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2026-07-06 - 11:03
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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 rack5slot2.osadl.org (updated Mon Jul 06, 2026 00:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
208672236222,10sleep10-21swapper/119:05:101
228382187172,11sleep00-21swapper/019:06:450
208642187171,12sleep30-21swapper/319:05:083
228302183166,13sleep20-21swapper/219:06:402
302242510,0sleep10-21swapper/120:25:171
2325499100,9cyclictest696-21awk22:05:000
232549993,6cyclictest16456-21perf20:00:010
232549992,3cyclictest28840-21munin-run20:25:010
232549990,8cyclictest22332-21lockfile-remove23:20:010
232549981,1cyclictest520-21in:imuxsock20:44:590
232549981,1cyclictest1737-21fschecks_count00:30:130
232549980,1cyclictest28136-21perl21:30:150
232549980,1cyclictest25604-21cron19:15:000
232549980,1cyclictest22714-21memory20:10:170
232549980,1cyclictest22714-21memory20:10:160
232549980,1cyclictest2207-21munin-run23:10:010
232549980,1cyclictest20700-21munin-node23:35:110
232549972,1cyclictest802-21snmpd19:42:120
232549972,1cyclictest21338-21ssh23:50:580
232549972,1cyclictest205-21systemd-journal21:05:010
232549971,1cyclictest802-21snmpd20:06:510
232549971,1cyclictest30497-21ssh00:11:510
232549971,1cyclictest26243-21grep19:15:000
232549971,1cyclictest1406-21awk19:30:010
232549971,1cyclictest12586-21grep00:35:180
232549971,1cyclictest10555-21ssh23:45:270
232549971,1cyclictest0-21swapper/022:15:120
232549970,2cyclictest0-21swapper/019:45:020
232549970,1cyclictest8627-21ls22:25:010
232549970,1cyclictest7810-21ssh23:12:150
232549970,1cyclictest7810-21ntp_states20:45:170
232549970,1cyclictest6295-21ssh22:39:480
232549970,1cyclictest4686-21grep19:35:150
232549970,1cyclictest4298-21perl00:15:130
232549970,1cyclictest4226-21hddtemp_smartct21:50:160
232549970,1cyclictest3873-21awk19:35:010
232549970,1cyclictest32492-21cut23:25:010
232549970,1cyclictest32492-21cut23:25:000
232549970,1cyclictest31335-21diskstats23:40:140
232549970,1cyclictest30766-21ntp_states21:15:190
232549970,1cyclictest30383-21ntp_states19:20:170
232549970,1cyclictest29209-21hddtemp_smartct23:55:140
232549970,1cyclictest26818-21turbostat22:50:010
232549970,1cyclictest24375-21grep00:25:150
232549970,1cyclictest2069-21ntp_states23:25:180
232549970,1cyclictest20099-21hddtemp_smartct21:10:140
232549970,1cyclictest19977-21df22:30:120
232549970,1cyclictest18939-21awk20:05:010
232549970,1cyclictest17082-21irqstats00:05:160
232549970,1cyclictest16770-21ls22:45:010
232549970,1cyclictest11417-21perl23:30:140
232549970,1cyclictest10528-21python20:50:200
3914260,0sleep20-21swapper/221:18:222
232659960,6cyclictest0-21swapper/323:01:313
232609962,3cyclictest14996-21ssh00:36:242
232549961,1cyclictest29961-21nscd00:00:010
232549961,1cyclictest29226-21awk20:25:130
232549961,0cyclictest2336-21cat22:05:170
232549960,2cyclictest0-21swapper/021:05:120
232549960,1cyclictest9725-21df_inode22:25:150
232549960,1cyclictest8362-21memory21:20:180
232549960,1cyclictest5832-21df21:35:130
232549960,1cyclictest5083-21egrep22:55:120
232549960,1cyclictest27902-21df22:50:140
232549960,1cyclictest26419-21perl21:45:150
232549960,1cyclictest24627-21df_inode20:15:130
232549960,1cyclictest17817-21df21:25:140
232549960,1cyclictest16244-21sed23:00:150
232549960,1cyclictest16015-21df21:40:140
232549960,1cyclictest1580-21apt20:35:120
232549960,1cyclictest14179-21perl21:55:140
232549960,1cyclictest14119-21diskstats00:20:140
232549960,1cyclictest12124-21fw_packets22:10:150
232549960,1cyclictest12000-21df_inode20:55:120
232549960,1cyclictest11928-21tr19:50:120
232549960,1cyclictest0-21swapper/020:30:130
15195260,1sleep32326599cyclictest21:24:043
232659950,5cyclictest30222-21perl22:35:113
232659950,5cyclictest0-21swapper/323:31:573
232659950,5cyclictest0-21swapper/321:52:343
232659950,5cyclictest0-21swapper/319:51:033
232659950,4cyclictest0-21swapper/320:15:103
232659950,3cyclictest30548-21memory21:15:173
232659950,3cyclictest19271-21if_eth023:50:143
232609955,0cyclictest0-21swapper/223:54:112
232609955,0cyclictest0-21swapper/223:25:572
232609950,5cyclictest0-21swapper/200:22:242
232569950,5cyclictest0-21swapper/122:33:441
232569950,5cyclictest0-21swapper/119:35:211
232569950,5cyclictest0-21swapper/100:28:591
232659944,0cyclictest28636-21kworker/3:000:06:113
232659944,0cyclictest0-21swapper/322:50:123
232659944,0cyclictest0-21swapper/300:19:573
232659943,1cyclictest0-21swapper/322:30:503
232659942,1cyclictest802-21snmpd00:35:293
232659942,1cyclictest802-21snmpd00:11:323
232659941,2cyclictest29359-21if_eth423:55:153
232659940,4cyclictest8908-21ssh00:00:553
232659940,4cyclictest22284-21sh22:47:113
232659940,4cyclictest186292sleep321:57:193
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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