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2026-05-08 - 22:27

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 Fri May 08, 2026 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1681079996410,13cyclictest12-21ksoftirqd/008:20:010
1681079996356,4cyclictest0-21swapper/009:45:100
168107999631,50cyclictest0-21swapper/011:40:120
1681079996313,32cyclictest15-21rcuc/010:30:020
168108299605,32cyclictest1732726-21/usr/sbin/munin12:10:162
1681081996039,14cyclictest22-21rcuc/112:10:021
1681081995924,24cyclictest0-21swapper/110:40:011
1681081995924,24cyclictest0-21swapper/110:40:011
168108299581,48cyclictest0-21swapper/210:10:022
168108299562,16cyclictest1702058-21/usr/sbin/munin09:10:192
168108299539,14cyclictest0-21swapper/207:25:182
1681081995342,7cyclictest1692388-21munin-plugin-st08:15:001
1681079995334,16cyclictest15-21rcuc/012:00:120
1681079995118,28cyclictest0-21swapper/008:55:020
1681082995036,10cyclictest0-21swapper/209:55:012
1681081995040,5cyclictest0-21swapper/109:25:291
1681081995032,12cyclictest0-21swapper/110:20:011
1681081994941,5cyclictest1699321-21apt08:55:001
168107999492,7cyclictest274-21systemd-journal12:14:590
168108299481,23cyclictest1685644-21apt-key07:35:012
1681081994840,5cyclictest1719857-21grep10:55:001
1681081994838,7cyclictest1283-21cron12:10:011
1681081994836,7cyclictest1720703-21sendmail11:00:011
1681079994820,25cyclictest15-21rcuc/012:25:110
168108199475,23cyclictest24-21ksoftirqd/111:05:181
1681081994738,4cyclictest0-21swapper/109:05:281
1681079994735,9cyclictest1683018-21sendmail07:20:000
1681079994735,9cyclictest1683018-21sendmail07:20:000
168107999473,4cyclictest1701559-21tail09:05:250
1681079994728,14cyclictest131ktimers/009:55:090
1681082994632,9cyclictest1713283-21grep10:15:182
1681082994627,12cyclictest0-21swapper/212:05:282
1681082994627,10cyclictest0-21swapper/211:40:252
1681079994638,4cyclictest167350irq/118-8000000.ethernet-tx007:35:030
1681079994630,14cyclictest167350irq/118-8000000.ethernet-tx010:30:160
1681079994624,3cyclictest0-21swapper/012:00:000
168108299457,26cyclictest1718999-21apt-key10:50:012
1681082994532,8cyclictest1703722-21wc09:20:022
1681082994531,9cyclictest1706615-21phc2sys09:35:252
1681082994526,10cyclictest1681672-21cut07:10:252
1681082994518,19cyclictest1721875-21fschecks_count11:05:192
1681081994532,9cyclictest0-21swapper/107:54:591
1681081994531,9cyclictest0-21swapper/109:35:281
1681079994531,9cyclictest131ktimers/010:35:130
1681079994529,14cyclictest167350irq/118-8000000.ethernet-tx011:50:170
1681079994529,14cyclictest167350irq/118-8000000.ethernet-tx011:50:170
1681079994510,5cyclictest1718924-21apt-get10:50:000
1681082994431,8cyclictest0-21swapper/208:45:282
1681082994428,10cyclictest0-21swapper/211:55:012
1681082994428,10cyclictest0-21swapper/211:55:012
1681082994423,13cyclictest1710118-21/usr/sbin/munin09:55:262
1681082994422,13cyclictest1714382-21/usr/sbin/munin10:20:242
1681082994419,17cyclictest1729097-21grep11:45:292
1681081994429,9cyclictest0-21swapper/108:05:291
1681081994427,8cyclictest0-21swapper/110:30:281
1681079994437,4cyclictest167350irq/118-8000000.ethernet-tx011:10:010
1681079994429,11cyclictest131ktimers/010:15:130
168107999441,4cyclictest0-21swapper/010:00:180
1681082994335,5cyclictest0-21swapper/210:30:282
1681082994330,9cyclictest1688468-21grep07:50:182
1681082994329,6cyclictest0-21swapper/209:30:272
1681082994326,9cyclictest0-21swapper/212:35:282
1681082994325,9cyclictest1716938-21phc2sys-jitter10:35:262
1681082994324,12cyclictest1719393-21sh10:50:202
1681082994322,13cyclictest1693006-21ptp4l08:15:262
1681082994318,17cyclictest1700754-21ps09:00:242
1681082994318,16cyclictest1734857-21cut12:20:252
1681081994333,6cyclictest0-21swapper/110:10:271
1681081994326,10cyclictest231ktimers/112:00:121
168107999435,36cyclictest15-21rcuc/009:20:210
1681079994337,4cyclictest20850irq/208-8000000.ethernet09:30:200
1681079994335,4cyclictest167350irq/118-8000000.ethernet-tx012:30:280
1681079994335,4cyclictest167350irq/118-8000000.ethernet-tx012:30:280
1681079994333,8cyclictest1712081-21munin-plugin-st10:10:000
1681079994326,14cyclictest131ktimers/007:25:130
1681079994320,21cyclictest0-21swapper/012:05:250
168107999431,4cyclictest0-21swapper/011:00:020
1681082994221,14cyclictest1682920-21unixbench_multi07:15:262
1681082994221,14cyclictest1682920-21unixbench_multi07:15:262
1681082994219,16cyclictest1697423-21tail08:40:272
1681082994219,16cyclictest1697423-21tail08:40:272
1681082994217,16cyclictest1701501-21tr09:05:242
1681082994215,18cyclictest1725255-21fschecks_count11:25:192
168108299421,15cyclictest0-21swapper/208:35:192
1681081994226,9cyclictest0-21swapper/111:55:271
1681079994237,3cyclictest14-21rcu_preempt11:50:010
1681079994233,5cyclictest1707831-21grep09:40:280
1681079994226,13cyclictest15-21rcuc/008:05:110
168107999421,39cyclictest12-21ksoftirqd/008:55:200
168107999421,39cyclictest0-21swapper/009:30:010
168107999421,38cyclictest0-21swapper/008:33:140
168107999421,36cyclictest0-21swapper/011:15:010
1681079994212,26cyclictest1709313-21ptp4l09:50:250
168108299416,29cyclictest1725972-21/usr/sbin/munin11:30:182
1681082994129,8cyclictest0-21swapper/211:55:282
1681082994125,8cyclictest1688077-21grep07:45:282
1681082994125,10cyclictest1694702-21ptp4l08:25:272
1681082994123,11cyclictest1690476-21/usr/sbin/munin08:00:252
1681082994122,12cyclictest1691339-21ptp4l-jitter08:05:262
1681082994121,13cyclictest1699765-21if_eth008:55:212
1681082994119,14cyclictest1710860-21/usr/sbin/munin10:00:232
1681082994118,16cyclictest1708597-21grep09:45:272
1681081994129,8cyclictest0-21swapper/108:30:271
1681081994128,7cyclictest0-21swapper/109:15:291
1681081994126,8cyclictest0-21swapper/109:50:251
168107999418,6cyclictest15-21rcuc/008:00:000
168107999418,28cyclictest131ktimers/011:00:280
168107999416,33cyclictest0-21swapper/007:45:150
1681079994134,4cyclictest20850irq/208-8000000.ethernet09:40:010
1681079994133,5cyclictest1718034-21grep10:40:270
1681079994133,5cyclictest1718034-21grep10:40:270
1681079994133,5cyclictest0-21swapper/009:15:160
1681079994132,5cyclictest0-21swapper/008:45:290
168107999412,5cyclictest1701060-21date09:05:000
168107999412,4cyclictest1714374-21memory10:20:250
1681082994028,8cyclictest0-21swapper/208:10:282
1681082994027,9cyclictest0-21swapper/211:20:292
1681082994026,8cyclictest1705122-21/usr/sbin/munin09:25:282
1681082994025,9cyclictest1720640-21head10:55:282
1681082994025,11cyclictest1685994-21cut07:35:202
1681082994024,10cyclictest1717566-21cut10:40:192
1681082994024,10cyclictest1717566-21cut10:40:192
1681082994022,9cyclictest1687243-21grep07:40:272
1681082994022,12cyclictest0-21swapper/212:25:252
1681082994021,13cyclictest1723963-21tail11:15:282
1681082994021,12cyclictest1715074-21grep10:25:182
1681082994021,12cyclictest1689755-21grep07:55:272
1681082994020,16cyclictest1703957-21grep09:20:222
1681082994019,12cyclictest1699106-21/usr/sbin/munin08:50:252
1681082994017,12cyclictest311ktimers/212:15:112
1681081994025,9cyclictest0-21swapper/111:10:201
1681081994025,9cyclictest0-21swapper/111:10:201
1681081994025,10cyclictest0-21swapper/108:40:011
1681081994024,10cyclictest0-21swapper/110:45:281
1681081994021,9cyclictest0-21swapper/107:10:271
1681081994021,11cyclictest0-21swapper/110:20:271
168107999404,16cyclictest15-21rcuc/008:30:010
1681079994034,4cyclictest1727464-21sendmail11:40:000
1681079994033,5cyclictest20850irq/208-8000000.ethernet10:10:190
1681079994033,4cyclictest20650irq/252-8000000.ethernet11:10:110
1681079994033,4cyclictest20650irq/252-8000000.ethernet11:10:100
168107999402,4cyclictest1726104-21fschecks_time11:30:180
168107999401,36cyclictest1697487-21mailstats08:40:270
168107999401,36cyclictest1697487-21mailstats08:40:270
1681082993928,8cyclictest0-21swapper/208:35:012
1681082993928,6cyclictest1727232-21ptp4l11:35:262
1681082993923,10cyclictest1736297-21grep12:30:202
1681082993923,10cyclictest1736297-21grep12:30:202
1681082993923,10cyclictest1707418-21grep09:40:202
1681082993922,10cyclictest1723137-21grep11:10:272
1681082993922,10cyclictest1723137-21grep11:10:272
1681081993931,4cyclictest0-21swapper/109:20:291
1681081993925,9cyclictest0-21swapper/107:35:011
168107999392,31cyclictest15-21rcuc/011:25:270
168107999391,36cyclictest0-21swapper/010:50:170
168107999391,36cyclictest0-21swapper/007:40:200
1681082993828,6cyclictest1693510-21/usr/sbin/munin08:20:162
1681082993825,8cyclictest0-21swapper/212:00:262
1681082993824,9cyclictest0-21swapper/211:00:162
1681081993830,4cyclictest1710384-21latency_hist09:59:591
1681081993829,5cyclictest0-21swapper/108:00:271
1681081993828,6cyclictest0-21swapper/109:49:591
1681081993825,8cyclictest0-21swapper/111:15:271
1681081993821,9cyclictest0-21swapper/111:50:281
1681081993821,9cyclictest0-21swapper/111:50:281
1681081993813,14cyclictest231ktimers/110:05:131
1681079993822,14cyclictest0-21swapper/007:20:130
168107999381,4cyclictest0-21swapper/011:25:000
1681082993729,5cyclictest1712833-21grep10:10:272
1681081993728,4cyclictest14-21rcu_preempt11:40:271
1681081993728,4cyclictest0-21swapper/107:45:271
1681081993726,7cyclictest1707860-21apt09:45:001
1681081993722,9cyclictest0-21swapper/111:20:261
1681081993722,7cyclictest0-21swapper/112:20:011
1681081993720,9cyclictest0-21swapper/112:25:251
1681079993730,5cyclictest12-21ksoftirqd/007:10:280
1681079993724,8cyclictest0-21swapper/012:20:190
1681079993724,8cyclictest0-21swapper/009:15:000
1681079993720,12cyclictest131ktimers/008:20:110
1681082993620,11cyclictest1683791-21unixbench_singl07:20:272
1681081993626,6cyclictest0-21swapper/107:35:281
1681081993617,12cyclictest1694295-21sshd08:25:141
1681079993630,4cyclictest0-21swapper/008:10:410
168107999361,3cyclictest0-21swapper/008:35:130
168107999361,33cyclictest0-21swapper/007:35:150
1681082993513,14cyclictest1681153-21latency_hist07:10:022
1681081993526,4cyclictest0-21swapper/107:20:161
1681081993524,6cyclictest0-21swapper/111:00:291
1681081993522,9cyclictest231ktimers/107:40:131
1681081993521,7cyclictest0-21swapper/108:20:271
1681081993520,7cyclictest0-21swapper/108:45:281
168107999351,7cyclictest0-21swapper/008:05:010
1681081993426,4cyclictest0-21swapper/108:15:251
1681081993423,6cyclictest0-21swapper/112:20:281
1681081993422,8cyclictest0-21swapper/108:00:011
1681081993422,6cyclictest0-21swapper/107:15:251
1681081993422,6cyclictest0-21swapper/107:15:251
1681081993421,10cyclictest0-21swapper/109:30:281
1681081993418,8cyclictest0-21swapper/110:00:281
1681081993416,11cyclictest0-21swapper/111:35:201
1681081993412,17cyclictest22-21rcuc/109:10:181
1681079993426,5cyclictest0-21swapper/012:35:220
1681079993423,6cyclictest15-21rcuc/012:20:000
168107999341,29cyclictest1688963-21sed07:50:260
168108199332,9cyclictest22-21rcuc/110:30:001
1681081993326,4cyclictest1697209-21fw_packets08:40:221
1681081993326,4cyclictest1697209-21fw_packets08:40:221
1681081993321,8cyclictest0-21swapper/109:00:281
168108199331,27cyclictest0-21swapper/111:25:111
168108199331,26cyclictest0-21swapper/112:35:001
168108199331,26cyclictest0-21swapper/112:35:001
1681081993221,5cyclictest0-21swapper/111:30:201
1681081993122,5cyclictest0-21swapper/112:35:271
1681081993120,7cyclictest0-21swapper/110:35:181
1681081993119,8cyclictest0-21swapper/107:10:011
168107999311,7cyclictest1681136-21cat07:10:010
1681081993024,4cyclictest0-21swapper/107:26:151
1681081993021,5cyclictest0-21swapper/111:45:291
1681081992916,9cyclictest0-21swapper/108:55:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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