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2026-03-28 - 11:42

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 Sat Mar 28, 2026 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2755873997134,32cyclictest2799734-21munin-plugin-st23:25:001
2755875996927,36cyclictest2219083-1kworker/2:2H+kblockd20:15:052
2755873996627,33cyclictest0-21swapper/121:35:281
275587599645,21cyclictest0-21swapper/222:55:022
2755873996222,33cyclictest0-21swapper/120:10:021
2755873996221,33cyclictest0-21swapper/100:15:221
2755873996217,36cyclictest0-21swapper/100:35:171
2755873996120,33cyclictest0-21swapper/121:20:261
2755873996118,35cyclictest0-21swapper/120:15:181
2755873996116,3cyclictest0-21swapper/123:50:011
275587599608,27cyclictest2806680-21/usr/sbin/munin00:05:202
2755873996019,32cyclictest0-21swapper/121:15:341
2755873996012,39cyclictest0-21swapper/100:00:281
2755870996051,4cyclictest0-21swapper/021:20:130
275587399596,45cyclictest0-21swapper/119:55:011
2755873995916,33cyclictest0-21swapper/120:30:291
2755873995912,4cyclictest167450irq/126-8000000.ethernet-tx119:20:051
2755873995819,32cyclictest2811446-21grep00:30:291
2755873995818,32cyclictest0-21swapper/122:00:281
2755873995726,26cyclictest0-21swapper/120:50:271
2755873995723,28cyclictest0-21swapper/100:25:221
2755873995721,29cyclictest0-21swapper/119:25:291
2755873995717,32cyclictest0-21swapper/121:40:271
2755873995717,32cyclictest0-21swapper/121:40:271
2755873995716,34cyclictest0-21swapper/119:15:011
2755873995714,34cyclictest0-21swapper/123:55:211
2755870995741,5cyclictest0-21swapper/019:40:020
275587599569,18cyclictest0-21swapper/223:15:012
275587599569,18cyclictest0-21swapper/223:15:012
2755875995629,13cyclictest0-21swapper/221:05:102
275587399568,15cyclictest231ktimers/123:05:151
2755873995626,23cyclictest2795451-21grep22:55:311
2755873995626,23cyclictest2795451-21grep22:55:311
2755873995621,30cyclictest0-21swapper/121:55:271
2755873995621,26cyclictest0-21swapper/100:05:291
2755873995618,31cyclictest0-21swapper/121:25:271
2755873995613,35cyclictest0-21swapper/121:05:281
2755870995649,4cyclictest0-21swapper/022:35:100
2755875995531,12cyclictest0-21swapper/219:15:142
2755875995531,12cyclictest0-21swapper/219:15:142
2755875995529,14cyclictest0-21swapper/223:40:122
2755875995528,14cyclictest0-21swapper/223:55:122
2755873995522,27cyclictest2798828-21grep23:15:281
2755873995517,31cyclictest0-21swapper/120:45:311
2755873995512,8cyclictest0-21swapper/121:10:051
2755870995519,30cyclictest0-21swapper/022:30:200
2755875995439,11cyclictest2778524-21munin-plugin-st21:20:012
2755875995432,15cyclictest0-21swapper/220:45:142
2755875995430,12cyclictest0-21swapper/220:10:112
2755873995437,11cyclictest0-21swapper/122:40:181
2755873995422,26cyclictest0-21swapper/123:55:011
2755873995422,26cyclictest0-21swapper/123:55:011
2755873995421,27cyclictest2786962-21cron22:10:001
2755873995417,30cyclictest0-21swapper/120:00:291
2755873995414,33cyclictest0-21swapper/121:00:281
2755873995410,8cyclictest0-21swapper/120:20:271
2755873995328,20cyclictest0-21swapper/122:20:171
2755873995328,20cyclictest0-21swapper/122:20:161
275587399531,45cyclictest0-21swapper/119:35:241
275587399531,14cyclictest2793475-21meminfo22:45:241
2755870995346,4cyclictest0-21swapper/000:15:090
2755870995345,5cyclictest2768977-21munin-plugin-st20:25:000
2755870995336,11cyclictest0-21swapper/020:50:000
2755873995219,26cyclictest0-21swapper/123:40:191
2755873995217,28cyclictest0-21swapper/119:40:281
2755873995215,29cyclictest0-21swapper/123:00:281
2755875995133,10cyclictest2783791-21apt-get21:50:162
2755875995131,13cyclictest0-21swapper/223:05:122
2755875995131,13cyclictest0-21swapper/219:40:122
2755875995127,14cyclictest0-21swapper/221:00:142
2755873995113,3cyclictest0-21swapper/120:10:191
275587099514,44cyclictest0-21swapper/021:00:180
2755870995141,5cyclictest167350irq/118-8000000.ethernet-tx020:35:210
2755875995042,4cyclictest2760339-21munin-plugin-st19:35:002
2755875995042,4cyclictest2760339-21munin-plugin-st19:35:002
275587599504,24cyclictest0-21swapper/200:35:002
2755875995031,14cyclictest0-21swapper/219:50:132
2755875995028,16cyclictest0-21swapper/220:30:102
2755875995028,12cyclictest0-21swapper/222:35:132
2755875995028,11cyclictest0-21swapper/223:25:132
2755875995025,13cyclictest0-21swapper/223:00:142
275587399509,8cyclictest0-21swapper/121:45:371
275587399505,13cyclictest0-21swapper/121:50:261
2755873995014,10cyclictest0-21swapper/122:30:191
2755873995012,4cyclictest0-21swapper/119:30:301
2755873995012,4cyclictest0-21swapper/119:30:291
275587099507,5cyclictest131ktimers/019:30:240
275587099507,5cyclictest131ktimers/019:30:230
2755870995039,8cyclictest0-21swapper/021:15:000
2755875994931,12cyclictest0-21swapper/222:10:132
275587399498,8cyclictest0-21swapper/122:35:271
275587399493,11cyclictest2794574-21tail22:50:301
2755873994911,8cyclictest2780827-21cut21:30:281
2755870994941,5cyclictest0-21swapper/023:15:240
2755875994835,9cyclictest2786949-21sshd22:06:572
2755875994835,10cyclictest2774122-21munin-plugin-st20:55:002
2755875994832,9cyclictest2798231-21/usr/sbin/munin23:15:302
2755875994829,12cyclictest2764567-21/usr/sbin/munin19:55:302
2755875994827,13cyclictest2789776-21/usr/sbin/munin22:25:162
2755875994827,12cyclictest2771112-21/usr/sbin/munin20:35:242
2755875994827,11cyclictest0-21swapper/220:00:132
2755875994827,11cyclictest0-21swapper/219:20:142
2755875994825,13cyclictest2768688-21/usr/sbin/munin20:20:262
275587399482,12cyclictest2787749-21grep22:10:301
2755873994814,3cyclictest0-21swapper/100:10:181
2755873994810,8cyclictest0-21swapper/122:25:201
2755870994840,4cyclictest167350irq/118-8000000.ethernet-tx019:25:010
2755870994835,9cyclictest0-21swapper/022:25:010
2755870994835,9cyclictest0-21swapper/022:25:010
275587099483,42cyclictest0-21swapper/021:20:000
2755875994733,7cyclictest2810374-21/usr/sbin/munin00:25:252
2755875994731,9cyclictest2778945-21/usr/sbin/munin21:20:212
2755875994729,12cyclictest0-21swapper/223:20:132
2755875994728,12cyclictest0-21swapper/221:25:122
2755875994727,12cyclictest2781861-21/usr/sbin/munin21:35:282
2755875994725,14cyclictest2812199-21/usr/sbin/munin00:35:262
275587599472,15cyclictest0-21swapper/200:10:182
2755873994738,5cyclictest2802254-21munin-run23:40:011
275587399472,12cyclictest2771435-21sed20:35:281
275587399472,11cyclictest2774482-21sh20:55:221
275587399471,8cyclictest2769748-21unixbench_singl20:25:291
2755873994718,26cyclictest0-21swapper/119:55:291
2755873994710,8cyclictest0-21swapper/100:20:281
2755870994739,4cyclictest167350irq/118-8000000.ethernet-tx000:00:250
2755875994633,7cyclictest0-21swapper/219:45:112
2755875994632,9cyclictest2802235-21sshd23:37:282
2755875994632,11cyclictest0-21swapper/222:40:122
2755875994631,9cyclictest2788523-21/usr/sbin/munin22:15:262
2755875994629,11cyclictest0-21swapper/221:10:152
2755875994626,13cyclictest2783399-21/usr/sbin/munin21:45:362
2755875994625,14cyclictest2765777-21/usr/sbin/munin20:05:182
2755875994625,13cyclictest2800845-21/usr/sbin/munin23:30:202
2755875994625,11cyclictest0-21swapper/219:10:122
275587399466,11cyclictest0-21swapper/123:25:261
2755873994615,6cyclictest2757156-21/usr/sbin/munin19:15:201
2755873994615,6cyclictest2757156-21/usr/sbin/munin19:15:201
2755870994639,4cyclictest167350irq/118-8000000.ethernet-tx023:25:190
2755870994639,4cyclictest167350irq/118-8000000.ethernet-tx023:05:220
2755875994532,9cyclictest1283-21cron23:55:002
2755875994532,9cyclictest1283-21cron23:55:002
2755875994532,7cyclictest2809297-21/usr/sbin/munin00:20:162
2755875994532,7cyclictest2793691-21/usr/sbin/munin22:45:282
2755875994530,9cyclictest2772332-21sshd20:41:432
2755875994530,9cyclictest2772332-21sshd20:41:432
2755873994523,17cyclictest2797620-21if_eth023:10:221
2755873994523,17cyclictest2797620-21if_eth023:10:221
2755870994538,4cyclictest20650irq/252-8000000.ethernet21:45:170
2755870994537,6cyclictest2766294-21grep20:05:280
2755870994537,5cyclictest2774121-21munin-plugin-st20:55:000
2755870994533,8cyclictest0-21swapper/021:55:010
2755870994533,8cyclictest0-21swapper/000:35:010
2755870994533,7cyclictest2776958-21grep21:10:020
2755870994529,14cyclictest131ktimers/020:10:120
275587099452,39cyclictest2790241-21grep22:25:280
2755875994430,8cyclictest2785258-21sshd21:58:272
2755875994429,10cyclictest0-21swapper/221:40:102
2755875994429,10cyclictest0-21swapper/221:40:102
2755875994423,11cyclictest0-21swapper/223:45:112
2755875994418,14cyclictest0-21swapper/200:15:132
2755870994437,4cyclictest167350irq/118-8000000.ethernet-tx019:10:260
275587099443,11cyclictest0-21swapper/000:15:010
275587099442,6cyclictest2763425-21irqstats19:50:230
2755870994424,17cyclictest0-21swapper/019:15:170
2755870994424,17cyclictest0-21swapper/019:15:170
2755875994327,10cyclictest2794856-21apt-get22:55:172
2755875994327,10cyclictest2794856-21apt-get22:55:162
2755875994324,12cyclictest2761099-21/usr/sbin/munin19:35:282
2755875994317,18cyclictest2780555-21fschecks_time21:30:212
275587099432,38cyclictest0-21swapper/019:55:220
2755875994233,5cyclictest2790345-21apt-get22:30:042
2755875994232,5cyclictest2758924-21/usr/sbin/munin19:25:162
2755875994231,6cyclictest2789493-21sshd22:22:272
2755875994231,6cyclictest2789493-21sshd22:22:272
2755875994226,10cyclictest2774488-21cut20:55:212
275587399426,10cyclictest2762872-21apt-get19:50:011
2755873994210,6cyclictest2788714-21latency_hist22:20:011
2755870994231,8cyclictest0-21swapper/019:25:280
2755870994226,13cyclictest0-21swapper/019:40:280
2755875994129,7cyclictest2769537-21/usr/sbin/munin20:25:262
2755875994126,10cyclictest2785788-21/usr/sbin/munin22:00:242
2755875994116,17cyclictest2806647-21wc00:05:022
2755873994110,8cyclictest2800771-21/usr/sbin/munin23:30:301
2755870994132,6cyclictest2803036-21grep23:40:270
275587099412,4cyclictest2780480-21df_inode21:30:180
275587099411,38cyclictest0-21swapper/020:55:120
275587099405,31cyclictest0-21swapper/020:30:280
2755870994033,4cyclictest0-21swapper/020:25:210
2755870994032,5cyclictest2799215-21lsblk23:20:190
275587099402,35cyclictest0-21swapper/022:50:240
275587099401,5cyclictest2801810-21perl23:35:210
275587099401,4cyclictest0-21swapper/021:40:000
275587099401,36cyclictest2804785-21munin-run23:55:010
275587099401,36cyclictest2804785-21munin-run23:55:010
275587399398,6cyclictest0-21swapper/119:10:011
2755873993925,9cyclictest0-21swapper/120:40:241
2755873993925,9cyclictest0-21swapper/120:40:241
2755870993931,6cyclictest20850irq/208-8000000.ethernet23:00:290
275587099392,8cyclictest2793590-21ptp4l22:45:260
2755870993922,15cyclictest0-21swapper/022:15:160
275587099391,36cyclictest2784992-21/usr/sbin/munin21:55:250
275587099391,36cyclictest0-21swapper/022:10:240
2755870993831,4cyclictest0-21swapper/020:15:050
2755870993829,5cyclictest2812001-21fschecks_time00:35:210
2755870993828,7cyclictest2782705-21grep21:40:270
2755870993828,7cyclictest2782705-21grep21:40:270
2755870993826,8cyclictest0-21swapper/023:30:280
275587099381,35cyclictest0-21swapper/022:05:140
275587099381,35cyclictest0-21swapper/021:25:130
275587099381,35cyclictest0-21swapper/000:30:010
275587099373,30cyclictest0-21swapper/022:55:230
275587099373,30cyclictest0-21swapper/022:55:230
2755870993732,2cyclictest0-21swapper/023:10:270
2755870993732,2cyclictest0-21swapper/023:10:270
2755870993725,8cyclictest131ktimers/000:05:290
2755870993629,4cyclictest20850irq/208-8000000.ethernet23:55:180
275587099361,33cyclictest0-21swapper/022:43:310
275587099360,2cyclictest2765356-21sshd20:00:270
2755870993528,4cyclictest20850irq/208-8000000.ethernet20:40:160
2755870993528,4cyclictest20850irq/208-8000000.ethernet20:40:160
2755870993526,6cyclictest2786043-21sed22:00:280
275587099351,3cyclictest0-21swapper/000:25:010
275587099351,32cyclictest0-21swapper/023:48:070
275587099341,30cyclictest2762651-21ptp4l19:45:260
2755875993319,8cyclictest0-21swapper/219:10:012
275587099271,2cyclictest0-21swapper/019:10:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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