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2021-10-24 - 01:35

0, Linux 4.18.5-rt3 (Profile)

Latency plot of system in rack #a, slot #3
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rackaslot3 (updated Sat Oct 23, 2021 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
92250220,0irq/29-eth0-TxR8818-21scp11:23:420
92350210,0irq/30-eth0-TxR0-21swapper/112:20:451
92550200,0irq/32-eth0-TxR0-21swapper/311:09:133
92450200,0irq/31-eth0-TxR8632-21sshd12:18:482
92350200,0irq/30-eth0-TxR0-21swapper/111:41:531
92350200,0irq/30-eth0-TxR0-21swapper/110:59:121
92350200,0irq/30-eth0-TxR0-21swapper/110:58:371
701200,0rcuc/723047-21scp10:50:337
461200,0rcuc/428641-21scp10:59:454
92550190,0irq/32-eth0-TxR0-21swapper/312:50:513
92550190,0irq/32-eth0-TxR0-21swapper/312:13:563
92550190,0irq/32-eth0-TxR0-21swapper/311:28:583
92550190,0irq/32-eth0-TxR0-21swapper/311:15:503
92550190,0irq/32-eth0-TxR0-21swapper/311:07:053
92450190,0irq/31-eth0-TxR5414-21scp11:16:312
92450190,0irq/31-eth0-TxR0-21swapper/212:44:092
92450190,0irq/31-eth0-TxR0-21swapper/212:44:092
92350190,0irq/30-eth0-TxR2645-21scp11:12:031
92350190,0irq/30-eth0-TxR21635-21sshd12:39:211
92350190,0irq/30-eth0-TxR13063-21sshd12:24:411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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