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2026-03-22 - 15:28

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 Sun Mar 22, 2026 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2098552998611,36cyclictest0-21swapper/011:35:000
2098558997730,42cyclictest0-21swapper/312:15:293
209855499771,24cyclictest2121992-21/usr/sbin/munin09:25:161
209855299751,59cyclictest0-21swapper/010:00:110
2098552997022,28cyclictest0-21swapper/011:55:010
2098556996960,6cyclictest311ktimers/211:45:022
2098552996937,29cyclictest2132510-21meminfo10:25:230
2098552996812,23cyclictest0-21swapper/007:55:010
2098552996537,3cyclictest2114144-21/usr/sbin/munin08:35:300
2098552996525,3cyclictest2117774-21apt-get09:00:110
2098552996436,25cyclictest2099029-21/usr/sbin/munin07:10:260
2098552996355,4cyclictest0-21swapper/007:40:130
2098552996341,12cyclictest0-21swapper/009:40:110
2098552996239,16cyclictest0-21swapper/009:50:110
2098552996132,3cyclictest2140799-21df_inode11:15:170
2098552996054,4cyclictest0-21swapper/012:00:110
2098552996043,13cyclictest0-21swapper/009:25:090
2098552996038,16cyclictest0-21swapper/008:50:150
209855299595,19cyclictest2129383-21apt-get10:10:020
2098552995831,3cyclictest2131160-21munin-run10:20:000
2098552995817,4cyclictest2139968-21diskstats11:10:190
2098552995737,15cyclictest2138591-21/usr/sbin/munin11:00:250
2098552995639,14cyclictest0-21swapper/012:05:140
2098552995639,14cyclictest0-21swapper/012:05:140
2098552995637,13cyclictest0-21swapper/012:25:130
2098552995636,13cyclictest0-21swapper/011:05:110
2098552995633,3cyclictest2112698-21/usr/sbin/munin08:30:100
2098552995544,6cyclictest2112499-21munin-plugin-st08:30:010
2098552995537,13cyclictest2127421-21/usr/sbin/munin09:55:250
2098552995525,25cyclictest2147318-21latency_hist11:55:000
2098552995517,36cyclictest2145273-21memory11:40:240
2098552995514,3cyclictest2137432-21diskstats10:55:170
2098556995440,9cyclictest0-21swapper/209:45:002
2098552995442,8cyclictest2111016-21munin-node08:20:110
2098552995427,21cyclictest2109317-21apt08:10:100
2098552995426,3cyclictest2106755-21df_inode07:55:180
2098552995424,26cyclictest2103158-21latency_hist07:35:010
2098552995411,40cyclictest0-21swapper/011:45:230
2098552995342,9cyclictest2123877-21/usr/sbin/munin09:35:210
2098552995342,8cyclictest2144475-21/usr/sbin/munin11:35:260
2098552995334,14cyclictest0-21swapper/009:05:180
2098552995325,25cyclictest2101348-21http07:25:010
209855499521,15cyclictest2101341-21apt-get07:25:021
209855299527,40cyclictest0-21swapper/007:10:010
2098552995236,13cyclictest2122901-21/usr/sbin/munin09:30:170
2098552995235,14cyclictest0-21swapper/008:55:140
2098552995235,14cyclictest0-21swapper/008:55:140
2098552995235,13cyclictest0-21swapper/010:30:130
2098552995226,3cyclictest2121213-21df09:20:150
2098552995222,26cyclictest2135944-21/usr/sbin/munin10:45:280
2098552995222,26cyclictest2135944-21/usr/sbin/munin10:45:270
2098552995142,7cyclictest2151495-21sshd12:17:540
2098552995142,7cyclictest2142613-21/usr/sbin/munin11:25:230
2098552995142,7cyclictest2142613-21/usr/sbin/munin11:25:230
2098552995141,7cyclictest2105220-21/usr/sbin/munin07:45:240
2098552995139,8cyclictest0-21swapper/008:00:140
2098552995135,12cyclictest0-21swapper/010:05:130
2098552995135,11cyclictest2134913-21/usr/sbin/munin10:40:190
2098552995134,13cyclictest2141673-21/usr/sbin/munin11:20:190
2098552995133,14cyclictest2108545-21/usr/sbin/munin08:05:180
2098552995121,6cyclictest0-21swapper/007:25:230
2098554995019,15cyclictest22-21rcuc/111:55:021
209855499501,10cyclictest0-21swapper/107:40:191
2098552995036,10cyclictest0-21swapper/008:40:110
2098552995033,13cyclictest2154550-21/usr/sbin/munin12:35:250
2098552995021,3cyclictest2120484-21ssh09:15:200
2098552995011,35cyclictest0-21swapper/009:45:270
209855299500,5cyclictest2134515-21grep10:35:290
2098554994938,7cyclictest2100487-21munin-plugin-st07:20:001
2098554994935,10cyclictest0-21swapper/108:00:001
209855499491,8cyclictest0-21swapper/108:40:181
209855499491,10cyclictest0-21swapper/107:10:201
2098552994941,4cyclictest2153603-21ssh12:30:210
2098552994938,8cyclictest2115413-21/usr/sbin/munin08:45:230
2098552994936,10cyclictest2136575-21/usr/sbin/munin10:50:160
2098552994932,14cyclictest2103370-21/usr/sbin/munin07:35:150
2098556994835,9cyclictest2148131-21sendmail12:00:002
2098554994830,13cyclictest231ktimers/112:25:151
2098552994843,3cyclictest2119672-21/usr/sbin/munin09:10:220
2098552994843,3cyclictest2100176-21/usr/sbin/munin07:15:270
2098552994837,8cyclictest0-21swapper/008:15:120
2098552994837,8cyclictest0-21swapper/008:15:120
2098552994833,10cyclictest2131713-21/usr/sbin/munin10:20:260
2098554994735,7cyclictest0-21swapper/110:10:011
2098552994741,4cyclictest2151934-21/usr/sbin/munin12:20:210
2098552994734,10cyclictest1660-21snmpd12:10:030
2098556994639,4cyclictest311ktimers/210:25:022
2098556994630,10cyclictest0-21swapper/210:35:012
2098554994622,14cyclictest231ktimers/110:50:141
209855499462,19cyclictest24-21ksoftirqd/107:30:011
2098556994533,5cyclictest2132856-21munin-plugin-st10:30:002
2098556994527,11cyclictest0-21swapper/207:20:272
2098554994432,8cyclictest0-21swapper/108:25:001
2098554994428,12cyclictest231ktimers/111:05:131
2098556994333,5cyclictest2148936-21grep12:00:282
2098556994328,9cyclictest0-21swapper/207:40:292
2098554994338,2cyclictest0-21swapper/111:55:011
2098554994333,6cyclictest2142964-21unixbench_multi11:25:291
2098554994333,6cyclictest2142964-21unixbench_multi11:25:291
2098556994232,7cyclictest0-21swapper/210:05:282
2098556994230,8cyclictest14-21rcu_preempt08:45:292
2098556994225,10cyclictest311ktimers/211:50:142
2098556994223,9cyclictest0-21swapper/212:35:272
2098554994236,3cyclictest2124706-21sh09:40:211
2098556994128,8cyclictest311ktimers/209:15:142
2098554994135,4cyclictest0-21swapper/112:10:111
2098554994129,8cyclictest0-21swapper/112:15:281
2098556994024,7cyclictest0-21swapper/207:55:202
2098556994024,10cyclictest0-21swapper/207:15:052
2098556994021,11cyclictest0-21swapper/210:50:192
2098556994016,9cyclictest311ktimers/207:30:112
2098554994032,4cyclictest167450irq/126-8000000.ethernet-tx111:00:001
2098554994027,8cyclictest0-21swapper/112:40:011
2098554994026,9cyclictest0-21swapper/112:00:291
2098554994025,8cyclictest0-21swapper/109:50:281
2098556993932,5cyclictest14-21rcu_preempt09:50:252
2098556993931,6cyclictest311ktimers/211:10:182
209855699393,15cyclictest311ktimers/208:40:002
2098556993923,8cyclictest30-21rcuc/210:15:132
2098556993923,10cyclictest0-21swapper/210:15:002
2098556993910,15cyclictest2098716-21/usr/sbin/munin07:10:202
209855499395,9cyclictest2098546-21cyclictest11:40:011
2098554993927,8cyclictest0-21swapper/109:30:271
2098554993926,7cyclictest0-21swapper/111:45:281
209855499392,3cyclictest0-21swapper/110:25:011
2098556993830,4cyclictest0-21swapper/208:00:292
2098556993829,5cyclictest2135372-21grep10:40:282
2098556993829,5cyclictest2111651-21cron08:25:002
2098556993827,9cyclictest311ktimers/211:45:142
2098556993825,9cyclictest0-21swapper/211:20:242
2098556993824,9cyclictest0-21swapper/212:30:282
2098556993824,8cyclictest0-21swapper/208:30:282
2098556993821,9cyclictest0-21swapper/208:15:292
2098556993821,9cyclictest0-21swapper/208:15:292
2098554993830,5cyclictest2127599-21unixbench_multi09:55:261
2098554993825,8cyclictest0-21swapper/108:30:281
2098554993823,10cyclictest0-21swapper/110:50:011
2098554993823,10cyclictest0-21swapper/110:50:011
2098554993728,5cyclictest0-21swapper/109:05:311
2098554993723,8cyclictest0-21swapper/109:20:241
2098554993722,10cyclictest0-21swapper/109:10:271
2098556993626,7cyclictest0-21swapper/208:40:272
2098556993618,12cyclictest311ktimers/212:20:112
2098556993618,10cyclictest311ktimers/212:15:282
2098554993624,8cyclictest0-21swapper/112:30:291
2098554993620,10cyclictest0-21swapper/112:05:191
2098554993620,10cyclictest0-21swapper/112:05:191
2098554993618,13cyclictest231ktimers/112:20:131
209855699353,22cyclictest30-21rcuc/207:30:002
2098556993524,7cyclictest30-21rcuc/208:55:192
2098556993524,7cyclictest30-21rcuc/208:55:192
2098556993523,8cyclictest0-21swapper/209:00:272
2098556993521,8cyclictest0-21swapper/208:10:262
2098556993520,9cyclictest0-21swapper/211:35:202
2098556993519,10cyclictest0-21swapper/211:00:282
2098554993526,5cyclictest0-21swapper/108:15:301
2098554993526,5cyclictest0-21swapper/108:15:291
2098554993520,11cyclictest0-21swapper/108:50:291
209855499351,28cyclictest0-21swapper/111:40:181
2098556993428,3cyclictest0-21swapper/212:25:302
2098556993425,6cyclictest0-21swapper/208:50:302
2098556993425,4cyclictest0-21swapper/209:20:262
2098556993417,9cyclictest311ktimers/207:10:012
2098554993424,7cyclictest2130681-21grep10:15:201
2098554993424,6cyclictest0-21swapper/108:35:301
2098554993423,8cyclictest0-21swapper/111:20:271
2098554993421,9cyclictest0-21swapper/107:45:301
209855499341,28cyclictest2118405-21dropbear09:04:391
2098556993327,3cyclictest14-21rcu_preempt12:05:272
2098556993327,3cyclictest14-21rcu_preempt12:05:272
2098556993326,4cyclictest311ktimers/210:55:112
2098556993324,4cyclictest30-21rcuc/211:05:282
2098556993318,10cyclictest0-21swapper/211:15:192
2098556993313,10cyclictest2143273-21/usr/sbin/munin11:30:182
209855499336,5cyclictest2108969-21tr08:05:281
2098554993323,6cyclictest2109856-21grep08:10:271
2098554993323,6cyclictest0-21swapper/110:30:281
2098554993323,6cyclictest0-21swapper/110:25:281
209855499331,4cyclictest0-21swapper/108:30:011
2098556993223,6cyclictest30-21rcuc/209:35:012
2098556993223,4cyclictest0-21swapper/209:40:012
2098556993222,6cyclictest0-21swapper/210:45:332
2098556993222,6cyclictest0-21swapper/210:45:332
2098556993221,8cyclictest30-21rcuc/208:05:232
209855499325,23cyclictest22-21rcuc/107:10:011
2098554993223,5cyclictest0-21swapper/111:10:301
2098554993222,7cyclictest2125565-21sh09:45:221
2098554993220,9cyclictest0-21swapper/108:00:281
209855499321,5cyclictest0-21swapper/111:15:021
209855499321,4cyclictest0-21swapper/110:45:001
2098556993126,3cyclictest14-21rcu_preempt12:10:112
2098556993124,4cyclictest30-21rcuc/207:55:012
2098556993124,3cyclictest47-21kauditd09:10:012
2098556993116,8cyclictest30-21rcuc/209:30:012
2098554993122,6cyclictest2103310-21/usr/sbin/munin07:35:201
2098554993118,8cyclictest0-21swapper/107:30:281
2098554993117,11cyclictest0-21swapper/107:50:291
2098554993114,12cyclictest231ktimers/108:45:161
209855499311,25cyclictest0-21swapper/109:17:561
2098556993023,5cyclictest2127963-21df10:00:152
209855699302,21cyclictest0-21swapper/210:36:222
2098556993021,6cyclictest30-21rcuc/207:35:252
2098556993020,6cyclictest0-21swapper/211:25:302
2098556993020,6cyclictest0-21swapper/211:25:302
209855699301,26cyclictest2111856-21/usr/sbin/munin08:25:172
2098554993024,4cyclictest2121778-21kworker/u8:2-events_power_efficient10:00:271
2098554993023,4cyclictest0-21swapper/110:35:291
2098554993020,7cyclictest0-21swapper/109:35:161
2098556992923,4cyclictest2125964-21unixbench_singl09:45:282
2098556992919,7cyclictest2119155-21grep09:05:312
209855699291,26cyclictest0-21swapper/209:57:562
2098554992919,7cyclictest1660-21snmpd11:03:121
2098554992919,5cyclictest0-21swapper/110:10:281
2098556992820,6cyclictest0-21swapper/207:45:212
2098554992722,4cyclictest0-21swapper/111:30:251
2098554992618,6cyclictest0-21swapper/108:55:211
2098554992618,6cyclictest0-21swapper/108:55:201
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