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2026-09-04 - 21:21

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 Fri Sep 04, 2026 12:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1595321320,3sleep20-21swapper/209:04:282
1595321320,3sleep20-21swapper/209:04:282
856221050,3chrt0-21swapper/310:14:083
856221050,3chrt0-21swapper/310:14:083
55432990,3sleep30-21swapper/311:29:293
273022880,3sleep20-21swapper/212:29:222
273022880,3sleep20-21swapper/212:29:222
303442830,3sleep30-21swapper/309:44:213
311722810,1sleep3431rcuc/308:19:223
311722810,1sleep3431rcuc/308:19:223
151942750,2sleep20-21swapper/210:29:262
151942750,2sleep20-21swapper/210:29:262
232002690,2chrt171ktimers/007:59:170
232002690,2chrt171ktimers/007:59:170
104142690,3sleep30-21swapper/308:49:293
126292680,3chrt0-21swapper/311:49:233
126292680,3chrt0-21swapper/311:49:233
278212650,2chrt0-21swapper/112:29:291
278212650,2chrt0-21swapper/112:29:291
88562630,2chrt0-21swapper/310:14:243
88562630,2chrt0-21swapper/310:14:243
38162590,4sleep03713-21/usr/sbin/munin08:34:190
38162590,4sleep03713-21/usr/sbin/munin08:34:190
265642570,2sleep30-21swapper/309:34:203
265642570,2sleep30-21swapper/309:34:203
185452570,3sleep10-21swapper/109:14:081
185452570,3sleep10-21swapper/109:14:081
124732570,2sleep00-21swapper/010:24:140
124732570,2sleep00-21swapper/010:24:140
16242560,2sleep11812-21cat11:19:271
16242560,2sleep11812-21cat11:19:271
16242560,2sleep11812-21cat11:19:271
147722550,3sleep20-21swapper/209:04:082
147722550,3sleep20-21swapper/209:04:082
297262530,1sleep10-21swapper/109:44:071
297262530,1sleep10-21swapper/109:44:071
177842520,1chrt0-21swapper/009:09:280
177842520,1chrt0-21swapper/009:09:280
121532510,1chrt12151-21sendmail_mailtr08:54:290
121532510,1chrt12151-21sendmail_mailtr08:54:290
23392470,3sleep02344-21cat11:24:080
23392470,3sleep02344-21cat11:24:080
23392470,3sleep02344-21cat11:24:080
265792460,3chrt0-21swapper/210:59:292
265792460,3chrt0-21swapper/210:59:292
48862430,3sleep30-21swapper/310:04:113
48862430,3sleep30-21swapper/310:04:113
326902420,4sleep20-21swapper/211:16:382
326902420,4sleep20-21swapper/211:16:382
233842420,1sleep123565-21ls12:19:211
233842420,1sleep123565-21ls12:19:211
233842420,1sleep123565-21ls12:19:211
306152410,3sleep20-21swapper/208:19:172
306152410,3sleep20-21swapper/208:19:172
238892400,4sleep20-21swapper/210:54:242
238892400,4sleep20-21swapper/210:54:242
162502390,1sleep30-21swapper/307:39:223
162502390,1sleep30-21swapper/307:39:223
94932370,2sleep19613-21grep08:49:201
6617993728,7cyclictest14875-21threads11:54:330
297222370,2sleep029726-21tail11:09:200
278222370,3sleep30-21swapper/308:09:293
29002360,3sleep30-21swapper/311:24:233
29002360,3sleep30-21swapper/311:24:233
6617993530,3cyclictest0-21swapper/009:04:080
6617993530,3cyclictest0-21swapper/009:04:080
6620993428,4cyclictest14757-21gltestperf10:29:211
6620993428,4cyclictest14757-21gltestperf10:29:211
6620993426,6cyclictest8754-21latency_hist10:14:151
6620993426,6cyclictest8754-21latency_hist10:14:151
6617993425,6cyclictest31328-21processes08:19:260
6617993425,6cyclictest31328-21processes08:19:260
6617993424,8cyclictest27186-21cut12:29:210
6617993424,8cyclictest27186-21cut12:29:210
6620993324,7cyclictest3843-21netstat09:59:261
6620993324,7cyclictest3843-21netstat09:59:261
661799335,10cyclictest14207-21taskset10:28:520
661799335,10cyclictest14207-21taskset10:28:520
317392330,1sleep031745-21sed09:49:130
661799325,16cyclictest28895-21seq11:05:420
36982320,2sleep00-21swapper/011:24:320
36982320,2sleep00-21swapper/011:24:320
6620993124,6cyclictest11408-21cut08:54:211
6620993124,6cyclictest11408-21cut08:54:211
6620993124,5cyclictest27764-21cut11:04:201
6620993123,6cyclictest10610-21kernelversion11:44:241
6620993122,7cyclictest2083-21cut08:29:201
6620993122,7cyclictest2083-21cut08:29:201
661799318,6cyclictest8289-21taskset10:10:390
661799318,6cyclictest8289-21taskset10:10:390
6617993123,6cyclictest22411-21kernelversion10:49:220
6617993123,6cyclictest22411-21kernelversion10:49:220
6617993120,8cyclictest700-21192.168.115.40-manager10:41:520
6617993120,8cyclictest700-21192.168.115.40-manager10:41:520
6617993120,8cyclictest700-21192.168.115.40-manager10:41:520
294252310,3chrt0-21swapper/208:14:272
158172310,2sleep015818-21sshd10:30:380
158172310,2sleep015818-21sshd10:30:380
148392310,2chrt0-21swapper/309:04:093
148392310,2chrt0-21swapper/309:04:093
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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