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2026-03-21 - 12:18
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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 all highest latencies:
System rack4slot2.osadl.org (updated Sat Mar 21, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31180212000,0chrt31117-1kworker/u3:219:06:130
7450970,0irq/46-4a1000004499-21cron00:06:290
7450970,0irq/46-4a10000012084-21memory21:17:130
7350970,0irq/45-4a1000009895-21runrttasks00:21:410
50902970,0sleep02911-1kworker/u3:200:07:010
251022970,0sleep024712-1kworker/u3:223:31:330
286172960,0sleep025444-1kworker/u3:220:31:410
7450950,0irq/46-4a1000008985-21/usr/sbin/munin19:32:250
7450950,0irq/46-4a10000031720-1kworker/u3:020:54:410
7450950,0irq/46-4a1000002066-21sendmail_mailtr20:47:230
7350950,0irq/45-4a10000016608-21/usr/sbin/munin23:06:370
7450940,0irq/46-4a1000009849-21aten_r4power_po19:36:410
7450940,0irq/46-4a1000008637-21chrt21:07:080
7450940,0irq/46-4a10000030714-21fw_packets23:47:020
7450940,0irq/46-4a1000002964-21aten_r4power_en19:16:390
7450940,0irq/46-4a10000029236-21ntp_offset22:07:180
7450940,0irq/46-4a10000025038-21latency_hist21:56:320
7450940,0irq/46-4a10000024124-21runrttasks23:27:170
7450940,0irq/46-4a10000024035-21runrttasks20:17:090
7450940,0irq/46-4a10000020645-21ntp_kernel_err20:07:140
7450940,0irq/46-4a10000018758-21fw_forwarded_lo20:02:040
7450940,0irq/46-4a10000018743-21fw_forwarded_lo23:12:010
7450940,0irq/46-4a10000016789-21cstates21:31:450
7450940,0irq/46-4a10000016528-21wc19:56:330
7450940,0irq/46-4a1000001541-21diskstats22:21:530
7450940,0irq/46-4a10000015053-21chrt21:26:420
7450940,0irq/46-4a10000011857-21fschecks_time19:41:560
7450940,0irq/46-4a10000011333-21sh22:51:290
284382940,0sleep025444-1kworker/u3:220:31:310
7450930,0irq/46-4a1000009632-21cron00:21:280
7450930,0irq/46-4a1000004596-21grep20:56:340
7450930,0irq/46-4a10000030287-21aten_r4power_en22:11:390
7450930,0irq/46-4a10000027654-21/usr/sbin/munin22:02:210
7450930,0irq/46-4a10000025839-21ntpq20:22:180
7450930,0irq/46-4a10000020185-21cstates21:41:420
7450930,0irq/46-4a10000016451-1kworker/u3:020:01:260
7450930,0irq/46-4a10000013789-21memory00:32:100
7450930,0irq/46-4a10000011547-21aten_r4power_vo22:51:420
7450920,0irq/46-4a1000007925-21munin-run19:31:300
7450920,0irq/46-4a1000006945-21meminfo00:12:100
7450920,0irq/46-4a1000006804-21idleruntime21:02:020
7450920,0irq/46-4a1000004639-21/usr/sbin/munin19:22:090
7450920,0irq/46-4a1000004463-21runrttasks22:31:180
7450920,0irq/46-4a10000032649-21ntpq22:17:140
7450920,0irq/46-4a10000032572-21meminfo20:42:080
7450920,0irq/46-4a10000031782-21runrttasks20:41:050
7450920,0irq/46-4a10000031117-1kworker/u3:219:11:150
7450920,0irq/46-4a1000002825-21lockfile-remove19:16:310
7450920,0irq/46-4a10000025841-21sh21:57:180
7450920,0irq/46-4a10000023106-21runrttasks23:25:010
7450920,0irq/46-4a10000022128-21perl21:47:000
7450920,0irq/46-4a10000018909-21meminfo21:37:100
7450920,0irq/46-4a10000013986-21/usr/sbin/munin21:22:200
7450910,0irq/46-4a1000009702-21grep21:11:330
7450910,0irq/46-4a1000009065-21unixbench_singl22:42:270
7450910,0irq/46-4a1000005369-21chrt22:32:200
7450910,0irq/46-4a10000032419-21fw_forwarded_lo23:52:010
7450910,0irq/46-4a10000026501-1kworker/u3:023:39:050
7450910,0irq/46-4a10000019714-1kworker/u3:223:20:590
7450910,0irq/46-4a10000015391-21interrupts23:02:020
7450910,0irq/46-4a10000013783-21meminfo22:57:100
7450910,0irq/46-4a10000013460-21df_inode19:46:490
7450910,0irq/46-4a10000012569-1kworker/u3:000:30:420
7350910,0irq/45-4a1000006353-21aten_r4power_cu22:36:380
7450900,0irq/46-4a10000029462-21/usr/sbin/munin23:42:240
7450900,0irq/46-4a10000022166-21runrttasks20:12:030
7450890,0irq/46-4a1000001334-21aten_r4power_vo23:56:410
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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