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2026-08-12 - 08:31
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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 12, 2026 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
276052318286,21sleep10-21swapper/119:05:381
276052318286,21sleep10-21swapper/119:05:371
279322279218,19sleep00-21swapper/019:09:510
279322279218,19sleep00-21swapper/019:09:510
277202266235,20sleep20-21swapper/219:07:082
277202266235,20sleep20-21swapper/219:07:082
277892263231,21sleep30-21swapper/319:08:013
277892263231,21sleep30-21swapper/319:08:013
106092900,0sleep30-21swapper/319:40:163
79162600,0sleep00-21swapper/000:18:580
308902590,0sleep30-21swapper/322:55:133
212892590,0sleep00-21swapper/023:47:500
314452570,0sleep30-21swapper/323:34:493
83362550,0sleep30-21swapper/322:21:203
50192550,0sleep10-21swapper/123:18:371
23912520,0sleep00-21swapper/022:18:100
32412190,0sleep10-21swapper/122:38:211
264052190,0sleep30-21swapper/322:52:083
323112170,0sleep20-21swapper/221:18:212
122492170,0sleep30-21swapper/300:01:363
297812150,0sleep30-21swapper/323:14:073
277432140,0sleep30-21swapper/321:15:183
135342140,0sleep20-21swapper/223:43:132
214762130,0sleep20-21swapper/220:05:222
86922120,0sleep10-21swapper/100:39:051
71572100,0sleep20-21swapper/222:20:282
2807399107,2cyclictest28-21ksoftirqd/219:15:022
2807399106,3cyclictest17591-21diskmemload21:12:172
2806799103,4cyclictest31712-21perf23:35:001
2806499108,1cyclictest12-21ksoftirqd/019:20:010
9281290,0chrt0-21swapper/000:39:330
29853290,0sleep20-21swapper/223:33:362
280649994,3cyclictest3687-21basename22:00:010
15855290,0sleep015856-21unixbench_singl19:50:170
9229280,0sleep10-21swapper/121:43:261
7404280,0sleep30-21swapper/323:20:103
28928280,0sleep10-21swapper/100:11:311
280809980,7cyclictest27554-21ssh21:54:483
280679982,1cyclictest14432-21idleruntime-cro23:05:001
6637270,0sleep00-21swapper/023:39:180
31626270,0sleep30-21swapper/300:13:373
280809973,3cyclictest5381-21cron22:40:013
280809973,3cyclictest5146-21cron19:30:003
280739975,1cyclictest28-21ksoftirqd/223:00:012
280739975,1cyclictest28-21ksoftirqd/222:40:012
280739975,1cyclictest24988-21diskstats23:50:132
280739974,2cyclictest20571-21sshd20:02:442
280739972,3cyclictest3499-21cut21:20:162
280739972,3cyclictest11980-21apt-get22:05:012
280679972,3cyclictest2051-21sh21:20:011
280679971,4cyclictest28913-21perf22:15:011
280649974,2cyclictest504-21dbus-daemon21:25:010
280649974,2cyclictest32477-21ntpq23:15:170
280649973,3cyclictest658-21snmpd21:08:320
280649973,3cyclictest658-21snmpd21:08:320
280649973,3cyclictest275-21systemd-journal23:05:570
280649973,1cyclictest15160-21idleruntime-cro23:25:000
280649972,3cyclictest21865-21turbostat22:50:000
280649971,3cyclictest6174-21munin-run20:45:010
24315270,0sleep30-21swapper/300:28:533
280809966,0cyclictest0-21swapper/322:40:243
280809964,2cyclictest12936-21/usr/sbin/munin21:45:183
280809964,1cyclictest8503-21df23:40:153
280809963,2cyclictest658-21snmpd22:46:293
280809963,2cyclictest5318-21sed22:00:203
280809963,2cyclictest504-21dbus-daemon20:00:323
280809963,2cyclictest504-21dbus-daemon00:15:063
280809963,2cyclictest3934-21ntpq21:20:193
280809963,2cyclictest3828-21cat22:00:013
280809963,2cyclictest32591-21df_inode23:35:133
280809963,2cyclictest31353-21sh23:15:083
280809963,2cyclictest25317-21ssh21:14:343
280809963,2cyclictest23471-21ssh22:30:233
280809963,2cyclictest15522-21ssh23:25:063
280809963,2cyclictest10185-11brltty19:51:423
280809962,3cyclictest8218-21expr19:35:143
280809962,3cyclictest658-21snmpd23:00:323
280809962,3cyclictest658-21snmpd22:25:093
280809962,3cyclictest658-21snmpd22:18:433
280809962,3cyclictest658-21snmpd22:05:343
280809962,3cyclictest658-21snmpd21:35:233
280809962,3cyclictest658-21snmpd21:25:013
280809962,3cyclictest658-21snmpd20:55:283
280809962,3cyclictest658-21snmpd20:35:183
280809962,3cyclictest658-21snmpd20:21:583
280809962,3cyclictest658-21snmpd20:19:043
280809962,3cyclictest658-21snmpd20:12:513
280809962,3cyclictest658-21snmpd00:30:423
280809962,3cyclictest658-21snmpd00:22:043
280809962,3cyclictest4872-21cat20:40:133
280809962,3cyclictest275-21systemd-journal21:05:013
280809962,3cyclictest275-21systemd-journal21:05:013
280809962,3cyclictest13402-21basename21:00:133
280809962,3cyclictest1-21systemd19:15:013
280809962,2cyclictest275-21systemd-journal21:42:253
280809962,1cyclictest0-21swapper/321:31:593
280809961,4cyclictest2121-21ssh00:35:133
280809960,6cyclictest0-21swapper/323:05:033
280809960,2cyclictest8502-21sed00:00:003
280809960,0cyclictest0-21swapper/323:47:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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