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2026-08-04 - 23:46

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 Tue Aug 04, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
260959912021175,22cyclictest27997-21basename07:30:001
257182555509,31sleep00-21swapper/007:21:380
256982513418,31sleep10-21swapper/107:21:241
2609499144121,5cyclictest27985-21munin-run07:30:000
2609499674,18cyclictest11482-21ntp_states12:25:260
2609499543,7cyclictest6026-21diskstats09:20:150
26094995010,5cyclictest0-21swapper/008:45:120
203662390,8sleep02609499cyclictest12:50:130
2609599373,11cyclictest81rcu_preempt09:34:531
26095993626,6cyclictest5659-21diskstats10:45:141
26095993626,6cyclictest17092-21/usr/sbin/munin12:40:241
26094993611,12cyclictest5234-21cstates12:10:120
77672351,29sleep17870-21wc08:00:011
2609599358,10cyclictest2225-21dbus-daemon10:40:261
2609499351,21cyclictest23850-21chrt11:33:280
279402341,29sleep128037-21aten_r4power_vo11:45:101
26095993414,7cyclictest3286-21runrttasks10:59:041
2609499348,12cyclictest19752-21proc_pri09:55:270
26094993410,12cyclictest2225-21dbus-daemon09:40:240
2609599339,11cyclictest2695-21snmpd11:34:331
2609499338,12cyclictest23061-21aten_r4power_en08:40:110
2609499331,20cyclictest13328-21sshd08:14:010
295662321,27sleep129604-21ntp_states07:30:241
2609599321,17cyclictest20637-21cut11:25:141
2609499321,14cyclictest3286-21runrttasks12:31:220
202522321,27sleep120330-21timerandwakeup08:30:291
18272321,4sleep11132-21/usr/sbin/munin12:00:231
12992321,27sleep12695-21snmpd09:06:111
26095993120,7cyclictest16658-21grep08:20:291
2609499312,14cyclictest3286-21runrttasks07:32:050
2609499311,18cyclictest2225-21dbus-daemon08:57:020
2609499311,18cyclictest14053-21fschecks_time08:15:170
181782311,4sleep10-21swapper/111:18:101
142612317,7sleep122-21ksoftirqd/112:35:021
2609599306,13cyclictest40250irq/92-i91508:10:151
2609599304,4cyclictest81rcu_preempt11:44:501
2609599304,4cyclictest81rcu_preempt09:50:361
2609599302,12cyclictest3286-21runrttasks09:43:561
26095993016,7cyclictest8555-21iostat_ios08:00:211
2609599301,5cyclictest81rcu_preempt07:44:361
2609599301,4cyclictest81rcu_preempt12:29:201
26095993011,5cyclictest155292netstat11:10:211
2609499307,6cyclictest28118-21cron10:20:000
26094993022,5cyclictest8201-21/usr/sbin/munin09:25:210
2609499302,16cyclictest0-21swapper/012:42:280
26094993021,5cyclictest1902-21aten_r4power_en09:10:130
2609499302,14cyclictest17836-21ntp_states09:50:260
26094993018,7cyclictest32524-21wget09:05:140
243402301,5sleep00-21swapper/010:09:530
141272301,5sleep10-21swapper/112:33:541
85562291,5sleep10-21swapper/112:19:411
317532291,24sleep10-21swapper/111:55:141
304582291,24sleep130465-21df_inode10:25:131
283892291,5sleep00-21swapper/008:54:040
2609599294,4cyclictest81rcu_preempt09:59:011
26095992920,5cyclictest20829-21grep12:50:221
2609499292,14cyclictest11564-21packagekitd11:50:300
2609499291,4cyclictest81rcu_preempt11:41:470
2609499291,4cyclictest81rcu_preempt08:34:240
2609499291,15cyclictest6308-21/usr/sbin/munin10:45:260
26094992911,5cyclictest28343-21/usr/sbin/munin10:20:100
26094992910,6cyclictest31270-21if_eth007:35:190
245132291,5sleep10-21swapper/108:42:531
187112291,5sleep10-21swapper/108:26:161
171522291,4sleep00-21swapper/008:24:340
142642291,5sleep10-21swapper/111:06:301
128392291,5sleep10-21swapper/109:37:391
74102281,3sleep10-21swapper/109:24:431
2609599285,4cyclictest81rcu_preempt10:05:021
2609599284,4cyclictest81rcu_preempt12:12:481
2609599284,4cyclictest81rcu_preempt10:11:281
2609599284,16cyclictest0-21swapper/112:21:091
2609599283,5cyclictest0-21swapper/108:54:201
2609599283,4cyclictest81rcu_preempt11:50:301
2609599282,4cyclictest81rcu_preempt07:37:471
2609599282,13cyclictest0-21swapper/108:47:001
2609599281,4cyclictest81rcu_preempt08:16:141
26095992810,6cyclictest2019-21seq07:45:101
26095992810,5cyclictest7808-21if_eth010:50:181
2609499283,18cyclictest18502-21diskstats12:45:160
2609499282,21cyclictest15253-21/usr/sbin/munin12:35:260
2609499282,13cyclictest30869-21memory10:25:230
26094992819,5cyclictest5881-21apt-get07:55:180
2609499281,4cyclictest81rcu_preempt11:35:130
2609499281,15cyclictest4333-21/usr/sbin/munin09:15:180
2609499281,14cyclictest3393-21users07:45:320
2609499281,14cyclictest19178-21cut11:20:240
2609499281,14cyclictest12234-21/usr/sbin/munin11:00:300
2609499281,14cyclictest10073-21/usr/sbin/munin10:55:290
2609499281,13cyclictest3194-21wget12:05:110
225992281,5sleep00-21swapper/008:37:410
147662281,23sleep00-21swapper/011:10:090
97622275,6sleep03-21ksoftirqd/009:30:130
53672271,5sleep10-21swapper/109:18:111
53422271,5sleep10-21swapper/107:51:101
53422271,5sleep10-21swapper/107:51:091
305362271,5sleep10-21swapper/109:00:111
2609599276,4cyclictest81rcu_preempt09:11:521
2609599275,4cyclictest81rcu_preempt11:37:131
2609599274,4cyclictest81rcu_preempt11:22:091
2609599274,17cyclictest21070-21diskstats10:00:171
2609599271,22cyclictest1776-21df_inode10:35:151
2609599271,10cyclictest3812-21memory12:05:221
2609499279,6cyclictest18404-21sort08:25:300
2609499279,5cyclictest11565-21gdbus10:51:540
2609499278,4cyclictest81rcu_preempt11:55:180
2609499273,12cyclictest0-21swapper/011:25:250
2609499272,14cyclictest0-21swapper/011:15:440
2609499272,13cyclictest8238-21df08:00:140
2609499271,4cyclictest81rcu_preempt12:24:030
2609499271,13cyclictest2295-21tr10:35:240
26094992710,5cyclictest21659-21proc_pri10:00:280
198572271,5sleep10-21swapper/112:49:251
126772271,5sleep10-21swapper/111:04:291
112572271,5sleep10-21swapper/108:07:031
2609599263,3cyclictest81rcu_preempt08:55:201
2609599262,9cyclictest32344-21df_inode10:30:131
2609599262,9cyclictest27668-21users10:15:321
26095992618,5cyclictest22-21ksoftirqd/109:25:281
2609499268,7cyclictest1554-21taskset07:41:570
26094992617,6cyclictest3-21ksoftirqd/012:18:180
26094992617,6cyclictest13639-21needreboot11:05:240
2609499261,4cyclictest81rcu_preempt10:44:440
2609499261,16cyclictest0-21swapper/010:30:240
26094992611,12cyclictest12318-21sendmail_mailst09:35:270
224092261,5sleep10-21swapper/108:35:431
166722261,5sleep10-21swapper/109:48:181
2609499258,5cyclictest81rcu_preempt11:45:110
2609499252,17cyclictest16141-21python09:45:280
2609499251,16cyclictest0-21swapper/010:10:400
2609499251,15cyclictest0-21swapper/012:02:090
2609499246,6cyclictest4142-21cpu07:50:120
2609499246,6cyclictest4142-21cpu07:50:120
2609499241,18cyclictest10319-21/usr/sbin/munin08:05:150
2609599231,10cyclictest28343-21/usr/sbin/munin10:20:111
26094992312,7cyclictest30649-21cut09:00:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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