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2026-05-15 - 12:41

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 May 15, 2026 00:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
320219912621222,27cyclictest0-21swapper/019:25:150
320229911161100,13cyclictest0-21swapper/119:25:111
319252577532,30sleep10-21swapper/119:24:341
319032513416,31sleep00-21swapper/019:24:190
215082440,5sleep03202199cyclictest21:45:230
3202199387,14cyclictest667-21taskset23:41:420
3202199381,6cyclictest6697-21awk21:05:250
3202199381,19cyclictest3468-21timerwakeupswit19:30:270
32022993624,8cyclictest21509-21/usr/sbin/munin21:45:231
3202199361,14cyclictest11570-21cron19:55:010
32022993520,12cyclictest26444-21/usr/sbin/munin22:00:321
32021993512,6cyclictest24861-21/usr/sbin/munin21:55:150
3202199351,14cyclictest29415-21timerandwakeup22:05:280
3202199351,14cyclictest22988-21/usr/sbin/munin00:40:280
3202199348,5cyclictest8548-21taskset00:04:050
3202199342,14cyclictest19746-21/usr/sbin/munin21:40:220
3202199341,12cyclictest771-21/usr/sbin/munin20:50:230
32021993410,6cyclictest9987-21/usr/sbin/munin22:40:240
225972341,4sleep022604-21diskstats23:15:150
84432330,9sleep13202299cyclictest00:03:001
67352331,28sleep06784-21latency_hist00:00:000
3202199338,7cyclictest21669-21hwlatdetect20:20:160
3202199331,15cyclictest17716-21fschecks_count20:10:140
3202199331,13cyclictest2184-21sensors_temp23:45:270
3202199331,13cyclictest19727-21fschecks_time20:15:160
32021993310,6cyclictest28195-21taskset23:30:130
250152331,4sleep125042-21hddtemp_smartct21:55:171
137442331,28sleep113750-21sh22:50:261
322422321,5sleep10-21swapper/120:49:461
32022993210,6cyclictest2563-21seq23:46:301
3202199326,6cyclictest24483-21taskset20:27:150
3202199321,5cyclictest6948-21taskset22:33:260
3202199321,26cyclictest4694-21ntp_states21:00:250
3202199321,12cyclictest13769-21/usr/sbin/munin22:50:260
32021993210,6cyclictest24909-21sort23:20:210
308642321,27sleep031028-21fschecks_time20:45:160
275692321,27sleep12225-21dbus-daemon23:27:391
85582311,4sleep18579-21iostat_ios19:45:181
32022993117,10cyclictest9399-21iostat_ios00:05:221
3202199313,17cyclictest0-21swapper/000:51:340
3202199313,16cyclictest0-21swapper/022:45:250
3202199312,13cyclictest11564-21packagekitd22:04:330
3202199311,5cyclictest2150-21df20:55:130
3202199311,13cyclictest14622-21seq21:26:130
3202199311,13cyclictest11789-21wget19:55:100
3202199311,13cyclictest0-21swapper/021:11:430
3202199311,12cyclictest24219-21taskset21:53:170
3202199311,11cyclictest4736-21runrttasks23:53:420
3202199311,11cyclictest20116-21chrt23:08:220
179192311,5sleep10-21swapper/100:28:491
108972311,5sleep10-21swapper/121:16:491
3202199307,6cyclictest17699-21taskset00:26:300
3202199306,6cyclictest40250irq/92-i91500:05:210
3202199304,7cyclictest3200-21taskset22:23:340
3202199301,5cyclictest16881-21runrttasks20:06:280
3202199301,4cyclictest3286-21runrttasks19:42:590
3202199301,27cyclictest0-21swapper/022:15:300
3202199301,12cyclictest4756-21if_err_eth019:35:180
3202199301,12cyclictest13903-21expr20:00:130
3202199301,12cyclictest11927-21sort21:20:190
32021993010,5cyclictest15806-21python22:55:270
206632301,25sleep12225-21dbus-daemon20:16:501
76892291,5sleep10-21swapper/119:43:401
66912291,5sleep10-21swapper/123:59:341
3202299294,19cyclictest22606-21diskstats23:15:151
3202299292,23cyclictest30430-21iostat23:35:201
3202299292,22cyclictest23319-21df_inode20:25:121
32022992918,7cyclictest5229-21cron22:29:591
3202199293,23cyclictest0-21swapper/021:32:510
32021992918,7cyclictest5240-21sh22:29:590
3202199291,5cyclictest18513-21seq21:37:420
3202199291,16cyclictest0-21swapper/000:22:330
3202199291,13cyclictest72522chrt22:35:020
3202199291,12cyclictest31280-21wc22:10:280
3202199291,11cyclictest17623-21grep23:00:290
294692291,5sleep10-21swapper/123:32:571
271402291,5sleep10-21swapper/100:51:341
215702291,5sleep00-21swapper/000:37:450
161952291,5sleep10-21swapper/122:56:491
108482291,5sleep10-21swapper/122:44:491
93492281,5sleep00-21swapper/019:46:250
71372281,5sleep10-21swapper/121:06:441
56162281,5sleep10-21swapper/119:36:491
36272281,5sleep10-21swapper/119:30:371
32022992813,11cyclictest5391-21/usr/sbin/munin22:30:221
3202199284,18cyclictest25202-21diskstats20:30:140
3202199282,12cyclictest196482sleep000:32:130
32021992818,7cyclictest29122-21grep20:40:150
3202199281,24cyclictest0-21swapper/000:45:190
3202199281,16cyclictest0-21swapper/000:10:540
263772281,5sleep10-21swapper/120:32:311
242072281,5sleep10-21swapper/123:20:101
221122281,5sleep10-21swapper/123:14:401
218922281,5sleep00-21swapper/023:12:210
182782281,5sleep10-21swapper/123:03:491
181902281,5sleep10-21swapper/100:30:031
161262281,5sleep10-21swapper/100:24:401
147782281,5sleep10-21swapper/121:27:531
140662281,5sleep00-21swapper/000:17:570
139262281,4sleep10-21swapper/100:16:321
88322271,5sleep10-21swapper/122:38:321
5752271,5sleep10-21swapper/123:40:451
32022992718,5cyclictest23733-21wc21:50:291
32022992717,6cyclictest17691-21cat21:35:221
3202299271,23cyclictest4371-21http_loadtime21:00:181
3202199274,11cyclictest0-21swapper/023:37:230
3202199271,21cyclictest26192-21wget23:25:130
3202199271,11cyclictest10857-21chrt21:16:210
206282271,4sleep10-21swapper/121:44:591
13802271,5sleep10-21swapper/120:51:511
114482271,5sleep10-21swapper/119:53:481
32022992617,6cyclictest22-21ksoftirqd/120:40:171
32022992616,6cyclictest27468-21load20:35:231
32022992610,11cyclictest20374-21df_inode00:35:171
281302261,5sleep00-21swapper/020:36:130
131122261,5sleep10-21swapper/119:56:311
128052261,4sleep10-21swapper/121:21:521
3202299259,12cyclictest0-21swapper/122:10:231
3202299258,4cyclictest15746-21iostat21:30:201
3202299252,19cyclictest0-21swapper/120:00:171
3202299252,17cyclictest11637-21iostat_ios22:45:211
32022992517,5cyclictest17492-21aten_r4power_vo20:10:101
32022992516,5cyclictest28981-21cat22:05:211
32022992516,5cyclictest11208-21ls00:10:181
32022992515,6cyclictest3286-21runrttasks20:55:141
32022992416,5cyclictest8198-21if_eth021:10:191
32022992414,6cyclictest901-21runrttasks22:15:331
32022992414,6cyclictest21341-21sort20:20:101
32022992413,7cyclictest2695-21snmpd23:53:331
32022992412,7cyclictest24481-21irqstats00:45:201
3202299237,13cyclictest15904-21fschecks_count20:05:181
32022992315,5cyclictest22-21ksoftirqd/122:20:191
32022992315,5cyclictest18700-21cpu23:05:121
32022992213,5cyclictest22-21ksoftirqd/100:40:381
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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