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2026-07-16 - 23:55

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #4

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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rack9slot4s (updated Thu Jul 16, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26669911171084,23cyclictest11925-21kworker/0:007:28:340
25802586538,33sleep00-21swapper/007:24:420
23062464369,31sleep10-21swapper/107:21:591
266799121114,4cyclictest2695-21snmpd07:28:331
104852770,3sleep0111rcuc/009:07:000
97362560,8sleep1266799cyclictest07:40:161
2666994019,10cyclictest3-21ksoftirqd/009:12:190
304372391,34sleep030585-21unixbench_multi11:25:280
2666993922,6cyclictest3-21ksoftirqd/011:03:330
266699379,4cyclictest81rcu_preempt10:03:080
2666993721,4cyclictest3-21ksoftirqd/010:35:270
2666993612,4cyclictest40250irq/92-i91510:10:220
266799354,13cyclictest40250irq/92-i91507:55:161
2666993519,5cyclictest3-21ksoftirqd/008:54:520
266699351,4cyclictest81rcu_preempt12:45:000
243162351,29sleep124350-21iostat11:10:191
240432351,4sleep024052-21/usr/sbin/munin11:10:150
79522341,28sleep18036-21memory07:35:211
266799346,4cyclictest81rcu_preempt09:55:181
266799341,5cyclictest22-21ksoftirqd/110:50:271
266699346,15cyclictest2225-21dbus-daemon09:58:120
2666993419,5cyclictest3-21ksoftirqd/008:18:500
2666993419,5cyclictest3-21ksoftirqd/008:14:230
81142330,5sleep041ktimersoftd/009:00:270
65032331,5sleep16558-21users08:55:311
266799336,4cyclictest81rcu_preempt09:20:011
266799331,6cyclictest22-21ksoftirqd/110:55:201
266799331,4cyclictest22-21ksoftirqd/112:45:191
266799331,4cyclictest22-21ksoftirqd/112:20:181
2667993314,15cyclictest22-21ksoftirqd/111:25:151
2667993311,5cyclictest81rcu_preempt12:50:131
2667993310,8cyclictest22-21ksoftirqd/109:51:221
266699332,18cyclictest21101-21runrttasks12:27:160
2666993318,5cyclictest3-21ksoftirqd/008:26:110
2666993318,4cyclictest3-21ksoftirqd/011:20:310
2666993317,5cyclictest3-21ksoftirqd/011:39:470
266699331,18cyclictest21524-21sed09:35:290
266699331,16cyclictest81rcu_preempt11:55:000
266699331,16cyclictest81rcu_preempt11:55:000
201742331,10sleep10-21swapper/108:06:111
155712331,5sleep115626-21users10:45:311
266799321,4cyclictest81rcu_preempt08:10:151
266799321,4cyclictest22-21ksoftirqd/108:39:551
2667993214,13cyclictest2225-21dbus-daemon12:15:011
2666993218,4cyclictest3-21ksoftirqd/008:23:020
2666993217,5cyclictest3-21ksoftirqd/012:52:160
2666993217,5cyclictest3-21ksoftirqd/010:20:450
2666993216,5cyclictest3-21ksoftirqd/010:53:450
266699321,4cyclictest81rcu_preempt12:40:000
12892321,5sleep11294-21iostat_ios11:35:191
266799318,4cyclictest81rcu_preempt12:00:131
266799313,4cyclictest81rcu_preempt08:44:101
2667993121,4cyclictest22-21ksoftirqd/108:25:221
2667993116,4cyclictest22-21ksoftirqd/112:00:001
2667993116,12cyclictest22-21ksoftirqd/110:15:111
2667993116,12cyclictest22-21ksoftirqd/110:15:111
2667993115,12cyclictest22-21ksoftirqd/109:00:261
266699316,4cyclictest81rcu_preempt10:55:270
2666993117,5cyclictest3-21ksoftirqd/012:03:480
2666993116,5cyclictest3-21ksoftirqd/012:07:590
2666993116,5cyclictest3-21ksoftirqd/008:37:280
2666993115,6cyclictest3-21ksoftirqd/008:04:160
2666993114,14cyclictest3475-21grep11:40:230
2666993110,10cyclictest3-21ksoftirqd/010:08:210
109402311,5sleep110997-21aten_r4power_po09:10:091
40922301,25sleep14135-21missed_timers08:50:221
266799309,4cyclictest81rcu_preempt11:05:211
266799308,4cyclictest81rcu_preempt11:45:101
266799308,4cyclictest81rcu_preempt09:35:221
266799308,4cyclictest81rcu_preempt09:25:271
266799306,4cyclictest81rcu_preempt10:35:161
266799301,8cyclictest22245-21/usr/sbin/munin09:40:261
2667993016,11cyclictest22-21ksoftirqd/108:45:281
2667993015,12cyclictest22-21ksoftirqd/111:15:191
266799301,16cyclictest16365-21hddtemp_smartct12:15:171
266699303,16cyclictest0-21swapper/010:45:120
266699302,13cyclictest15444-21ls09:20:220
266699301,6cyclictest31911-21kernelversion11:30:200
2666993016,4cyclictest3-21ksoftirqd/009:27:530
2666993016,4cyclictest3-21ksoftirqd/007:35:100
2666993014,6cyclictest3-21ksoftirqd/011:57:270
2666993014,6cyclictest3-21ksoftirqd/011:09:390
2666993014,5cyclictest3-21ksoftirqd/008:32:090
2666993014,4cyclictest3-21ksoftirqd/012:12:540
266699301,17cyclictest11364-21aten_r4power_po07:45:110
2666993011,6cyclictest18368-21iostat_ios12:20:170
266699301,12cyclictest11892-21kworker/u4:207:43:370
239312301,4sleep02225-21dbus-daemon09:44:490
65992291,5sleep10-21swapper/110:24:171
32342291,5sleep00-21swapper/008:49:590
291272291,4sleep10-21swapper/111:23:511
266799297,4cyclictest81rcu_preempt08:15:121
266799297,4cyclictest81rcu_preempt08:00:131
266799297,4cyclictest81rcu_preempt07:50:091
266799297,4cyclictest81rcu_preempt07:45:141
266799296,4cyclictest81rcu_preempt12:40:131
266799296,4cyclictest81rcu_preempt10:25:121
266799295,4cyclictest81rcu_preempt08:23:151
266799295,4cyclictest81rcu_preempt07:30:111
266799294,4cyclictest81rcu_preempt12:31:421
266799291,9cyclictest6611-21cpu11:50:111
266799291,9cyclictest6611-21cpu11:50:101
2667992919,4cyclictest22-21ksoftirqd/111:42:291
2667992919,4cyclictest22-21ksoftirqd/111:00:121
2667992918,6cyclictest13345-21grep12:05:301
266799291,15cyclictest24340-21ls09:45:121
266799291,10cyclictest22-21ksoftirqd/109:05:561
266699292,13cyclictest7129-21diskstats10:25:140
2666992915,5cyclictest3-21ksoftirqd/010:34:070
2666992915,4cyclictest3-21ksoftirqd/012:17:300
2666992914,4cyclictest40250irq/92-i91509:33:060
101212291,5sleep10-21swapper/110:31:531
8802281,5sleep00-21swapper/008:41:130
273132281,5sleep00-21swapper/009:50:580
266799286,4cyclictest81rcu_preempt12:25:211
266799285,10cyclictest14881-21cpu09:20:121
266799284,8cyclictest31938-21diskstats10:05:141
266799283,18cyclictest31880-21iostat_ios11:30:201
266799283,11cyclictest31035-21users10:00:311
2667992814,10cyclictest22-21ksoftirqd/110:10:321
2667992812,11cyclictest0-21swapper/112:35:121
266699287,6cyclictest3-21ksoftirqd/009:20:010
266699286,4cyclictest81rcu_preempt08:00:000
2666992814,4cyclictest3-21ksoftirqd/012:30:070
2666992813,5cyclictest3-21ksoftirqd/007:33:530
266699281,15cyclictest0-21swapper/008:05:180
2666992810,5cyclictest4595-21/usr/sbin/munin11:45:090
2666992810,5cyclictest25133-21python09:45:280
198752281,5sleep10-21swapper/109:31:491
66902271,4sleep00-21swapper/008:56:470
266799275,4cyclictest81rcu_preempt10:40:121
266799275,4cyclictest81rcu_preempt08:30:381
2666992714,4cyclictest3-21ksoftirqd/012:45:390
266699271,14cyclictest3347-21df_inode10:15:120
266699271,14cyclictest3347-21df_inode10:15:120
266699271,13cyclictest25926-21diskstats11:15:140
266699271,13cyclictest11565-21gdbus07:50:570
2666992710,5cyclictest13848-21chrt10:41:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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