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2026-01-03 - 00:59
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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 all highest latencies:
System rack4slot2.osadl.org (updated Fri Jan 02, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74501970,0irq/46-4a10000028930-21runrttasks07:08:050
291479910058,0cyclictest0-21swapper11:14:390
7350960,0irq/45-4a1000006729-21memory12:20:360
7450950,0irq/46-4a1000006694-21runrttasks09:11:000
7350950,0irq/45-4a10000010466-21/usr/sbin/munin09:20:540
135042959,0sleep013511-21ntp_states07:55:220
7450940,0irq/46-4a100000460-21snmpd11:05:400
7450940,0irq/46-4a100000460-21snmpd11:00:320
7450940,0irq/46-4a10000031616-21seq07:15:050
7450940,0irq/46-4a10000023752-21memory11:35:210
7450940,0irq/46-4a10000017901-21sendmail-msp11:21:440
7450940,0irq/46-4a10000016148-21sendmail-msp09:39:400
7350940,0irq/45-4a1000001586-21/usr/sbin/munin07:20:420
29147999469,0cyclictest0-21swapper11:25:170
7450930,0irq/46-4a1000005128-21missed_timers12:16:160
7450930,0irq/46-4a10000031529-21awk10:24:290
7450930,0irq/46-4a10000030358-21users07:10:430
7450930,0irq/46-4a1000002732-21wget10:34:470
7450930,0irq/46-4a10000022988-21sendmail-msp10:00:220
7450930,0irq/46-4a10000021236-21sendmail-msp08:21:360
7450930,0irq/46-4a10000010223-21seq07:45:320
7450930,0irq/46-4a10000010081-21/usr/sbin/munin10:55:560
7450920,0irq/46-4a1000007997-21cstates12:24:510
7450920,0irq/46-4a1000002465-21sendmail-msp09:00:250
7450920,0irq/46-4a10000018441-21runrttasks09:45:070
7350920,0irq/45-4a10000010867-1kworker/u3:012:33:070
7450910,0irq/46-4a1000007710-21grep10:49:320
7450910,0irq/46-4a1000007562-21sendmail-msp07:39:310
7450910,0irq/46-4a1000006875-21grep10:45:330
7450910,0irq/46-4a100000472-21chrt08:52:330
7450910,0irq/46-4a1000004303-21grep12:14:360
7450910,0irq/46-4a10000031579-21sendmail-msp11:59:370
7450910,0irq/46-4a10000029542-21chrt11:52:080
7450910,0irq/46-4a10000029317-21chrt10:15:420
7450910,0irq/46-4a10000026430-21munin-run11:44:290
7450910,0irq/46-4a10000022376-21processes11:31:350
7450910,0irq/46-4a10000021510-21/usr/sbin/munin09:54:460
7450910,0irq/46-4a10000020994-21sshd08:17:510
7450910,0irq/46-4a1000001814-21/usr/sbin/munin10:30:350
7450910,0irq/46-4a10000017045-21sendmail_mailqu08:05:300
7450910,0irq/46-4a10000016148-21sendmail-msp09:39:330
7450910,0irq/46-4a10000015656-21uptime11:10:390
7450910,0irq/46-4a10000012226-21runrttasks07:50:550
7450910,0irq/46-4a10000011865-21tr12:35:190
7450910,0irq/46-4a10000011743-21meminfo09:25:170
7450910,0irq/46-4a1000001160-21df12:04:490
29147999170,0cyclictest0-21swapper10:09:540
29147999159,0cyclictest0-21swapper10:25:280
29147999159,0cyclictest0-21swapper09:05:120
7450900,0irq/46-4a100000985-21aten_r4power_vo08:54:490
7450900,0irq/46-4a1000007562-21sendmail-msp07:39:380
7450900,0irq/46-4a10000030649-21ntp_kernel_pll_11:55:210
7450900,0irq/46-4a1000002538-21/usr/sbin/munin07:25:250
7450900,0irq/46-4a10000025022-21df10:04:530
7450900,0irq/46-4a10000023378-21diskstats08:25:000
7450900,0irq/46-4a10000019993-21diskstats09:49:560
7450900,0irq/46-4a10000018940-21grep08:10:320
7450900,0irq/46-4a10000014406-21sendmail-msp07:59:420
7450890,0irq/46-4a1000008214-21/usr/sbin/munin09:15:120
7450890,0irq/46-4a10000028819-21runrttasks08:40:270
7450890,0irq/46-4a10000028148-21latency_hist11:49:300
7450890,0irq/46-4a10000026748-21grep08:34:510
7450890,0irq/46-4a10000024745-21/usr/sbin/munin08:30:320
7350890,0irq/45-4a1000004685-21forks10:40:090
143822899,0sleep014384-21cron09:34:280
7450880,0irq/46-4a1000004861-21meminfo07:30:170
29147998856,0cyclictest0-21swapper08:44:490
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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