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2023-01-29 - 16:31

ARM TI AM3354 @800 MHz, Linux 5.10.47-rt46 (Profile)

Latency plot of system in rack #4, slot #2
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l50000000 -m -n -a0 -t1 -p99 -i400 -h400 -q
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 50 highest latencies:
System rack4slot2.osadl.org (updated Sun Jan 29, 2023 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
73504920,0irq/45-4a10000028079-21kworker/0:407:03:040
2596529210,0sleep025968-21diskstats08:18:160
912999159,0cyclictest0-21swapper09:58:060
912999158,0cyclictest0-21swapper09:13:270
912999058,0cyclictest0-21swapper10:48:520
912999058,0cyclictest0-21swapper07:18:300
912999055,0cyclictest0-21swapper09:32:500
310952909,0sleep031097-21diskstats08:33:170
912998857,0cyclictest0-21swapper09:23:480
912998857,0cyclictest0-21swapper09:18:400
912998856,0cyclictest0-21swapper08:53:100
912998855,0cyclictest0-21swapper07:38:110
177182889,0sleep017720-21fw_conntrack11:03:260
912998767,0cyclictest0-21swapper07:28:410
912998755,0cyclictest0-21swapper08:08:330
912998754,0cyclictest0-21swapper07:53:100
912998753,0cyclictest0-21swapper08:28:220
7450870,0irq/46-4a1000002696-21nfs4_client11:54:360
912998656,0cyclictest0-21swapper08:38:350
912998655,0cyclictest0-21swapper10:18:440
912998655,0cyclictest0-21swapper07:23:330
912998654,0cyclictest0-21swapper08:03:500
912998652,0cyclictest0-21swapper12:23:380
912998652,0cyclictest0-21swapper11:58:030
912998563,0cyclictest0-21swapper11:08:530
912998562,0cyclictest0-21swapper11:18:050
912998553,0cyclictest0-21swapper10:53:130
912998552,0cyclictest0-21swapper10:03:510
912998551,0cyclictest0-21swapper09:03:280
912998551,0cyclictest0-21swapper07:43:450
912998455,0cyclictest0-21swapper12:13:510
912998454,0cyclictest0-21swapper07:13:210
7450840,0irq/46-4a100000413-21diskstats10:13:140
7450840,0irq/46-4a100000305742sleep011:40:460
47012840,0sleep02990-1kworker/u3:408:50:140
912998362,0cyclictest0-21swapper07:08:390
912998351,0cyclictest0-21swapper11:52:510
7450830,0irq/46-4a1000006098-21wc10:28:490
7450830,0irq/46-4a100000433-21snmpd08:47:090
7450830,0irq/46-4a10000026420-21ntpq09:53:480
912998256,0cyclictest0-21swapper08:57:580
912998251,0cyclictest0-21swapper09:38:200
912998250,0cyclictest0-21swapper07:48:290
912998249,0cyclictest0-21swapper10:38:090
7450820,0irq/46-4a10000082502sleep010:35:310
7450820,0irq/46-4a1000007776-21ntp_states12:08:410
912998160,0cyclictest0-21swapper09:08:450
912998151,0cyclictest0-21swapper11:23:470
7450810,0irq/46-4a10000029089-21runrttasks11:37:420
7450810,0irq/46-4a10000023354-1kworker/u3:008:13:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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