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2026-03-11 - 15:10

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 Wed Mar 11, 2026 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30707599831,56cyclictest0-21swapper/122:00:181
30707599813,42cyclictest0-21swapper/123:20:021
307074997739,28cyclictest343238-21latency_hist22:40:010
30707499741,59cyclictest0-21swapper/000:35:120
307074997230,34cyclictest0-21swapper/022:50:010
307074997036,26cyclictest20650irq/252-8000000.ethernet19:55:230
30707499701,60cyclictest0-21swapper/020:30:010
30707599691,55cyclictest0-21swapper/121:10:021
307074996726,37cyclictest334484-21grep21:45:270
307075996629,34cyclictest319424-21/usr/sbin/munin20:20:201
307074996629,31cyclictest325523-21/usr/sbin/munin20:55:220
307074996545,16cyclictest20650irq/252-8000000.ethernet20:25:000
307074996529,33cyclictest322101-21ssh20:35:210
307074996439,20cyclictest0-21swapper/021:00:270
307074996438,22cyclictest20650irq/252-8000000.ethernet23:45:010
307074996429,31cyclictest339702-21/usr/sbin/munin22:15:290
307074996413,9cyclictest0-21swapper/020:10:010
307074996341,18cyclictest20650irq/252-8000000.ethernet21:25:010
307074996336,23cyclictest20850irq/208-8000000.ethernet19:30:180
307074996335,25cyclictest20650irq/252-8000000.ethernet00:00:270
307074996335,23cyclictest20650irq/252-8000000.ethernet23:25:120
307074996312,27cyclictest0-21swapper/021:10:030
307075996216,8cyclictest330286-21apt-get21:25:011
307074996227,30cyclictest0-21swapper/019:50:290
307074996224,32cyclictest0-21swapper/022:20:280
307074996220,38cyclictest309044-21users19:15:280
30707499621,59cyclictest0-21swapper/022:00:280
30707599612,16cyclictest330577-21/usr/sbin/munin21:25:181
307074996129,29cyclictest338743-21/usr/sbin/munin22:10:260
307074996128,30cyclictest20850irq/208-8000000.ethernet00:10:000
307074996127,31cyclictest20850irq/208-8000000.ethernet21:25:100
307074996021,26cyclictest330880-1kworker/0:2H+mmc_complete23:50:010
30707499601,5cyclictest327582-21/usr/sbin/munin21:05:280
30707499601,4cyclictest317885-21dropbear20:10:200
30707499601,3cyclictest362807-21grep00:30:280
30707499601,20cyclictest0-21swapper/023:35:140
30707499591,4cyclictest325082-21unixbench_singl20:50:290
307079995849,5cyclictest360374-21munin-plugin-st00:19:592
307074995835,20cyclictest20650irq/252-8000000.ethernet22:40:190
307074995835,20cyclictest20650irq/252-8000000.ethernet21:55:240
30707499582,4cyclictest307966-21munin-node19:15:020
307074995822,33cyclictest332592-21cut21:35:260
30707499581,5cyclictest318622-21df20:15:170
307074995736,18cyclictest20650irq/252-8000000.ethernet21:30:160
307074995725,27cyclictest0-21swapper/020:40:270
307074995725,27cyclictest0-21swapper/020:40:270
30707499571,4cyclictest310445-21open_inodes19:25:250
307075995614,15cyclictest0-21swapper/123:35:011
307074995622,27cyclictest167350irq/118-8000000.ethernet-tx019:10:010
307074995621,33cyclictest360761-21sh00:20:210
307074995621,33cyclictest0-21swapper/020:45:230
307074995616,7cyclictest348187-21grep23:05:290
30707499561,49cyclictest0-21swapper/020:35:010
307074995535,16cyclictest0-21swapper/000:25:190
307074995533,17cyclictest346274-21phc2sys22:55:270
307074995531,20cyclictest312291-21mailstats19:35:280
307074995531,20cyclictest167350irq/118-8000000.ethernet-tx023:30:280
307074995527,25cyclictest20850irq/208-8000000.ethernet00:15:220
307074995526,26cyclictest0-21swapper/023:55:250
307074995517,4cyclictest20850irq/208-8000000.ethernet19:20:180
307074995517,4cyclictest20850irq/208-8000000.ethernet19:20:180
307074995516,4cyclictest329407-21sshd21:16:190
30707599541,8cyclictest0-21swapper/119:30:001
307075995416,12cyclictest0-21swapper/123:05:011
30707499542,3cyclictest312733-21df_inode19:40:170
307074995423,27cyclictest359438-21grep00:10:280
307074995423,27cyclictest359438-21grep00:10:280
307074995328,19cyclictest337995-21mailstats22:05:270
307074995328,19cyclictest337995-21mailstats22:05:270
307074995326,20cyclictest20850irq/208-8000000.ethernet21:40:110
307074995322,28cyclictest20850irq/208-8000000.ethernet23:00:220
307074995319,29cyclictest0-21swapper/019:45:270
307074995317,32cyclictest0-21swapper/020:00:290
307074995317,32cyclictest0-21swapper/020:00:290
30707499531,50cyclictest0-21swapper/021:50:280
30707499531,12cyclictest345529-21/usr/sbin/munin22:50:280
30707499523,43cyclictest341081-21tune2fs22:25:200
30707599517,18cyclictest0-21swapper/119:15:011
30707599514,10cyclictest0-21swapper/123:55:011
307075995125,12cyclictest0-21swapper/100:00:151
30707499516,10cyclictest355954-21grep23:50:270
307074995138,9cyclictest20650irq/252-8000000.ethernet23:10:160
307074995127,21cyclictest307068-21cyclictest23:20:220
307074995118,30cyclictest0-21swapper/022:30:250
307074995018,4cyclictest20850irq/208-8000000.ethernet23:15:160
307075994828,12cyclictest0-21swapper/121:05:251
307079994633,10cyclictest358784-21latency_hist00:10:012
307075994631,11cyclictest341288-21/usr/sbin/munin22:25:261
307075994627,12cyclictest0-21swapper/119:40:121
307075994625,14cyclictest331711-21/usr/sbin/munin21:30:221
30707599461,34cyclictest0-21swapper/120:30:011
307079994537,4cyclictest337302-21cron22:05:002
307079994534,6cyclictest318309-21grep20:10:292
307079994530,9cyclictest319976-21grep20:20:282
307079994527,12cyclictest0-21swapper/223:30:202
30707599456,19cyclictest0-21swapper/119:35:011
307075994524,12cyclictest348069-21/usr/sbin/munin23:05:271
30707599451,20cyclictest0-21swapper/119:55:181
307079994433,7cyclictest0-21swapper/200:25:002
307075994421,11cyclictest0-21swapper/123:25:111
307079994329,8cyclictest0-21swapper/223:10:012
307079994323,14cyclictest311ktimers/222:40:112
307075994334,4cyclictest314348-21apt-get19:50:151
307075994330,9cyclictest308601-21ssh19:15:201
307075994327,8cyclictest0-21swapper/123:30:241
307075994327,10cyclictest0-21swapper/121:15:121
307075994326,9cyclictest0-21swapper/120:10:191
307075994326,9cyclictest0-21swapper/119:35:281
307075994321,14cyclictest322122-21/usr/sbin/munin20:35:211
307075994318,13cyclictest0-21swapper/122:35:131
30707999424,6cyclictest30-21rcuc/219:35:292
307079994233,5cyclictest344902-21cron22:50:002
30707599425,31cyclictest0-21swapper/122:10:211
307075994227,9cyclictest0-21swapper/100:35:141
307075994225,11cyclictest332459-21/usr/sbin/munin21:35:221
307075994224,10cyclictest344831-21/usr/sbin/munin22:45:271
307075994222,13cyclictest348786-21/usr/sbin/munin23:10:241
307075994222,10cyclictest0-21swapper/121:40:191
307075994218,15cyclictest353907-21/usr/sbin/munin23:40:221
307075994216,19cyclictest336370-21sendmail22:00:001
307079994127,10cyclictest0-21swapper/219:45:272
307075994128,9cyclictest0-21swapper/123:45:281
307075994127,7cyclictest309906-21users19:20:301
307075994127,7cyclictest309906-21users19:20:301
307075994126,10cyclictest0-21swapper/100:25:131
307075994122,13cyclictest335149-21/usr/sbin/munin21:50:261
307075994121,13cyclictest345420-21/usr/sbin/munin22:50:271
307075994121,12cyclictest326445-21/usr/sbin/munin21:00:221
30707599411,20cyclictest0-21swapper/120:20:011
307079994034,3cyclictest0-21swapper/222:35:232
307079994031,6cyclictest336317-21grep21:55:282
307079994029,7cyclictest357758-21munin-plugin-st00:05:002
307079994024,8cyclictest0-21swapper/221:15:302
307079994022,13cyclictest0-21swapper/220:35:192
307079994022,11cyclictest0-21swapper/222:20:022
307075994032,4cyclictest338096-21grep22:05:281
307075994032,4cyclictest338096-21grep22:05:281
307075994026,8cyclictest339797-21/usr/sbin/munin22:15:291
307075994026,7cyclictest360888-21meminfo00:20:241
307075994021,10cyclictest323798-21cut20:45:191
307075994020,13cyclictest358231-21/usr/sbin/munin00:05:251
307079993932,4cyclictest338779-21ptp4l-jitter22:10:262
307079993928,7cyclictest354199-21grep23:40:282
307079993927,7cyclictest0-21swapper/220:50:232
307079993927,6cyclictest0-21swapper/220:40:282
307079993927,6cyclictest0-21swapper/220:40:282
307079993926,8cyclictest341433-21grep22:25:272
307079993924,9cyclictest0-21swapper/223:25:002
307079993920,13cyclictest0-21swapper/220:05:012
307079993920,13cyclictest0-21swapper/220:05:012
307075993931,4cyclictest322897-21ssh20:40:191
307075993931,4cyclictest322897-21ssh20:40:191
307075993931,4cyclictest317058-21ssh20:05:211
307075993930,5cyclictest0-21swapper/100:15:201
307075993930,4cyclictest324482-21apt-get20:50:151
307075993928,8cyclictest356515-21/usr/sbin/munin23:55:241
307075993926,7cyclictest358885-21/usr/sbin/munin00:10:281
307075993926,7cyclictest358885-21/usr/sbin/munin00:10:281
307075993924,9cyclictest349597-21/usr/sbin/munin23:15:241
30707999386,16cyclictest351022-21/usr/sbin/munin23:25:182
307079993824,10cyclictest0-21swapper/221:25:012
307075993832,3cyclictest333954-21apt-get21:45:151
307075993830,4cyclictest340352-21meminfo22:20:241
307075993829,4cyclictest316048-21apt-get20:00:161
307075993829,4cyclictest316048-21apt-get20:00:161
307075993820,11cyclictest346019-21/usr/sbin/munin22:55:191
307075993820,11cyclictest341896-21grep22:30:201
307079993728,4cyclictest0-21swapper/222:55:302
307079993727,6cyclictest310771-21munin-plugin-st19:30:012
307079993727,5cyclictest0-21swapper/219:10:012
307079993724,8cyclictest324259-21sshd20:46:192
307079993720,12cyclictest311ktimers/221:40:142
307079993719,11cyclictest0-21swapper/223:15:192
307079993715,12cyclictest0-21swapper/219:15:012
307075993730,4cyclictest343427-21/usr/sbin/munin22:40:281
307075993725,8cyclictest313510-21apt-get19:45:101
307075993723,10cyclictest321102-21/usr/sbin/munin20:30:121
307075993721,9cyclictest0-21swapper/100:30:201
30707999363,4cyclictest313244-21unixbench_singl19:40:282
307079993629,4cyclictest167550irq/134-8000000.ethernet-tx220:15:282
307079993629,4cyclictest0-21swapper/219:30:262
307079993628,5cyclictest0-21swapper/219:50:222
307079993628,4cyclictest167550irq/134-8000000.ethernet-tx220:55:302
307079993628,4cyclictest0-21swapper/221:35:292
307079993624,8cyclictest0-21swapper/223:00:282
307079993529,4cyclictest326815-21cron21:05:002
307079993526,6cyclictest0-21swapper/200:10:272
307079993526,6cyclictest0-21swapper/200:10:272
307079993523,7cyclictest0-21swapper/220:30:272
307075993528,3cyclictest325378-21/usr/sbin/munin20:55:161
307079993427,5cyclictest0-21swapper/222:30:272
307079993427,4cyclictest167550irq/134-8000000.ethernet-tx222:21:182
307079993427,4cyclictest167550irq/134-8000000.ethernet-tx219:55:282
307079993420,11cyclictest311ktimers/221:50:122
30707999341,26cyclictest0-21swapper/223:50:112
30707999334,27cyclictest0-21swapper/219:15:272
307079993328,2cyclictest0-21swapper/200:25:292
30707999331,28cyclictest317466-21unixbench_singl20:05:302
307079993222,6cyclictest355148-21grep23:45:292
307079993221,7cyclictest0-21swapper/223:40:002
30707999321,2cyclictest0-21swapper/222:55:002
307079993121,6cyclictest0-21swapper/221:05:262
307079993120,7cyclictest0-21swapper/221:10:282
307079993120,6cyclictest0-21swapper/219:20:292
307079993120,6cyclictest0-21swapper/219:20:292
307075993115,12cyclictest307086-21latency_hist19:10:001
30707999309,10cyclictest0-21swapper/223:15:012
307079993023,4cyclictest0-21swapper/223:59:592
307079993020,7cyclictest320851-21grep20:25:262
30707999298,14cyclictest337300-21kworker/u8:1-writeback22:05:182
30707999298,14cyclictest337300-21kworker/u8:1-writeback22:05:182
30707999296,15cyclictest363657-21grep00:35:302
307079992921,4cyclictest0-21swapper/221:45:242
307079992918,5cyclictest0-21swapper/221:25:242
30707999291,25cyclictest1660-21snmpd21:31:092
30707999281,25cyclictest362340-21diskstats00:30:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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