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2026-07-20 - 01:38

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 Sun Jul 19, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
206069912101192,13cyclictest211ktimersoftd/108:50:241
206059912031166,32cyclictest81rcu_preempt08:50:240
206069911811153,25cyclictest0-21swapper/107:25:111
206059911551120,23cyclictest0-21swapper/007:25:100
202692789743,30sleep10-21swapper/107:22:021
204372509462,32sleep00-21swapper/007:23:500
730521040,2sleep07304-21sshd09:36:510
237602800,4sleep10-21swapper/111:45:311
20606993912,4cyclictest81rcu_preempt09:40:221
179022361,31sleep117198-21/usr/sbin/munin10:05:221
78882351,30sleep02401-21NetworkManager08:14:140
22552350,6sleep12253-21sendmail08:00:001
210722351,29sleep121234-21df10:15:121
2060599351,12cyclictest26469-21munin-run10:30:010
79622340,3sleep0111rcuc/011:05:180
234732341,29sleep023482-21diskstats08:55:160
20606993322,7cyclictest29274-21aten_r4power_po07:45:131
2060599332,17cyclictest0-21swapper/008:05:230
20605993315,6cyclictest3-21ksoftirqd/009:08:320
20605993313,6cyclictest11867-21python12:40:280
57662321,27sleep15841-21df11:00:111
2060699322,16cyclictest7911-21ntp_states12:30:261
20606993213,6cyclictest0-21swapper/111:05:081
2060599327,12cyclictest21097-21fschecks_time11:40:160
20605993215,4cyclictest3-21ksoftirqd/009:40:220
2060599321,20cyclictest0-21swapper/010:07:260
188752321,4sleep118995-21df11:35:121
267282311,5sleep10-21swapper/109:04:201
2060699315,4cyclictest81rcu_preempt09:39:331
20606993111,16cyclictest247542chrt07:32:281
2060599315,5cyclictest81rcu_preempt07:55:230
2060599315,14cyclictest0-21swapper/011:25:230
2060599312,17cyclictest0-21swapper/009:15:280
20605993110,8cyclictest9982-21awk12:35:270
20605993110,6cyclictest3286-21runrttasks11:52:050
50362301,5sleep05099-21grep09:30:290
242432301,5sleep00-21swapper/010:21:390
2060699305,4cyclictest81rcu_preempt08:28:161
2060699305,3cyclictest81rcu_preempt10:38:081
2060699303,14cyclictest18147-21iostat08:40:201
2060699301,4cyclictest81rcu_preempt09:30:001
2060699301,16cyclictest28736-21iostat_ios12:00:191
20606993011,6cyclictest13318-21if_eth012:45:181
20606993010,4cyclictest81rcu_preempt08:00:271
20605993023,5cyclictest0-21swapper/008:23:410
20605993021,6cyclictest2695-21snmpd11:00:270
2060599302,16cyclictest17122-21/usr/sbin/munin11:30:140
2060599302,15cyclictest0-21swapper/007:37:480
2060599301,5cyclictest81rcu_preempt09:45:290
2060599301,4cyclictest81rcu_preempt10:04:470
2060599301,4cyclictest81rcu_preempt07:46:150
20605993013,5cyclictest25371-21df_inode09:00:130
20605993012,5cyclictest18817-21users08:40:310
2060599301,17cyclictest20213-21/usr/sbin/munin10:10:290
20605993011,6cyclictest27507-21users11:55:290
152162301,25sleep115224-21iostat_ios12:50:191
147952301,5sleep00-21swapper/011:24:580
147952301,5sleep00-21swapper/011:24:570
83822291,5sleep00-21swapper/012:30:480
67502291,5sleep00-21swapper/012:28:220
325952291,5sleep00-21swapper/007:53:040
302712291,5sleep00-21swapper/009:12:040
301652291,5sleep00-21swapper/010:39:430
287482291,5sleep00-21swapper/007:42:050
280072291,5sleep00-21swapper/010:31:470
277172291,5sleep10-21swapper/111:57:351
2060699298,16cyclictest4533-21wget09:30:171
2060699294,18cyclictest1916-21iostat_ios12:15:211
2060699294,18cyclictest13389-21diskstats11:20:161
2060699294,18cyclictest13389-21diskstats11:20:161
2060699293,19cyclictest14382-21iostat_ios08:30:211
2060699292,4cyclictest81rcu_preempt07:54:321
20606992922,5cyclictest0-21swapper/111:41:401
20606992920,5cyclictest2080-21cut10:50:161
2060699291,4cyclictest81rcu_preempt10:03:431
2060699291,4cyclictest81rcu_preempt09:21:581
20606992911,6cyclictest3286-21runrttasks10:25:001
2060699291,16cyclictest11283-21taskset09:48:581
2060599299,10cyclictest3-21ksoftirqd/011:47:580
2060599296,7cyclictest200972chrt08:45:210
2060599293,4cyclictest81rcu_preempt12:50:090
2060599293,4cyclictest81rcu_preempt12:12:360
2060599292,14cyclictest3609-21df12:20:130
2060599292,13cyclictest24124-21ntp_states07:30:270
140482291,5sleep00-21swapper/012:45:410
11732291,5sleep10-21swapper/110:46:341
106372291,4sleep010641-21pidof11:11:000
105432291,5sleep10-21swapper/112:38:471
94122281,4sleep00-21swapper/008:15:340
81172281,5sleep10-21swapper/108:15:041
77432281,5sleep10-21swapper/108:12:461
58842281,5sleep10-21swapper/108:07:551
49832281,5sleep10-21swapper/110:55:571
40222281,4sleep00-21swapper/008:03:020
33092281,5sleep10-21swapper/112:20:051
318042281,4sleep00-21swapper/010:42:000
315292281,5sleep10-21swapper/112:07:591
286802281,5sleep10-21swapper/107:41:231
246712281,5sleep10-21swapper/108:57:421
2060699289,6cyclictest11548-21/usr/sbin/munin09:50:241
2060699286,4cyclictest40250irq/92-i91510:30:001
2060699285,4cyclictest81rcu_preempt11:18:421
2060699283,4cyclictest81rcu_preempt09:05:401
20606992818,6cyclictest16170-21unixbench_multi11:25:291
2060699281,14cyclictest16256-21irqstats08:35:191
20606992811,13cyclictest25206-21/usr/sbin/munin07:35:231
2060599288,5cyclictest0-21swapper/009:22:380
2060599282,14cyclictest0-21swapper/009:26:550
2060599282,13cyclictest4132-21perl10:55:160
20605992812,5cyclictest11564-21packagekitd12:02:180
20605992811,5cyclictest81rcu_preempt09:55:110
2060599281,14cyclictest32548-21df_inode10:45:140
20605992810,15cyclictest0-21swapper/012:08:570
205882281,5sleep10-21swapper/110:12:571
171262281,5sleep00-21swapper/008:37:310
152132281,5sleep00-21swapper/008:32:050
116542281,5sleep10-21swapper/108:24:061
108022281,5sleep10-21swapper/111:12:441
303682271,5sleep10-21swapper/109:13:071
281402271,5sleep10-21swapper/110:33:101
258642271,5sleep10-21swapper/111:52:491
210412271,5sleep10-21swapper/108:48:571
2060699274,3cyclictest81rcu_preempt09:17:231
2060699273,8cyclictest30979-21iostat_ios10:40:211
2060699273,3cyclictest81rcu_preempt12:41:531
2060599274,17cyclictest1611-21diskstats12:15:150
2060599274,17cyclictest13283-21munin-run09:55:000
2060599272,6cyclictest2036-21/usr/sbin/munin10:50:160
2060599272,12cyclictest12276-21grep08:25:170
2060599271,15cyclictest0-21swapper/011:16:030
2060599271,13cyclictest19051-21fschecks_count11:35:140
51882261,4sleep10-21swapper/112:25:031
2060699263,4cyclictest81rcu_preempt09:56:061
2060699262,10cyclictest31974-21cut12:10:111
2060599261,11cyclictest22478-21pidof10:18:010
20606992515,6cyclictest17133-21df_inode11:30:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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