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2026-05-23 - 15:05

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 all highest latencies:
System rack9slot4s (updated Sat May 23, 2026 12:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
300209912581232,12cyclictest0-21swapper/007:25:120
300219912121190,18cyclictest29828-21smartctl08:45:271
300219910981071,22cyclictest30191-21wget07:25:121
287592623575,31sleep00-21swapper/007:20:190
297532551504,31sleep10-21swapper/107:22:461
3002099144125,15cyclictest0-21swapper/008:45:280
219902950,5sleep041ktimersoftd/012:45:000
231042750,6sleep00-21swapper/009:55:170
3002099551,13cyclictest16370-21sort12:30:000
3002099542,13cyclictest13846-21ntp_kernel_pll_10:55:220
30020995312,6cyclictest24491-21hddtemp_smartct12:50:150
3002099522,12cyclictest10485-21ntp_states09:20:250
3002099491,14cyclictest15798-21/usr/sbin/munin11:00:250
3002099482,13cyclictest1578-21df_inode11:50:130
3002099476,11cyclictest3849-21munin-run09:05:010
3002099475,10cyclictest21527-21wc08:25:130
3002099471,13cyclictest24713-21aten_r4power_cu10:00:110
3002099471,13cyclictest11032-21ls10:50:010
30020994512,8cyclictest21125-21cron08:25:000
3002099448,8cyclictest19272-21cpuspeed_turbos09:45:130
30020994410,14cyclictest17122chrt07:32:190
30020994211,9cyclictest1874-21cpuspeed_turbos10:25:120
136362361,4sleep113045-21/usr/sbin/munin10:55:201
98532350,9sleep03002099cyclictest12:10:240
30021993517,6cyclictest22-21ksoftirqd/109:07:521
3002099358,12cyclictest1330-21unixbench_singl08:55:310
166222351,4sleep115643-21/usr/sbin/munin08:10:281
30021993410,13cyclictest4988-21cron12:04:551
3002099349,12cyclictest0-21swapper/010:21:000
3002099341,21cyclictest5546-21tune2fs12:00:160
119992341,29sleep112026-21hddtemp_smartct09:25:191
3002199335,11cyclictest17646-21ntp_states11:05:261
3002099339,12cyclictest8007-21iostat10:40:200
3002099331,15cyclictest29841-21sendmail-msp11:40:000
260432331,4sleep126064-21munin-run11:30:001
3002199329,9cyclictest22423-21diskstats12:45:141
30021993224,5cyclictest31213-21sed08:50:181
3002199321,27cyclictest111-21usb-storage12:34:591
268092321,4sleep126813-21irqstats11:30:211
121092321,5sleep10-21swapper/112:15:481
103952321,5sleep10-21swapper/112:12:311
3002199315,4cyclictest81rcu_preempt12:26:301
30021993116,8cyclictest6177-21diskstats09:10:151
3002099317,13cyclictest26042-21taskset11:29:590
3002099316,13cyclictest30729-21grep11:40:220
3002099315,13cyclictest0-21swapper/010:10:560
3002099311,4cyclictest81rcu_preempt09:53:270
3002099311,14cyclictest15718-21fschecks_time09:35:170
30020993110,17cyclictest21593-21switchtime11:15:280
25012311,26sleep12510-21df_inode07:35:271
152152311,5sleep115225-21df_inode11:00:131
3002199305,4cyclictest81rcu_preempt12:54:041
3002199305,4cyclictest81rcu_preempt08:59:031
30021993020,6cyclictest23525-21missed_timers09:55:241
3002099309,11cyclictest12113-21seq12:15:500
3002099302,15cyclictest31948-21/usr/sbin/munin08:50:300
3002099302,13cyclictest0-21swapper/012:05:280
30020993014,13cyclictest9823-21cron07:55:010
30020993013,6cyclictest18439-21/usr/sbin/munin09:40:290
30020993012,5cyclictest13902-21hddtemp_smartct09:30:160
30020993011,7cyclictest0-21swapper/010:08:050
3002099301,16cyclictest30628-21/usr/sbin/munin10:15:140
3002099301,15cyclictest26935-21/usr/sbin/munin08:40:160
90462291,5sleep10-21swapper/110:44:121
75602291,5sleep10-21swapper/107:47:571
3002199295,5cyclictest81rcu_preempt09:35:271
3002199295,4cyclictest81rcu_preempt12:07:311
3002199295,4cyclictest81rcu_preempt09:43:271
3002199295,4cyclictest81rcu_preempt08:06:251
3002199294,4cyclictest81rcu_preempt11:46:361
3002199294,16cyclictest0-21swapper/110:17:021
3002199292,14cyclictest0-21swapper/110:54:301
30021992919,6cyclictest19807-21cut08:20:151
3002199291,4cyclictest81rcu_preempt08:37:271
3002199291,24cyclictest9311-21grep07:50:281
30021992911,6cyclictest32754-21aten_r4power_en07:30:111
3002199291,15cyclictest19643-21iostat09:45:191
3002099297,11cyclictest2928-21grep07:35:350
3002099292,4cyclictest81rcu_preempt11:20:160
3002099292,15cyclictest0-21swapper/009:13:480
3002099292,14cyclictest14976-21/usr/sbin/munin08:05:310
3002099291,4cyclictest81rcu_preempt11:09:210
3002099291,20cyclictest0-21swapper/008:01:010
30020992911,6cyclictest18916-21taskset08:16:480
30020992911,5cyclictest11565-21gdbus08:14:390
3002099291,14cyclictest4076-21wget09:05:100
30020992910,7cyclictest0-21swapper/008:39:550
30020992910,5cyclictest8032-21df09:15:130
147952291,5sleep10-21swapper/109:31:401
56482281,5sleep10-21swapper/107:42:321
50472281,5sleep10-21swapper/110:31:521
35752281,5sleep10-21swapper/109:02:211
32992281,5sleep10-21swapper/110:28:141
315322281,5sleep10-21swapper/111:43:141
3002199283,17cyclictest0-21swapper/108:00:401
3002199282,6cyclictest0-21swapper/110:49:291
3002199282,4cyclictest81rcu_preempt09:53:261
3002199281,15cyclictest8032-21df09:15:141
3002199281,14cyclictest23165-21/usr/sbin/munin08:30:251
3002199281,14cyclictest20555-21sshd11:15:071
3002099289,6cyclictest11032-21ls07:55:280
3002099284,3cyclictest81rcu_preempt12:45:160
3002099283,12cyclictest0-21swapper/007:45:150
3002099282,13cyclictest18529-21expr12:35:120
30020992811,5cyclictest20081-21taskset11:11:420
30020992811,5cyclictest16506-21wget12:30:120
3002099281,14cyclictest4470-21df_inode07:40:150
299202281,5sleep10-21swapper/110:12:301
29662281,5sleep10-21swapper/111:53:371
293742281,5sleep10-21swapper/111:35:371
282402281,5sleep10-21swapper/108:40:511
115432281,5sleep10-21swapper/107:58:231
55062271,5sleep10-21swapper/110:35:051
3002199273,19cyclictest3877-21iostat_ios11:55:211
3002199272,11cyclictest25393-21memory10:00:231
3002199272,10cyclictest9940-21df_inode09:20:141
3002099279,7cyclictest0-21swapper/011:49:090
3002099272,12cyclictest4660-21python10:30:300
3002099271,5cyclictest6488-21mailstats10:35:300
3002099271,16cyclictest0-21swapper/011:32:290
3002099271,14cyclictest11823-21df_inode09:25:150
281502271,5sleep10-21swapper/110:08:351
198562271,5sleep10-21swapper/112:38:071
187992271,5sleep10-21swapper/108:15:351
126912271,5sleep10-21swapper/112:20:061
12642271,5sleep10-21swapper/110:22:461
3002199267,7cyclictest23021-21/usr/sbin/munin11:20:171
30021992618,5cyclictest21402-21aten_r4power_vo08:25:131
30021992615,7cyclictest19929-21/usr/sbin/munin11:10:441
3002099269,5cyclictest23455-21df_inode08:30:140
3002099269,4cyclictest11565-21gdbus12:22:290
3002099261,16cyclictest0-21swapper/011:58:070
3002099261,15cyclictest0-21swapper/010:50:120
215422261,5sleep10-21swapper/112:40:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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