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2026-06-26 - 22:36

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #3

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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot3s.osadl.org (updated Fri Jun 26, 2026 12:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
107302236165,22sleep10-21swapper/107:05:451
107302236165,22sleep10-21swapper/107:05:451
109822204166,25sleep30-21swapper/307:09:013
109822204166,25sleep30-21swapper/307:09:003
107162203168,23sleep20-21swapper/207:05:342
107162203168,23sleep20-21swapper/207:05:342
108062200163,25sleep00-21swapper/007:06:450
108062200163,25sleep00-21swapper/007:06:450
2340121480,5sleep31115799cyclictest11:15:173
2187721460,3sleep01113699cyclictest12:25:170
11152999490,3cyclictest0-21swapper/212:33:342
11152996259,2cyclictest0-21swapper/209:05:462
10342590,2sleep00-21swapper/007:55:290
42592570,5sleep11114599cyclictest09:20:001
160042460,2sleep10-21swapper/111:00:021
1115799440,30cyclictest0-21swapper/307:11:443
1113699424,24cyclictest1291-21/usr/sbin/munin11:40:210
1115799411,29cyclictest0-21swapper/311:27:523
1115799410,30cyclictest0-21swapper/310:06:163
11157994027,8cyclictest0-21swapper/308:14:353
1115799400,30cyclictest0-21swapper/310:28:233
11157993927,3cyclictest0-21swapper/309:41:523
1113699393,30cyclictest18928-40dnf08:39:050
1113699391,24cyclictest10136-21tail10:45:160
11157993824,9cyclictest0-21swapper/310:34:593
11157993723,8cyclictest0-21swapper/311:56:003
1113699378,19cyclictest0-21swapper/009:30:190
1113699371,28cyclictest87350irq/126-enp1s0-09:40:170
1113699371,27cyclictest10451-21df_inode12:00:140
1113699371,21cyclictest0-21swapper/009:59:230
11152993634,1cyclictest0-21swapper/208:10:192
1113699362,24cyclictest32439-21/usr/sbin/munin09:10:150
1113699361,23cyclictest11068-21/usr/sbin/munin09:35:150
1113699360,26cyclictest0-21swapper/008:00:230
11157993522,7cyclictest0-21swapper/311:31:443
11157993517,3cyclictest0-21swapper/308:50:523
1115799351,26cyclictest0-21swapper/309:29:243
1115799351,26cyclictest0-21swapper/309:29:243
1113699355,20cyclictest827-21runrttasks08:14:230
1113699351,31cyclictest4789-21runrttasks10:34:120
1113699351,28cyclictest22841-21if_err_enp1s010:00:180
1113699351,21cyclictest25756-21unixbench_multi10:05:250
1113699350,25cyclictest0-21swapper/012:35:250
1113699343,22cyclictest3863-21/usr/sbin/munin08:05:240
1113699343,17cyclictest27082-21/usr/sbin/munin11:25:180
1113699341,30cyclictest28034-21/usr/sbin/munin09:00:170
1113699341,25cyclictest17789-21seq11:01:320
1113699341,24cyclictest21291-21/usr/sbin/munin11:10:170
1113699341,22cyclictest87350irq/126-enp1s0-07:40:250
1113699341,22cyclictest0-21swapper/012:30:140
1113699341,21cyclictest17275-21runrttasks09:48:010
1113699341,20cyclictest790-21in:imjournal08:35:010
1113699341,18cyclictest30794-21sed10:20:010
1115799331,24cyclictest0-21swapper/309:12:203
1115799331,20cyclictest0-21swapper/311:48:243
1115799331,20cyclictest0-21swapper/311:48:243
1115799331,19cyclictest0-21swapper/310:24:513
1115799330,20cyclictest0-21swapper/307:53:153
1113699331,24cyclictest799-21taskset11:37:110
11136993312,18cyclictest19057-21grep12:20:130
1113699331,18cyclictest87350irq/126-enp1s0-10:50:110
11136993310,11cyclictest28450-21awk10:15:010
1113699330,21cyclictest6154-21grep11:50:140
11157993221,7cyclictest0-21swapper/309:21:243
11157993219,8cyclictest0-21swapper/312:17:473
11157993218,7cyclictest0-21swapper/309:36:083
1115799321,19cyclictest0-21swapper/312:26:473
1115799320,22cyclictest0-21swapper/312:20:393
1115799320,20cyclictest0-21swapper/311:23:483
1113699329,20cyclictest10449-21/usr/sbin/munin08:20:250
1113699324,14cyclictest5553-21sadc09:20:210
1113699322,26cyclictest18934-21smart_sda09:50:240
1113699321,28cyclictest13887-21/usr/sbin/munin10:55:230
1113699321,19cyclictest827-21runrttasks11:46:540
1113699321,19cyclictest827-21runrttasks11:46:540
11157993118,8cyclictest0-21swapper/307:41:193
1115799311,21cyclictest0-21swapper/312:34:433
1115799311,21cyclictest0-21swapper/309:02:163
1115799311,13cyclictest0-21swapper/310:42:553
1115799310,19cyclictest0-21swapper/308:29:323
1115299311,23cyclictest0-21swapper/210:50:102
1115299311,21cyclictest0-21swapper/207:51:322
1113699316,17cyclictest17964-21mailstats12:15:240
1113699311,27cyclictest8254-21/usr/sbin/munin08:15:200
1113699311,27cyclictest8254-21/usr/sbin/munin08:15:190
1113699311,27cyclictest15484-21chrt07:15:270
1113699311,26cyclictest12609-21smart_sda07:10:220
1113699311,21cyclictest87350irq/126-enp1s0-11:33:450
1113699311,21cyclictest810-21sshd08:41:210
11136993112,16cyclictest17273-21kernelversion07:20:180
1113699311,17cyclictest0-21swapper/009:25:200
1113699311,17cyclictest0-21swapper/009:25:200
1115799301,20cyclictest0-21swapper/311:13:483
1115799301,17cyclictest0-21swapper/310:04:283
1115799301,12cyclictest0-21swapper/312:08:203
1115799301,12cyclictest0-21swapper/308:40:483
1115799300,14cyclictest0-21swapper/311:39:403
1115799300,14cyclictest0-21swapper/309:51:003
1115299301,17cyclictest0-21swapper/210:38:062
1113699309,18cyclictest27466-21cpu07:45:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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