From: David Miller <davem@davemloft.net>
To: william.allen.simpson@gmail.com
Cc: huananhu@huawei.com, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, zihan@huawei.com, greg@kroah.com,
haegar@sdinet.de
Subject: Re: PATCH 23/10]Optimize the upload speed for PPP connection.
Date: Sat, 24 Oct 2009 06:46:03 -0700 (PDT) [thread overview]
Message-ID: <20091024.064603.249036129.davem@davemloft.net> (raw)
In-Reply-To: <4AE19780.3020507@gmail.com>
From: William Allen Simpson <william.allen.simpson@gmail.com>
Date: Fri, 23 Oct 2009 07:46:08 -0400
> Concur. I'd go further than that, my code usually made room for at
> least
> a full MTU (MRU) with HDLC escaping. To minimize context switches,
> that
> should be 3014 ((1500 MRU + 2 FCS + 4 header) * 2 escapes + 2 flags).
>
> Even in the old days, when memory was tight, context switches and
> interrupt
> time were more expensive, too. PPP is supposed to scale to OC-192.
Actually I'd like to see ->obuf allocated externally and then
make it simply PAGE_SIZE.
next prev parent reply other threads:[~2009-10-24 13:46 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-23 1:48 PATCH 23/10]Optimize the upload speed for PPP connection fangxiaozhi 00110321
2009-10-23 11:46 ` William Allen Simpson
2009-10-24 13:46 ` David Miller [this message]
2009-10-26 2:44 ` Franko Fang
-- strict thread matches above, loose matches on Subject: below --
2009-10-28 7:30 fangxiaozhi 00110321
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