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2026-07-06 - 19:36

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 Mon Jul 06, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23349912181207,7cyclictest13143-21df07:50:131
23349911011092,6cyclictest0-21swapper/107:25:061
18492578531,32sleep00-21swapper/007:20:410
18562577531,30sleep10-21swapper/107:20:461
233399238206,22cyclictest0-21swapper/007:25:060
233399143118,8cyclictest0-21swapper/007:50:140
114382970,7sleep1233499cyclictest09:10:241
58062730,4sleep028501-21kworker/0:008:55:250
323282640,4sleep1211ktimersoftd/110:05:271
31282620,4sleep03133-21needreboot11:40:210
233499576,18cyclictest2695-21snmpd11:54:331
233499566,15cyclictest8298-21sh11:55:151
233499557,16cyclictest19101-21iostat08:05:191
233499555,17cyclictest14987-21taskset12:11:001
233499546,15cyclictest8915-21taskset07:39:561
233499544,15cyclictest14508-21fschecks_time10:45:161
233499543,17cyclictest24887-21cat12:40:001
233499535,15cyclictest13299-21taskset12:07:561
233499526,7cyclictest0-21swapper/108:20:301
233499526,16cyclictest5664-21cat07:30:171
233499526,13cyclictest6857-21/usr/sbin/munin09:00:271
233499524,15cyclictest13990-21chrt09:17:461
233499524,14cyclictest3127-21aten_r4power_en08:50:121
233499524,14cyclictest2401-21NetworkManager10:59:251
233499523,15cyclictest25543-21latency_hist09:50:011
233499523,15cyclictest23537-21cpu11:10:121
233499516,15cyclictest21721-21cat11:05:111
233499515,15cyclictest17922-21chrt08:00:371
233499514,16cyclictest2114-21runrttasks10:11:261
233499514,14cyclictest20608-21sshd12:25:441
233499514,14cyclictest20608-21sshd12:25:431
233499513,17cyclictest19114-21runrttasks12:24:421
233499513,15cyclictest32727-21latency_hist11:35:011
233499513,15cyclictest1009-21latency_hist08:45:001
233499511,16cyclictest16075-21chrt09:24:441
233499511,16cyclictest16075-21chrt09:24:441
233499510,18cyclictest23328-21chrt09:41:561
233499510,18cyclictest11919-21chrt10:39:301
233499510,16cyclictest31015-21chrt10:03:371
233499506,16cyclictest17284-21smartctl-wrappe09:25:261
233499503,15cyclictest4961-21sshd08:55:101
233499502,17cyclictest29778-21chrt08:35:101
233499502,16cyclictest8075-21chrt10:28:341
233499500,17cyclictest26732-21chrt11:17:031
233499495,16cyclictest2594-21df11:40:131
233499495,14cyclictest4913-21df10:20:141
233499494,16cyclictest9280-21cat07:40:121
233499494,15cyclictest30169-21chrt12:52:081
233499494,13cyclictest19777-21runrttasks09:34:131
233499493,15cyclictest27031-21chrt09:51:251
233499493,14cyclictest28724-21ntp_offset08:30:231
233499493,14cyclictest15823-21df_inode12:15:151
233499492,16cyclictest349-21chrt11:35:041
233499485,15cyclictest10394-21grep12:00:191
233499483,16cyclictest16018-21chrt07:55:341
233499482,16cyclictest5882-21chrt11:49:011
233499482,16cyclictest26291-21chrt12:41:061
233499482,15cyclictest28447-21chrt12:48:451
233499481,17cyclictest30366-21chrt11:25:371
233499481,17cyclictest21466-21chrt09:37:161
233499481,16cyclictest9780-21chrt10:31:491
233499481,16cyclictest21371-21chrt11:04:541
233499481,14cyclictest22590-21chrt12:31:491
233499480,18cyclictest23662-21chrt08:16:521
233499480,17cyclictest4122-21chrt10:16:431
233499472,17cyclictest28614-21chrt11:21:541
233499472,15cyclictest13505-21chrt10:41:151
233499472,15cyclictest12576-21chrt07:48:481
233499471,17cyclictest2896-21chrt08:49:511
233499462,27cyclictest26866-21ntpq08:25:261
233499461,15cyclictest28634-21sed09:55:281
233499454,15cyclictest21220-21awk08:10:251
233499403,14cyclictest15906-21/usr/sbin/munin10:50:151
233499395,15cyclictest9290-21cat09:05:191
254712361,4sleep025545-21iostat12:40:180
128062361,31sleep012898-21sort12:05:300
233399355,6cyclictest10670-21needreboot12:00:260
191002350,9sleep0233399cyclictest08:05:200
2333993424,6cyclictest9238-21wget09:05:170
44362331,4sleep011564-21packagekitd10:19:580
233399332,19cyclictest8665-21df_inode10:30:140
233399331,13cyclictest0-21swapper/010:06:530
233399329,4cyclictest81rcu_preempt08:18:420
233399325,5cyclictest0-21swapper/009:58:410
2333993212,6cyclictest15828-21df_inode12:15:150
233399321,13cyclictest5118-21aten_r4power_cu07:30:100
293752311,26sleep029528-21fschecks_time11:25:160
233399316,4cyclictest81rcu_preempt08:00:160
233399316,11cyclictest27488-21kernelversion12:45:210
233399312,4cyclictest81rcu_preempt10:38:160
233399311,16cyclictest29780-21/usr/sbin/munin08:35:110
233399311,11cyclictest81rcu_preempt11:53:070
233399302,4cyclictest81rcu_preempt10:25:310
2333993020,5cyclictest21626-21wget11:05:110
233399301,4cyclictest81rcu_preempt12:53:020
233399301,4cyclictest81rcu_preempt11:55:020
233399301,4cyclictest81rcu_preempt10:57:060
233399301,4cyclictest81rcu_preempt10:10:530
233399301,4cyclictest81rcu_preempt09:22:080
233399301,4cyclictest81rcu_preempt09:22:070
233399301,4cyclictest81rcu_preempt09:04:420
233399301,4cyclictest81rcu_preempt08:48:340
233399301,4cyclictest81rcu_preempt07:40:580
233399301,4cyclictest81rcu_preempt07:35:220
233399301,18cyclictest0-21swapper/007:55:140
2333993011,5cyclictest20308-21diskstats09:35:130
233399296,12cyclictest2329-21cyclictest09:18:450
233399295,13cyclictest11565-21gdbus07:49:070
233399291,4cyclictest81rcu_preempt11:34:110
233399291,4cyclictest81rcu_preempt08:54:270
2333992911,5cyclictest11565-21gdbus08:14:240
233399288,7cyclictest19546-21ls12:25:140
233399288,7cyclictest19546-21ls12:25:140
233399286,11cyclictest27374-21taskset08:26:130
233399284,17cyclictest24449-21diskstats08:20:150
233399281,4cyclictest81rcu_preempt10:49:260
233399281,4cyclictest81rcu_preempt10:23:140
233399281,4cyclictest81rcu_preempt09:10:310
2333992811,5cyclictest11565-21gdbus12:10:450
233399281,14cyclictest32463-21/usr/sbin/munin08:40:230
233399281,14cyclictest11564-21packagekitd10:02:060
247202271,5sleep00-21swapper/011:10:410
233399278,6cyclictest0-21swapper/008:30:220
233399278,5cyclictest21383-21cron11:05:000
233399272,4cyclictest81rcu_preempt09:44:220
233399272,13cyclictest956-21chrt11:35:180
233399272,12cyclictest19566-21pidof09:32:000
2333992718,5cyclictest16928-21latency09:25:190
233399271,4cyclictest81rcu_preempt11:48:480
233399271,15cyclictest24102-21fschecks_count09:45:150
233399271,13cyclictest26159-21hddtemp_smartct09:50:160
233399271,12cyclictest17835-21fschecks_time12:20:160
233399270,4cyclictest81rcu_preempt12:36:140
172362271,5sleep00-21swapper/010:51:020
233399269,5cyclictest11565-21gdbus10:41:100
2333992612,10cyclictest25696-21uniq11:15:130
233399261,13cyclictest21186-21/usr/sbin/munin12:30:170
233399241,15cyclictest0-21swapper/011:21:510
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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