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2026-07-30 - 02:07
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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 Thu Jul 30, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15310211700,0chrt13788-1kworker/u3:119:05:190
7450920,0irq/46-4a1000009437-21sendmail-msp21:58:430
7450920,0irq/46-4a10000028781-21tune2fs21:18:500
7450920,0irq/46-4a10000028248-21sendmail-msp21:18:170
7450920,0irq/46-4a1000002681-21/usr/sbin/munin23:13:240
7450920,0irq/46-4a10000026672-21seq22:48:280
7450920,0irq/46-4a10000013428-21/usr/sbin/munin20:33:480
7450920,0irq/46-4a10000010093-21/usr/sbin/munin20:23:520
7450910,0irq/46-4a1000009552-21/usr/sbin/munin23:33:270
7450910,0irq/46-4a1000006557-21tune2fs23:23:450
7450910,0irq/46-4a1000006450-21diskstats20:13:400
7450910,0irq/46-4a1000004300-21sendmail-msp23:19:180
7450910,0irq/46-4a10000032515-21ps21:29:080
7450910,0irq/46-4a10000025302-21tune2fs19:33:420
7450910,0irq/46-4a10000021892-21fschecks_count19:23:420
7450910,0irq/46-4a10000020880-21users20:54:160
7450910,0irq/46-4a10000020349-21/usr/sbin/munin19:18:590
7450910,0irq/46-4a10000017078-21runrttasks22:19:130
7450910,0irq/46-4a10000011174-21/usr/sbin/munin23:38:440
7450900,0irq/46-4a1000008517-21ntpq21:54:040
7450900,0irq/46-4a100000837-21cron23:08:150
7450900,0irq/46-4a1000006728-21memory21:48:580
7450900,0irq/46-4a1000005798-21sshd20:11:400
7450900,0irq/46-4a100000438-21snmpd23:44:170
7450900,0irq/46-4a10000032341-21ls19:53:550
7450900,0irq/46-4a10000030682-21memory19:49:010
7450900,0irq/46-4a10000028169-21runrttasks19:42:480
7450900,0irq/46-4a10000025227-21df_inode00:18:390
7450900,0irq/46-4a10000023207-21sshd22:38:260
7450900,0irq/46-4a10000023205-21/usr/sbin/munin00:14:120
7450900,0irq/46-4a10000021174-21chrt22:31:480
7450900,0irq/46-4a10000018985-21mailstats20:49:110
7450900,0irq/46-4a10000018395-21diskstats23:58:430
7450890,0irq/46-4a1000008001-21/usr/sbin/munin23:28:310
7450890,0irq/46-4a1000004641-21seq21:43:340
7450890,0irq/46-4a100000438-21snmpd21:08:270
7450890,0irq/46-4a10000031643-21ls23:03:180
7450890,0irq/46-4a10000030365-21seq21:23:390
7450890,0irq/46-4a10000028988-21nfs4_client00:29:030
7450890,0irq/46-4a10000026496-21munin-run22:48:170
7450890,0irq/46-4a1000002611-21sendmail-msp21:39:240
7450890,0irq/46-4a10000023105-21sendmail-msp22:38:180
7450890,0irq/46-4a10000018577-21perl19:14:040
7450890,0irq/46-4a10000017967-21sendmail-msp23:58:200
7450890,0irq/46-4a10000017103-21ntpq20:44:050
7450890,0irq/46-4a10000016180-21chrt23:53:040
7450890,0irq/46-4a1000001606-21runrttasks21:33:570
7450890,0irq/46-4a10000015828-21runrttasks20:39:380
7450880,0irq/46-4a1000008407-21chrt20:19:000
7450880,0irq/46-4a10000028641-21diskstats22:53:450
7450880,0irq/46-4a10000028181-21runrttasks00:28:060
7450880,0irq/46-4a10000023122-21runrttasks21:03:170
7450880,0irq/46-4a10000016891-21sed19:09:190
7450880,0irq/46-4a10000015265-21memory22:13:590
7450880,0irq/46-4a10000012243-21timerandwakeup20:29:150
3057728810,0sleep030585-21/usr/sbin/munin00:33:550
7450870,0irq/46-4a100000438-21snmpd22:09:090
7450870,0irq/46-4a100000438-21snmpd22:04:050
7450870,0irq/46-4a1000003442-21runrttasks20:04:050
7450870,0irq/46-4a10000028673-21df_inode19:43:370
7450870,0irq/46-4a1000002564-21ls23:13:170
7450870,0irq/46-4a10000023651-21perl21:03:450
7450870,0irq/46-4a10000023541-21df_inode19:28:360
7450870,0irq/46-4a10000021998-21if_eth000:08:530
7450870,0irq/46-4a10000019740-21grep00:03:190
7450870,0irq/46-4a10000018153-21wget22:23:280
7450860,0irq/46-4a1000001907-21sendmail_mailtr19:59:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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