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2026-08-13 - 18:22

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 Thu Aug 13, 2026 12:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
93719912381229,6cyclictest0-21swapper/107:25:081
93709911981162,27cyclictest23214-21kworker/0:007:25:070
93719911811151,23cyclictest14987-21awk07:35:261
93032566518,32sleep00-21swapper/007:24:530
92002512417,30sleep10-21swapper/107:23:481
9371994614,6cyclictest22-21ksoftirqd/111:28:311
937199439,6cyclictest22-21ksoftirqd/108:43:341
937199438,6cyclictest22-21ksoftirqd/108:50:211
937199438,6cyclictest22-21ksoftirqd/108:50:201
937199438,6cyclictest12060-21/usr/sbin/munin07:30:211
937199428,6cyclictest22-21ksoftirqd/112:25:251
937199428,6cyclictest22-21ksoftirqd/110:43:041
937199428,6cyclictest22-21ksoftirqd/109:21:371
937199428,5cyclictest9348-21/usr/sbin/munin11:40:161
937199428,5cyclictest31072-21/usr/sbin/munin11:10:221
937199427,6cyclictest22-21ksoftirqd/111:05:501
937199422,4cyclictest81rcu_preempt07:40:281
937199417,5cyclictest29494-21/usr/sbin/munin08:15:131
937199416,6cyclictest4501-21/usr/sbin/munin08:35:121
937199416,6cyclictest310-21sshd08:24:381
937199416,6cyclictest22-21ksoftirqd/111:20:261
937199416,5cyclictest22-21ksoftirqd/109:25:101
937199415,6cyclictest22-21ksoftirqd/110:35:191
9371994115,6cyclictest22-21ksoftirqd/111:48:161
9371994110,5cyclictest22-21ksoftirqd/109:32:031
937099411,14cyclictest0-21swapper/008:28:210
937199408,5cyclictest8157-21/usr/sbin/munin08:45:161
937199408,5cyclictest441-21df09:50:131
937199407,6cyclictest22-21ksoftirqd/110:23:151
937199407,6cyclictest22-21ksoftirqd/109:15:111
937199407,6cyclictest22-21ksoftirqd/109:14:501
937199406,6cyclictest877-21cron12:42:001
937199406,6cyclictest3623-21cstates12:50:131
937199406,6cyclictest22-21ksoftirqd/112:32:491
937199406,6cyclictest22-21ksoftirqd/112:32:491
937199406,6cyclictest22-21ksoftirqd/110:26:301
937199406,6cyclictest22-21ksoftirqd/109:07:241
937199406,6cyclictest18175-21cstates07:45:121
937199405,6cyclictest26088-21sshd12:24:491
937199405,6cyclictest22-21ksoftirqd/112:10:211
9371994022,7cyclictest22-21ksoftirqd/109:55:251
9371994022,4cyclictest22-21ksoftirqd/109:41:191
9371994013,4cyclictest22-21ksoftirqd/111:02:481
937199399,4cyclictest81rcu_preempt09:45:131
937199398,6cyclictest22-21ksoftirqd/110:32:011
937199398,10cyclictest530-21/usr/sbin/munin08:25:101
937199397,4cyclictest0-21swapper/112:46:271
937199396,6cyclictest22-21ksoftirqd/108:57:591
937199396,5cyclictest23823-21cstates08:00:131
937199395,6cyclictest23393-21idleruntime10:50:181
937199395,6cyclictest22-21ksoftirqd/110:14:571
937199395,6cyclictest11375-21sshd10:19:491
937199395,6cyclictest11375-21sshd10:19:491
937199395,4cyclictest81rcu_preempt10:04:491
937199393,6cyclictest32283-21wget11:15:101
9371993925,4cyclictest22-21ksoftirqd/110:05:271
9371993910,5cyclictest22-21ksoftirqd/112:15:011
937199387,6cyclictest20982-21/usr/sbin/munin10:45:231
937199385,4cyclictest81rcu_preempt09:39:591
9371993815,9cyclictest22-21ksoftirqd/109:00:131
937199378,11cyclictest16303-21cron11:55:591
937199377,8cyclictest22-21ksoftirqd/111:36:001
937199374,6cyclictest22-21ksoftirqd/108:05:151
937199374,6cyclictest22-21ksoftirqd/107:55:101
937199372,4cyclictest0-21swapper/107:50:121
9371993723,4cyclictest22-21ksoftirqd/112:10:001
9371993723,4cyclictest22-21ksoftirqd/111:53:001
9371993721,4cyclictest22-21ksoftirqd/108:10:231
937199366,6cyclictest2428-21/usr/sbin/munin08:30:291
937199365,4cyclictest81rcu_preempt10:55:191
9371993622,4cyclictest22-21ksoftirqd/111:30:141
937099367,5cyclictest81rcu_preempt09:25:110
9370993626,6cyclictest2695-21snmpd11:47:370
176892361,5sleep116878-21/usr/sbin/munin12:00:251
131002361,4sleep011565-21gdbus10:23:000
937199351,6cyclictest22-21ksoftirqd/112:35:131
937099352,13cyclictest9047-21grep10:10:310
937099351,22cyclictest32521-21irqstats12:40:200
9370993511,12cyclictest4111-21grep12:50:220
937099349,13cyclictest2225-21dbus-daemon11:40:170
937099342,20cyclictest7110-21/usr/sbin/munin08:40:230
52392321,9sleep00-21swapper/011:28:170
271923211,6sleep03-21ksoftirqd/012:45:540
937099316,13cyclictest21484-21http_loadtime10:45:170
937099314,14cyclictest0-21swapper/007:45:110
937099312,15cyclictest28742-21iostat12:30:180
937099312,15cyclictest28742-21iostat12:30:180
937099311,4cyclictest81rcu_preempt08:37:240
937099311,4cyclictest81rcu_preempt07:56:560
9370993113,5cyclictest2565-21ntp_states11:20:240
9370993113,5cyclictest23871-21df_inode08:00:140
158642311,26sleep015928-21iostat10:30:190
937099308,10cyclictest0-21swapper/011:37:260
937099306,4cyclictest81rcu_preempt07:32:380
937099305,12cyclictest0-21swapper/012:35:190
937099303,14cyclictest28345-21python08:10:280
9370993015,12cyclictest3-21ksoftirqd/011:16:500
937099301,4cyclictest81rcu_preempt12:11:020
937099301,4cyclictest81rcu_preempt11:52:270
937099301,4cyclictest81rcu_preempt09:49:460
937099301,4cyclictest81rcu_preempt08:07:500
9370993011,6cyclictest15578-21iostat_ios11:55:220
937099301,15cyclictest22787-21taskset12:15:140
937099301,14cyclictest11565-21gdbus08:59:120
937099300,3cyclictest81rcu_preempt07:36:260
316892301,5sleep00-21swapper/011:10:490
200412301,5sleep00-21swapper/012:05:400
181782301,5sleep00-21swapper/012:00:480
937099299,15cyclictest174262chrt07:41:290
937099297,4cyclictest40250irq/92-i91510:35:150
937099294,4cyclictest81rcu_preempt09:37:230
9370992921,5cyclictest25839-21timerandwakeup10:55:280
9370992917,7cyclictest20866-21ls07:50:280
937099291,4cyclictest81rcu_preempt12:20:120
937099291,4cyclictest81rcu_preempt10:52:180
937099291,4cyclictest81rcu_preempt10:04:550
937099291,4cyclictest81rcu_preempt09:13:130
937099291,4cyclictest81rcu_preempt08:46:550
937099291,4cyclictest81rcu_preempt08:22:000
9370992911,5cyclictest6061-21hddtemp_smartct11:30:160
937099291,14cyclictest10330-21latency10:15:220
937099291,14cyclictest10330-21latency10:15:220
304972291,5sleep00-21swapper/008:15:390
280792291,5sleep00-21swapper/011:02:140
204582291,5sleep00-21swapper/010:41:160
937099288,16cyclictest11041-21mailstats08:50:250
937099288,16cyclictest11041-21mailstats08:50:250
937099282,13cyclictest14217-21sort09:00:160
937099280,4cyclictest81rcu_preempt09:42:520
207962281,5sleep00-21swapper/009:16:140
937099277,6cyclictest14281-21grep10:25:240
937099272,21cyclictest0-21swapper/012:25:270
937099272,14cyclictest0-21swapper/008:32:300
937099272,13cyclictest11565-21gdbus09:21:360
937099271,15cyclictest0-21swapper/011:05:100
937099271,14cyclictest1297-21sed09:50:270
937099271,10cyclictest17411-21munin-run09:10:000
937099264,12cyclictest81rcu_preempt10:05:160
937099261,7cyclictest25923-21seq09:30:220
937099251,15cyclictest0-21swapper/009:57:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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