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2026-05-16 - 13:42
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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 50 highest latencies:
System rack1slot2.osadl.org (updated Sat May 16, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
314326059,0sleep00-21swapper/007:20:130
310923626,0sleep20-21swapper/207:19:472
310223627,0sleep30-21swapper/307:19:443
2883023026,0sleep10-21swapper/107:17:581
34649976,0cyclictest0-21swapper/012:23:070
34649974,0cyclictest1563-21iostat_ios08:28:080
34649973,0cyclictest32528-21munin-node07:43:040
35160,0ktimersoftd/30-21swapper/309:58:093
34669960,0cyclictest0-21swapper/211:42:012
34649964,0cyclictest8616-21perl09:18:050
34649964,0cyclictest8517-21perl08:33:020
34649964,0cyclictest8360-21gltestperf11:48:050
34649964,0cyclictest678-21rt-features09:48:130
34649964,0cyclictest6311-21if_err_eth111:28:050
34649964,0cyclictest6181-21perl12:43:040
34649964,0cyclictest4265-21iostat11:08:070
34649964,0cyclictest31056-21aten_r1power_cu10:28:010
34649964,0cyclictest2998-21port_sshpriv08:48:120
34649964,0cyclictest29015-21aten2.4-expect10:08:000
34649964,0cyclictest27697-21perl12:18:050
34649964,0cyclictest26613-21perl09:08:050
34649964,0cyclictest26436-21perl08:23:040
34649964,0cyclictest24814-21aten2.4-expect11:58:020
34649964,0cyclictest24376-21sh11:57:470
34649964,0cyclictest22817-21df11:38:030
34649964,0cyclictest21308-21sh11:35:210
34649964,0cyclictest20765-21diskstats11:18:040
34649964,0cyclictest19449-21perl09:03:030
34649964,0cyclictest19360-21iostat_ios10:58:070
34649964,0cyclictest19211-21perl08:18:050
34649964,0cyclictest18152-21aten2.4-expect07:33:010
34649964,0cyclictest17505-21irqstats10:38:070
34649964,0cyclictest1628-21perl10:48:050
34649964,0cyclictest16219-21vmstat10:53:160
34649964,0cyclictest14689-21perl12:48:040
34649964,0cyclictest12651-21perl09:58:050
34649964,0cyclictest12176-21df_inode12:28:030
34649963,0cyclictest9657-21diskstats09:38:030
34649963,0cyclictest4591-21df_inode08:53:020
34649963,0cyclictest26724-21python12:33:150
34649963,0cyclictest25724-21df_abs07:38:020
34649963,0cyclictest24301-21diskstats09:28:030
34649963,0cyclictest18490-21diskstats09:43:030
34649963,0cyclictest18420-21ssh11:13:180
34649963,0cyclictest17734-21cut10:18:100
34649963,0cyclictest1548-21perl12:03:050
34649963,0cyclictest14900-21munin-node08:38:050
34649963,0cyclictest14664-21ssh10:35:020
34649963,0cyclictest12999-21cut08:13:070
34649963,0cyclictest12450-21ssh10:14:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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