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2026-08-24 - 04:05

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 all highest latencies:
System rackeslot6s.osadl.org (updated Mon Aug 24, 2026 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40743991177,14cyclictest48588-21apt-get19:55:021
40741998450,18cyclictest15-21rcuc/000:05:020
40746996053,5cyclictest311ktimers/222:25:172
4074199591,53cyclictest0-21swapper/021:35:120
4074199571,3cyclictest0-21swapper/020:50:200
40741995712,3cyclictest0-21swapper/019:45:190
40746995339,9cyclictest56280-21apt20:40:002
40743995240,9cyclictest1283-21cron22:25:001
40741995235,10cyclictest0-21swapper/021:40:270
40741995213,17cyclictest14-21rcu_preempt20:45:010
40741995213,17cyclictest14-21rcu_preempt20:45:010
40741995043,4cyclictest167350irq/118-8000000.ethernet-tx023:55:230
4074699498,28cyclictest30-21rcuc/222:20:012
40741994942,3cyclictest167350irq/118-8000000.ethernet-tx022:45:300
40741994942,3cyclictest167350irq/118-8000000.ethernet-tx022:45:290
4074199491,12cyclictest0-21swapper/000:20:190
4074399487,13cyclictest1660-21snmpd19:35:021
40743994842,3cyclictest97107-21apt-get00:40:001
40741994840,4cyclictest20650irq/252-8000000.ethernet21:15:280
40741994840,4cyclictest167350irq/118-8000000.ethernet-tx020:30:170
40746994737,7cyclictest61357-21munin-plugin-st21:10:002
40746994736,7cyclictest0-21swapper/220:40:292
40746994736,7cyclictest0-21swapper/220:40:282
4074199476,9cyclictest20850irq/208-8000000.ethernet23:55:010
40741994740,4cyclictest167350irq/118-8000000.ethernet-tx020:05:010
40741994740,4cyclictest167350irq/118-8000000.ethernet-tx020:05:010
40741994739,4cyclictest20650irq/252-8000000.ethernet20:55:290
4074199471,40cyclictest0-21swapper/019:55:050
40743994638,5cyclictest51221-21munin-plugin-st20:09:591
4074199461,2cyclictest0-21swapper/022:40:020
40743994537,5cyclictest69788-21sh21:59:591
40741994539,4cyclictest87626-21munin-plugin-st23:45:000
4074199445,10cyclictest90994-21apt-get00:05:010
40741994432,9cyclictest80021-21sendmail23:00:000
40741994432,10cyclictest131ktimers/019:50:150
40741994417,23cyclictest0-21swapper/000:10:310
4074199441,40cyclictest51678-21/usr/sbin/munin20:10:220
4074199441,2cyclictest0-21swapper/020:40:000
40746994331,8cyclictest76641-21sendmail22:40:002
4074199435,2cyclictest0-21swapper/023:15:010
40741994317,24cyclictest60954-21if_eth021:05:220
40746994226,11cyclictest311ktimers/221:30:172
40746994226,11cyclictest0-21swapper/219:50:202
40743994233,5cyclictest42687-21sendmail19:20:001
40743994232,6cyclictest0-21swapper/100:10:301
40743994221,13cyclictest0-21swapper/119:35:211
40741994233,7cyclictest68950-21munin-plugin-st21:55:000
40741994231,7cyclictest0-21swapper/020:05:290
40741994230,8cyclictest0-21swapper/021:20:290
40741994228,11cyclictest0-21swapper/000:15:290
40741994228,11cyclictest0-21swapper/000:15:280
4074199422,4cyclictest88461-21munin-run23:50:000
4074199421,5cyclictest96248-21munin-run00:35:000
4074199421,5cyclictest96248-21munin-run00:35:000
4074199421,5cyclictest72732-21ssh22:15:190
4074199421,2cyclictest0-21swapper/023:25:010
40746994133,5cyclictest54498-21grep20:25:282
40746994132,4cyclictest0-21swapper/220:50:312
40746994126,12cyclictest311ktimers/219:45:122
40743994128,9cyclictest53670-21grep20:20:291
40741994129,7cyclictest0-21swapper/021:45:280
40741994124,15cyclictest0-21swapper/023:25:260
40741994124,15cyclictest0-21swapper/023:25:260
40741994123,16cyclictest131ktimers/000:35:130
40746994032,4cyclictest0-21swapper/200:15:302
40746994032,4cyclictest0-21swapper/200:15:292
40746994029,8cyclictest0-21swapper/223:40:012
40746994029,6cyclictest57920-21grep20:45:302
40746994026,9cyclictest0-21swapper/223:15:282
4074699401,5cyclictest0-21swapper/222:10:012
4074699401,5cyclictest0-21swapper/222:10:012
40746994011,14cyclictest30-21rcuc/221:25:012
4074399403,5cyclictest52836-21grep20:15:311
40743994031,4cyclictest67270-21munin-plugin-st21:44:591
40743994029,6cyclictest0-21swapper/100:30:181
40743994029,6cyclictest0-21swapper/100:30:181
40743994026,9cyclictest0-21swapper/121:35:291
4074399402,3cyclictest0-21swapper/121:55:021
40741994034,3cyclictest0-21swapper/019:29:030
40741994034,3cyclictest0-21swapper/019:29:030
40741994033,4cyclictest0-21swapper/021:30:210
40741994032,5cyclictest0-21swapper/020:20:250
40741994029,8cyclictest0-21swapper/022:20:290
40741994029,8cyclictest0-21swapper/022:00:010
40741994029,7cyclictest15-21rcuc/022:10:120
40741994027,10cyclictest0-21swapper/022:30:270
4074199401,2cyclictest0-21swapper/020:20:010
40746993930,5cyclictest0-21swapper/223:50:292
40746993929,7cyclictest0-21swapper/222:20:302
40746993928,6cyclictest0-21swapper/200:40:002
40746993927,9cyclictest0-21swapper/219:20:272
40746993925,10cyclictest311ktimers/222:45:152
40746993925,10cyclictest311ktimers/222:45:152
40746993921,10cyclictest0-21swapper/221:00:012
40746993910,7cyclictest30-21rcuc/222:45:012
40743993932,5cyclictest93616-21sendmail00:20:001
40743993932,5cyclictest93616-21sendmail00:20:001
40743993927,8cyclictest0-21swapper/100:00:281
40743993910,20cyclictest55639-21/usr/sbin/munin20:35:191
40741993932,4cyclictest41539-21cron19:15:000
40741993930,5cyclictest0-21swapper/023:00:290
40741993929,6cyclictest0-21swapper/000:25:300
40741993927,8cyclictest0-21swapper/019:30:290
4074199392,34cyclictest45955-21unixbench_multi19:35:290
4074199391,4cyclictest46277-21dpkg19:40:120
40746993824,10cyclictest0-21swapper/200:00:302
40746993823,8cyclictest0-21swapper/219:45:002
40741993828,7cyclictest0-21swapper/023:05:280
40741993828,6cyclictest0-21swapper/021:25:290
40741993826,8cyclictest0-21swapper/023:35:290
40741993825,8cyclictest0-21swapper/019:15:270
40741993825,10cyclictest0-21swapper/023:20:000
40746993729,5cyclictest0-21swapper/200:20:302
40746993726,6cyclictest62159-21grep21:10:282
40746993725,9cyclictest0-21swapper/219:10:262
40746993723,9cyclictest0-21swapper/200:30:012
40746993717,11cyclictest42029-21/usr/sbin/munin19:15:182
40743993728,4cyclictest0-21swapper/122:05:181
40743993728,4cyclictest0-21swapper/122:05:181
40743993727,6cyclictest0-21swapper/120:00:201
40743993727,6cyclictest0-21swapper/120:00:201
4074399371,33cyclictest72735-21sh22:15:191
40741993726,6cyclictest0-21swapper/023:30:310
40741993721,14cyclictest0-21swapper/022:43:050
4074199371,34cyclictest0-21swapper/022:25:180
4074199371,34cyclictest0-21swapper/021:00:160
40746993629,4cyclictest0-21swapper/200:00:002
40746993628,5cyclictest85080-21cron23:30:002
40746993628,5cyclictest85080-21cron23:30:002
40746993628,5cyclictest0-21swapper/223:00:282
40746993622,9cyclictest0-21swapper/222:00:012
40746993622,8cyclictest0-21swapper/221:40:282
4074399363,4cyclictest1660-21snmpd22:35:291
40743993629,3cyclictest0-21swapper/100:20:191
40743993628,4cyclictest167450irq/126-8000000.ethernet-tx121:00:191
40743993627,5cyclictest0-21swapper/123:15:271
40743993624,8cyclictest0-21swapper/119:20:281
40743993623,10cyclictest0-21swapper/120:50:281
4074399361,29cyclictest79368-21/usr/sbin/munin22:55:211
40741993630,4cyclictest20850irq/208-8000000.ethernet20:45:180
40741993629,4cyclictest20650irq/252-8000000.ethernet20:25:210
4074199361,3cyclictest0-21swapper/019:20:120
40746993528,4cyclictest0-21swapper/222:55:002
40746993527,5cyclictest274-21systemd-journal21:15:172
40746993526,4cyclictest0-21swapper/222:30:272
40746993522,8cyclictest0-21swapper/221:50:282
40746993522,10cyclictest311ktimers/223:45:122
40743993527,5cyclictest90058-21unixbench_multi23:55:301
40743993522,9cyclictest0-21swapper/120:25:201
40741993526,6cyclictest62104-21grep21:10:290
4074199351,32cyclictest0-21swapper/022:52:220
4074199351,31cyclictest69784-21apt-get22:00:050
40746993420,12cyclictest0-21swapper/221:05:002
4074399344,15cyclictest64930-21/usr/sbin/munin21:30:191
40743993426,4cyclictest0-21swapper/120:10:191
40743993425,4cyclictest0-21swapper/122:40:201
40743993422,8cyclictest0-21swapper/123:50:281
4074399341,29cyclictest84979-21unixbench_multi23:25:261
4074399341,29cyclictest84979-21unixbench_multi23:25:261
40746993325,5cyclictest45963-21grep19:35:292
40746993322,8cyclictest86984-21/usr/sbin/munin23:40:142
40746993321,8cyclictest311ktimers/222:55:172
40746993316,8cyclictest0-21swapper/200:15:002
4074699331,26cyclictest0-21swapper/223:10:152
40743993325,5cyclictest0-21swapper/123:10:281
40743993325,4cyclictest0-21swapper/122:10:281
40743993321,8cyclictest0-21swapper/123:40:181
40741993323,7cyclictest0-21swapper/022:05:300
40741993323,7cyclictest0-21swapper/022:05:290
40746993224,4cyclictest0-21swapper/220:10:272
40746993224,4cyclictest0-21swapper/220:00:282
40746993224,4cyclictest0-21swapper/220:00:272
40746993222,7cyclictest85285-21/usr/sbin/munin23:30:202
40746993221,7cyclictest0-21swapper/220:00:012
40746993220,8cyclictest30-21rcuc/221:45:192
40746993218,7cyclictest30-21rcuc/221:20:132
4074699321,25cyclictest0-21swapper/221:35:172
4074399325,14cyclictest60716-21/usr/sbin/munin21:05:181
40743993224,6cyclictest61553-21/usr/sbin/munin21:10:251
40743993223,7cyclictest75784-21sshd22:34:151
40743993223,6cyclictest0-21swapper/123:35:291
4074399322,28cyclictest0-21swapper/119:25:291
4074399322,28cyclictest0-21swapper/119:25:291
40743993220,6cyclictest47717-21grep19:45:291
40743993219,10cyclictest0-21swapper/122:45:261
40743993219,10cyclictest0-21swapper/122:45:261
4074199321,2cyclictest0-21swapper/019:10:020
40746993125,3cyclictest0-21swapper/219:30:012
40746993125,3cyclictest0-21swapper/219:30:002
40746993124,4cyclictest0-21swapper/220:30:272
40746993124,4cyclictest0-21swapper/200:05:292
40743993122,7cyclictest231ktimers/123:45:271
40743993122,6cyclictest91284-21/usr/sbin/munin00:05:251
40743993119,8cyclictest0-21swapper/121:20:201
40743993118,10cyclictest0-21swapper/119:40:201
40746993024,4cyclictest0-21swapper/223:05:172
40746993024,3cyclictest70679-21unixbench_singl22:00:282
40746993022,5cyclictest30-21rcuc/219:30:272
40746993021,6cyclictest53678-21grep20:20:282
40746993020,7cyclictest84204-21grep23:20:292
40743993023,4cyclictest167450irq/126-8000000.ethernet-tx122:50:081
40743993019,8cyclictest70727-21cron22:05:001
4074399301,4cyclictest0-21swapper/121:50:021
4074399301,23cyclictest0-21swapper/120:45:111
4074399292,25cyclictest0-21swapper/123:07:291
40743992918,8cyclictest0-21swapper/123:00:291
4074399291,2cyclictest0-21swapper/119:55:011
40746992821,4cyclictest89278-21kworker/u8:4-events_freezable_power_00:30:282
40746992821,4cyclictest89278-21kworker/u8:4-events_freezable_power_00:30:282
40746992820,4cyclictest0-21swapper/220:10:012
40743992820,5cyclictest0-21swapper/119:15:011
40743992820,4cyclictest0-21swapper/121:25:271
40743992819,6cyclictest0-21swapper/120:30:281
40743992818,6cyclictest0-21swapper/121:15:221
40743992814,7cyclictest0-21swapper/120:55:191
4074699271,23cyclictest250-21jbd2/mmcblk1p2-820:16:192
40743992719,5cyclictest0-21swapper/100:30:011
40746992622,3cyclictest0-21swapper/222:11:182
40743992622,3cyclictest0-21swapper/120:44:141
40743992622,3cyclictest0-21swapper/120:44:141
40743992617,7cyclictest231ktimers/123:30:161
40743992515,7cyclictest0-21swapper/123:25:011
40743992317,5cyclictest231ktimers/122:25:251
4074399225,9cyclictest0-21swapper/119:10:011
4074699213,11cyclictest40833-21grep19:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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