-21latency_hist11:53:090
28516993429,3cyclictest3258-21latency_hist11:53:090
28517993227,4cyclictest22382-21gltestperf08:23:231
28517993227,4cyclictest22382-21gltestperf08:23:231
28517993227,3cyclictest26840-21cron10:03:091
28517993227,3cyclictest26840-21cron10:03:091
28517993225,5cyclictest6795-21idleruntime-cro07:43:101
28517993225,5cyclictest6795-21idleruntime-cro07:43:101
2851699329,4cyclictest201rcuc/008:03:570
2851699329,4cyclictest201rcuc/008:03:570
2851699329,4cyclictest201rcuc/008:03:570
28516993226,4cyclictest9801-21needreboot12:08:270
28516993226,4cyclictest9801-21needreboot12:08:270
28516993226,4cyclictest9801-21needreboot12:08:270
28516993225,5cyclictest21061-21cut11:13:230
28516993225,5cyclictest21061-21cut11:13:230
28516993225,5cyclictest21061-21cut11:13:230
28516993224,6cyclictest20641-21cut12:38:230
28516993224,6cyclictest20641-21cut12:38:230
171382320,2sleep20-21swapper/211:03:192
171382320,2sleep20-21swapper/211:03:192
171382320,2sleep20-21swapper/211:03:192
107422320,3sleep30-21swapper/309:18:243
107422320,3sleep30-21swapper/309:18:243
28517993123,6cyclictest281ktimers/109:27:121
28517993123,6cyclictest281ktimers/109:27:121
28517993123,6cyclictest281ktimers/109:27:121
28517993122,7cyclictest14721-21netstat09:28:291
28517993122,7cyclictest14721-21netstat09:28:291
28516993127,2cyclictest0-21swapper/010:28:100
28516993125,4cyclictest28508-21cyclictest11:04:290
28516993125,4cyclictest28508-21cyclictest11:04:290
28516993125,4cyclictest28508-21cyclictest11:04:290
28516993124,5cyclictest24786-21sshd08:28:310
28516993124,5cyclictest24786-21sshd08:28:310
28516993123,6cyclictest6150-21threads07:38:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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