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2026-03-31 - 09:33

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 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 Tue Mar 31, 2026 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
120855099812,70cyclictest0-21swapper/023:30:110
1208552997871,5cyclictest0-21swapper/100:20:021
1208552997871,5cyclictest0-21swapper/100:20:021
1208555997772,2cyclictest0-21swapper/221:05:012
1208555997772,2cyclictest0-21swapper/221:05:012
120855699757,51cyclictest1213219-21/usr/sbin/munin19:35:193
1208550997566,6cyclictest15-21rcuc/021:05:010
1208550997566,6cyclictest15-21rcuc/021:05:010
120855599658,20cyclictest30-21rcuc/223:45:012
1208555996550,10cyclictest311ktimers/221:25:122
1208550996448,8cyclictest14-21rcu_preempt00:20:010
1208550996448,8cyclictest14-21rcu_preempt00:20:010
1208550996214,14cyclictest1256617-21apt-get23:50:020
120855599605,33cyclictest30-21rcuc/220:45:022
120855299609,31cyclictest14-21rcu_preempt20:25:011
120855299609,31cyclictest14-21rcu_preempt20:25:011
1208555995942,12cyclictest311ktimers/223:45:132
120855099585,29cyclictest15-21rcuc/023:45:020
1208550995851,4cyclictest0-21swapper/019:40:150
1208550995611,9cyclictest0-21swapper/020:25:010
1208550995611,9cyclictest0-21swapper/020:25:010
1208555995444,5cyclictest1243768-21munin-run22:35:002
1208555995444,5cyclictest1243768-21munin-run22:35:002
1208550995128,20cyclictest19750irq/27-20000000.i2c00:40:000
120855099511,4cyclictest0-21swapper/022:20:110
1208555994941,4cyclictest14-21rcu_preempt21:55:192
1208552994941,5cyclictest1250524-21munin-plugin-st23:15:001
1208552994941,5cyclictest1250524-21munin-plugin-st23:15:001
1208552994910,26cyclictest1255789-21cat23:45:011
1208550994942,4cyclictest167350irq/118-8000000.ethernet-tx021:15:180
1208555994835,8cyclictest0-21swapper/222:55:292
1208552994836,8cyclictest0-21swapper/120:19:591
1208550994840,4cyclictest167350irq/118-8000000.ethernet-tx020:10:160
120855099482,44cyclictest0-21swapper/023:35:240
1208555994726,18cyclictest311ktimers/219:20:132
1208550994739,4cyclictest167350irq/118-8000000.ethernet-tx021:25:230
1208555994612,2cyclictest0-21swapper/220:35:012
1208552994632,9cyclictest1216387-21unixbench_multi19:50:271
1208550994629,14cyclictest167350irq/118-8000000.ethernet-tx021:20:280
1208552994525,11cyclictest0-21swapper/122:40:281
1208550994536,6cyclictest0-21swapper/020:30:000
120855099451,42cyclictest0-21swapper/000:10:230
120855099451,41cyclictest1226258-21sh20:50:230
120855099451,41cyclictest1226258-21sh20:50:220
1208555994434,6cyclictest1254662-21grep23:35:292
1208555994431,10cyclictest311ktimers/222:00:122
1208552994412,23cyclictest1229533-21/usr/sbin/munin21:10:191
120855099441,40cyclictest1263452-21unixbench_multi00:25:290
120855599435,18cyclictest0-21swapper/219:30:012
1208555994334,5cyclictest0-21swapper/221:05:312
1208555994328,11cyclictest311ktimers/200:25:132
1208552994330,9cyclictest0-21swapper/123:40:021
1208550994324,15cyclictest1250106-21/usr/sbin/munin23:10:240
1208550994324,15cyclictest1250106-21/usr/sbin/munin23:10:230
120855099432,39cyclictest0-21swapper/022:10:000
1208555994234,5cyclictest1216488-21munin-plugin-st19:55:002
1208555994233,5cyclictest0-21swapper/200:10:292
1208555994231,7cyclictest0-21swapper/200:00:282
1208550994235,4cyclictest167350irq/118-8000000.ethernet-tx021:50:120
1208550994234,4cyclictest1218542-21lsblk20:05:200
1208550994228,10cyclictest0-21swapper/000:05:310
120855099422,37cyclictest1211540-21/usr/sbin/munin19:25:250
120855099421,38cyclictest0-21swapper/023:45:170
1208555994128,8cyclictest0-21swapper/219:55:292
1208555994121,13cyclictest311ktimers/223:50:122
1208552994131,7cyclictest0-21swapper/123:15:281
1208552994130,6cyclictest0-21swapper/119:20:001
1208552994128,8cyclictest0-21swapper/121:35:281
1208552994123,9cyclictest0-21swapper/120:10:281
1208550994129,5cyclictest0-21swapper/019:30:270
1208550994129,5cyclictest0-21swapper/019:30:260
120855099411,5cyclictest0-21swapper/019:15:020
120855099411,4cyclictest1239822-21df_inode22:10:200
1208555994032,5cyclictest1226635-21grep20:50:292
1208555994032,5cyclictest1226635-21grep20:50:292
1208552994027,9cyclictest0-21swapper/121:45:291
1208552994026,10cyclictest1265242-21sh00:39:591
1208552994025,8cyclictest0-21swapper/120:00:001
1208552994022,8cyclictest0-21swapper/100:25:281
1208552994020,12cyclictest0-21swapper/121:00:281
1208552994020,12cyclictest0-21swapper/121:00:281
120855299401,33cyclictest1225225-21/usr/sbin/munin20:45:211
1208550994033,5cyclictest0-21swapper/020:45:110
1208550994033,4cyclictest167350irq/118-8000000.ethernet-tx021:10:150
1208550994028,8cyclictest0-21swapper/022:50:290
1208550994026,9cyclictest0-21swapper/021:40:290
120855099401,4cyclictest1246304-21munin-run22:50:000
120855099401,37cyclictest0-21swapper/023:05:260
120855099401,37cyclictest0-21swapper/022:01:270
120855099401,35cyclictest0-21swapper/019:35:010
120855599398,25cyclictest30-21rcuc/223:20:172
1208555993932,3cyclictest1244601-21cron22:40:002
1208555993930,5cyclictest0-21swapper/222:20:272
1208555993929,6cyclictest1251291-21grep23:15:292
1208555993927,8cyclictest0-21swapper/220:40:272
1208555993923,6cyclictest0-21swapper/220:25:022
1208552993930,5cyclictest1240332-21grep22:10:321
1208552993928,8cyclictest0-21swapper/121:50:281
1208552993926,9cyclictest0-21swapper/121:20:001
1208552993924,9cyclictest0-21swapper/100:05:001
1208552993924,10cyclictest0-21swapper/123:05:291
120855299392,2cyclictest0-21swapper/123:25:021
1208552993910,3cyclictest0-21swapper/123:00:241
1208550993933,3cyclictest1264079-21phc2sys00:30:250
1208550993932,4cyclictest167350irq/118-8000000.ethernet-tx000:20:180
1208550993931,5cyclictest1253063-21munin-plugin-st23:30:000
1208550993927,8cyclictest0-21swapper/022:15:290
1208550993927,8cyclictest0-21swapper/021:30:290
120855099392,3cyclictest1242371-21forks22:25:200
120855099391,4cyclictest0-21swapper/000:00:000
120855099391,3cyclictest0-21swapper/021:35:040
120855099391,36cyclictest0-21swapper/019:55:230
1208555993828,7cyclictest1245357-21grep22:40:292
1208555993828,5cyclictest0-21swapper/220:15:282
120855599381,4cyclictest0-21swapper/221:25:012
1208552993829,5cyclictest1262599-21kworker/u8:2-ext4-rsv-conversion00:25:011
1208552993825,8cyclictest1247932-21grep22:55:301
1208552993825,8cyclictest0-21swapper/122:05:301
1208552993824,9cyclictest0-21swapper/120:30:281
1208552993823,8cyclictest0-21swapper/121:25:291
1208552993823,10cyclictest0-21swapper/120:25:281
1208552993821,11cyclictest0-21swapper/122:20:271
1208550993832,4cyclictest167350irq/118-8000000.ethernet-tx019:20:200
1208550993831,4cyclictest0-21swapper/022:55:290
1208550993831,4cyclictest0-21swapper/021:45:180
1208550993826,7cyclictest0-21swapper/021:55:300
1208550993823,10cyclictest0-21swapper/021:00:020
120855099381,5cyclictest0-21swapper/020:20:010
120855099381,3cyclictest1250818-21dropbear23:15:190
120855099381,35cyclictest0-21swapper/022:30:140
120855099381,35cyclictest0-21swapper/022:30:130
120855099381,35cyclictest0-21swapper/020:40:140
120855099381,2cyclictest0-21swapper/019:45:220
1208550993810,26cyclictest15-21rcuc/020:30:220
1208555993726,6cyclictest1246207-21grep22:45:282
1208555993726,6cyclictest1213804-21grep19:35:282
1208555993725,8cyclictest0-21swapper/221:45:282
1208555993725,7cyclictest1218986-21grep20:05:282
1208555993725,7cyclictest0-21swapper/222:25:272
120855299378,25cyclictest0-21swapper/119:40:221
1208552993725,7cyclictest0-21swapper/123:20:251
1208552993723,8cyclictest0-21swapper/122:30:271
1208552993723,8cyclictest0-21swapper/122:30:271
1208552993722,8cyclictest0-21swapper/123:30:301
1208552993722,10cyclictest0-21swapper/100:30:271
120855299371,29cyclictest1213219-21/usr/sbin/munin19:35:191
1208550993724,8cyclictest0-21swapper/022:40:280
1208550993723,11cyclictest0-21swapper/021:05:300
120855099371,34cyclictest0-21swapper/022:35:160
120855099371,34cyclictest0-21swapper/019:10:150
120855099371,32cyclictest0-21swapper/019:10:010
1208555993626,6cyclictest0-21swapper/200:15:172
1208555993626,6cyclictest0-21swapper/200:15:162
1208555993625,7cyclictest0-21swapper/200:20:282
1208555993624,8cyclictest1230942-21grep21:15:302
1208552993627,2cyclictest0-21swapper/121:30:021
1208552993626,5cyclictest0-21swapper/119:25:011
1208552993625,7cyclictest1260841-21unixbench_multi00:10:281
1208552993624,8cyclictest0-21swapper/122:50:301
1208552993624,8cyclictest0-21swapper/121:05:301
1208552993623,8cyclictest0-21swapper/122:45:271
1208552993622,10cyclictest1218124-21unixbench_singl20:00:291
120855099362,9cyclictest1248297-21ssh23:00:190
1208550993629,5cyclictest0-21swapper/000:00:270
1208550993626,6cyclictest0-21swapper/019:50:270
1208550993624,8cyclictest0-21swapper/023:20:250
1208555993525,5cyclictest0-21swapper/200:10:022
1208555993524,7cyclictest1215478-21grep19:45:302
1208555993524,7cyclictest0-21swapper/221:35:292
1208555993522,8cyclictest0-21swapper/221:40:292
1208552993524,6cyclictest0-21swapper/122:15:301
120855299351,26cyclictest1238419-21phc2sys-jitter22:00:261
120855099351,32cyclictest0-21swapper/020:36:520
1208555993425,6cyclictest1265154-21grep00:35:292
1208555993423,6cyclictest0-21swapper/220:35:262
1208555993421,8cyclictest0-21swapper/219:10:282
120855299343,4cyclictest1224631-21if_eth120:40:241
1208552993423,7cyclictest0-21swapper/120:35:291
120855299341,27cyclictest0-21swapper/100:05:221
1208555993324,5cyclictest0-21swapper/222:15:222
1208555993323,7cyclictest1210363-21grep19:15:282
1208555993322,8cyclictest311ktimers/223:10:002
1208555993322,8cyclictest1226904-21/usr/sbin/munin20:55:212
1208555993322,7cyclictest0-21swapper/221:30:262
120855599331,29cyclictest1252421-21/usr/sbin/munin23:25:292
1208552993324,5cyclictest0-21swapper/121:55:271
120855299332,29cyclictest0-21swapper/123:45:281
1208552993320,9cyclictest0-21swapper/122:25:271
1208550993323,7cyclictest0-21swapper/020:00:280
120855599329,18cyclictest30-21rcuc/221:10:132
1208555993224,4cyclictest0-21swapper/220:25:012
1208555993222,5cyclictest0-21swapper/223:00:252
1208552993221,7cyclictest0-21swapper/121:40:291
1208552993221,6cyclictest0-21swapper/123:55:231
1208552993220,8cyclictest0-21swapper/119:30:291
1208552993220,8cyclictest0-21swapper/119:30:291
1208552993220,8cyclictest0-21swapper/119:25:291
120855599316,5cyclictest8321systemd-network20:00:332
1208555993123,5cyclictest0-21swapper/223:10:182
1208555993123,5cyclictest0-21swapper/223:10:182
1208555993123,4cyclictest0-21swapper/223:55:312
1208555993122,4cyclictest0-21swapper/222:15:002
1208555993121,6cyclictest1219753-21grep20:10:282
1208555993113,14cyclictest1246502-21/usr/sbin/munin22:50:192
1208552993123,5cyclictest0-21swapper/120:50:141
1208552993123,5cyclictest0-21swapper/120:50:141
1208552993120,7cyclictest0-21swapper/120:05:281
1208552993119,7cyclictest0-21swapper/119:10:281
1208555993022,4cyclictest0-21swapper/222:05:292
1208555993020,5cyclictest0-21swapper/219:40:262
1208555993018,9cyclictest0-21swapper/221:50:272
1208552993023,4cyclictest0-21swapper/121:20:271
1208552993022,5cyclictest0-21swapper/119:45:291
1208555992919,7cyclictest1660-21snmpd20:25:262
120855599291,4cyclictest0-21swapper/200:30:152
1208552992917,8cyclictest0-21swapper/122:35:281
120855299291,2cyclictest0-21swapper/119:10:011
1208555992823,3cyclictest0-21swapper/219:30:292
1208555992823,3cyclictest0-21swapper/219:30:292
1208552992817,8cyclictest0-21swapper/123:50:271
120855299281,5cyclictest0-21swapper/120:55:011
1208555992716,7cyclictest1253820-21grep23:30:292
1208555992212,6cyclictest0-21swapper/219:10:022
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