Date: Wed, 01 Nov 2000 21:19:28 -0500 (EST) From: Bosko Milekic <bmilekic@dsuper.net> To: Yifeng Xu <websoft@yahoo.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: mbuf and MINCLSIZE Message-ID: <Pine.BSF.4.21.0011012113460.43294-100000@jehovah.technokratis.com> In-Reply-To: <20001102015008.20834.qmail@web1705.mail.yahoo.com>
next in thread | previous in thread | raw e-mail | index | archive | help
MINCLSIZE is set to MHLEN+1 by default.
If you're running -CURRENT, checkout the mbuf(9) man page ('man 9 mbuf')
which pretty much explains it.
You shouldn't be increasing MINCLSIZE.
You shouldn't really be lowering MINCLSIZE unless you want to promote the
allocation of clusters. Strictly speaking, you're not likely to observe
any noticable difference in performance in the general case.
MINCLSIZE is defined in /sys/sys/mbuf.h and changing it would require a
kernel rebuild but if you didn't know that, you probably shouldn't be
changing it. :-)
On Wed, 1 Nov 2000, Yifeng Xu wrote:
> Hi,
>
> I have read Richard Stevens's "TCP/IP Illustrated
> Volumn 3", and he suggested us to set macro MINCLSIZE
> to 101 for most BSD server serving HTTP service.
>
> can it be changed in FreeBSD and get same benifit as
> he said?
>
> Regards,
> XuYifeng
Later,
Bosko Milekic
bmilekic@technokratis.com
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.4.21.0011012113460.43294-100000>