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2026-08-14 - 18:18
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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 Fri Aug 14, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74502440,0irq/46-4a10000031797-1kworker/u3:107:07:210
283229821,0sleep02861-21sort10:20:580
1237999658,0cyclictest0-21swapper11:38:180
7450950,0irq/46-4a10000032575-21sendmail-msp08:40:240
7350950,0irq/45-4a10000020113-21runrttasks11:11:170
7450940,0irq/46-4a1000009212-21tune2fs07:30:140
7450940,0irq/46-4a10000031670-21ntp_states08:35:330
7450940,0irq/46-4a1000003110-21ls07:14:500
7450940,0irq/46-4a10000021304-21/usr/sbin/munin08:05:230
7450940,0irq/46-4a1000001660-21entropy07:10:080
7450940,0irq/46-4a10000015888-21df_inode09:25:060
7450940,0irq/46-4a10000014657-21grep10:55:360
7450940,0irq/46-4a10000010299-21sendmail-msp12:20:110
7450930,0irq/46-4a100000795-21ls11:50:290
7450930,0irq/46-4a1000005843-21runrttasks07:20:240
7450930,0irq/46-4a1000004070-21sshd10:25:150
7450930,0irq/46-4a100000379-21df10:14:590
7450930,0irq/46-4a10000029864-21sed10:05:280
7450930,0irq/46-4a10000027856-21sshd10:00:150
7450930,0irq/46-4a10000022616-21df_abs11:20:050
7450930,0irq/46-4a10000021145-21cut09:40:190
7450930,0irq/46-4a10000014657-21/usr/sbin/munin09:20:530
7450920,0irq/46-4a1000008593-21sh10:39:430
7450920,0irq/46-4a1000006938-21sendmail-msp09:00:370
7450920,0irq/46-4a1000006161-21sendmail_mailqu08:55:390
7450920,0irq/46-4a10000030935-21/usr/sbin/munin10:10:490
7450920,0irq/46-4a10000026171-21diskstats08:20:110
7450920,0irq/46-4a10000026063-21df_abs11:30:010
7450920,0irq/46-4a1000002353-21sort08:45:110
7450920,0irq/46-4a1000002059-21expr11:54:590
7450920,0irq/46-4a10000018912-21sendmail-msp08:00:230
7450920,0irq/46-4a10000017865-21kernelversion07:55:240
7450920,0irq/46-4a10000013235-21who09:15:470
7450920,0irq/46-4a10000011090-21seq07:35:280
7450910,0irq/46-4a1000009453-21ntpq10:40:470
7450910,0irq/46-4a1000006448-21chrt12:06:220
7450910,0irq/46-4a1000005516-21df10:29:590
7450910,0irq/46-4a10000029847-21memory11:40:400
7450910,0irq/46-4a10000027959-21fschecks_time08:25:090
7450910,0irq/46-4a10000024093-21/usr/sbin/munin11:25:270
7450910,0irq/46-4a10000022790-21fschecks_count08:10:090
7450910,0irq/46-4a10000019599-21runrttasks09:35:260
7450910,0irq/46-4a10000017590-21chrt09:30:060
7450910,0irq/46-4a10000017127-21sendmail-msp12:39:470
7450910,0irq/46-4a10000015589-21aten_r4power_cu10:59:550
7450910,0irq/46-4a10000014500-21load07:45:220
1237999158,0cyclictest0-21swapper12:29:580
1237999157,0cyclictest0-21swapper08:50:280
7450900,0irq/46-4a1000009141-21sshd12:15:160
7450900,0irq/46-4a1000006902-1kworker/u3:107:24:510
7450900,0irq/46-4a1000004313-21/usr/sbin/munin12:00:500
7450900,0irq/46-4a10000025811-21seq09:54:510
7450900,0irq/46-4a10000024767-21missed_timers08:15:290
7450900,0irq/46-4a10000024764-21ntpq09:50:290
7450900,0irq/46-4a10000022857-21perl09:45:130
7450900,0irq/46-4a10000015801-21df07:49:570
7450900,0irq/46-4a10000013706-21latency_hist12:29:440
7450900,0irq/46-4a10000013111-21sensors_temp07:40:520
7450900,0irq/46-4a10000012436-21diskstats10:50:050
7450890,0irq/46-4a100000454-21snmpd12:10:180
7450890,0irq/46-4a10000029426-21cpuspeed08:29:570
7450890,0irq/46-4a10000017862-21meminfo11:05:210
7450890,0irq/46-4a10000011710-21chrt10:47:190
7450890,0irq/46-4a10000010639-21/usr/sbin/munin09:09:590
7450880,0irq/46-4a1000008813-21/usr/sbin/munin09:04:530
7450880,0irq/46-4a10000031995-21users11:45:490
7450880,0irq/46-4a10000020823-21cpu11:14:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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