DPDK usage discussions
 help / color / mirror / Atom feed
From: David Aldrich <david.aldrich.ntml@gmail.com>
To: users <users@dpdk.org>
Subject: [dpdk-users] Basic hugepages question
Date: Wed, 9 Dec 2020 16:34:29 +0000
Message-ID: <CAJK_iehq4qKvFeyTa5WR6Bb37NO8M-w_wdRmfi6Gwv_oMNvfsQ@mail.gmail.com> (raw)


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

Best regards

             reply	other threads:[~2020-12-09 16:34 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-09 16:34 David Aldrich [this message]
2020-12-09 16:59 ` Stephen Hemminger
2020-12-09 18:30   ` David Aldrich

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CAJK_iehq4qKvFeyTa5WR6Bb37NO8M-w_wdRmfi6Gwv_oMNvfsQ@mail.gmail.com \
    --to=david.aldrich.ntml@gmail.com \
    --cc=users@dpdk.org \


* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

DPDK usage discussions

This inbox may be cloned and mirrored by anyone:

	git clone --mirror https://inbox.dpdk.org/users/0 users/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 users users/ https://inbox.dpdk.org/users \
	public-inbox-index users

Example config snippet for mirrors.
Newsgroup available over NNTP:

AGPL code for this site: git clone https://public-inbox.org/public-inbox.git