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2025-12-07 - 09:07
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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 Sun Dec 07, 2025 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
290012295226,22sleep00-21swapper/019:07:460
288712282247,22sleep10-21swapper/119:06:261
290652272238,22sleep30-21swapper/319:08:383
288672259224,22sleep20-21swapper/219:06:242
170992630,0sleep10-21swapper/123:06:401
293872620,1sleep30-21swapper/322:04:393
154042620,0sleep00-21swapper/023:05:190
127222620,0sleep30-21swapper/321:51:263
5472590,0sleep00-21swapper/019:15:140
27112570,0sleep20-21swapper/222:32:252
21542560,0sleep00-21swapper/021:20:150
85502550,0sleep00-21swapper/023:00:180
255592210,0sleep00-21swapper/023:13:400
270562200,0sleep20-21swapper/200:01:512
2928399153,6cyclictest0-21swapper/123:55:021
243632140,0sleep30-21swapper/323:35:583
6382130,0sleep30-21swapper/322:55:133
2928399132,7cyclictest9043-21ssh23:00:241
2928399131,9cyclictest0-21swapper/122:02:271
215292130,0sleep20-21swapper/223:34:522
2928399122,6cyclictest0-21swapper/121:54:301
2928399120,3cyclictest17192-21sort19:50:221
2928399120,2cyclictest5145-21ssh21:22:171
2928399120,2cyclictest22034-21ssh21:59:071
160802120,0sleep00-21swapper/023:54:410
2928399112,5cyclictest1763-21sh00:07:061
2928399110,3cyclictest32182-21sh21:41:561
2928399110,3cyclictest19951-21sh22:20:391
2928399110,3cyclictest1006-21chrt20:25:381
2928399110,2cyclictest5845-21ssh22:59:011
2928399110,2cyclictest3304-21ssh23:20:191
2928399110,2cyclictest30189-21ssh22:29:051
2928399110,2cyclictest0-21swapper/122:05:151
2928399110,1cyclictest29284-21ssh22:52:001
2928399110,1cyclictest16734-21ssh00:18:231
2928399110,1cyclictest15522-21cut21:00:151
2928399110,1cyclictest14827-21ssh22:41:101
2928399103,6cyclictest30654-21snmpd00:11:171
2928399103,6cyclictest29215-21sh21:16:101
2928399101,2cyclictest508-21dbus-daemon23:32:111
2928399101,2cyclictest19982-21systemd-journal23:51:231
2928399101,2cyclictest19982-21systemd-journal19:16:521
2928399101,1cyclictest19740-21apt-get21:10:141
2928399101,1cyclictest0-21swapper/122:35:271
2928399100,9cyclictest19760-21ntpq00:20:171
2928399100,3cyclictest19982-21systemd-journal19:32:251
2928399100,2cyclictest31612-21munin-node22:30:121
2928399100,2cyclictest30901-21ssh23:40:371
2928399100,2cyclictest29261-21ssh00:29:041
2928399100,2cyclictest27792-21ssh23:39:231
2928399100,2cyclictest19982-21systemd-journal20:54:541
2928399100,1cyclictest22854-21apt-get20:05:021
2928399100,1cyclictest19274-21munin-run21:10:001
2928399100,1cyclictest0-21swapper/100:30:111
2928399100,1cyclictest0-21swapper/100:04:201
195762100,0sleep00-21swapper/021:10:060
292919995,3cyclictest19982-21systemd-journal00:03:533
292919994,3cyclictest19982-21systemd-journal00:26:253
292879995,2cyclictest19982-21systemd-journal00:32:172
292879994,3cyclictest19982-21systemd-journal21:52:292
292839992,6cyclictest23818-21grep21:35:201
292839992,4cyclictest29009-21chrt20:16:331
292839991,2cyclictest8633-21sh21:25:121
292839991,1cyclictest3223-21apt-get23:45:121
292839991,0cyclictest4415-21apt-get19:25:131
292839990,3cyclictest9089-21cstates19:35:141
292839990,3cyclictest7868-21sshd20:42:301
292839990,3cyclictest5741-21ssh00:35:211
292839990,3cyclictest30464-21ntp_states19:10:181
292839990,3cyclictest2957-21cat19:20:161
292839990,3cyclictest25373-21ls20:10:171
292839990,3cyclictest19117-21sed19:55:181
292839990,3cyclictest1793-21grep20:30:151
292839990,2cyclictest6227-21taskset21:46:371
292839990,2cyclictest31087-21sed20:20:201
292839990,2cyclictest22357-21http20:05:011
292839990,2cyclictest19982-21systemd-journal20:57:391
292839990,2cyclictest13100-21cron19:45:021
292839990,2cyclictest11004-21turbostat.cron22:15:001
292839990,1cyclictest4548-21if_err_enp4s020:35:161
292839990,1cyclictest30441-21ssh23:16:401
292839990,1cyclictest29741-11brltty22:48:241
292839990,1cyclictest17163-21users21:30:231
292839990,1cyclictest13365-21apt-get19:45:141
292839990,1cyclictest13365-21apt-get19:45:141
292839990,1cyclictest0-21swapper/123:26:461
292839990,1cyclictest0-21swapper/120:48:221
292809990,7cyclictest19982-21systemd-journal19:10:110
292919985,2cyclictest34-21ksoftirqd/321:40:013
292919981,2cyclictest19982-21systemd-journal23:48:113
292879986,1cyclictest28-21ksoftirqd/200:00:012
292879983,3cyclictest19982-21systemd-journal20:41:322
292879983,3cyclictest19982-21systemd-journal19:35:132
292879980,7cyclictest1-21systemd20:35:422
292839980,3cyclictest12221-21sort22:15:171
292839980,2cyclictest20751-21ssh23:10:131
292809984,3cyclictest19982-21systemd-journal21:35:480
292809984,3cyclictest11972-21grep22:15:150
292809984,2cyclictest19982-21systemd-journal00:07:450
292809983,3cyclictest7661-21lldpd21:32:380
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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