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2026-08-01 - 21:12
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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 Aug 01, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
273952331300,21sleep10-21swapper/107:08:201
273692273238,22sleep30-21swapper/307:08:023
272442270244,16sleep20-21swapper/207:06:242
274192268238,20sleep00-21swapper/007:08:390
319162730,0sleep30-21swapper/310:33:313
4592620,0sleep10-21swapper/111:50:131
290122610,0sleep20-21swapper/212:25:212
119002570,0sleep00-21swapper/010:21:190
115092560,0sleep20-21swapper/211:18:302
62452520,0sleep10-21swapper/108:45:011
327622520,0sleep10-21swapper/110:52:541
261432510,0sleep20-21swapper/210:30:132
176502230,0sleep20-21swapper/211:40:322
2765799181,3cyclictest483-21avahi-daemon11:20:011
251082180,0sleep10-21swapper/112:23:351
163772180,0sleep00-21swapper/009:45:390
307892160,0sleep00-21swapper/010:32:390
39122140,0sleep30-21swapper/309:39:083
171572140,0sleep00-21swapper/012:37:490
242282130,0sleep30-21swapper/311:45:143
2765799122,2cyclictest26342-21sh12:05:131
2765799121,1cyclictest27870-21apt-get07:10:121
2765799120,2cyclictest1684-21munin-run08:35:011
224042120,0sleep10-21swapper/110:27:481
2765799112,2cyclictest16608-21ssh12:37:231
2765799111,2cyclictest15669-21ssh11:40:111
2765799110,3cyclictest275-21systemd-journal10:55:521
2765799110,2cyclictest7158-21timerwakeupswit09:40:191
2765799110,2cyclictest275-21systemd-journal11:15:011
161122110,0sleep10-21swapper/109:27:051
2766199109,1cyclictest28-21ksoftirqd/211:15:012
2765799102,2cyclictest9292-21cat08:50:141
2765799102,2cyclictest658-21snmpd11:45:041
2765799102,2cyclictest658-21snmpd11:05:361
2765799102,1cyclictest3014-21ssh12:10:181
2765799102,1cyclictest0-21swapper/112:34:331
2765799100,3cyclictest3285-21grep10:35:211
2765799100,3cyclictest303-21users11:30:201
2765799100,3cyclictest275-21systemd-journal09:48:071
2765799100,3cyclictest275-21systemd-journal07:35:061
2765799100,3cyclictest275-21systemd-journal07:17:011
2765799100,3cyclictest27441-21basename08:20:011
2765799100,3cyclictest26322-21ssh10:10:341
2765799100,3cyclictest23994-21awk09:50:181
2765799100,3cyclictest16912-21perf12:00:001
2765799100,3cyclictest16614-21grep07:55:111
2765799100,3cyclictest12201-21/usr/sbin/munin11:00:121
2765799100,3cyclictest10566-21ssh10:40:131
2765799100,2cyclictest491-21systemd-logind08:20:491
2765799100,2cyclictest275-21systemd-journal10:05:011
2765799100,2cyclictest275-21systemd-journal08:50:011
276579993,1cyclictest658-21snmpd07:54:261
276579992,3cyclictest658-21snmpd08:04:271
276579992,2cyclictest5358-21expr07:30:151
276579992,1cyclictest32152-21latency09:55:181
276579992,1cyclictest14318-21tr09:00:181
276579992,1cyclictest12724-21rm10:21:551
276579991,2cyclictest3892-21cat09:20:141
276579991,2cyclictest29652-21expr09:35:131
276579991,2cyclictest18375-21cstates09:10:131
276579991,2cyclictest1090-21gltestperf07:20:141
276579990,3cyclictest9686-21tr07:40:171
276579990,3cyclictest8272-21memory10:00:181
276579990,3cyclictest7123-21ssh11:35:111
276579990,3cyclictest371-21apt-get10:15:121
276579990,3cyclictest30061-21ssh09:16:251
276579990,3cyclictest28188-21grep12:25:151
276579990,3cyclictest24093-21ssh09:31:351
276579990,3cyclictest23202-21ssh11:25:131
276579990,3cyclictest20382-21rm12:01:141
276579990,3cyclictest15120-21/usr/sbin/munin11:20:171
276579990,3cyclictest12995-21ls07:45:191
276579990,3cyclictest12381-21ssh12:15:271
276579990,2cyclictest275-21systemd-journal10:45:461
276579990,2cyclictest275-21systemd-journal10:30:461
276579990,2cyclictest275-21systemd-journal09:06:461
276579990,2cyclictest275-21systemd-journal08:59:551
276649985,2cyclictest31864-21cron08:30:003
276649983,3cyclictest674-21lldpd11:59:533
276619982,3cyclictest6637-21munin-run11:35:012
276579980,3cyclictest23607-21df_inode08:10:151
276579980,3cyclictest2289-21cstates08:35:131
276579980,3cyclictest22567-21users08:05:211
276579980,2cyclictest3180-21fschecks_count07:25:141
276579980,1cyclictest275-21systemd-journal08:25:271
276529985,2cyclictest12-21ksoftirqd/010:30:000
276529983,4cyclictest504-11dbus-daemon09:32:100
276529983,3cyclictest2657-21turbostat09:20:010
23291280,0sleep00-21swapper/010:47:130
21608280,0sleep00-21swapper/011:24:400
20224280,0sleep20-21swapper/211:23:392
276649974,2cyclictest504-21dbus-daemon10:12:173
276649973,3cyclictest658-21snmpd11:02:093
276649972,1cyclictest13057-1kworker/u9:111:40:163
276619974,2cyclictest28-21ksoftirqd/207:15:012
276619974,2cyclictest275-21systemd-journal09:18:262
276619973,3cyclictest275-21systemd-journal07:30:012
276619973,3cyclictest14248-21sshd07:50:092
276619973,3cyclictest1-21systemd08:45:012
276619970,1cyclictest16219-21ssh11:59:302
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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