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2026-06-22 - 19:57

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 Mon Jun 22, 2026 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
367778599914,15cyclictest3713854-21apt-get10:40:010
3677786998881,4cyclictest22-21rcuc/107:15:011
3677785998419,4cyclictest0-21swapper/009:20:020
3677785998419,4cyclictest0-21swapper/009:20:010
367778599811,73cyclictest3721242-21/usr/sbin/munin11:20:190
367778599811,73cyclictest3707315-21munin-node10:00:100
367778599792,69cyclictest0-21swapper/008:45:270
367778599781,69cyclictest3687582-21latency_hist08:05:010
367778599771,67cyclictest3712572-21sh10:30:210
367778599771,66cyclictest0-21swapper/010:20:100
367778599771,66cyclictest0-21swapper/010:20:100
367778599771,4cyclictest3703475-21/usr/sbin/munin09:35:270
367778599742,3cyclictest3722802-21fschecks_count11:30:210
3677785997346,21cyclictest3684884-21munin-plugin-st07:50:000
367778599731,68cyclictest3679228-21fschecks_time07:15:200
3677785997229,37cyclictest0-21swapper/008:10:300
367778599721,65cyclictest3695898-21grep08:50:290
3677789997133,26cyclictest311ktimers/210:30:012
3677786997113,18cyclictest3701313-21/usr/sbin/munin09:25:191
367778599712,6cyclictest3718904-21/usr/sbin/munin11:05:260
367778599711,6cyclictest0-21swapper/010:55:020
367778599711,4cyclictest3680963-21tune2fs07:25:220
367778599701,3cyclictest3680237-21memory07:20:250
367778599698,18cyclictest0-21swapper/012:00:010
3677785996934,32cyclictest3717328-21sendmail11:00:010
3677785996929,32cyclictest0-21swapper/008:40:020
367778599691,3cyclictest3725703-21/usr/sbin/munin11:45:260
367778599681,59cyclictest3692612-21latency_hist08:35:010
3677785996739,23cyclictest167350irq/118-8000000.ethernet-tx011:50:240
367778599672,4cyclictest3711840-21memory10:25:250
367778599662,3cyclictest3730051-21sshd12:11:060
367778599662,3cyclictest3697208-21/usr/sbin/munin09:00:220
367778599661,62cyclictest3698840-21df_inode09:10:180
367778599661,3cyclictest0-21swapper/011:10:110
3677786996519,12cyclictest3707008-21apt-get10:00:021
3677785996529,32cyclictest3701833-21unixbench_multi09:25:280
367778599652,57cyclictest3720729-21unixbench_singl11:15:270
367778599652,4cyclictest3691451-21sendmail_mailqu08:25:280
367778599644,57cyclictest0-21swapper/012:15:290
367778599642,4cyclictest3715607-21grep10:45:280
367778599641,3cyclictest3734298-21munin-run12:40:010
367778599641,33cyclictest0-21swapper/007:30:140
3677789996347,4cyclictest311ktimers/211:45:012
3677786996319,19cyclictest3679072-21/usr/sbin/munin07:15:181
3677785996334,24cyclictest3706099-21grep09:50:280
367778599631,59cyclictest0-21swapper/009:55:190
367778599631,55cyclictest3705479-21sed09:50:010
3677785996218,5cyclictest0-21swapper/009:20:280
3677785996127,31cyclictest167350irq/118-8000000.ethernet-tx012:05:390
3677785996127,31cyclictest167350irq/118-8000000.ethernet-tx012:05:380
3677785996122,10cyclictest0-21swapper/012:00:200
367778599601,4cyclictest3732277-21memory12:25:250
367778599601,3cyclictest3687695-21diskstats08:05:190
367778599593,15cyclictest3724159-21cron11:40:010
367778599592,5cyclictest3710482-21munin-run10:20:010
367778599592,21cyclictest3698448-21grep09:05:290
367778599581,55cyclictest0-21swapper/007:10:270
367778599581,4cyclictest3717889-21irqstats11:00:220
3677785995715,10cyclictest0-21swapper/007:40:250
3677785995715,10cyclictest0-21swapper/007:40:250
367778599571,31cyclictest3682687-21ssh07:35:190
367778599571,2cyclictest0-21swapper/008:20:010
367778599562,27cyclictest3733260-21/usr/sbin/munin12:30:270
367778599561,32cyclictest0-21swapper/010:05:120
367778599551,4cyclictest3696469-21phc2sys08:55:260
367778599551,29cyclictest0-21swapper/012:20:270
3677789995440,9cyclictest311ktimers/207:40:122
3677789995440,9cyclictest311ktimers/207:40:122
3677785995435,14cyclictest131ktimers/009:40:120
367778599541,3cyclictest3721847-21apt-get11:25:100
367778599541,3cyclictest3721847-21apt-get11:25:100
367778599541,3cyclictest3713854-21apt-get10:40:030
367778599541,32cyclictest0-21swapper/009:30:130
367778599541,29cyclictest0-21swapper/008:41:040
3677785995122,4cyclictest0-21swapper/010:10:120
367778599511,48cyclictest0-21swapper/008:20:280
367778599511,48cyclictest0-21swapper/008:20:280
367778599511,48cyclictest0-21swapper/007:50:260
3677789995042,5cyclictest3685724-21munin-plugin-st07:55:002
367778599501,47cyclictest0-21swapper/008:00:010
3677786994940,5cyclictest3690806-21munin-plugin-st08:25:011
3677786994940,5cyclictest3690806-21munin-plugin-st08:25:001
3677786994937,6cyclictest3733351-21grep12:30:281
367778599491,3cyclictest3724501-21ssh11:40:190
3677789994743,2cyclictest0-21swapper/210:55:012
3677789994634,9cyclictest0-21swapper/207:50:002
3677786994637,5cyclictest0-21swapper/111:00:001
3677786994633,9cyclictest3697578-21unixbench_singl09:00:291
3677789994538,5cyclictest311ktimers/212:40:022
3677789994533,8cyclictest0-21swapper/208:00:302
3677786994531,10cyclictest0-21swapper/108:40:191
3677789994431,6cyclictest3709545-21grep10:10:282
3677789994337,3cyclictest3707031-21apt-get10:00:002
3677789994332,6cyclictest3729145-21grep12:05:282
3677789994332,6cyclictest3729145-21grep12:05:282
367778699438,28cyclictest231ktimers/110:00:211
3677786994330,8cyclictest0-21swapper/109:45:281
3677789994230,7cyclictest3704427-21grep09:40:282
3677789994225,9cyclictest0-21swapper/207:35:182
3677786994223,14cyclictest231ktimers/112:25:101
3677789994129,8cyclictest30-21rcuc/210:40:142
3677786994131,6cyclictest0-21swapper/110:20:201
3677786994131,6cyclictest0-21swapper/110:20:201
3677786994126,7cyclictest0-21swapper/112:10:011
3677786994126,7cyclictest0-21swapper/112:10:001
3677786994122,13cyclictest231ktimers/108:45:111
3677789994031,5cyclictest0-21swapper/208:50:012
3677789994028,9cyclictest0-21swapper/210:40:012
3677789994021,13cyclictest311ktimers/208:50:152
3677786994030,7cyclictest3681664-21grep07:30:011
3677786994030,6cyclictest0-21swapper/111:55:001
3677786994024,12cyclictest0-21swapper/109:20:261
3677785994033,4cyclictest3677841-21cat07:10:010
3677789993930,5cyclictest0-21swapper/207:10:292
3677789993925,4cyclictest3682115-21ptp4l07:30:282
367778999392,30cyclictest0-21swapper/208:55:172
3677786993928,6cyclictest0-21swapper/112:35:261
3677786993922,10cyclictest0-21swapper/108:35:291
367778699391,31cyclictest0-21swapper/107:20:291
367778699391,2cyclictest0-21swapper/109:20:011
367778699391,2cyclictest0-21swapper/109:20:011
367778999388,21cyclictest32-21ksoftirqd/212:25:012
3677789993832,3cyclictest311ktimers/211:55:122
3677789993829,5cyclictest3712934-21grep10:30:302
3677789993829,5cyclictest3710366-21grep10:15:282
3677789993825,8cyclictest0-21swapper/207:25:012
3677789993825,5cyclictest0-21swapper/207:15:192
367778699385,3cyclictest3721537-21unixbench_multi11:20:271
3677786993830,5cyclictest0-21swapper/111:49:591
3677786993824,9cyclictest0-21swapper/111:20:011
367778699381,4cyclictest0-21swapper/111:05:011
367778699381,2cyclictest0-21swapper/107:40:011
3677789993728,5cyclictest0-21swapper/211:25:272
3677789993728,5cyclictest0-21swapper/211:25:272
3677789993726,6cyclictest3732558-21head12:25:292
3677786993729,4cyclictest0-21swapper/110:45:281
3677786993727,6cyclictest3716410-21grep10:50:281
367778699371,2cyclictest0-21swapper/110:30:001
3677789993628,5cyclictest14-21rcu_preempt08:30:202
3677789993626,7cyclictest311ktimers/211:50:132
3677789993625,5cyclictest14-21rcu_preempt09:45:282
3677789993625,4cyclictest14-21rcu_preempt11:45:272
3677789993624,8cyclictest0-21swapper/209:00:212
3677786993631,2cyclictest0-21swapper/110:35:241
3677786993620,8cyclictest0-21swapper/111:10:201
3677789993529,4cyclictest14-21rcu_preempt10:00:212
3677789993528,4cyclictest0-21swapper/211:20:262
3677789993527,4cyclictest0-21swapper/209:10:202
3677789993526,6cyclictest311ktimers/208:20:232
3677789993526,6cyclictest311ktimers/208:20:232
3677789993525,7cyclictest311ktimers/210:45:172
3677789993523,8cyclictest0-21swapper/211:35:302
3677789993523,8cyclictest0-21swapper/211:05:292
3677789993521,8cyclictest30-21rcuc/209:20:162
3677786993529,4cyclictest0-21swapper/109:30:251
3677786993525,7cyclictest0-21swapper/109:05:291
3677786993517,12cyclictest231ktimers/108:50:111
367778699351,3cyclictest0-21swapper/109:15:021
367778699351,2cyclictest0-21swapper/107:55:301
367778699351,28cyclictest0-21swapper/108:10:281
367778699351,28cyclictest0-21swapper/108:00:121
3677789993425,4cyclictest0-21swapper/208:05:202
3677789993421,7cyclictest30-21rcuc/208:10:132
3677789993420,11cyclictest311ktimers/212:15:152
367778999341,27cyclictest3708155-21/usr/sbin/munin10:05:282
367778699346,2cyclictest0-21swapper/112:00:291
3677786993420,11cyclictest0-21swapper/111:25:271
3677786993420,11cyclictest0-21swapper/111:25:271
367778699341,28cyclictest0-21swapper/111:30:271
367778699341,27cyclictest0-21swapper/110:30:181
367778699341,27cyclictest0-21swapper/110:15:261
3677789993324,7cyclictest30-21rcuc/209:35:292
3677789993324,6cyclictest30-21rcuc/208:25:162
3677789993324,6cyclictest0-21swapper/211:10:292
3677789993324,5cyclictest0-21swapper/212:30:292
3677789993323,6cyclictest30-21rcuc/211:15:112
3677786993325,4cyclictest0-21swapper/108:30:281
3677786993322,8cyclictest0-21swapper/107:30:291
367778699331,4cyclictest0-21swapper/108:30:001
367778699331,2cyclictest0-21swapper/108:10:011
3677789993225,5cyclictest311ktimers/208:15:262
3677789993225,4cyclictest3717322-21apt-get11:00:042
3677789993224,6cyclictest30-21rcuc/209:30:252
3677789993223,7cyclictest3717507-21latency_hist11:00:012
3677789993223,6cyclictest30-21rcuc/209:50:212
3677789993222,7cyclictest30-21rcuc/208:40:222
3677789993217,4cyclictest3690791-21kworker/u8:1-ext4-rsv-conversion09:10:012
367778999321,6cyclictest0-21swapper/211:35:002
3677786993223,5cyclictest0-21swapper/108:15:201
367778699321,25cyclictest0-21swapper/109:40:111
3677789993124,5cyclictest30-21rcuc/207:25:252
3677789993123,6cyclictest30-21rcuc/209:15:192
3677789993123,6cyclictest30-21rcuc/209:15:192
3677789993119,9cyclictest311ktimers/212:00:132
3677786993121,7cyclictest0-21swapper/111:55:281
367778699311,4cyclictest3703252-21irqstats09:35:221
3677789993025,3cyclictest3686094-21fschecks_time07:55:222
3677789993024,4cyclictest14-21rcu_preempt12:10:262
3677789993024,4cyclictest0-21swapper/210:21:162
3677789993024,4cyclictest0-21swapper/210:21:162
3677789993021,7cyclictest30-21rcuc/209:25:222
3677789993021,5cyclictest30-21rcuc/208:35:272
3677786993023,4cyclictest0-21swapper/110:40:281
3677786993020,7cyclictest0-21swapper/111:35:201
3677786992922,4cyclictest0-21swapper/112:20:261
3677786992919,7cyclictest0-21swapper/112:15:201
3677786992918,8cyclictest0-21swapper/109:55:001
3677786992917,7cyclictest0-21swapper/107:40:181
3677786992917,7cyclictest0-21swapper/107:40:171
3677786992915,9cyclictest0-21swapper/107:45:301
367778699291,2cyclictest0-21swapper/111:10:001
3677786992820,4cyclictest0-21swapper/111:40:281
3677786992819,7cyclictest231ktimers/112:10:241
367778699281,2cyclictest0-21swapper/110:10:011
367778699281,25cyclictest0-21swapper/107:50:591
3677786992720,5cyclictest1660-21snmpd10:13:041
3677789992616,5cyclictest0-21swapper/207:10:002
3677786992618,5cyclictest0-21swapper/108:55:291
3677786991712,3cyclictest3677746-21latency_hist07:10:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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