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2026-03-30 - 05:53

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 Mon Mar 30, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
320238991179,102cyclictest0-21swapper/023:30:190
320240995838,12cyclictest353018-21munin-plugin-st22:20:001
320240995838,12cyclictest353018-21munin-plugin-st22:20:001
320240995546,4cyclictest366498-21kworker/u8:1-events_freezable_power_23:40:281
320240995544,7cyclictest340851-21munin-plugin-st21:10:001
32024099552,38cyclictest346102-21cat21:40:011
320238995440,11cyclictest327250-21munin-plugin-st19:50:000
320240995339,9cyclictest352291-21cat22:15:011
320244995242,6cyclictest323871-21munin-plugin-st19:30:002
320244995242,6cyclictest323871-21munin-plugin-st19:30:002
320244995240,8cyclictest311ktimers/222:15:132
320244995240,8cyclictest311ktimers/222:15:132
320240995242,6cyclictest357250-21munin-plugin-st22:45:001
32024099518,30cyclictest22-21rcuc/122:35:011
32024099518,30cyclictest22-21rcuc/122:35:011
32023899502,40cyclictest0-21swapper/019:30:010
32023899502,40cyclictest0-21swapper/019:30:010
320238994940,5cyclictest167350irq/118-8000000.ethernet-tx022:05:280
320238994940,5cyclictest167350irq/118-8000000.ethernet-tx022:05:280
320238994938,9cyclictest332306-21sendmail20:20:000
320240994831,10cyclictest334840-21sh20:34:591
320240994828,16cyclictest231ktimers/123:05:121
320238994840,5cyclictest167350irq/118-8000000.ethernet-tx021:40:240
320238994840,5cyclictest167350irq/118-8000000.ethernet-tx021:40:240
320244994738,5cyclictest330623-21munin-plugin-st20:10:002
320244994713,28cyclictest311ktimers/220:20:112
320244994713,28cyclictest311ktimers/220:20:102
320240994739,4cyclictest0-21swapper/100:35:281
320240994737,5cyclictest0-21swapper/100:15:001
320240994736,6cyclictest0-21swapper/100:05:221
320238994730,14cyclictest0-21swapper/020:10:190
320238994640,4cyclictest358928-21munin-plugin-st22:55:000
320238994636,7cyclictest167350irq/118-8000000.ethernet-tx020:45:020
32023899461,12cyclictest0-21swapper/000:05:010
320240994532,8cyclictest362237-21grep23:10:271
320240994532,8cyclictest362237-21grep23:10:271
320240994526,11cyclictest231ktimers/122:05:121
320240994526,11cyclictest231ktimers/122:05:121
320238994537,5cyclictest20850irq/208-8000000.ethernet20:35:280
320244994435,5cyclictest0-21swapper/219:15:012
320244994433,6cyclictest328050-21grep19:50:282
320244994428,7cyclictest0-21swapper/222:20:282
320240994433,6cyclictest339111-21grep20:55:281
320240994433,6cyclictest339111-21grep20:55:281
320240994426,10cyclictest0-21swapper/119:49:591
32023899442,6cyclictest374485-21df_inode00:25:170
320244994335,5cyclictest323035-21munin-plugin-st19:25:002
320244994333,6cyclictest0-21swapper/220:30:292
320244994333,5cyclictest0-21swapper/200:25:282
320244994327,11cyclictest311ktimers/221:20:122
320240994328,9cyclictest0-21swapper/123:00:261
320238994338,3cyclictest167350irq/118-8000000.ethernet-tx022:30:180
320238994338,3cyclictest167350irq/118-8000000.ethernet-tx022:30:180
320238994336,4cyclictest20650irq/252-8000000.ethernet00:23:570
320238994336,4cyclictest167350irq/118-8000000.ethernet-tx022:45:220
320238994329,10cyclictest0-21swapper/020:35:000
320238994320,20cyclictest19750irq/27-20000000.i2c21:15:180
32023899431,40cyclictest0-21swapper/023:00:160
32023899431,40cyclictest0-21swapper/021:50:210
32023899431,40cyclictest0-21swapper/019:10:200
32023899431,39cyclictest369669-21ptp4l23:55:270
320244994224,12cyclictest0-21swapper/222:40:012
320244994223,16cyclictest14-21rcu_preempt22:35:012
320244994223,16cyclictest14-21rcu_preempt22:35:012
320244994217,13cyclictest311ktimers/200:20:052
320238994234,4cyclictest0-21swapper/020:25:200
320238994222,16cyclictest329143-21/usr/sbin/munin20:00:270
320238994219,18cyclictest0-21swapper/023:20:010
32023899421,6cyclictest340506-21meminfo21:05:250
32023899421,39cyclictest0-21swapper/019:15:040
320244994130,5cyclictest311ktimers/219:35:202
320244994125,10cyclictest0-21swapper/220:50:262
320240994132,5cyclictest0-21swapper/122:05:011
320240994130,7cyclictest364002-21munin-plugin-st23:25:001
320240994129,7cyclictest0-21swapper/121:10:211
320240994129,7cyclictest0-21swapper/121:10:201
320240994126,7cyclictest0-21swapper/120:45:281
320238994134,5cyclictest0-21swapper/000:20:000
32023899412,3cyclictest361731-21diskstats23:10:170
32023899412,3cyclictest361731-21diskstats23:10:170
320238994113,13cyclictest12-21ksoftirqd/000:35:010
320238994113,13cyclictest12-21ksoftirqd/000:35:010
320244994032,4cyclictest14-21rcu_preempt00:20:012
320244994026,9cyclictest30-21rcuc/222:25:122
320240994031,6cyclictest0-21swapper/123:35:191
320240994031,6cyclictest0-21swapper/123:35:191
320240994031,5cyclictest0-21swapper/122:55:261
320240994029,6cyclictest0-21swapper/123:55:201
32024099401,4cyclictest0-21swapper/122:00:011
32023899403,3cyclictest376515-21ptp4l00:35:270
320238994033,3cyclictest354519-21wc22:25:280
32023899402,5cyclictest356098-21phc2sys-jitter22:35:250
32023899402,4cyclictest349935-21irqstats22:00:230
32023899401,36cyclictest322466-21diskstats19:20:170
320244993927,8cyclictest0-21swapper/221:00:292
320244993923,9cyclictest0-21swapper/222:15:012
320244993921,9cyclictest0-21swapper/222:50:262
32024499391,31cyclictest321532-21/usr/sbin/munin19:15:242
320240993931,4cyclictest0-21swapper/119:35:281
320240993930,5cyclictest338004-21grep20:50:251
320240993928,8cyclictest0-21swapper/119:25:001
320240993925,9cyclictest0-21swapper/119:50:191
320240993924,10cyclictest0-21swapper/120:05:261
320238993933,4cyclictest167350irq/118-8000000.ethernet-tx000:10:220
320238993932,4cyclictest0-21swapper/022:15:140
320238993932,4cyclictest0-21swapper/022:15:140
320238993931,4cyclictest167350irq/118-8000000.ethernet-tx021:45:190
32023899391,4cyclictest341114-21df_inode21:10:170
32023899391,4cyclictest341114-21df_inode21:10:170
32023899391,4cyclictest0-21swapper/019:30:190
32023899391,36cyclictest0-21swapper/023:20:140
320244993828,5cyclictest14-21rcu_preempt23:45:212
320244993828,5cyclictest0-21swapper/223:35:282
320244993828,5cyclictest0-21swapper/223:35:282
320244993827,5cyclictest0-21swapper/223:50:202
320244993827,5cyclictest0-21swapper/223:50:202
320244993822,11cyclictest311ktimers/220:45:112
320244993815,16cyclictest320234-21cyclictest00:10:162
320240993828,6cyclictest342413-21grep21:15:301
320240993827,7cyclictest370646-21grep00:00:271
320240993827,7cyclictest320943-21grep19:10:281
320240993823,10cyclictest0-21swapper/100:25:181
320238993833,3cyclictest0-21swapper/021:35:100
320238993831,4cyclictest0-21swapper/022:55:090
320238993830,5cyclictest20850irq/208-8000000.ethernet22:15:000
320238993827,8cyclictest0-21swapper/019:40:000
320238993822,14cyclictest0-21swapper/021:25:270
32023899381,4cyclictest0-21swapper/023:40:160
32023899381,35cyclictest0-21swapper/021:55:140
32023899381,35cyclictest0-21swapper/021:00:160
32023899381,35cyclictest0-21swapper/020:40:220
32023899381,35cyclictest0-21swapper/019:55:110
320244993727,6cyclictest0-21swapper/221:35:262
320244993725,7cyclictest0-21swapper/219:55:262
320240993728,5cyclictest0-21swapper/119:40:301
320240993727,5cyclictest0-21swapper/122:45:291
320240993722,8cyclictest0-21swapper/100:30:291
320240993722,8cyclictest0-21swapper/100:30:291
320238993730,4cyclictest0-21swapper/019:54:330
320238993729,5cyclictest0-21swapper/023:50:280
320238993729,5cyclictest0-21swapper/023:50:280
320238993727,5cyclictest20850irq/208-8000000.ethernet21:00:000
320238993727,5cyclictest20850irq/208-8000000.ethernet21:00:000
32023899371,34cyclictest0-21swapper/021:30:200
320244993625,7cyclictest367288-21grep23:40:282
320244993625,7cyclictest359656-21grep22:55:262
320244993620,11cyclictest311ktimers/219:30:092
32024499361,2cyclictest0-21swapper/219:50:012
32024499361,29cyclictest0-21swapper/221:05:192
320240993630,3cyclictest14-21rcu_preempt22:35:191
320240993628,4cyclictest0-21swapper/120:10:271
320240993626,7cyclictest373166-21grep00:15:311
320240993626,6cyclictest333886-21grep20:25:261
320240993622,9cyclictest0-21swapper/121:30:271
320240993620,8cyclictest0-21swapper/100:25:011
32024099361,28cyclictest1660-21snmpd22:52:401
320238993619,15cyclictest0-21swapper/020:20:230
320238993619,15cyclictest0-21swapper/020:20:230
32023899361,33cyclictest0-21swapper/023:35:150
32023899361,33cyclictest0-21swapper/023:35:150
32023899361,33cyclictest0-21swapper/020:50:140
32024499353,5cyclictest832-21systemd-network23:07:212
320244993526,4cyclictest167550irq/134-8000000.ethernet-tx220:13:242
320244993525,5cyclictest0-21swapper/200:00:272
320244993524,8cyclictest0-21swapper/220:15:302
320244993523,7cyclictest0-21swapper/222:00:282
320244993523,6cyclictest344425-21/usr/sbin/munin21:30:272
320240993529,4cyclictest14-21rcu_preempt20:40:191
320240993527,6cyclictest344165-21grep21:25:321
320240993525,6cyclictest22-21rcuc/121:20:281
320240993521,2cyclictest3625001/usr/sbin/munin23:15:231
32024099351,2cyclictest0-21swapper/122:30:011
320238993530,3cyclictest0-21swapper/023:25:160
320238993527,6cyclictest131ktimers/020:05:260
32023899351,3cyclictest0-21swapper/022:20:260
32023899351,32cyclictest0-21swapper/023:09:170
32023899351,32cyclictest0-21swapper/021:20:250
32024499344,15cyclictest30-21rcuc/223:05:012
320244993427,4cyclictest14-21rcu_preempt20:40:282
320244993425,6cyclictest0-21swapper/220:55:272
320244993425,6cyclictest0-21swapper/220:55:272
320244993424,6cyclictest364741-21grep23:25:282
320244993424,5cyclictest347672-21grep21:45:282
320244993418,13cyclictest311ktimers/220:35:122
32024099345,24cyclictest368165-21unixbench_singl23:45:281
320240993428,3cyclictest365628-21unixbench_singl23:30:281
320240993425,6cyclictest328835-21grep19:55:261
320240993422,7cyclictest231ktimers/121:40:141
320240993422,7cyclictest231ktimers/121:40:131
32023899343,6cyclictest367766-21fschecks_time23:45:210
32023899341,7cyclictest0-21swapper/022:45:010
320244993327,3cyclictest363023-21grep23:15:282
320244993324,6cyclictest0-21swapper/220:25:272
320244993322,8cyclictest0-21swapper/221:10:282
320244993322,8cyclictest0-21swapper/221:10:282
320240993328,3cyclictest14-21rcu_preempt21:45:281
320240993327,4cyclictest14-21rcu_preempt20:25:011
320240993327,4cyclictest14-21rcu_preempt20:25:011
320240993321,6cyclictest0-21swapper/119:15:201
320240993320,6cyclictest368946-21grep23:50:281
320240993320,6cyclictest368946-21grep23:50:281
320240993319,9cyclictest0-21swapper/121:05:011
32024099331,2cyclictest0-21swapper/120:20:011
32024099331,20cyclictest320242-21latency_hist19:09:591
320238993327,4cyclictest0-21swapper/019:42:150
320238993326,4cyclictest0-21swapper/000:05:140
320244993228,3cyclictest320234-21cyclictest22:40:272
320244993225,5cyclictest167550irq/134-8000000.ethernet-tx223:34:242
320244993225,4cyclictest311ktimers/219:40:302
320244993223,5cyclictest0-21swapper/200:05:212
320244993221,5cyclictest0-21swapper/200:30:212
320244993221,5cyclictest0-21swapper/200:30:212
320240993222,5cyclictest0-21swapper/120:05:001
32024099321,4cyclictest0-21swapper/122:25:011
32024499315,11cyclictest350602-21/usr/sbin/munin22:05:182
32024499315,11cyclictest350602-21/usr/sbin/munin22:05:172
32024499313,16cyclictest32-21ksoftirqd/223:15:012
32024499313,16cyclictest32-21ksoftirqd/223:15:012
320244993123,5cyclictest328909-21kworker/u8:0-writeback20:00:252
320244993121,6cyclictest0-21swapper/200:35:292
320244993118,9cyclictest0-21swapper/221:50:292
320244993112,4cyclictest8321systemd-network21:19:522
320240993124,4cyclictest14-21rcu_preempt23:25:261
320240993119,9cyclictest0-21swapper/119:30:251
320244993023,4cyclictest0-21swapper/221:25:302
320244993022,5cyclictest346883-21grep21:40:292
320244993022,5cyclictest346883-21grep21:40:292
320244993019,8cyclictest311ktimers/221:55:132
320244993013,13cyclictest311ktimers/223:20:142
320240993023,4cyclictest231ktimers/119:25:211
320240993023,4cyclictest231ktimers/119:25:211
320240992919,7cyclictest22-21rcuc/120:35:221
320240992915,10cyclictest231ktimers/121:50:131
320238992914,9cyclictest0-21swapper/019:10:010
320244992820,4cyclictest0-21swapper/223:55:262
320244992715,6cyclictest30-21rcuc/222:45:292
320244992520,3cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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