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2026-05-06 - 19:22

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 376 highest latencies:
System rack9slot4s (updated Wed May 06, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
76289912611225,32cyclictest7877-21aten_r4power_vo07:25:101
73202658611,31sleep10-21swapper/107:22:211
72262546500,31sleep00-21swapper/007:21:210
762799152127,18cyclictest7874-21wget07:25:110
116842950,8sleep0762799cyclictest11:50:140
7628996917,16cyclictest32037-21sshd11:17:451
7628996917,15cyclictest7037-21iostat_ios08:45:181
7628996718,15cyclictest23391-21grep10:55:141
7628996717,16cyclictest4194-21taskset10:05:021
7628996618,15cyclictest30480-21df12:40:121
7628996618,14cyclictest21832-21memory10:50:201
7628996617,15cyclictest22320-21taskset12:18:111
7628996613,15cyclictest15785-21df_inode10:35:141
7628996611,22cyclictest18895-21taskset10:42:511
7628996517,15cyclictest5168-21irqstats08:40:201
7628996417,16cyclictest10767-21vmstat11:45:291
7628996416,15cyclictest29582-21taskset12:35:311
7628996414,16cyclictest28625-21latency_hist11:10:011
7628996318,16cyclictest31760-21smartctl08:25:161
7628996318,15cyclictest14667-21cat07:40:171
7628996317,15cyclictest21058-21wc10:50:001
7628996317,15cyclictest12814-21chrt11:52:071
7628996316,16cyclictest14266-21df09:05:141
7628996316,15cyclictest7347-21chrt11:39:041
7628996316,15cyclictest5171-21chrt11:30:561
7628996316,15cyclictest28901-21cat09:45:021
7628996316,15cyclictest21268-21chrt07:55:471
7628996316,15cyclictest19560-21start-stop-daem07:53:041
7628996316,14cyclictest17241-21chrt09:11:371
7628996315,15cyclictest4182-21latency_hist10:05:011
7628996315,14cyclictest26872-21users08:10:291
7628996315,14cyclictest25420-21/usr/sbin/munin11:00:181
7628996216,15cyclictest9103-21chrt11:42:361
7628996216,14cyclictest22665-21chrt12:20:011
7628996215,15cyclictest22800-21chrt08:00:261
7628996215,15cyclictest13628-21chrt07:36:451
7628996215,15cyclictest12023-21df10:25:101
7628996215,15cyclictest11586-21chrt08:56:381
7628996215,14cyclictest26291-21wc12:30:001
7628996214,17cyclictest9674-21runrttasks08:51:161
7628996214,17cyclictest18543-21runrttasks12:07:571
7628996118,11cyclictest16826-21ntp_states07:45:231
7628996117,16cyclictest32661-21cat12:45:181
7628996117,16cyclictest29558-21cat08:20:131
7628996116,15cyclictest19447-21cat12:10:171
7628996115,13cyclictest27173-21sed12:30:211
7628996114,16cyclictest968-21sh08:30:131
7628996114,15cyclictest16542-21chrt12:01:401
7628996113,13cyclictest1615-21chrt09:55:391
7628996016,16cyclictest18228-21smartctl09:15:171
7628996016,15cyclictest31075-21cat09:50:101
7628996016,15cyclictest31075-21cat09:50:101
7628996013,16cyclictest6161-21aten_r4power_po10:10:111
7628995916,15cyclictest1702-21cat12:50:101
7628995913,16cyclictest14658-21chrt11:56:461
7628995912,15cyclictest11717-21chrt07:31:481
7628995912,15cyclictest11717-21chrt07:31:481
7628995911,21cyclictest13394-21taskset09:00:421
7628995911,12cyclictest27040-21wc09:40:011
7628995816,15cyclictest4314-21runrttasks08:39:161
243402580,7sleep0762799cyclictest08:05:200
7628995614,10cyclictest24617-21ps08:05:251
7628995529,19cyclictest22100-21iostat_ios09:25:191
7628995520,12cyclictest3286-21runrttasks11:20:171
7628995515,14cyclictest15339-21latency_hist10:35:011
7628995514,15cyclictest24196-21ntpq09:30:221
7628995416,15cyclictest8675-21runrttasks10:15:221
7628995323,17cyclictest30215-21taskset11:13:211
7628995315,16cyclictest3286-21runrttasks09:20:381
7628995315,15cyclictest29124-21runrttasks08:19:111
7628995313,14cyclictest10365-21smartctl10:20:171
7628995217,16cyclictest30486-21taskset09:47:231
7628995213,15cyclictest0-21swapper/111:25:101
20682430,2sleep02066-21munin-plugin-st10:00:000
144232370,3sleep041ktimersoftd/007:40:140
301002360,8sleep0762799cyclictest09:45:280
762799351,13cyclictest0-21swapper/009:13:310
762799342,7cyclictest81rcu_preempt12:20:000
762799341,22cyclictest0-21swapper/007:55:100
762799341,13cyclictest81rcu_preempt08:25:290
762799341,13cyclictest0-21swapper/010:02:320
762799341,13cyclictest0-21swapper/008:04:490
762799337,13cyclictest0-21swapper/010:55:250
762799331,15cyclictest9021-21grep10:15:280
762799331,14cyclictest0-21swapper/011:13:130
281352330,7sleep00-21swapper/008:15:210
131112331,28sleep013184-21ls09:00:280
762799325,4cyclictest81rcu_preempt07:35:100
7627993213,5cyclictest6569-21perl10:10:160
7627993213,5cyclictest18469-21iostat07:50:190
762799311,4cyclictest81rcu_preempt11:32:070
762799311,4cyclictest81rcu_preempt09:22:420
762799311,4cyclictest81rcu_preempt08:56:170
7627993112,6cyclictest11565-21gdbus08:39:570
7627993111,6cyclictest18567-21taskset12:08:110
224742311,5sleep00-21swapper/010:51:030
111462311,5sleep00-21swapper/011:49:190
762799309,6cyclictest27894-21timerandwakeup11:05:270
762799308,11cyclictest4595-21fschecks_count10:05:150
762799306,12cyclictest81rcu_preempt12:35:280
762799302,17cyclictest8947-21kernelversion08:50:200
762799301,4cyclictest81rcu_preempt12:46:280
762799301,4cyclictest81rcu_preempt09:53:050
762799301,4cyclictest81rcu_preempt09:53:050
762799301,12cyclictest81rcu_preempt09:44:020
7627993010,7cyclictest3823-21sort11:30:010
762799300,4cyclictest81rcu_preempt09:36:210
762799300,4cyclictest81rcu_preempt09:06:060
762799300,4cyclictest81rcu_preempt08:49:340
232082301,5sleep00-21swapper/009:29:580
150212301,5sleep00-21swapper/010:31:470
118182301,5sleep00-21swapper/007:32:530
118182301,5sleep00-21swapper/007:32:530
762799294,4cyclictest81rcu_preempt12:27:280
762799291,4cyclictest81rcu_preempt11:57:190
762799291,4cyclictest81rcu_preempt11:40:300
762799290,4cyclictest81rcu_preempt12:04:550
762799290,4cyclictest81rcu_preempt11:20:360
264402291,5sleep00-21swapper/011:03:040
242812291,5sleep00-21swapper/012:23:550
23692291,4sleep00-21swapper/008:34:350
187362291,5sleep00-21swapper/010:41:110
111512291,5sleep00-21swapper/010:20:350
762799282,22cyclictest19891-21awk12:10:270
762799282,13cyclictest17236-21grep07:45:280
762799281,4cyclictest81rcu_preempt12:43:580
762799281,4cyclictest81rcu_preempt08:42:280
762799281,13cyclictest18666-21rt-features09:15:260
7627992811,12cyclictest6415-21memory11:35:240
318422281,5sleep00-21swapper/011:15:440
29892281,3sleep00-21swapper/012:51:210
279582281,5sleep00-21swapper/012:33:080
272952280,23sleep027296-21sshd08:14:450
762799273,3cyclictest81rcu_preempt10:35:110
248212271,4sleep00-21swapper/009:32:120
762799269,6cyclictest13297-21taskset10:28:220
7627992615,5cyclictest19866-21iostat_ios10:45:200
762799251,16cyclictest0-21swapper/008:23:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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