From: Changli Gao <xiaosuo@gmail.com>
To: Tom Herbert <therbert@google.com>
Cc: netdev@vger.kernel.org, davem@davemloft.net, sridharr@google.com
Subject: Re: [PATCH] xmit_compl_seq: information to reclaim vmsplice buffers
Date: Tue, 21 Sep 2010 08:14:01 +0800 [thread overview]
Message-ID: <AANLkTint-pWd2vBsHHcc_i77V20GOrHwLo32b_=GX2EO@mail.gmail.com> (raw)
In-Reply-To: <AANLkTi=53F3O511Uq83dP75brGkJMgN_-OR9W0VJS1p-@mail.gmail.com>
On Tue, Sep 21, 2010 at 1:50 AM, Tom Herbert <therbert@google.com> wrote:
>
>>
>> > On the server side it works well if there are a sufficient
>> > number of requests coming on the connection (resorting to the
>> > timeout if necessary as described above).
>>
>> If no response is sent out by the client, the timeout mechanism may
>> slow down the data transfer.
>>
> Why would that slow down a transfer?
vmsplice(sock, page).
epoll(sock.read_event, timeo);
/* time out */
if_the_page_is_available.
reclaim_page_and_send_the_next_data.
The page maybe available before timeout, and you may not send the next
data in time.
--
Regards,
Changli Gao(xiaosuo@gmail.com)
prev parent reply other threads:[~2010-09-21 0:22 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-19 21:55 [PATCH] xmit_compl_seq: information to reclaim vmsplice buffers Tom Herbert
2010-09-20 0:35 ` David Miller
2010-09-20 3:22 ` Changli Gao
2010-09-20 17:50 ` Tom Herbert
2010-09-21 0:14 ` Changli Gao [this message]
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