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2026-08-31 - 20:52
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Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 50 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 rack4slot2.osadl.org (updated Mon Aug 31, 2026 12:44:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74505330,0irq/46-4a10000027484-1kworker/u3:107:04:240
30496999373,0cyclictest0-21swapper10:14:190
239222910,0sleep022228-1kworker/u3:008:21:440
7350900,0irq/45-4a1000007856-21ntpdc10:44:590
30496999058,0cyclictest0-21swapper10:54:300
30496999058,0cyclictest0-21swapper10:09:550
7350890,0irq/45-4a1000008879-21sendmail-msp07:44:430
7350890,0irq/45-4a10000011214-21/usr/sbin/munin12:29:500
38622898,0sleep03919-21egrep10:34:170
30496998957,0cyclictest0-21swapper08:29:550
30496998956,0cyclictest0-21swapper12:10:060
30496998956,0cyclictest0-21swapper09:09:570
30496998956,0cyclictest0-21swapper08:34:400
7350880,0irq/45-4a100000905-1kworker/u3:108:04:360
7350880,0irq/45-4a1000005701-21df_inode12:14:230
30496998858,0cyclictest0-21swapper08:14:450
30496998857,0cyclictest0-21swapper07:49:330
30496998856,0cyclictest0-21swapper08:49:360
30496998855,0cyclictest0-21swapper07:54:380
7350870,0irq/45-4a10000025442-1kworker/u3:210:02:100
7350870,0irq/45-4a10000019387-21awk08:09:170
7450860,0irq/46-4a10000030445-21awk08:40:180
7450860,0irq/46-4a10000010488-1kworker/u3:209:19:450
7350860,0irq/45-4a1000005828-21df_inode09:04:260
7350860,0irq/45-4a10000031163-21runrttasks10:19:170
7350860,0irq/45-4a10000025829-21sendmail-msp11:44:480
7350860,0irq/45-4a10000012968-21nfs_client11:00:050
30496998662,0cyclictest0-21swapper08:44:420
30496998655,0cyclictest0-21swapper07:09:130
178012860,0sleep016614-1kworker/u3:109:39:370
7450850,0irq/46-4a10000032146-1kworker/u3:211:59:500
7450850,0irq/46-4a10000023179-21memory09:54:470
7450850,0irq/46-4a10000019803-21/usr/sbin/munin11:20:050
7350850,0irq/45-4a1000007347-21/usr/sbin/munin12:19:250
7350850,0irq/45-4a1000002464-21fw_conntrack12:04:400
7350850,0irq/45-4a10000020882-21sshd11:24:160
7350850,0irq/45-4a10000015703-21sendmail-msp08:02:220
58752858,0sleep05876-21diskstats07:29:270
43362858,0sleep04338-21fw_forwarded_lo07:24:410
30496998555,0cyclictest0-21swapper09:50:010
7450840,0irq/46-4a100000454-21snmpd11:52:220
7450840,0irq/46-4a10000031005-21sendmail-msp10:25:040
7450840,0irq/46-4a10000017360-21sendmail-msp09:39:080
7450840,0irq/46-4a10000016614-1kworker/u3:109:44:330
7450840,0irq/46-4a10000012282-21aten_r4power_en12:34:130
7450840,0irq/46-4a10000010460-21wc12:29:050
324992840,0chrt31275-1kworker/u3:207:14:160
249642848,0sleep024965-21memory08:24:550
7450830,0irq/46-4a1000009623-21meminfo07:40:020
7450830,0irq/46-4a1000005361-21sendmail-msp10:39:330
7450830,0irq/46-4a100000454-21snmpd07:35:370
7450830,0irq/46-4a1000003713-21sendmail-msp08:59:200
7450830,0irq/46-4a1000003662-21cron08:59:020
7450830,0irq/46-4a1000002058-21sendmail-msp07:19:270
7450830,0irq/46-4a10000016213-21irqstats11:09:360
7350830,0irq/45-4a10000025829-21sendmail-msp11:42:320
7350830,0irq/45-4a10000024242-21aten_r4power_cu11:34:130
30496998362,0cyclictest0-21swapper11:54:150
30496998354,0cyclictest0-21swapper11:29:550
30496998353,0cyclictest0-21swapper11:14:400
7450820,0irq/46-4a10000024175-21sendmail-msp10:04:480
7450820,0irq/46-4a1000002177-21wc10:29:180
7450820,0irq/46-4a10000013564-21runrttasks09:26:100
7350820,0irq/45-4a1000008609-1kworker/u3:010:49:290
7350820,0irq/45-4a10000014365-21fschecks_count11:04:330
7450810,0irq/46-4a1000009524-21meminfo09:14:430
7450810,0irq/46-4a10000014038-21/usr/sbin/munin09:29:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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