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2026-08-28 - 19:52

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 Fri Aug 28, 2026 12:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
77579912081184,20cyclictest9624-21munin-run07:30:011
73052668623,30sleep10-21swapper/107:20:511
73192492402,74sleep00-21swapper/007:21:000
775699157133,18cyclictest9731-21munin-node07:30:010
153912860,3sleep1211ktimersoftd/109:05:381
303512810,4sleep00-21swapper/008:20:240
167252550,4sleep10-21swapper/107:45:191
34832490,8sleep10-21swapper/108:35:221
303312441,4sleep030344-21aten_r4power_cu12:40:110
7757994222,5cyclictest22-21ksoftirqd/112:50:011
775799416,6cyclictest22-21ksoftirqd/107:35:161
775799416,6cyclictest22-21ksoftirqd/107:35:151
7757994118,5cyclictest22-21ksoftirqd/111:58:021
7757993919,6cyclictest22-21ksoftirqd/110:10:101
775799391,7cyclictest22-21ksoftirqd/109:50:211
775799391,7cyclictest22-21ksoftirqd/108:10:211
775799391,7cyclictest22-21ksoftirqd/108:05:131
775799391,7cyclictest22-21ksoftirqd/107:50:111
7757993824,4cyclictest22-21ksoftirqd/111:40:221
775799381,7cyclictest22-21ksoftirqd/112:20:211
775799381,7cyclictest22-21ksoftirqd/110:45:181
775799381,7cyclictest22-21ksoftirqd/110:20:261
775799381,7cyclictest22-21ksoftirqd/110:15:221
775799381,7cyclictest22-21ksoftirqd/108:15:111
775799372,22cyclictest25848-21perl09:35:131
775799371,7cyclictest22-21ksoftirqd/110:40:211
775799371,7cyclictest22-21ksoftirqd/110:40:211
775799371,7cyclictest22-21ksoftirqd/109:30:211
775799371,6cyclictest22-21ksoftirqd/111:45:151
775799371,6cyclictest22-21ksoftirqd/111:00:171
775799371,6cyclictest22-21ksoftirqd/110:05:171
775799371,6cyclictest22-21ksoftirqd/108:40:121
775799371,6cyclictest22-21ksoftirqd/108:25:131
775799371,6cyclictest22-21ksoftirqd/107:55:131
775799371,6cyclictest22-21ksoftirqd/107:40:101
775799365,11cyclictest81rcu_preempt11:10:241
775799362,4cyclictest81rcu_preempt09:40:141
7757993617,5cyclictest22-21ksoftirqd/111:25:251
775799361,6cyclictest22-21ksoftirqd/108:30:201
7756993619,6cyclictest3-21ksoftirqd/008:39:510
7756993611,13cyclictest20941-21/usr/sbin/munin07:55:250
775799359,5cyclictest22-21ksoftirqd/111:17:081
775799359,5cyclictest22-21ksoftirqd/111:17:071
775799356,11cyclictest3286-21runrttasks12:30:101
7757993520,4cyclictest22-21ksoftirqd/110:55:011
7757993515,9cyclictest22-21ksoftirqd/111:10:001
7757993514,6cyclictest22-21ksoftirqd/112:10:281
7757993514,6cyclictest22-21ksoftirqd/112:10:281
775799351,3cyclictest0-21swapper/108:50:151
775699353,5cyclictest22385-21needreboot09:25:230
775699353,4cyclictest81rcu_preempt09:00:290
7756993510,12cyclictest23792-21mailstats12:20:270
58442351,30sleep111038-21snmpd11:35:041
775799345,5cyclictest81rcu_preempt09:14:281
7757993419,4cyclictest22-21ksoftirqd/112:40:141
775799341,7cyclictest22-21ksoftirqd/109:55:181
775799341,6cyclictest22-21ksoftirqd/108:59:551
775799341,5cyclictest22-21ksoftirqd/111:31:151
7757993411,5cyclictest40250irq/92-i91509:25:111
775699344,5cyclictest81rcu_preempt08:55:140
200892341,5sleep020171-21netstat10:45:230
165672340,6sleep016570-21fschecks_time07:45:150
775799336,5cyclictest22-21ksoftirqd/112:17:271
775799332,15cyclictest0-21swapper/108:00:141
775799331,7cyclictest22-21ksoftirqd/109:20:101
7757993315,5cyclictest22-21ksoftirqd/110:30:141
7757993314,16cyclictest22-21ksoftirqd/110:55:111
775699334,5cyclictest81rcu_preempt10:05:220
7756993313,6cyclictest1518-21munin-run12:50:000
775699331,20cyclictest11565-21gdbus08:19:250
7756993310,11cyclictest6472-21cstates10:10:100
775799323,10cyclictest22-21ksoftirqd/112:05:281
775799321,4cyclictest81rcu_preempt12:50:111
7757993214,6cyclictest22-21ksoftirqd/109:04:121
775699329,19cyclictest156262chrt07:41:260
7756993221,6cyclictest7863-21wget11:40:110
775699321,15cyclictest19467-21taskset07:52:220
775799315,4cyclictest22-21ksoftirqd/109:15:171
775799312,4cyclictest81rcu_preempt08:47:091
775799312,15cyclictest29454-21diskstats09:45:151
775799311,4cyclictest81rcu_preempt07:30:121
775699315,14cyclictest81rcu_preempt08:44:590
775699314,20cyclictest15137-21munin-run12:00:010
775699313,4cyclictest81rcu_preempt08:47:240
775699312,24cyclictest29034-21irqstats12:35:190
775699311,4cyclictest81rcu_preempt11:45:260
775699311,22cyclictest0-21swapper/008:54:540
775799307,6cyclictest22-21ksoftirqd/112:25:051
7757993016,10cyclictest22-21ksoftirqd/110:25:181
775799301,4cyclictest81rcu_preempt12:03:211
7757993010,4cyclictest81rcu_preempt12:35:251
775699308,11cyclictest26395-21python09:35:240
775699306,12cyclictest40250irq/92-i91510:50:180
7756993023,5cyclictest0-21swapper/010:25:090
7756993023,5cyclictest0-21swapper/010:15:090
775699302,11cyclictest0-21swapper/009:40:140
7756993016,8cyclictest32048-21python09:50:260
775699301,17cyclictest22307-21fschecks_count08:00:140
775699301,15cyclictest31617-21ls08:25:140
775699301,14cyclictest1548-21sshd09:55:280
7756993010,16cyclictest323752chrt11:19:530
7756993010,16cyclictest323752chrt11:19:520
303402301,5sleep00-21swapper/011:13:160
7757992919,6cyclictest486-21cut11:20:151
775799291,4cyclictest81rcu_preempt08:20:111
775699292,15cyclictest0-21swapper/012:00:330
775699292,14cyclictest17898-21tune2fs10:40:160
775699292,14cyclictest17898-21tune2fs10:40:160
775699291,4cyclictest81rcu_preempt10:04:550
775699291,4cyclictest81rcu_preempt08:07:490
7756992913,5cyclictest2401-21NetworkManager11:35:170
7756992911,6cyclictest30039-21grep09:45:260
775699291,14cyclictest1891-21cat12:50:110
775699291,13cyclictest27135-21/usr/sbin/munin12:30:180
7756992910,6cyclictest12725-21/usr/sbin/munin11:50:310
7756992910,4cyclictest3286-21runrttasks11:25:150
24312291,5sleep00-21swapper/008:33:510
185732291,5sleep00-21swapper/012:06:570
176832291,5sleep00-21swapper/009:14:540
775799281,4cyclictest81rcu_preempt10:00:131
775699284,17cyclictest11456-21python07:30:270
775699284,13cyclictest10101-21wget10:20:120
775699282,22cyclictest0-21swapper/009:30:230
775699281,4cyclictest81rcu_preempt12:28:210
775699281,4cyclictest81rcu_preempt10:33:500
7756992811,6cyclictest975-21/usr/sbin/munin11:20:240
7756992810,6cyclictest18456-21/usr/sbin/munin09:15:190
271542281,5sleep00-21swapper/008:11:570
266812281,5sleep00-21swapper/011:04:130
246242281,4sleep00-21swapper/010:57:310
212382281,5sleep00-21swapper/009:22:360
171802281,5sleep00-21swapper/010:38:230
171062281,5sleep10-21swapper/110:37:381
155912281,5sleep00-21swapper/009:07:440
138952281,5sleep00-21swapper/007:38:110
138952281,5sleep00-21swapper/007:38:110
7757992716,8cyclictest22-21ksoftirqd/111:50:201
775699272,12cyclictest4467-21perl11:30:160
775699271,13cyclictest2401-21NetworkManager12:10:030
775699271,13cyclictest2401-21NetworkManager12:10:020
775699271,12cyclictest27526-21irqstats11:05:220
775699262,8cyclictest21191-21df12:15:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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