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2026-01-05 - 02:19

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 Sun Jan 04, 2026 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
986063998511,68cyclictest1035131-21apt-get11:55:021
98606399758,29cyclictest880-21avahi-daemon07:35:011
986059997167,2cyclictest0-21swapper/008:35:180
986063996620,40cyclictest1660-21snmpd10:53:411
986063996610,20cyclictest1042270-21/usr/sbin/munin12:35:201
986063996418,37cyclictest0-21swapper/107:55:301
986063996418,37cyclictest0-21swapper/107:55:301
98606899622,32cyclictest0-21swapper/209:30:012
98606399628,10cyclictest1035131-21apt-get11:55:021
98606399616,20cyclictest982810-21kworker/u8:3+ext4-rsv-conversion07:55:011
986063996117,34cyclictest0-21swapper/107:15:011
986063996025,28cyclictest167450irq/126-8000000.ethernet-tx110:15:181
986063996025,28cyclictest167450irq/126-8000000.ethernet-tx110:15:181
98605999606,27cyclictest15-21rcuc/008:20:010
986059995927,22cyclictest20850irq/208-8000000.ethernet11:10:200
986063995816,34cyclictest0-21swapper/111:45:211
98606399575,42cyclictest0-21swapper/108:45:311
98606399575,42cyclictest0-21swapper/108:45:311
986063995728,23cyclictest0-21swapper/108:15:201
98606399561,15cyclictest1016594-21apt-get10:05:161
98606399561,13cyclictest992423-21apt-get07:45:171
98606399557,39cyclictest0-21swapper/109:20:291
986063995533,17cyclictest0-21swapper/109:55:001
986063995510,36cyclictest0-21swapper/108:40:151
98606899541,25cyclictest0-21swapper/207:25:012
98606399547,37cyclictest0-21swapper/109:20:011
98606399542,9cyclictest1039836-21/usr/sbin/munin12:20:191
986063995422,28cyclictest0-21swapper/110:25:191
98606399542,12cyclictest1020812-21apt-get10:30:181
98606399542,12cyclictest1001033-21/usr/sbin/munin08:35:291
986063995413,31cyclictest0-21swapper/109:25:201
986063995411,34cyclictest0-21swapper/110:35:241
98606399532,7cyclictest989342-21meminfo07:25:241
98606399532,10cyclictest1031203-21/usr/sbin/munin11:30:221
986063995319,26cyclictest0-21swapper/111:25:251
986063995318,27cyclictest0-21swapper/109:40:211
986063995316,28cyclictest0-21swapper/108:55:271
986063995312,33cyclictest0-21swapper/108:00:201
986063995310,33cyclictest0-21swapper/108:05:191
98606399526,37cyclictest0-21swapper/107:20:281
986063995226,21cyclictest0-21swapper/111:40:261
986063995212,31cyclictest0-21swapper/107:15:031
98606399521,12cyclictest1019135-21apt-get10:20:181
98606399521,11cyclictest1013216-21apt-get09:45:171
98606399521,10cyclictest1037469-21cut12:05:271
98606399521,10cyclictest1037469-21cut12:05:271
98606399521,10cyclictest1005593-21/usr/sbin/munin09:00:231
98606399516,36cyclictest0-21swapper/112:10:201
98606399516,36cyclictest0-21swapper/112:10:191
98606399515,37cyclictest0-21swapper/108:30:181
98606399512,10cyclictest1041984-21tail12:30:311
98606399511,8cyclictest998826-21/usr/sbin/munin08:20:261
98606399511,8cyclictest1022904-21/usr/sbin/munin10:40:271
98606399511,44cyclictest1029378-21dropbear11:20:201
98606399511,10cyclictest1026181-21/usr/sbin/munin11:00:261
98606399511,10cyclictest1026181-21/usr/sbin/munin11:00:261
986068995037,6cyclictest0-21swapper/207:15:022
98606399506,33cyclictest0-21swapper/108:50:251
98606399502,8cyclictest1026977-21/usr/sbin/munin11:05:231
98606399502,5cyclictest1006732-21sed09:05:301
98606399501,9cyclictest999776-21/usr/sbin/munin08:25:271
986063995017,28cyclictest0-21swapper/110:00:221
98605999502,4cyclictest131ktimers/009:55:020
986068994931,12cyclictest0-21swapper/210:20:312
986063994941,5cyclictest1007674-21munin-plugin-st09:15:001
98606399492,9cyclictest1023916-21/usr/sbin/munin10:45:291
98606399492,8cyclictest1032101-21/usr/sbin/munin11:35:241
98606399491,8cyclictest1025237-21/usr/sbin/munin10:55:221
98606399491,6cyclictest1010801-21grep09:30:301
98605999491,15cyclictest0-21swapper/008:10:010
98606399489,6cyclictest1036403-21lsblk12:00:211
98606399483,5cyclictest992177-21grep07:40:301
986063994824,19cyclictest0-21swapper/107:35:271
986059994836,7cyclictest1031556-21grep11:30:290
98605999481,5cyclictest0-21swapper/009:00:010
986068994736,5cyclictest1013752-21unixbench_multi09:45:302
98606399473,12cyclictest1039036-21grep12:15:231
98606399472,6cyclictest1012079-21grep09:35:301
986059994735,8cyclictest1017984-21grep10:10:290
986068994634,8cyclictest0-21swapper/211:40:012
986068994633,8cyclictest0-21swapper/211:30:002
98606399462,8cyclictest997083-21/usr/sbin/munin08:10:271
98606399462,11cyclictest1015540-21munin-plugin-st09:59:591
98606399461,9cyclictest1027558-21apt-get11:10:161
98605999466,33cyclictest1035131-21apt-get11:55:010
986059994633,5cyclictest0-21swapper/007:15:010
986059994623,20cyclictest20650irq/252-8000000.ethernet10:05:230
98605999461,2cyclictest0-21swapper/012:15:150
98606899452,22cyclictest30-21rcuc/207:45:002
98606399452,7cyclictest1040658-21df_inode12:25:171
98606399452,7cyclictest1040658-21df_inode12:25:171
98606399452,10cyclictest986067-21wc07:10:011
98606399451,11cyclictest1028911-21/usr/sbin/munin11:15:281
98606399451,11cyclictest1028911-21/usr/sbin/munin11:15:281
986059994536,5cyclictest0-21swapper/011:20:290
986059994531,9cyclictest1008729-21latency_hist09:20:000
98605999451,3cyclictest0-21swapper/009:45:010
986068994431,9cyclictest0-21swapper/207:35:002
98606399441,10cyclictest1017432-21apt-get10:10:121
98605999441,8cyclictest1007104-21df_inode09:10:170
986068994331,9cyclictest0-21swapper/210:34:592
986068994329,8cyclictest0-21swapper/207:40:002
98606899432,8cyclictest0-21swapper/207:30:022
98606899431,33cyclictest1030060-21gpg-connect-age11:25:012
98606899431,20cyclictest0-21swapper/210:15:012
986059994336,5cyclictest990525-21grep07:35:000
986059994334,5cyclictest167350irq/118-8000000.ethernet-tx008:25:240
986068994233,6cyclictest1014640-21grep09:50:302
986068994230,8cyclictest1026487-21grep11:00:312
986068994230,8cyclictest1026487-21grep11:00:312
986068994230,8cyclictest0-21swapper/210:55:002
986059994234,4cyclictest0-21swapper/009:25:290
986068994132,5cyclictest0-21swapper/212:30:012
986068994132,5cyclictest0-21swapper/212:30:012
986068994130,7cyclictest0-21swapper/212:15:002
986068994130,7cyclictest0-21swapper/212:15:002
98606899411,2cyclictest0-21swapper/212:40:012
986059994134,3cyclictest0-21swapper/007:10:000
986059994131,5cyclictest0-21swapper/008:30:270
986059994129,8cyclictest0-21swapper/011:40:020
98605999412,4cyclictest1018920-21munin-run10:20:000
98605999412,4cyclictest1018920-21munin-run10:19:590
986068994032,5cyclictest0-21swapper/208:39:592
986068994031,5cyclictest1006835-21munin-plugin-st09:10:002
986068994031,4cyclictest1028922-21unixbench_multi11:15:282
986068994031,4cyclictest1028922-21unixbench_multi11:15:282
986068994030,7cyclictest0-21swapper/209:00:302
986068994026,9cyclictest0-21swapper/208:40:272
98606899401,4cyclictest0-21swapper/211:55:012
98606899401,19cyclictest0-21swapper/208:25:012
986059994036,2cyclictest0-21swapper/010:20:280
986059994031,5cyclictest0-21swapper/007:45:300
986059994028,7cyclictest0-21swapper/007:55:310
986059994028,7cyclictest0-21swapper/007:55:310
986059994024,11cyclictest131ktimers/007:40:120
986059994018,20cyclictest0-21swapper/007:15:040
98605999401,5cyclictest0-21swapper/008:50:020
98605999401,3cyclictest0-21swapper/012:25:270
98605999401,3cyclictest0-21swapper/012:25:260
98606899397,20cyclictest1039752-21/usr/sbin/munin12:20:192
986068993927,9cyclictest0-21swapper/208:15:312
986068993925,9cyclictest1041970-21grep12:30:312
986059993929,5cyclictest0-21swapper/011:45:270
98605999391,29cyclictest0-21swapper/011:05:010
98605999391,29cyclictest0-21swapper/011:05:000
986068993825,9cyclictest0-21swapper/208:10:282
986059993830,4cyclictest20850irq/208-8000000.ethernet12:10:270
986059993830,4cyclictest20850irq/208-8000000.ethernet12:10:270
986059993829,6cyclictest0-21swapper/007:25:210
986059993827,7cyclictest1037641-21sshd12:05:290
986059993827,7cyclictest1037641-21sshd12:05:290
986059993826,7cyclictest1006539-21tail09:05:260
986059993825,7cyclictest131ktimers/010:40:300
986068993729,4cyclictest0-21swapper/211:40:202
98606899371,28cyclictest0-21swapper/207:20:012
986059993730,4cyclictest20850irq/208-8000000.ethernet07:35:300
986059993729,5cyclictest0-21swapper/011:55:320
986059993728,5cyclictest0-21swapper/008:00:260
98605999371,4cyclictest0-21swapper/008:55:110
98605999371,3cyclictest1028514-21grep11:15:200
98605999371,3cyclictest1028514-21grep11:15:200
98605999370,3cyclictest1032954-21ssh11:40:190
986068993630,3cyclictest0-21swapper/210:20:012
986068993630,3cyclictest0-21swapper/210:20:012
986068993628,4cyclictest0-21swapper/209:10:172
986068993624,9cyclictest0-21swapper/212:00:282
986068993623,9cyclictest0-21swapper/209:25:012
986068993621,9cyclictest0-21swapper/210:00:272
986059993627,5cyclictest0-21swapper/010:00:270
98605999362,6cyclictest1022355-21grep10:40:000
986059993625,6cyclictest0-21swapper/012:30:230
986059993620,9cyclictest0-21swapper/009:25:010
98605999361,3cyclictest0-21swapper/008:41:020
98605999361,33cyclictest0-21swapper/010:59:200
986068993529,4cyclictest1015529-21cron10:00:002
986068993527,5cyclictest1039538-21cat12:20:002
986068993524,6cyclictest0-21swapper/210:45:302
98606899351,2cyclictest0-21swapper/211:50:012
986059993530,3cyclictest20850irq/208-8000000.ethernet09:35:190
986059993529,4cyclictest20850irq/208-8000000.ethernet12:35:260
986059993529,4cyclictest20850irq/208-8000000.ethernet10:45:170
986059993524,7cyclictest0-21swapper/010:50:300
986059993524,7cyclictest0-21swapper/007:20:300
986059993514,4cyclictest1000494-1kworker/0:0H+kblockd12:25:010
98605999351,28cyclictest131ktimers/008:45:310
98605999351,28cyclictest131ktimers/008:45:310
986068993426,4cyclictest0-21swapper/209:35:002
986068993426,4cyclictest0-21swapper/208:30:192
986068993425,4cyclictest0-21swapper/212:10:012
986068993425,4cyclictest0-21swapper/212:10:002
986059993428,4cyclictest20850irq/208-8000000.ethernet11:25:020
986059993428,3cyclictest167350irq/118-8000000.ethernet-tx008:10:190
986059993428,3cyclictest0-21swapper/010:30:000
986059993425,7cyclictest1015500-21unixbench_singl09:55:300
986059993425,6cyclictest0-21swapper/011:05:290
986059993416,16cyclictest0-21swapper/008:20:210
986068993325,5cyclictest0-21swapper/208:50:212
986068993322,7cyclictest1028142-21grep11:10:302
986068993321,9cyclictest0-21swapper/207:49:592
986059993326,4cyclictest167350irq/118-8000000.ethernet-tx009:45:300
98605999331,28cyclictest993537-21tr07:50:220
986068993225,4cyclictest0-21swapper/209:20:022
986068993224,5cyclictest0-21swapper/210:35:212
986068993224,5cyclictest0-21swapper/210:25:182
986068993223,5cyclictest1012159-21apt09:40:002
986068993211,5cyclictest832-21systemd-network08:02:562
98605999321,5cyclictest1011304-21sendmail-mta09:32:350
986068993123,6cyclictest1035478-21df11:55:192
986068993121,5cyclictest0-21swapper/208:10:012
98606899311,28cyclictest1025601-21grep10:55:292
986059993124,3cyclictest0-21swapper/010:30:320
98605999311,4cyclictest0-21swapper/012:02:110
986068993022,3cyclictest0-21swapper/211:05:292
986068993020,6cyclictest0-21swapper/208:55:292
986068993012,16cyclictest167550irq/134-8000000.ethernet-tx207:50:152
986068992920,5cyclictest0-21swapper/209:40:202
986068992920,5cyclictest0-21swapper/207:55:232
986068992920,5cyclictest0-21swapper/207:55:232
986068992821,3cyclictest0-21swapper/208:45:292
986068992821,3cyclictest0-21swapper/208:45:292
986068992818,4cyclictest0-21swapper/210:05:242
986068992618,6cyclictest999414-21df08:25:172
986068992615,7cyclictest0-21swapper/211:30:292
986068992520,3cyclictest986017-21latency_hist07:10:012
986068992519,4cyclictest1023017-21sshd10:40:292
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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