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2026-06-08 - 23:53

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, slot #7

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 rackcslot7s.osadl.org (updated Mon Jun 08, 2026 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28573521280,3sleep33056-21PK-Backend11:35:133
1902842850,5sleep23056-21PK-Backend07:05:122
1902842850,5sleep23056-21PK-Backend07:05:122
19132428262,14sleep10-21swapper/107:06:581
19132428262,14sleep10-21swapper/107:06:571
19011527745,22sleep00-21swapper/007:05:120
19011527745,22sleep00-21swapper/007:05:110
19123927438,13sleep30-21swapper/307:05:523
19123927438,13sleep30-21swapper/307:05:513
2228582560,4sleep33056-21PK-Backend08:35:173
2824372540,4sleep23056-21PK-Backend11:25:142
1929662480,4sleep10-21swapper/107:10:221
2657912430,4sleep33056-21PK-Backend10:40:003
19173499383,22cyclictest253666-21perf10:05:002
19172999358,18cyclictest207566-21taskset07:51:471
19172999308,9cyclictest274186-21runrttasks11:01:331
19172999307,11cyclictest237473-21runrttasks09:19:141
19172999307,10cyclictest278049-21taskset11:13:211
19172999297,8cyclictest295335-21runrttasks12:02:441
19172999297,8cyclictest265754-21taskset10:39:311
19172999297,8cyclictest262212-21taskset10:28:331
19172999287,8cyclictest251761-21taskset09:58:011
19172999284,15cyclictest0-21swapper/110:10:101
2634082270,6sleep234-21ksoftirqd/210:30:202
191734992710,15cyclictest271275-21sshd10:55:122
19172999278,17cyclictest201944-21processes07:35:191
19172999278,17cyclictest201944-21processes07:35:191
19172999277,8cyclictest302560-21taskset12:23:091
19172999276,8cyclictest255262-21taskset10:08:281
191725992716,7cyclictest436-20systemd-journal07:15:010
191729992618,6cyclictest200841-21perf07:34:591
19173699258,5cyclictest306581-21sed12:35:003
19173699250,23cyclictest3056-21PK-Backend09:30:153
19173499259,14cyclictest978-21snmpd09:24:102
19173499259,14cyclictest303431-21awk12:25:152
191734992510,13cyclictest283816-21cpuspeed_turbos11:30:122
19173499250,19cyclictest0-21swapper/207:27:052
191725992517,5cyclictest255408-21basename10:10:000
191725992511,10cyclictest436-20systemd-journal07:40:000
191725992511,10cyclictest436-20systemd-journal07:39:590
191725992510,10cyclictest436-20systemd-journal12:00:010
139099250,11rtkit-daemon3056-21PK-Backend10:22:433
2583522240,9sleep234-21ksoftirqd/210:15:202
19173499249,13cyclictest286855-21sh11:40:002
191734992414,9cyclictest213295-21apt08:10:112
19172999247,6cyclictest249665-21taskset09:51:401
19172999247,3cyclictest221904-21taskset08:34:331
19172999244,8cyclictest0-21swapper/111:20:131
19172599241,4cyclictest260594-21cron10:24:590
2964752230,2chrt0-21swapper/112:05:191
191736992321,1cyclictest3056-21PK-Backend08:13:593
191736992311,10cyclictest211539-21sshd08:05:123
19173499239,12cyclictest266662-21grep10:40:182
19173499239,12cyclictest218565-21grep08:25:002
19173499237,3cyclictest277710-21timerandwakeup11:10:202
19173499236,4cyclictest978-21snmpd10:12:122
19173499236,15cyclictest0-21swapper/212:05:002
19173499235,6cyclictest250851-21cat09:55:152
19173499235,3cyclictest0-21swapper/211:53:212
191734992310,11cyclictest275385-21tail11:05:192
19173499230,5cyclictest978-21snmpd11:43:272
19173499230,21cyclictest297394-21cat12:10:022
19172999239,12cyclictest209593-21unin-run08:00:001
19172999234,7cyclictest0-21swapper/112:20:011
19172999231,3cyclictest232121-21runrttasks09:02:141
191729992312,9cyclictest286260-21python311:35:211
191729992312,8cyclictest242147-21python309:30:191
191729992311,10cyclictest243017-21apt09:35:121
2991042220,2sleep0161rcuc/012:15:000
2991042220,2sleep0161rcuc/012:15:000
191736992220,1cyclictest3056-21PK-Backend09:53:563
191736992219,2cyclictest3056-21PK-Backend10:14:043
191736992219,2cyclictest3056-21PK-Backend08:22:373
19173699220,20cyclictest3056-21PK-Backend09:56:343
19173499227,13cyclictest223024-21processes08:35:202
19173499224,6cyclictest0-21swapper/211:20:242
19173499221,7cyclictest254391-21if_err_enp2s010:05:172
19173499221,7cyclictest204373-21turbostat07:45:002
191734992216,4cyclictest234083-21perf09:10:012
191734992210,10cyclictest1095-21runrttasks08:59:152
19173499220,9cyclictest235199-21grep09:10:212
19173499220,8cyclictest248916-21awk09:50:142
19173499220,7cyclictest245417-21grep09:40:172
19173499220,7cyclictest237304-21chrt09:17:022
19173499220,19cyclictest0-21swapper/209:47:112
191729992215,5cyclictest0-21swapper/112:10:211
191729992215,5cyclictest0-21swapper/112:10:201
191729992213,7cyclictest218517-21unin-run08:25:001
191729992213,7cyclictest1-21systemd10:35:001
191729992213,6cyclictest292329-21apt11:55:121
191729992212,8cyclictest282559-21sed11:25:141
191729992212,8cyclictest266049-21/usr/sbin/munin10:40:231
191729992212,8cyclictest247966-21idleruntime-cro09:50:011
191729992212,8cyclictest245004-21cstates09:40:111
191729992212,8cyclictest227784-21/usr/sbin/munin08:50:151
191729992212,8cyclictest226627-21threads08:45:211
191729992212,8cyclictest199142-21unin-run07:30:001
191729992211,9cyclictest234839-21kernelversion09:10:161
191729992211,9cyclictest230721-21date09:00:001
191729992211,9cyclictest216767-21turbostat08:20:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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