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2026-04-11 - 05:12
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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 Sat Apr 11, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
236552302275,17sleep20-21swapper/219:05:422
240022280250,20sleep10-21swapper/119:09:551
238332268236,21sleep30-21swapper/319:07:443
238182262231,21sleep00-21swapper/019:07:330
73482620,0sleep00-21swapper/023:21:470
226962620,0sleep20-21swapper/223:30:502
196132610,0sleep20-21swapper/221:12:592
293572600,0sleep30-21swapper/319:20:013
46032570,0sleep20-21swapper/222:21:392
209162550,0sleep10-21swapper/121:52:271
213022540,0sleep30-21swapper/322:31:333
134512540,0sleep10-21swapper/100:05:131
196942180,0sleep20-21swapper/220:10:132
170432160,0sleep30-21swapper/322:10:113
177652130,0sleep20-21swapper/222:49:382
184262110,0sleep10-21swapper/121:31:041
134002100,0sleep00-21swapper/021:48:010
241249998,1cyclictest28-21ksoftirqd/223:10:012
19672290,0sleep10-21swapper/123:29:531
30663280,0sleep30-21swapper/322:18:083
241289983,3cyclictest275-21systemd-journal21:10:013
241249984,3cyclictest275-21systemd-journal20:45:002
241249980,7cyclictest0-21swapper/223:45:122
241159985,2cyclictest658-21snmpd22:21:500
1048280,0sleep30-21swapper/323:57:143
241289973,3cyclictest504-21dbus-daemon23:20:013
241289973,3cyclictest4615-21awk23:00:203
241289973,3cyclictest275-21systemd-journal22:40:543
241289973,3cyclictest275-21systemd-journal22:24:413
241289973,3cyclictest275-21systemd-journal00:18:243
241289972,3cyclictest275-21systemd-journal20:56:483
241289972,3cyclictest275-21systemd-journal00:08:313
241249975,1cyclictest213282sleep223:10:242
241249974,2cyclictest658-21snmpd22:06:012
241249973,3cyclictest658-21snmpd19:26:452
241249973,3cyclictest504-21dbus-daemon20:35:002
241249970,7cyclictest498-21ssh22:39:092
241199975,1cyclictest4593-21memory23:20:151
241199973,3cyclictest658-21snmpd00:38:471
241199973,3cyclictest275-21systemd-journal21:15:201
241199973,3cyclictest21422-21diskstats23:50:121
241199971,1cyclictest116352ssh23:44:321
241199970,1cyclictest11113-21ssh21:26:491
241159975,2cyclictest28569-21apt-get23:35:110
241159973,3cyclictest658-21snmpd23:28:490
241159973,3cyclictest275-21systemd-journal21:59:120
241159973,3cyclictest24228-21cat00:30:170
241159973,2cyclictest275-21systemd-journal22:34:140
241159972,4cyclictest4788-21expr23:40:110
241159971,4cyclictest17078-21awk20:05:010
721260,0sleep30-21swapper/321:40:153
30640260,0sleep00-21swapper/019:20:180
29309260,1sleep30-21swapper/300:34:053
241289966,0cyclictest0-21swapper/323:45:333
241289964,1cyclictest23155-21cpuspeed_turbos21:15:123
241289964,1cyclictest0-21swapper/300:10:143
241289963,2cyclictest968-21ssh00:35:523
241289963,2cyclictest9402-21rm00:21:303
241289963,2cyclictest658-21snmpd23:28:163
241289963,2cyclictest658-21snmpd20:31:193
241289963,2cyclictest2753-21/usr/sbin/munin20:45:153
241289963,2cyclictest21410-21ssh23:10:273
241289963,2cyclictest14221-21ssh22:08:123
241289963,2cyclictest13636-21cron21:10:003
241289963,2cyclictest12178-21ssh23:05:153
241289962,3cyclictest658-21snmpd23:37:403
241289962,3cyclictest658-21snmpd22:36:323
241289962,3cyclictest658-21snmpd22:00:073
241289962,3cyclictest658-21snmpd21:30:063
241289962,3cyclictest658-21snmpd21:24:563
241289962,3cyclictest658-21snmpd20:52:293
241289962,3cyclictest658-21snmpd20:40:583
241289962,3cyclictest658-21snmpd20:18:313
241289962,3cyclictest658-21snmpd20:09:433
241289962,3cyclictest658-21snmpd19:38:513
241289962,3cyclictest658-21snmpd19:32:363
241289962,3cyclictest30613-21sensors_temp19:20:173
241289962,3cyclictest24354-21cat21:35:123
241289962,3cyclictest16792-21expr21:50:133
241289962,3cyclictest10129-21cat21:00:143
241289962,1cyclictest0-21swapper/323:40:113
241289962,1cyclictest0-21swapper/323:30:063
241289961,3cyclictest275-21systemd-journal21:55:273
241289961,3cyclictest275-21systemd-journal00:00:013
241289960,5cyclictest7465-21/usr/sbin/munin21:25:153
241289960,5cyclictest14837-21wc20:00:013
241289960,3cyclictest275-21systemd-journal23:50:113
241289960,2cyclictest19682-21expr20:10:133
241289960,0cyclictest0-21swapper/322:28:343
241249966,0cyclictest0-21swapper/221:45:592
241249966,0cyclictest0-21swapper/219:40:232
241249963,2cyclictest9872-21sh23:04:212
241249963,2cyclictest7776-21expr21:25:122
241249963,2cyclictest658-21snmpd20:45:072
241249963,2cyclictest658-21snmpd19:46:182
241249963,2cyclictest3714-21ssh23:39:492
241249963,2cyclictest31883-21smart_sda20:35:182
241249963,2cyclictest29256-21find23:55:112
241249963,2cyclictest275-21systemd-journal21:07:252
241249963,2cyclictest275-21systemd-journal20:59:502
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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