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* [dpdk-users] Basic hugepages question
@ 2020-12-09 16:34 David Aldrich
  2020-12-09 16:59 ` Stephen Hemminger
  0 siblings, 1 reply; 3+ messages in thread
From: David Aldrich @ 2020-12-09 16:34 UTC (permalink / raw)
  To: users

Hi

Having successfully demonstrated using dpdk with our application, it's been
pointed out to me that our settings are using a very large amount of memory.

I am initialising the EAL with:

-m 16000

i.e. 16GB!

However, I am only specifying a count of 0x4000 to rte_ring_create(), which
I call twice to create one Rx and one Tx ring. So I guess these are only
using 32MB RAM total.

My questions are:

1) What would be a sensible amount of memory to specify with the '-m'
parameter to the EAL?
2) What size / number of hugepages should I allocate in Linux?

(I currently use boot parameters: 'hugepagesz=1G hugepages=20 hugepagesz=2M
hugepages=0').

Best regards
David

^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2020-12-09 18:30 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-12-09 16:34 [dpdk-users] Basic hugepages question David Aldrich
2020-12-09 16:59 ` Stephen Hemminger
2020-12-09 18:30   ` David Aldrich

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