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2026-05-26 - 21:47

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 Tue May 26, 2026 12:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
210889912401213,21cyclictest32084-21strings07:50:211
210889912401213,21cyclictest32084-21strings07:50:211
208382672626,30sleep10-21swapper/107:22:591
206992532451,65sleep00-21swapper/007:21:270
2108799179157,6cyclictest0-21swapper/007:50:210
2108799179157,6cyclictest0-21swapper/007:50:210
2108799145122,4cyclictest21254-21aten_r4power_cu07:25:100
210642640,3sleep10-21swapper/108:45:281
170822471,28sleep017133-21swap08:35:290
193842460,5sleep021085-21cyclictest10:10:000
2108899383,18cyclictest29461-21/usr/sbin/munin07:45:321
2108799371,12cyclictest180432cut11:30:220
21087993711,13cyclictest19651-21hddtemp_smartct11:35:170
148402361,31sleep114920-21memory08:30:211
2108799351,15cyclictest0-21swapper/010:39:580
2108799349,6cyclictest21247-21awk10:15:000
2108799341,9cyclictest12298-21/usr/sbin/munin09:50:130
2108899335,4cyclictest81rcu_preempt09:09:331
2108799339,12cyclictest25411-21iostat_ios11:50:210
21088993215,14cyclictest26243-21cat07:35:191
2108799323,26cyclictest6376-21kworker/0:309:45:390
21087993224,5cyclictest24676-21switchtime08:55:260
2108799321,8cyclictest0-21swapper/010:56:340
2108799321,12cyclictest28307-21missed_timers07:40:210
197782321,5sleep119845-21memory11:35:221
171352321,5sleep10-21swapper/108:35:291
49072311,4sleep15029-21users12:20:301
232742311,5sleep10-21swapper/108:53:001
2108899316,7cyclictest81rcu_preempt12:35:011
21088993116,11cyclictest22-21ksoftirqd/111:40:131
21088993111,6cyclictest26764-21aten_r4power_po11:55:111
2108799316,12cyclictest0-21swapper/008:00:150
2108799315,13cyclictest2347-21munin-run09:25:010
2108799312,14cyclictest26018-21perl09:00:170
2108799311,4cyclictest81rcu_preempt12:11:560
160422310,2chrt16043-21mailstats12:50:260
92442301,5sleep10-21swapper/111:06:251
78712301,5sleep10-21swapper/109:38:041
316602301,5sleep10-21swapper/110:40:271
289172301,5sleep10-21swapper/107:41:051
2108899302,7cyclictest6607-21iostat_ios11:00:201
21088993020,6cyclictest17493-21basename10:05:001
2108899301,5cyclictest81rcu_preempt12:25:081
2108899301,4cyclictest81rcu_preempt12:05:291
2108799309,6cyclictest18277-21taskset08:40:120
2108799308,7cyclictest28421-21munin-run12:00:000
2108799303,4cyclictest81rcu_preempt10:28:380
2108799302,15cyclictest0-21swapper/011:17:540
2108799302,15cyclictest0-21swapper/011:17:540
2108799302,14cyclictest29274-21memory12:00:220
2108799302,13cyclictest22948-21runrttasks10:18:140
21087993020,6cyclictest8174-21diskstats11:05:140
21087993012,5cyclictest6632-21df09:35:120
2108799301,16cyclictest30068-21uname07:45:220
21087993011,6cyclictest22057-21diskstats08:50:140
2108799301,13cyclictest2225-21dbus-daemon11:00:420
21087993010,7cyclictest0-21swapper/011:10:440
203402301,4sleep120355-21ntp_states10:10:251
121222301,4sleep112146-21open_inodes12:40:241
82122291,5sleep00-21swapper/008:12:570
38362291,5sleep10-21swapper/110:53:551
325572291,5sleep10-21swapper/109:16:411
320392291,5sleep00-21swapper/012:08:410
268312291,5sleep10-21swapper/110:29:251
21402291,5sleep00-21swapper/007:56:320
2108899294,4cyclictest81rcu_preempt12:16:081
2108899293,4cyclictest81rcu_preempt10:21:381
21088992919,6cyclictest24656-21ls11:50:011
2108899291,4cyclictest81rcu_preempt08:25:371
2108799297,7cyclictest13795-21iostat_ios12:45:210
2108799297,7cyclictest13795-21iostat_ios12:45:210
2108799293,13cyclictest26287-21irqstats07:35:200
2108799292,14cyclictest0-21swapper/009:15:520
2108799292,13cyclictest13011-21munin-run12:45:000
2108799291,13cyclictest2516-21/usr/sbin/munin09:25:100
21087992910,5cyclictest0-21swapper/010:20:120
189702291,5sleep10-21swapper/110:06:001
18572291,5sleep00-21swapper/010:48:590
170472291,6sleep10-21swapper/111:29:181
148242291,5sleep00-21swapper/011:20:410
135472291,24sleep113683-21/usr/sbin/munin12:45:171
135472291,24sleep113683-21/usr/sbin/munin12:45:161
88172281,5sleep10-21swapper/109:40:181
46272281,5sleep10-21swapper/108:04:401
40102281,5sleep10-21swapper/109:26:561
302412281,5sleep10-21swapper/112:04:291
24282281,5sleep10-21swapper/107:59:231
226812281,5sleep00-21swapper/011:44:060
2108899286,4cyclictest81rcu_preempt11:12:081
2108899285,4cyclictest81rcu_preempt11:52:011
2108899285,4cyclictest81rcu_preempt10:49:241
2108899285,4cyclictest81rcu_preempt08:11:511
2108899284,9cyclictest15668-21iostat_ios12:50:181
2108899284,8cyclictest29225-21diskstats10:35:151
2108899284,20cyclictest6071-21unixbench_singl08:05:321
2108899283,4cyclictest81rcu_preempt10:30:571
21088992819,5cyclictest4541-21fschecks_time10:55:151
21088992819,5cyclictest18040-21chrt11:30:221
2108899281,4cyclictest81rcu_preempt09:22:171
21088992813,8cyclictest24373-21iostat_ios07:30:201
21088992810,14cyclictest251262chrt08:57:431
2108799289,6cyclictest31191-21grep10:40:170
2108799289,6cyclictest20166-21df_inode08:45:130
2108799281,15cyclictest27904-21/usr/sbin/munin10:30:240
2108799281,13cyclictest24560-21taskset11:49:040
152922281,5sleep10-21swapper/109:56:591
151552281,5sleep00-21swapper/009:55:320
93862271,5sleep10-21swapper/112:35:081
290572271,5sleep00-21swapper/009:09:230
2108899275,4cyclictest81rcu_preempt08:15:331
2108899272,4cyclictest81rcu_preempt08:40:381
2108899271,4cyclictest81rcu_preempt07:25:021
2108899271,22cyclictest12284-21df_inode09:50:121
21088992710,13cyclictest4496-21aten_r4power_cu09:30:121
2108899270,4cyclictest81rcu_preempt11:17:541
2108899270,4cyclictest81rcu_preempt11:17:541
2108799276,6cyclictest8682-21unixbench_multi12:30:290
2108799275,11cyclictest3286-21runrttasks12:23:290
2108799271,13cyclictest15803-21uniq11:25:150
2108799271,12cyclictest17205-21runrttasks10:02:060
21087992710,5cyclictest3451-21/usr/sbin/munin10:50:300
21087992710,5cyclictest14260-21/usr/sbin/munin08:30:100
21087992710,5cyclictest11565-21gdbus08:29:380
21087992710,5cyclictest11565-21gdbus08:17:160
15742271,5sleep10-21swapper/112:14:521
121312271,4sleep10-21swapper/108:24:231
64032261,4sleep00-21swapper/008:08:360
230172261,5sleep10-21swapper/110:18:591
2108899266,15cyclictest0-21swapper/109:00:201
2108899265,4cyclictest81rcu_preempt11:21:231
2108899261,14cyclictest29290-21/usr/sbin/munin09:10:291
2108799269,4cyclictest30808-21runrttasks09:13:000
2108799267,5cyclictest81rcu_preempt12:30:000
2108799262,12cyclictest9988-21iostat12:35:190
2108799261,16cyclictest0-21swapper/012:16:310
2108799261,14cyclictest0-21swapper/009:44:010
2108799261,13cyclictest4633-21awk09:30:130
21087992610,13cyclictest3-21ksoftirqd/008:23:160
2108899251,20cyclictest10133-21aten_r4power_cu09:45:101
21087992511,10cyclictest24563-21/usr/sbin/munin07:30:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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