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2026-04-22 - 00:51
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 792 highest latencies:
System rack7slot8.osadl.org (updated Tue Apr 21, 2026 02:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
998216590,9sleep0996-21memory19:05:250
1909991759,120cyclictest9755-21apt-get21:47:110
19099917440,117cyclictest3650irq/20-4900000022:12:120
19099916341,105cyclictest10250irq/56-4a10000019:52:350
1909991618,132cyclictest18602-21sshd00:25:170
1909991609,109cyclictest2170-21sort19:10:150
1909991607,115cyclictest1276-21runrttasks21:10:160
1909991606,19cyclictest21933-21seq22:33:520
1909991605,15cyclictest30199-21chrt21:00:430
1909991589,115cyclictest27101-21ntp_states22:50:390
1909991588,110cyclictest8423-21df_inode19:35:180
19099915810,109cyclictest801-21dbus-daemon22:00:000
19099915713,103cyclictest1408-21nginx19:47:350
1909991568,110cyclictest16670-21apt-get00:17:070
1909991566,113cyclictest12285-21wget00:00:200
1909991559,128cyclictest24325-21http20:40:050
1909991559,126cyclictest17291-21wget00:20:160
1909991557,17cyclictest25516-21users20:41:360
1909991557,111cyclictest18943-21apt-get20:17:090
19099915538,106cyclictest4512-21/usr/sbin/munin19:20:120
19099915510,123cyclictest30431-21latency_hist23:05:070
1909991547,124cyclictest26047-21/usr/sbin/munin20:45:410
1909991538,16cyclictest27590-21irqstats20:50:310
1909991537,105cyclictest754-21systemd-journal22:05:170
19099915310,104cyclictest21090-21ntp_states20:25:440
1909991529,109cyclictest24962-21munin-run22:45:040
1909991528,14cyclictest24960-21apt-get22:47:100
1909991528,123cyclictest1305-21snmpd22:58:470
1909991527,112cyclictest2538-21/usr/sbin/munin23:20:420
19099915239,102cyclictest13414-21runrttasks19:55:230
19099915227,108cyclictest5804-21wget19:25:130
1909991517,18cyclictest6476-21ntp_states21:35:390
1909991516,124cyclictest23001-21awk22:36:080
19099915110,100cyclictest31298-21ntp_states23:06:180
1909991507,126cyclictest8499-21gpgv21:45:050
19099915049,94cyclictest20538-21grep22:30:070
19099915041,89cyclictest10150irq/55-4a10000020:00:400
19099915039,101cyclictest22777-21runrttasks20:32:450
19099915022,115cyclictest1857-21apt-get21:17:050
1909991497,15cyclictest1116-21diskstats23:15:420
19099914944,83cyclictest10150irq/55-4a10000020:55:220
19099914937,102cyclictest5515-21runrttasks23:32:500
1909991488,120cyclictest4447-21wc19:20:040
1909991487,15cyclictest15176-21find00:10:440
19099914844,88cyclictest10150irq/55-4a10000021:25:510
1909991477,14cyclictest17581-21apt-get22:17:060
1909991476,18cyclictest12000-40logrotate00:00:030
19099914738,87cyclictest10250irq/56-4a10000022:00:360
19099914734,98cyclictest10250irq/56-4a10000023:38:140
19099914710,118cyclictest19689-21fw_forwarded_lo20:20:270
1909991469,121cyclictest32484-21ntp_states23:10:510
1909991467,19cyclictest31056-21wget21:05:120
1909991467,18cyclictest15907-21diskstats20:05:220
19099914643,93cyclictest7328-21netstat19:30:350
19099914638,97cyclictest17303-21ntpq20:10:360
19099914638,95cyclictest5174-21netstat21:30:340
1909991457,90cyclictest9414-21chrt23:49:100
1909991457,105cyclictest10031-21ntp_states23:50:420
19099914539,95cyclictest9842-21ntpq19:40:370
19099914539,93cyclictest18398-21memory22:20:330
1909991448,122cyclictest7358-21df_inode23:40:200
1909991428,122cyclictest22450-21munin-run00:40:020
1909991427,119cyclictest13439-21wget00:05:180
1909991417,119cyclictest20694-21users00:30:520
19099914143,86cyclictest3300-21sshd21:23:240
1909991409,117cyclictest3636-21diskstats23:25:270
19099914025,105cyclictest754-21systemd-journal21:52:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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