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2026-08-19 - 13:55
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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 100 highest latencies:
System rackaslot8.osadl.org (updated Wed Aug 19, 2026 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
239322295269,17sleep10-21swapper/119:07:151
239072288258,20sleep20-21swapper/219:06:562
239002267236,21sleep00-21swapper/019:06:500
238502267237,19sleep30-21swapper/319:06:133
268522670,0sleep20-21swapper/221:55:182
201812620,0sleep00-21swapper/020:10:000
247192610,1sleep024256-21cyclictest21:15:190
175762610,0sleep10-21swapper/100:05:181
307932570,0sleep10-21swapper/121:19:441
155092550,0sleep20-21swapper/200:04:192
163862540,0sleep00-21swapper/022:27:390
149622490,0sleep20-21swapper/222:26:332
181092190,0sleep20-21swapper/223:07:252
181092190,0sleep20-21swapper/223:07:252
215762170,0sleep20-21swapper/223:48:212
112302170,0sleep20-21swapper/200:20:212
300972130,0sleep10-21swapper/122:55:151
166272130,0sleep20-21swapper/221:30:142
131112130,0sleep20-21swapper/221:47:172
242739991,7cyclictest21659-21ssh00:26:423
242709994,3cyclictest275-21systemd-journal21:00:012
242669992,4cyclictest31215-21latency_hist20:35:001
23994290,0sleep10-21swapper/100:28:291
30672280,0sleep30-21swapper/321:19:383
30057280,0sleep00-21swapper/021:57:120
242739983,3cyclictest275-21systemd-journal00:16:483
242709981,4cyclictest31216-21idleruntime-cro20:35:002
242709980,7cyclictest12755-21rm23:23:582
242669984,1cyclictest27882-21idleruntime-cro22:35:011
242669982,5cyclictest275-21systemd-journal23:55:001
242669980,3cyclictest27700-21df19:15:141
242639987,1cyclictest12-21ksoftirqd/000:00:000
18429280,0sleep30-21swapper/323:45:583
242739976,1cyclictest12327-21ssh00:21:103
242739975,2cyclictest34-21ksoftirqd/320:40:003
242739974,2cyclictest30727-21snmpd23:13:023
242739974,2cyclictest275-21systemd-journal21:44:563
242739973,3cyclictest7943-21df23:40:123
242739973,3cyclictest275-21systemd-journal22:32:453
242739972,3cyclictest275-21systemd-journal19:25:403
242739970,1cyclictest14380-21diskmemload21:46:373
242709973,3cyclictest30727-21snmpd23:16:472
242709973,3cyclictest29842-21cron23:15:012
242709973,3cyclictest275-21systemd-journal20:41:432
242709973,3cyclictest24182-11brltty23:41:072
242709973,1cyclictest0-21swapper/222:05:442
242709972,4cyclictest15623-21ls20:00:002
242669973,3cyclictest31737-21apt21:20:151
242669972,3cyclictest26447-21grep19:15:011
242669970,1cyclictest2787-21ssh23:17:441
242639974,2cyclictest501-21in:imuxsock19:35:210
242639974,2cyclictest275-21systemd-journal23:05:010
242639973,3cyclictest30727-21snmpd22:16:250
242639973,3cyclictest30727-21snmpd20:18:040
242639973,3cyclictest1286-21awk20:40:130
242639973,1cyclictest0-21swapper/022:06:540
242639973,1cyclictest0-21swapper/022:02:290
22765270,0sleep20-21swapper/222:50:232
1754270,0sleep30-21swapper/323:35:573
6883260,0sleep10-21swapper/122:02:501
27626260,0sleep20-21swapper/221:36:272
242739966,0cyclictest0-21swapper/322:38:493
242739966,0cyclictest0-21swapper/322:16:343
242739966,0cyclictest0-21swapper/300:06:083
242739963,2cyclictest6500-21head23:00:203
242739963,2cyclictest6088-21ssh22:02:143
242739963,2cyclictest504-21dbus-daemon21:39:043
242739963,2cyclictest30727-21snmpd21:20:113
242739963,2cyclictest30375-21tune2fs19:20:153
242739963,2cyclictest28274-21ssh00:30:223
242739963,2cyclictest21955-21ssh22:11:353
242739963,2cyclictest20887-21ssh21:13:353
242739963,2cyclictest15020-21cat23:05:193
242739963,2cyclictest15020-21cat23:05:193
242739963,1cyclictest0-21swapper/323:50:433
242739962,3cyclictest6939-21cat23:20:133
242739962,3cyclictest6847-21fschecks_count19:40:173
242739962,3cyclictest30727-21snmpd23:31:213
242739962,3cyclictest30727-21snmpd23:15:473
242739962,3cyclictest30727-21snmpd22:26:193
242739962,3cyclictest30727-21snmpd22:20:073
242739962,3cyclictest30727-21snmpd21:51:133
242739962,3cyclictest30727-21snmpd21:05:203
242739962,3cyclictest30727-21snmpd21:00:443
242739962,3cyclictest30727-21snmpd20:50:583
242739962,3cyclictest25990-21cat00:10:173
242739962,3cyclictest25364-21cut20:20:143
242739962,3cyclictest14887-21apt-get23:25:113
242739962,3cyclictest11675-21cat22:05:203
242739962,3cyclictest1123-21cat23:55:163
242739961,4cyclictest0-21swapper/321:27:453
242739960,6cyclictest0-21swapper/322:53:083
242739960,6cyclictest0-21swapper/300:02:463
242739960,5cyclictest27440-21sed21:55:223
242739960,5cyclictest22529-21/usr/sbin/munin20:15:153
242739960,4cyclictest17808-21sh22:47:573
242739960,4cyclictest0-21swapper/321:30:093
242739960,2cyclictest4460-21expr22:40:133
242739960,0cyclictest0-21swapper/300:35:443
242709966,0cyclictest0-21swapper/222:57:232
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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