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2026-05-27 - 21:45

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 Wed May 27, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
135969912641,1245cyclictest18029-21apt-get07:35:001
132082657611,31sleep10-21swapper/107:21:311
135312565519,31sleep00-21swapper/007:24:550
1359599248204,19cyclictest18011-21munin-run07:35:000
1359599553,17cyclictest4732-21iostat_ios11:15:200
13595995511,6cyclictest23608-21df10:40:120
1359599541,15cyclictest14263-21/usr/sbin/munin08:50:200
1359599493,17cyclictest28818-21python08:00:290
13595994918,5cyclictest17094-21wc08:55:280
1359599491,15cyclictest26957-21/usr/sbin/munin07:55:310
1359599462,13cyclictest22623-21ntp_states09:10:250
1359599451,16cyclictest11565-21gdbus12:49:120
13595994412,8cyclictest20260-21fschecks_count09:05:150
13595994412,8cyclictest20260-21fschecks_count09:05:140
1359599364,16cyclictest14394-21ntp_states11:40:250
1359599353,14cyclictest2225-21dbus-daemon10:15:170
61122331,28sleep16184-21hddtemp_smartct12:45:151
230792331,29sleep12695-21snmpd10:39:221
1359699335,4cyclictest81rcu_preempt08:46:571
13595993316,13cyclictest2221-21cron11:55:010
13596993215,14cyclictest22-21ksoftirqd/109:20:101
13596993211,7cyclictest28431-21sendmail_mailtr09:25:281
13596993211,6cyclictest11565-21gdbus07:50:511
1359699314,20cyclictest31144-21diskstats11:00:131
13596993117,8cyclictest20508-21iostat_ios09:05:191
13596993117,8cyclictest20508-21iostat_ios09:05:191
1359699311,5cyclictest81rcu_preempt12:11:471
1359699311,4cyclictest81rcu_preempt09:35:311
13595993124,4cyclictest3-21ksoftirqd/012:10:480
1359599312,16cyclictest0-21swapper/008:20:250
13595993115,13cyclictest25795-21wc07:55:010
1359599311,4cyclictest81rcu_preempt12:15:200
1359599311,4cyclictest81rcu_preempt12:15:200
56702301,5sleep10-21swapper/111:18:111
40372301,5sleep10-21swapper/109:46:561
33952301,5sleep10-21swapper/112:37:511
139792301,5sleep00-21swapper/008:48:480
1359699308,19cyclictest0-21swapper/109:40:281
1359699305,5cyclictest81rcu_preempt08:50:131
1359699303,4cyclictest81rcu_preempt10:33:091
1359699303,4cyclictest81rcu_preempt07:59:031
1359599309,10cyclictest22921-21taskset10:37:400
1359599302,14cyclictest0-21swapper/010:12:250
1359599301,5cyclictest81rcu_preempt11:03:520
1359599301,4cyclictest81rcu_preempt11:25:280
13595993012,6cyclictest10542-21grep10:05:150
1359599301,17cyclictest7212-21fschecks_time08:30:160
13595993011,6cyclictest7202-21ntp_states09:55:230
13595993011,6cyclictest27930-21perl09:25:180
60342291,5sleep10-21swapper/111:20:121
5562291,5sleep00-21swapper/011:05:130
36582291,5sleep10-21swapper/111:11:461
33012291,5sleep00-21swapper/012:36:570
245382291,24sleep124591-21users10:40:281
22522291,5sleep00-21swapper/008:15:300
186722291,5sleep10-21swapper/111:51:221
1359699295,4cyclictest81rcu_preempt12:44:481
1359699295,4cyclictest81rcu_preempt12:16:341
1359699295,4cyclictest81rcu_preempt12:16:341
1359699294,22cyclictest0-21swapper/111:57:051
1359699291,4cyclictest81rcu_preempt10:49:061
1359699291,4cyclictest81rcu_preempt10:07:061
1359699291,4cyclictest81rcu_preempt09:01:371
1359699291,4cyclictest81rcu_preempt08:36:201
1359699291,4cyclictest81rcu_preempt08:21:541
1359699291,3cyclictest0-21swapper/110:15:161
1359699291,25cyclictest27330-21kworker/u4:007:35:111
1359699291,10cyclictest24166-21sed12:05:301
1359599298,4cyclictest0-21swapper/011:45:140
1359599296,5cyclictest1784-21timerwakeupswit09:40:270
1359599292,14cyclictest11565-21gdbus11:34:500
1359599291,4cyclictest81rcu_preempt08:43:350
1359599291,16cyclictest19689-21/usr/sbin/munin11:55:160
1359599291,16cyclictest0-21swapper/009:24:440
1359599291,14cyclictest4141-21fschecks_count12:40:160
7122281,5sleep10-21swapper/108:14:061
291732281,5sleep10-21swapper/108:01:301
284362281,5sleep10-21swapper/110:51:201
251482281,5sleep10-21swapper/109:17:351
218492281,5sleep10-21swapper/107:43:361
192672281,5sleep10-21swapper/110:28:451
18802281,5sleep10-21swapper/111:08:581
1359699285,4cyclictest81rcu_preempt12:23:021
1359699285,4cyclictest81rcu_preempt08:32:411
1359699284,4cyclictest81rcu_preempt12:50:341
1359699282,4cyclictest81rcu_preempt09:12:001
1359699281,6cyclictest81rcu_preempt12:30:531
13596992815,7cyclictest5096-21iostat_ios09:50:191
1359699281,4cyclictest81rcu_preempt09:31:051
1359699281,23cyclictest12381-21seq10:10:141
1359699281,12cyclictest29728-21wget08:05:111
13595992811,5cyclictest30725-21ls12:25:120
13595992811,5cyclictest30329-21runrttasks10:56:310
1359599281,15cyclictest18278-21iostat_ios10:25:180
1359599281,14cyclictest4390-21latency_hist09:50:010
1359599281,14cyclictest29727-21aten_r4power_en08:05:100
130952281,5sleep10-21swapper/111:37:081
118852281,5sleep10-21swapper/108:41:331
96992271,4sleep10-21swapper/110:02:041
94512271,5sleep10-21swapper/111:28:181
64602271,5sleep10-21swapper/108:28:551
290112271,4sleep129163-21cpuspeed_turbos10:55:121
224862271,5sleep10-21swapper/112:01:491
174852271,5sleep10-21swapper/108:56:131
1359699277,16cyclictest0-21swapper/107:45:291
1359699274,4cyclictest81rcu_preempt07:26:421
1359699271,12cyclictest16387-21sendmail_mailqu11:45:251
1359599278,6cyclictest29915-21iostat_ios09:30:180
1359599274,17cyclictest16102-21diskstats10:20:150
1359599272,12cyclictest18519-21fschecks_count07:35:150
1359599271,4cyclictest81rcu_preempt10:50:070
1359599271,4cyclictest81rcu_preempt07:40:540
1359599271,14cyclictest5316-21/usr/sbin/munin09:50:220
1359599271,14cyclictest5157-21/usr/sbin/munin08:25:150
1359599271,14cyclictest22268-21tail12:00:280
1359599271,14cyclictest11565-21gdbus12:53:310
1359599271,13cyclictest9674-21sort08:35:290
13595992711,14cyclictest0-21swapper/011:37:110
111912271,5sleep10-21swapper/111:31:541
77302261,4sleep10-21swapper/109:56:191
1359699262,4cyclictest81rcu_preempt10:24:371
13596992617,6cyclictest22-21ksoftirqd/112:27:051
1359599269,5cyclictest28652-21cut12:20:110
1359599268,6cyclictest23542-21interrupts12:05:190
1359599268,5cyclictest13961-21cstates07:25:140
1359599261,4cyclictest81rcu_preempt11:24:300
1359599261,4cyclictest40250irq/92-i91509:15:260
1359599261,13cyclictest9611-21runrttasks10:01:080
1359599261,13cyclictest18116-21wget09:00:120
1359599261,12cyclictest3639-21chrt11:11:330
1359699252,9cyclictest1256-21df_inode08:15:141
13596992518,5cyclictest14178-21uname11:40:201
1359599258,13cyclictest26654-21taskset10:47:180
1359599252,11cyclictest23386-21unixbench_singl07:45:280
13595992516,5cyclictest32228-21wc09:35:270
1359599251,16cyclictest0-21swapper/012:30:560
1359599251,16cyclictest0-21swapper/010:30:530
13595992414,5cyclictest32749-21grep08:10:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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