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2026-04-19 - 17:49
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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 Sun Apr 19, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74502430,0irq/46-4a1000007393-1kworker/u3:007:02:380
7350920,0irq/45-4a10000014871-1kworker/u3:107:26:170
16912999169,0cyclictest0-21swapper07:46:110
7350900,0irq/45-4a1000007785-1kworker/u3:111:27:280
16912999060,0cyclictest0-21swapper08:05:590
16912999058,0cyclictest0-21swapper10:46:020
16912999057,0cyclictest0-21swapper08:56:190
16912999056,0cyclictest0-21swapper11:00:490
75072890,0sleep06004-1kworker/u3:109:46:430
16912998958,0cyclictest0-21swapper08:01:150
16912998956,0cyclictest0-21swapper09:51:120
16912998956,0cyclictest0-21swapper08:36:180
16912998858,0cyclictest0-21swapper10:55:560
16912998856,0cyclictest0-21swapper08:25:410
16912998855,0cyclictest0-21swapper12:10:340
16912998853,0cyclictest0-21swapper07:41:210
7450870,0irq/46-4a10000029012-21grep12:25:490
16912998764,0cyclictest0-21swapper10:36:130
16912998757,0cyclictest0-21swapper12:30:440
16912998755,0cyclictest0-21swapper10:10:570
16912998754,0cyclictest0-21swapper10:01:240
16912998754,0cyclictest0-21swapper08:50:440
16912998753,0cyclictest0-21swapper11:35:530
16912998653,0cyclictest0-21swapper07:16:120
7450850,0irq/46-4a100000460-21snmpd12:10:180
7450850,0irq/46-4a10000028944-21runrttasks10:50:450
7450850,0irq/46-4a1000002862-21sendmail-msp09:35:220
7450850,0irq/46-4a10000026975-21aten_r4power_po07:35:330
7450850,0irq/46-4a10000023663-21cstates09:00:360
7350850,0irq/45-4a10000025290-21wget12:15:330
16912998564,0cyclictest0-21swapper11:21:130
16912998555,0cyclictest0-21swapper12:00:450
16912998554,0cyclictest0-21swapper09:41:080
104122850,0chrt10275-1kworker/u3:008:21:010
7450840,0irq/46-4a1000003613-21nfs4_client11:11:080
7450840,0irq/46-4a10000031520-1kworker/u3:209:25:120
7450840,0irq/46-4a10000025389-21df09:05:380
7450840,0irq/46-4a10000018327-21latency_hist11:55:260
7450840,0irq/46-4a10000012932-1kworker/u3:110:06:040
7350840,0irq/45-4a10000028923-21runrttasks09:15:430
7350840,0irq/45-4a10000013695-21idleruntime11:40:550
7350840,0irq/45-4a10000012-21ksoftirqd/011:06:170
272242846,0sleep027225-21/usr/sbin/munin12:20:460
16912998454,0cyclictest0-21swapper07:56:130
7450830,0irq/46-4a1000006673-21df_inode08:10:410
7450830,0irq/46-4a1000005004-21diskstats11:15:470
7450830,0irq/46-4a100000460-21snmpd11:55:120
7450830,0irq/46-4a10000032293-21sed09:25:420
7450830,0irq/46-4a10000025401-21seq10:40:380
7450830,0irq/46-4a10000025183-21/usr/sbin/munin07:31:070
7450830,0irq/46-4a10000017686-1kworker/u3:008:45:470
7450830,0irq/46-4a10000017331-21ntpq10:16:090
7450830,0irq/46-4a10000017318-21ntpq08:41:110
7450830,0irq/46-4a10000010497-21runrttasks11:31:100
7350830,0irq/45-4a10000018713-21tune2fs10:20:480
7350830,0irq/45-4a10000014710-1kworker/u3:111:48:130
7450820,0irq/46-4a1000008085-21cat08:15:270
7450820,0irq/46-4a10000032580-21chrt07:50:590
7450820,0irq/46-4a10000027503-21ls09:11:050
7450820,0irq/46-4a10000022630-21sendmail_mailtr07:21:160
7450820,0irq/46-4a10000022526-21/usr/sbin/munin10:31:140
7450820,0irq/46-4a10000014765-21cron08:35:200
7450820,0irq/46-4a10000010955-21chrt09:56:540
7450810,0irq/46-4a1000003283-21df_inode09:35:430
7450810,0irq/46-4a10000020497-21tune2fs10:25:510
7450810,0irq/46-4a10000017084-21aten_r4power_po07:05:330
7350800,0irq/45-4a10000019097-21grep07:10:400
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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