From: Herbert Xu <herbert@gondor.apana.org.au>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: starlight@binnacle.cx, linux-kernel@vger.kernel.org,
mel@csn.ul.ie, linux-mm@kvack.org, hugh.dickins@tiscali.co.uk,
Lee.Schermerhorn@hp.com, kosaki.motohiro@jp.fujitsu.com,
ebmunson@us.ibm.com, agl@us.ibm.com, apw@canonical.com,
wli@movementarian.org, netdev@vger.kernel.org
Subject: Re: QUESTION: can netdev_alloc_skb() errors be reduced by tuning?
Date: Sun, 5 Jul 2009 11:44:48 +0800 [thread overview]
Message-ID: <20090705034448.GA7588@gondor.apana.org.au> (raw)
In-Reply-To: <4A3737CE.3020305@gmail.com>
Eric Dumazet <eric.dumazet@gmail.com> wrote:
>
> Because of slab rounding, this reallocation should be done only if resulting data
> portion is really smaller (50 %) than original skb.
If we're going to do this in the core then we should only do it
in the spots where the packet may be held indefinitely.
Cheers,
--
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2009-07-05 3:19 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-27 11:12 [PATCH 0/2] Fixes for hugetlbfs-related problems on shared memory Mel Gorman
2009-05-27 11:12 ` [PATCH 1/2] x86: Ignore VM_LOCKED when determining if hugetlb-backed page tables can be shared or not Mel Gorman
2009-05-27 16:38 ` Eric B Munson
2009-05-27 23:18 ` Ingo Molnar
2009-05-28 8:55 ` Mel Gorman
2009-05-27 11:12 ` [PATCH 2/2] mm: Account for MAP_SHARED mappings using VM_MAYSHARE and not VM_SHARED in hugetlbfs Mel Gorman
2009-05-27 16:40 ` Eric B Munson
2009-05-27 20:14 ` [PATCH 0/2] Fixes for hugetlbfs-related problems on shared memory Andrew Morton
2009-05-27 23:19 ` Ingo Molnar
2009-06-16 0:19 ` QUESTION: can netdev_alloc_skb() errors be reduced by tuning? starlight
2009-06-16 2:26 ` Eric Dumazet
2009-06-16 4:12 ` starlight
2009-06-16 6:12 ` Eric Dumazet
2009-07-05 3:44 ` Herbert Xu [this message]
2009-06-16 9:19 ` Mel Gorman
2009-06-16 15:25 ` starlight
2009-05-28 8:56 ` [PATCH 0/2] Fixes for hugetlbfs-related problems on shared memory Mel Gorman
2009-06-08 1:25 ` starlight
2009-06-08 10:24 ` Mel Gorman
2009-06-16 17:24 QUESTION: can netdev_alloc_skb() errors be reduced by tuning? starlight
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:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20090705034448.GA7588@gondor.apana.org.au \
--to=herbert@gondor.apana.org.au \
--cc=Lee.Schermerhorn@hp.com \
--cc=agl@us.ibm.com \
--cc=apw@canonical.com \
--cc=ebmunson@us.ibm.com \
--cc=eric.dumazet@gmail.com \
--cc=hugh.dickins@tiscali.co.uk \
--cc=kosaki.motohiro@jp.fujitsu.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mel@csn.ul.ie \
--cc=netdev@vger.kernel.org \
--cc=starlight@binnacle.cx \
--cc=wli@movementarian.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox