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2026-05-25 - 23:37

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 Mon May 25, 2026 12:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
307789911051066,21cyclictest0-21swapper/007:25:090
307799910901069,17cyclictest19052-21strings08:15:241
304802642598,29sleep10-21swapper/107:22:271
304652563516,31sleep00-21swapper/007:22:180
30779992391,4cyclictest0-21swapper/107:25:091
307789910192,6cyclictest0-21swapper/008:15:240
62602620,4sleep03077899cyclictest12:00:150
72022590,8sleep13077999cyclictest09:10:191
30779994125,6cyclictest22-21ksoftirqd/111:00:081
30779993923,6cyclictest22-21ksoftirqd/111:55:051
30779993923,6cyclictest22-21ksoftirqd/108:47:121
30779993923,6cyclictest22-21ksoftirqd/108:41:481
30779993923,5cyclictest22-21ksoftirqd/107:35:481
30779993921,6cyclictest22-21ksoftirqd/108:52:001
30779993823,5cyclictest22-21ksoftirqd/110:56:191
30779993823,5cyclictest22-21ksoftirqd/110:03:471
30779993823,5cyclictest22-21ksoftirqd/109:59:571
30779993822,6cyclictest22-21ksoftirqd/111:37:181
30779993822,6cyclictest22-21ksoftirqd/109:05:101
30779993822,5cyclictest22-21ksoftirqd/108:56:371
30779993722,5cyclictest22-21ksoftirqd/112:32:121
30779993722,5cyclictest22-21ksoftirqd/110:42:351
30779993721,6cyclictest22-21ksoftirqd/111:54:411
30779993720,6cyclictest22-21ksoftirqd/111:21:021
30779993720,6cyclictest22-21ksoftirqd/108:34:101
30779993720,6cyclictest22-21ksoftirqd/108:09:021
313832365,4sleep00-21swapper/011:40:210
30779993621,5cyclictest22-21ksoftirqd/112:26:331
30779993621,5cyclictest22-21ksoftirqd/111:29:111
30779993621,5cyclictest22-21ksoftirqd/110:13:441
30779993620,6cyclictest22-21ksoftirqd/111:12:181
30779993620,6cyclictest22-21ksoftirqd/109:04:071
30779993620,5cyclictest22-21ksoftirqd/112:43:141
30779993620,5cyclictest22-21ksoftirqd/109:23:361
30779993619,5cyclictest22-21ksoftirqd/111:41:211
99082351,3sleep00-21swapper/010:45:010
30779993520,5cyclictest22-21ksoftirqd/111:08:391
30779993520,5cyclictest22-21ksoftirqd/109:50:021
30779993519,5cyclictest22-21ksoftirqd/107:55:121
30779993518,5cyclictest22-21ksoftirqd/110:54:341
227822350,3sleep10-21swapper/111:17:001
178402351,3sleep017843-21sh08:12:000
30779993419,5cyclictest22-21ksoftirqd/112:45:111
30779993419,5cyclictest22-21ksoftirqd/109:19:111
30779993418,5cyclictest22-21ksoftirqd/108:27:381
3077999341,21cyclictest6260-21apt-get07:41:061
203412341,29sleep019839-21/usr/sbin/munin09:45:190
3077999332,8cyclictest12601-21chrt09:25:131
3077999332,8cyclictest12601-21chrt09:25:131
30779993319,4cyclictest22-21ksoftirqd/111:48:461
30779993317,5cyclictest22-21ksoftirqd/107:32:151
30779993310,8cyclictest22-21ksoftirqd/108:00:051
194012331,29sleep119410-21diskstats12:35:151
30779993216,6cyclictest22-21ksoftirqd/112:14:301
30779993216,6cyclictest22-21ksoftirqd/109:30:421
30779993216,5cyclictest22-21ksoftirqd/110:34:381
30779993210,6cyclictest838-21/usr/sbin/munin10:20:131
3077899327,7cyclictest0-21swapper/011:45:210
3077899325,11cyclictest0-21swapper/012:53:480
3077899321,15cyclictest556-21/usr/sbin/munin10:20:130
3077899321,10cyclictest0-21swapper/008:00:050
167582325,4sleep081rcu_preempt09:35:220
3077999317,12cyclictest40250irq/92-i91512:18:401
3077999317,12cyclictest40250irq/92-i91512:18:401
3077899311,4cyclictest81rcu_preempt12:40:370
235072311,4sleep023514-21iostat_ios12:45:180
3077999308,19cyclictest13678-21cut12:20:121
30779993014,6cyclictest22-21ksoftirqd/107:51:021
3077899307,5cyclictest11565-21gdbus10:12:420
3077899302,4cyclictest81rcu_preempt11:29:030
30778993020,6cyclictest2228-21grep07:30:280
3077899301,22cyclictest5346-21/usr/sbin/munin09:05:190
30778993011,5cyclictest2935-21needreboot11:50:220
3077899301,14cyclictest9941-21seq09:16:470
156032301,5sleep00-21swapper/009:31:530
86002291,5sleep10-21swapper/107:48:381
62252291,5sleep00-21swapper/007:40:400
325232291,5sleep00-21swapper/010:16:500
3077999294,19cyclictest20794-21iostat_ios08:20:171
3077999293,13cyclictest0-21swapper/111:32:481
3077899291,8cyclictest23014-21rt-features08:25:280
3077899291,4cyclictest81rcu_preempt12:05:330
3077899291,4cyclictest81rcu_preempt11:57:310
3077899291,4cyclictest81rcu_preempt09:01:450
302282291,5sleep00-21swapper/011:36:140
283822291,5sleep00-21swapper/011:31:320
204372291,5sleep00-21swapper/012:35:580
198242291,5sleep10-21swapper/109:45:041
185422293,22sleep0111-21usb-storage12:30:450
171892291,5sleep00-21swapper/011:02:240
113392291,5sleep00-21swapper/012:14:060
58432281,5sleep00-21swapper/010:31:560
45102281,5sleep00-21swapper/007:37:330
3077999286,8cyclictest22-21ksoftirqd/112:05:341
3077999282,15cyclictest0-21swapper/110:37:291
3077999281,8cyclictest6248-21df12:00:131
3077999281,8cyclictest2654-21sshd09:35:031
3077999281,16cyclictest0-21swapper/110:08:141
3077899289,6cyclictest29928-21fschecks_count08:45:150
3077899289,15cyclictest0-21swapper/009:55:180
3077899287,5cyclictest18311-21sed11:05:240
3077899282,7cyclictest7311-21df_inode07:45:130
30778992820,5cyclictest21569-21cpuspeed_turbos11:15:110
3077899281,23cyclictest2952-21fschecks_time10:25:160
30778992811,5cyclictest6296-21taskset10:35:060
3077899281,13cyclictest6668-21/usr/sbin/munin09:10:200
3077899281,13cyclictest28016-21diskstats08:40:130
3077899281,13cyclictest15639-21latency_hist11:00:010
3077899281,13cyclictest11087-21grep09:20:220
3077899281,12cyclictest15944-21interrupts12:25:180
30778992810,6cyclictest18976-21python09:40:270
30778992810,5cyclictest12600-21df09:25:130
30778992810,5cyclictest12600-21df09:25:130
3077899280,4cyclictest81rcu_preempt10:01:550
290532281,5sleep00-21swapper/010:09:520
256062281,5sleep00-21swapper/008:34:270
230752281,5sleep00-21swapper/009:51:210
195272281,5sleep10-21swapper/109:43:321
158612281,4sleep00-21swapper/008:05:540
134792281,5sleep00-21swapper/012:20:040
102222281,5sleep00-21swapper/007:51:000
4742271,5sleep00-21swapper/008:52:210
3077999272,13cyclictest40250irq/92-i91510:15:121
3077999271,8cyclictest10073-21/usr/sbin/munin10:45:301
3077999271,5cyclictest0-21swapper/112:50:241
3077999271,12cyclictest25994-21sort08:35:131
3077999271,12cyclictest16986-21if_eth008:10:181
3077899279,6cyclictest10671-21iostat10:45:190
3077899271,13cyclictest24141-21grep11:20:260
3077899271,12cyclictest12078-21seq12:15:170
3077899271,12cyclictest12078-21seq12:15:160
3077899270,4cyclictest81rcu_preempt08:37:230
211472271,5sleep00-21swapper/011:14:350
121332271,5sleep00-21swapper/007:56:190
119482271,5sleep00-21swapper/010:50:070
3077999262,20cyclictest0-21swapper/110:25:191
3077899264,14cyclictest0-21swapper/008:55:490
30778992610,6cyclictest20351-21awk08:20:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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