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2026-04-30 - 03:02

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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.

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 792 highest latencies:
System rackeslot6s.osadl.org (updated Wed Apr 29, 2026 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2141403999185,4cyclictest231ktimers/108:50:011
2141400996615,47cyclictest131ktimers/009:55:120
2141400996510,21cyclictest2163002-21rm09:15:010
2141400996252,7cyclictest131ktimers/010:05:010
214140099602,16cyclictest0-21swapper/010:20:000
2141404995915,22cyclictest2161360-21/usr/sbin/munin09:05:182
2141404995810,17cyclictest30-21rcuc/212:30:002
2141404995622,15cyclictest32-21ksoftirqd/212:00:172
2141400995643,4cyclictest0-21swapper/007:50:010
2141400995643,4cyclictest0-21swapper/007:50:010
2141403995547,5cyclictest1258-21in:imuxsock11:30:001
2141403995542,9cyclictest2153559-21sendmail08:20:001
2141400995547,6cyclictest0-21swapper/009:30:010
2141404995419,12cyclictest30-21rcuc/211:00:012
2141400995133,15cyclictest167350irq/118-8000000.ethernet-tx009:15:280
2141403994929,12cyclictest231ktimers/112:35:121
2141400994936,9cyclictest2195365-21latency_hist12:25:010
2141403994833,9cyclictest0-21swapper/110:10:291
214140399481,5cyclictest0-21swapper/108:10:001
2141400994838,5cyclictest0-21swapper/009:05:100
2141400994838,4cyclictest2178413-21latency_hist10:45:000
2141400994834,10cyclictest2147462-21grep07:40:280
2141403994717,7cyclictest0-21swapper/110:30:011
2141403994711,9cyclictest2171462-21apt-get10:05:011
2141404994634,8cyclictest2159426-21grep08:50:282
2141403994642,2cyclictest0-21swapper/109:50:011
2141400994637,5cyclictest167350irq/118-8000000.ethernet-tx012:25:200
2141400994624,20cyclictest20650irq/252-8000000.ethernet07:25:190
2141404994534,6cyclictest2190069-21grep11:50:282
2141404994532,6cyclictest0-21swapper/212:05:272
2141403994534,7cyclictest0-21swapper/108:20:271
2141403994533,7cyclictest0-21swapper/111:40:281
2141403994533,7cyclictest0-21swapper/111:40:281
2141403994531,8cyclictest0-21swapper/112:05:281
2141400994538,5cyclictest2155248-21munin-plugin-st08:30:000
2141400994536,6cyclictest20650irq/252-8000000.ethernet08:15:260
2141400994533,9cyclictest2187588-21sendmail11:40:000
2141404994433,7cyclictest0-21swapper/210:25:002
2141404994432,8cyclictest0-21swapper/207:45:282
2141404994432,8cyclictest0-21swapper/207:45:272
2141404994431,7cyclictest311ktimers/208:05:002
2141404994427,7cyclictest0-21swapper/209:40:282
2141404994426,10cyclictest0-21swapper/207:35:182
2141403994435,6cyclictest2178307-21munin-plugin-st10:44:591
2141403994433,7cyclictest2157682-21grep08:40:281
2141403994433,7cyclictest2157682-21grep08:40:281
2141403994432,9cyclictest0-21swapper/111:20:001
2141403994431,8cyclictest0-21swapper/112:25:311
2141404994333,6cyclictest2193493-21grep12:10:292
2141404994333,5cyclictest0-21swapper/212:15:292
2141404994330,8cyclictest0-21swapper/211:55:292
2141404994328,7cyclictest0-21swapper/209:00:262
2141403994337,3cyclictest14-21rcu_preempt09:35:191
2141403994335,4cyclictest0-21swapper/111:05:021
2141403994335,4cyclictest0-21swapper/111:05:021
2141403994329,11cyclictest2156932-21sendmail08:40:011
2141400994334,6cyclictest2156810-21grep08:35:270
214140099431,40cyclictest0-21swapper/007:15:020
2141404994232,7cyclictest2181648-21grep11:00:272
2141404994232,7cyclictest2181648-21grep11:00:272
2141404994231,6cyclictest2172392-21munin-plugin-st10:10:012
2141404994230,8cyclictest2163729-21grep09:15:292
214140499422,29cyclictest2183355-21kworker/u8:3+rpciod11:34:222
214140499422,28cyclictest2151863-21kworker/u8:4+rpciod08:12:212
2141403994232,5cyclictest231ktimers/109:45:111
2141400994235,4cyclictest0-21swapper/007:30:250
214140099422,2cyclictest0-21swapper/007:40:010
2141404994134,5cyclictest0-21swapper/209:00:012
2141404994133,4cyclictest2175773-21munin-plugin-st10:29:592
2141404994129,5cyclictest2179077-21grep10:45:292
2141404994126,7cyclictest0-21swapper/209:30:202
2141403994126,10cyclictest0-21swapper/110:35:271
214140099411,4cyclictest2150371-21df_inode08:00:180
214140099411,3cyclictest2175126-21cut10:25:010
214140499409,24cyclictest2-21kthreadd09:46:172
2141404994030,6cyclictest2184956-21grep11:20:272
2141404994030,5cyclictest0-21swapper/212:25:302
2141404994024,10cyclictest0-21swapper/209:10:222
2141404994023,4cyclictest2150932-21kworker/u8:0-events_power_efficient08:40:012
2141404994015,20cyclictest2-21kthreadd12:37:222
2141404994015,18cyclictest2-21kthreadd09:22:192
2141404994013,11cyclictest0-21swapper/211:25:112
2141403994031,4cyclictest0-21swapper/109:00:001
2141403994028,7cyclictest0-21swapper/107:50:281
2141403994024,9cyclictest0-21swapper/110:05:291
2141400994033,5cyclictest2197898-21sendmail12:40:010
214140099402,8cyclictest2180776-21sed10:55:280
2141400994028,8cyclictest0-21swapper/010:50:300
2141400994028,8cyclictest0-21swapper/009:35:280
214140499395,21cyclictest2158569-21head08:45:282
2141404993929,6cyclictest0-21swapper/210:10:192
214140499392,28cyclictest2175762-21kworker/u8:0+rpciod10:54:262
2141403993931,4cyclictest0-21swapper/111:45:281
2141403993929,7cyclictest0-21swapper/110:15:291
2141403993928,5cyclictest0-21swapper/110:50:301
2141403993926,8cyclictest0-21swapper/107:55:291
2141403993926,8cyclictest0-21swapper/107:45:281
2141403993926,8cyclictest0-21swapper/107:45:281
2141403993925,8cyclictest0-21swapper/112:00:271
214140099394,21cyclictest15-21rcuc/010:25:190
2141400993933,4cyclictest0-21swapper/011:15:120
2141400993933,3cyclictest0-21swapper/009:50:020
2141400993922,15cyclictest0-21swapper/008:10:130
2141400993922,15cyclictest0-21swapper/008:05:250
214140099391,9cyclictest0-21swapper/012:35:010
2141400993917,19cyclictest2184480-21sh11:20:150
214140099391,34cyclictest0-21swapper/011:25:160
2141404993829,6cyclictest311ktimers/209:40:012
2141404993828,5cyclictest2144128-21grep07:20:272
2141404993826,8cyclictest0-21swapper/207:30:242
2141404993825,9cyclictest0-21swapper/211:15:292
2141404993825,8cyclictest2142146-21grep07:10:272
2141404993825,7cyclictest311ktimers/207:50:282
2141404993824,9cyclictest0-21swapper/209:25:272
214140499382,19cyclictest2146924-21/usr/sbin/munin07:40:202
214140499381,27cyclictest2168909-21kworker/u8:1+rpciod10:41:182
2141403993829,5cyclictest0-21swapper/108:00:201
2141403993828,8cyclictest2195385-21cat12:25:021
2141403993828,5cyclictest0-21swapper/109:30:301
2141403993824,10cyclictest0-21swapper/109:55:221
2141403993822,8cyclictest0-21swapper/111:50:261
214140399381,4cyclictest0-21swapper/111:15:011
214140399381,32cyclictest0-21swapper/112:30:011
2141400993832,4cyclictest0-21swapper/009:45:140
2141400993831,5cyclictest2188444-21munin-plugin-st11:45:000
2141400993831,5cyclictest2188444-21munin-plugin-st11:45:000
2141400993820,16cyclictest0-21swapper/009:00:160
214140099381,9cyclictest2157215-21df_inode08:40:170
214140099381,9cyclictest2157215-21df_inode08:40:170
2141400993817,19cyclictest0-21swapper/011:00:110
2141400993817,19cyclictest0-21swapper/011:00:110
2141400993811,24cyclictest15-21rcuc/008:45:280
2141404993725,6cyclictest2183327-21grep11:10:272
2141403993733,3cyclictest231ktimers/109:10:111
2141403993725,9cyclictest0-21swapper/107:10:281
2141403993725,8cyclictest2164652-21grep09:20:291
2141403993724,9cyclictest0-21swapper/107:25:301
2141403993723,9cyclictest0-21swapper/110:20:291
2141400993731,4cyclictest0-21swapper/012:05:160
2141400993730,5cyclictest0-21swapper/007:50:270
2141400993730,4cyclictest0-21swapper/011:45:240
2141400993729,4cyclictest0-21swapper/008:20:150
2141400993722,13cyclictest0-21swapper/008:50:170
214140099371,34cyclictest0-21swapper/010:30:120
2141404993626,5cyclictest0-21swapper/212:25:012
2141404993624,7cyclictest0-21swapper/209:55:222
2141404993623,9cyclictest2156030-21grep08:30:282
2141404993621,8cyclictest0-21swapper/208:40:262
2141404993621,8cyclictest0-21swapper/208:40:262
214140399365,26cyclictest22-21rcuc/111:00:011
2141403993627,4cyclictest0-21swapper/112:15:161
2141403993626,5cyclictest0-21swapper/109:15:261
2141403993623,9cyclictest231ktimers/107:20:101
2141403993621,8cyclictest0-21swapper/111:35:291
214140099363,3cyclictest2173240-21latency_hist10:15:010
2141400993631,2cyclictest0-21swapper/010:10:000
2141400993630,4cyclictest0-21swapper/009:42:020
2141400993616,18cyclictest0-21swapper/010:48:180
214140499358,22cyclictest0-21swapper/210:35:242
2141404993527,6cyclictest311ktimers/208:05:172
2141404993524,7cyclictest0-21swapper/211:45:282
2141404993520,5cyclictest0-21swapper/210:15:202
2141404993519,11cyclictest0-21swapper/209:50:262
2141403993525,6cyclictest0-21swapper/108:10:281
2141403993525,5cyclictest0-21swapper/111:05:271
2141403993523,8cyclictest0-21swapper/108:45:281
2141400993528,5cyclictest0-21swapper/011:10:130
2141400993528,4cyclictest0-21swapper/011:55:180
2141400993528,4cyclictest0-21swapper/009:20:020
2141400993518,15cyclictest0-21swapper/012:15:270
214140099351,4cyclictest0-21swapper/007:10:110
2141404993425,6cyclictest311ktimers/211:05:282
2141404993419,9cyclictest2153487-21grep08:15:282
2141404993418,9cyclictest0-21swapper/207:30:012
2141404993417,10cyclictest2142691-21apt-get07:15:162
214140499341,27cyclictest2153770-21/usr/sbin/munin08:20:212
2141403993426,4cyclictest2167860-21ptp4l09:40:261
2141403993424,6cyclictest0-21swapper/111:55:211
2141403993420,10cyclictest231ktimers/107:35:111
2141403993418,10cyclictest0-21swapper/111:35:011
2141403993417,9cyclictest0-21swapper/108:25:281
214140399341,4cyclictest0-21swapper/109:05:001
2141400993428,4cyclictest20850irq/208-8000000.ethernet11:30:160
2141400993428,4cyclictest0-21swapper/009:30:140
2141400993426,4cyclictest0-21swapper/012:00:240
214140099341,2cyclictest0-21swapper/007:10:010
214140099341,2cyclictest0-21swapper/007:10:010
214140499339,15cyclictest2149444-21/usr/sbin/munin07:55:192
2141404993323,4cyclictest0-21swapper/210:00:292
2141404993322,5cyclictest0-21swapper/208:25:292
2141403993323,7cyclictest2161948-21grep09:05:281
2141403993318,11cyclictest0-21swapper/108:35:001
214140399331,2cyclictest0-21swapper/107:35:011
214140399331,25cyclictest2192942-21sshd12:10:051
2141400993313,12cyclictest131ktimers/012:15:000
214140499325,16cyclictest2176735-21latency_hist10:35:012
2141403993224,4cyclictest0-21swapper/109:25:291
2141400993226,4cyclictest20850irq/208-8000000.ethernet11:50:160
2141400993226,4cyclictest19750irq/27-20000000.i2c11:05:180
2141400993226,4cyclictest0-21swapper/007:20:140
2141400993225,5cyclictest19750irq/27-20000000.i2c07:55:150
214140099321,29cyclictest0-21swapper/008:57:460
2141400993125,4cyclictest20850irq/208-8000000.ethernet08:30:210
2141400993123,4cyclictest2175762-21kworker/u8:0-writeback10:40:010
214140499305,15cyclictest2188326-21grep11:40:272
214140499305,15cyclictest2188326-21grep11:40:272
214140499304,18cyclictest2187539-21grep11:35:302
2141403993022,4cyclictest0-21swapper/111:20:281
2141403993019,7cyclictest0-21swapper/110:45:271
2141403993014,14cyclictest2142688-21/usr/sbin/munin07:15:191
2141403992922,5cyclictest2146924-21/usr/sbin/munin07:40:261
2141403992814,8cyclictest0-21swapper/110:30:001
214140499263,13cyclictest2141450-21latency_hist07:10:012
214140499263,13cyclictest2141450-21latency_hist07:10:012
2141403992416,6cyclictest0-21swapper/107:10:011
2141403992416,6cyclictest0-21swapper/107:10:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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