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2026-05-25 - 10:18
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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 Mon May 25, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
170672315289,17sleep20-21swapper/219:09:422
168172282252,19sleep10-21swapper/119:06:441
169242278247,21sleep00-21swapper/019:07:520
168132270235,21sleep30-21swapper/319:06:413
144502630,0sleep20-21swapper/222:10:472
46862560,0sleep00-21swapper/000:20:200
247822560,1sleep30-21swapper/322:36:273
128602560,0sleep20-21swapper/221:31:232
311072540,0sleep00-21swapper/021:23:210
273492460,0sleep30-21swapper/322:19:133
149342460,1sleep2503-21rs:main2
101932190,0sleep10-21swapper/123:25:471
26602180,0sleep00-21swapper/022:43:050
194552170,0sleep30-21swapper/322:52:583
90312160,0sleep20-21swapper/222:46:362
307932160,0sleep30-21swapper/322:40:163
168582160,0sleep10-21swapper/123:49:491
174352140,0sleep00-21swapper/021:53:560
279692130,0sleep10-21swapper/122:58:031
62472120,0sleep20-21swapper/223:04:492
171859986,1cyclictest22-21ksoftirqd/100:00:001
171849985,2cyclictest12-21ksoftirqd/000:00:010
26026270,0chrt0-21swapper/222:18:122
24133270,0sleep10-21swapper/123:35:001
171949974,2cyclictest504-21dbus-daemon21:05:013
171949973,3cyclictest658-21snmpd19:54:173
171949973,3cyclictest275-21systemd-journal23:44:213
171949970,1cyclictest13527-21ssh23:28:163
171949970,1cyclictest0-21swapper/321:40:013
171899973,3cyclictest504-21dbus-daemon23:40:192
171899973,3cyclictest27672-21awk00:35:012
171899973,3cyclictest275-21systemd-journal23:58:562
171899973,3cyclictest275-21systemd-journal19:46:152
171859973,3cyclictest29772-21apt-get19:35:121
171859973,3cyclictest275-21systemd-journal23:50:101
171859973,3cyclictest275-21systemd-journal23:20:011
171859970,7cyclictest8890-21ssh22:46:291
171859970,3cyclictest27257-21perf22:00:001
171849973,3cyclictest658-21snmpd20:14:390
171849973,3cyclictest658-21snmpd19:16:190
171849973,3cyclictest275-21systemd-journal23:01:160
171849973,1cyclictest0-21swapper/000:01:200
11837270,1sleep10-21swapper/121:50:161
682260,0sleep00-21swapper/021:43:590
171949966,0cyclictest0-21swapper/322:48:143
171949966,0cyclictest0-21swapper/321:52:113
171949963,3cyclictest483-21avahi-daemon21:10:013
171949963,2cyclictest6947-21ssh21:28:143
171949963,2cyclictest663-21runrttasks23:30:203
171949963,2cyclictest658-21snmpd22:13:403
171949963,2cyclictest658-21snmpd20:36:453
171949963,2cyclictest658-21snmpd20:06:193
171949963,2cyclictest658-21snmpd19:26:363
171949963,2cyclictest30642-21ssh00:16:383
171949963,2cyclictest27019-21tr20:40:123
171949963,2cyclictest19809-21ssh00:30:113
171949963,2cyclictest17418-21ssh23:50:053
171949963,2cyclictest15973-21turbostat.cron21:15:013
171949963,2cyclictest13799-21ssh21:32:063
171949963,2cyclictest12603-21ssh22:29:553
171949963,2cyclictest12427-21ssh00:05:403
171949962,3cyclictest9470-21cat20:00:153
171949962,3cyclictest658-21snmpd23:24:593
171949962,3cyclictest658-21snmpd22:06:573
171949962,3cyclictest658-21snmpd21:35:283
171949962,3cyclictest658-21snmpd20:55:563
171949962,3cyclictest658-21snmpd20:55:563
171949962,3cyclictest658-21snmpd20:50:093
171949962,3cyclictest658-21snmpd20:46:453
171949962,3cyclictest658-21snmpd20:30:543
171949962,3cyclictest658-21snmpd20:27:013
171949962,3cyclictest658-21snmpd20:12:283
171949962,3cyclictest658-21snmpd19:42:353
171949962,3cyclictest658-21snmpd19:31:353
171949962,3cyclictest658-21snmpd19:12:503
171949962,3cyclictest658-21snmpd00:26:313
171949962,3cyclictest28595-21diskstats00:35:143
171949962,3cyclictest25996-21cpuspeed23:55:123
171949962,3cyclictest19640-21expr21:55:143
171949962,3cyclictest17682-21find20:20:113
171949962,3cyclictest16110-21cat20:15:163
171949962,2cyclictest25373-21kworker/u8:123:05:103
171949962,1cyclictest0-21swapper/323:00:503
171949962,1cyclictest0-21swapper/322:03:053
171949961,3cyclictest11093-21rm23:45:243
171949961,2cyclictest25180-21rm21:20:023
171949960,6cyclictest0-21swapper/323:15:533
171949960,6cyclictest0-21swapper/321:19:053
171949960,3cyclictest4212-21head21:45:203
171949960,3cyclictest24293-21grep22:55:193
171949960,0cyclictest0-21swapper/322:20:263
171949960,0cyclictest0-21swapper/300:10:443
171899966,0cyclictest0-21swapper/222:31:272
171899964,1cyclictest7003-21ssh22:25:402
171899963,2cyclictest658-21snmpd21:07:522
171899963,2cyclictest658-21snmpd20:23:572
171899963,2cyclictest32155-21sh21:43:152
171899963,2cyclictest27678-21grep00:15:142
171899963,2cyclictest275-21systemd-journal23:23:502
171899963,2cyclictest25740-21cut20:35:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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