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2023-06-11 - 02:57

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 20 highest latencies:
System rack4slot2.osadl.org (updated Sun Jun 11, 2023 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
745012880,0irq/46-4a10000011488-1kworker/u3:218:58:480
140589912439,0cyclictest10412-21memory20:23:330
140589912235,0cyclictest27457-21cstates00:23:000
140589912235,0cyclictest23682-21chrt21:02:570
140589912231,0cyclictest3232-21/usr/sbin/munin20:03:070
140589912139,0cyclictest12239-21/usr/sbin/munin20:28:330
140589912138,0cyclictest27523-21fschecks_time22:48:100
140589912134,0cyclictest16057-21runrttasks23:48:420
140589912132,0cyclictest20097-21chrt00:01:290
140589912128,0cyclictest31101-21runrttasks21:23:340
140589912036,0cyclictest18471-21aten_r4power_vo20:47:570
140589912035,0cyclictest17052-21fschecks_time20:43:100
140589912032,0cyclictest5437-21if_eth023:18:200
140589911939,0cyclictest16961-21apt-get23:52:480
140589911932,0cyclictest26457-21users22:43:490
140589911932,0cyclictest17432-21memory22:18:300
140589911930,0cyclictest8379-21df_inode20:18:030
140589911930,0cyclictest5767-21ls21:43:440
140589911930,0cyclictest24842-21chrt22:39:270
140589911840,0cyclictest9504-21runrttasks23:29:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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